./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.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_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/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_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/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_bc6819ad-f05a-43fc-9384-5e07b7600b33/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 2d0073111a5c7b021bc76098b9f15e3306b34538df9d4af329dd19631f32f125 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:32:43,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:32:43,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:32:43,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:32:43,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:32:43,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:32:43,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:32:43,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:32:43,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:32:43,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:32:43,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:32:43,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:32:43,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:32:43,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:32:43,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:32:43,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:32:43,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:32:43,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:32:43,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:32:43,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:32:43,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:32:43,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:32:43,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:32:43,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:32:43,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:32:43,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:32:43,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:32:43,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:32:43,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:32:43,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:32:43,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:32:43,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:32:43,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:32:43,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:32:43,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:32:43,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:32:43,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:32:43,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:32:43,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:32:43,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:32:43,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:32:43,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:32:43,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:32:43,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:32:43,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:32:43,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:32:43,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:32:43,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:32:43,539 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:32:43,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:32:43,539 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:32:43,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:32:43,540 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:32:43,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:32:43,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:32:43,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:32:43,541 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:32:43,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:32:43,541 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:32:43,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:32:43,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:32:43,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:32:43,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:32:43,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:32:43,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:32:43,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:32:43,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:32:43,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:32:43,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:32:43,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:32:43,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:32:43,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:43,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:32:43,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:32:43,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:32:43,546 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:32:43,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:32:43,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:32:43,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:32:43,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:32:43,547 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0073111a5c7b021bc76098b9f15e3306b34538df9d4af329dd19631f32f125 [2021-11-23 03:32:43,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:32:43,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:32:43,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:32:43,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:32:43,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:32:43,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-23 03:32:43,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/data/c75fd78dd/aed616bf2d3c4642860421a7143625ae/FLAG9a2240fbf [2021-11-23 03:32:45,088 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:32:45,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-23 03:32:45,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/data/c75fd78dd/aed616bf2d3c4642860421a7143625ae/FLAG9a2240fbf [2021-11-23 03:32:45,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/data/c75fd78dd/aed616bf2d3c4642860421a7143625ae [2021-11-23 03:32:45,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:32:45,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:32:45,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:45,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:32:45,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:32:45,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:45" (1/1) ... [2021-11-23 03:32:45,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfc622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:45, skipping insertion in model container [2021-11-23 03:32:45,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:45" (1/1) ... [2021-11-23 03:32:45,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:32:45,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:32:55,472 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659699,659712] [2021-11-23 03:32:55,474 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659844,659857] [2021-11-23 03:32:55,475 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659990,660003] [2021-11-23 03:32:55,475 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660155,660168] [2021-11-23 03:32:55,476 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660313,660326] [2021-11-23 03:32:55,477 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660471,660484] [2021-11-23 03:32:55,477 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660629,660642] [2021-11-23 03:32:55,478 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660789,660802] [2021-11-23 03:32:55,478 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660948,660961] [2021-11-23 03:32:55,479 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661087,661100] [2021-11-23 03:32:55,479 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661229,661242] [2021-11-23 03:32:55,480 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661378,661391] [2021-11-23 03:32:55,480 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661517,661530] [2021-11-23 03:32:55,481 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661672,661685] [2021-11-23 03:32:55,482 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661832,661845] [2021-11-23 03:32:55,482 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661983,661996] [2021-11-23 03:32:55,483 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662134,662147] [2021-11-23 03:32:55,483 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662286,662299] [2021-11-23 03:32:55,484 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662435,662448] [2021-11-23 03:32:55,485 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662583,662596] [2021-11-23 03:32:55,485 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662740,662753] [2021-11-23 03:32:55,486 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662889,662902] [2021-11-23 03:32:55,486 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663045,663058] [2021-11-23 03:32:55,487 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663198,663211] [2021-11-23 03:32:55,488 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663344,663357] [2021-11-23 03:32:55,488 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663487,663500] [2021-11-23 03:32:55,489 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663639,663652] [2021-11-23 03:32:55,489 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663785,663798] [2021-11-23 03:32:55,490 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663930,663943] [2021-11-23 03:32:55,490 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664084,664097] [2021-11-23 03:32:55,491 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664235,664248] [2021-11-23 03:32:55,492 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664390,664403] [2021-11-23 03:32:55,492 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664542,664555] [2021-11-23 03:32:55,493 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664697,664710] [2021-11-23 03:32:55,493 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664861,664874] [2021-11-23 03:32:55,494 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665017,665030] [2021-11-23 03:32:55,495 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665181,665194] [2021-11-23 03:32:55,495 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665323,665336] [2021-11-23 03:32:55,496 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665481,665494] [2021-11-23 03:32:55,496 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665648,665661] [2021-11-23 03:32:55,497 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665807,665820] [2021-11-23 03:32:55,497 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665966,665979] [2021-11-23 03:32:55,498 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666115,666128] [2021-11-23 03:32:55,498 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666262,666275] [2021-11-23 03:32:55,499 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666401,666414] [2021-11-23 03:32:55,499 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666564,666577] [2021-11-23 03:32:55,500 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666730,666743] [2021-11-23 03:32:55,500 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666894,666907] [2021-11-23 03:32:55,501 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667059,667072] [2021-11-23 03:32:55,502 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667224,667237] [2021-11-23 03:32:55,502 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667390,667403] [2021-11-23 03:32:55,503 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667555,667568] [2021-11-23 03:32:55,503 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667722,667735] [2021-11-23 03:32:55,504 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667882,667895] [2021-11-23 03:32:55,504 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668044,668057] [2021-11-23 03:32:55,505 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668203,668216] [2021-11-23 03:32:55,505 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668349,668362] [2021-11-23 03:32:55,506 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668492,668505] [2021-11-23 03:32:55,506 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668636,668649] [2021-11-23 03:32:55,507 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668779,668792] [2021-11-23 03:32:55,508 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668923,668936] [2021-11-23 03:32:55,508 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669064,669077] [2021-11-23 03:32:55,509 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669202,669215] [2021-11-23 03:32:55,509 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669360,669373] [2021-11-23 03:32:55,510 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669519,669532] [2021-11-23 03:32:55,510 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669675,669688] [2021-11-23 03:32:55,511 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669824,669837] [2021-11-23 03:32:55,511 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669976,669989] [2021-11-23 03:32:55,512 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670127,670140] [2021-11-23 03:32:55,512 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670276,670289] [2021-11-23 03:32:55,513 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670428,670441] [2021-11-23 03:32:55,513 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670576,670589] [2021-11-23 03:32:55,514 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670729,670742] [2021-11-23 03:32:55,515 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670880,670893] [2021-11-23 03:32:55,515 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671030,671043] [2021-11-23 03:32:55,516 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671177,671190] [2021-11-23 03:32:55,516 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671328,671341] [2021-11-23 03:32:55,517 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671479,671492] [2021-11-23 03:32:55,518 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671627,671640] [2021-11-23 03:32:55,518 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671793,671806] [2021-11-23 03:32:55,519 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671962,671975] [2021-11-23 03:32:55,519 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672129,672142] [2021-11-23 03:32:55,520 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672297,672310] [2021-11-23 03:32:55,520 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672447,672460] [2021-11-23 03:32:55,521 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672594,672607] [2021-11-23 03:32:55,522 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672755,672768] [2021-11-23 03:32:55,522 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672925,672938] [2021-11-23 03:32:55,523 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[673087,673100] [2021-11-23 03:32:55,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:55,598 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:32:56,556 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659699,659712] [2021-11-23 03:32:56,562 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659844,659857] [2021-11-23 03:32:56,564 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659990,660003] [2021-11-23 03:32:56,565 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660155,660168] [2021-11-23 03:32:56,566 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660313,660326] [2021-11-23 03:32:56,567 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660471,660484] [2021-11-23 03:32:56,567 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660629,660642] [2021-11-23 03:32:56,569 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660789,660802] [2021-11-23 03:32:56,570 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660948,660961] [2021-11-23 03:32:56,571 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661087,661100] [2021-11-23 03:32:56,573 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661229,661242] [2021-11-23 03:32:56,574 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661378,661391] [2021-11-23 03:32:56,574 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661517,661530] [2021-11-23 03:32:56,574 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661672,661685] [2021-11-23 03:32:56,575 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661832,661845] [2021-11-23 03:32:56,575 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661983,661996] [2021-11-23 03:32:56,576 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662134,662147] [2021-11-23 03:32:56,576 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662286,662299] [2021-11-23 03:32:56,577 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662435,662448] [2021-11-23 03:32:56,577 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662583,662596] [2021-11-23 03:32:56,578 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662740,662753] [2021-11-23 03:32:56,578 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662889,662902] [2021-11-23 03:32:56,579 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663045,663058] [2021-11-23 03:32:56,580 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663198,663211] [2021-11-23 03:32:56,581 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663344,663357] [2021-11-23 03:32:56,581 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663487,663500] [2021-11-23 03:32:56,582 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663639,663652] [2021-11-23 03:32:56,583 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663785,663798] [2021-11-23 03:32:56,583 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663930,663943] [2021-11-23 03:32:56,584 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664084,664097] [2021-11-23 03:32:56,584 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664235,664248] [2021-11-23 03:32:56,585 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664390,664403] [2021-11-23 03:32:56,586 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664542,664555] [2021-11-23 03:32:56,587 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664697,664710] [2021-11-23 03:32:56,587 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664861,664874] [2021-11-23 03:32:56,588 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665017,665030] [2021-11-23 03:32:56,589 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665181,665194] [2021-11-23 03:32:56,590 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665323,665336] [2021-11-23 03:32:56,591 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665481,665494] [2021-11-23 03:32:56,591 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665648,665661] [2021-11-23 03:32:56,592 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665807,665820] [2021-11-23 03:32:56,593 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665966,665979] [2021-11-23 03:32:56,594 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666115,666128] [2021-11-23 03:32:56,594 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666262,666275] [2021-11-23 03:32:56,595 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666401,666414] [2021-11-23 03:32:56,595 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666564,666577] [2021-11-23 03:32:56,596 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666730,666743] [2021-11-23 03:32:56,596 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666894,666907] [2021-11-23 03:32:56,596 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667059,667072] [2021-11-23 03:32:56,597 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667224,667237] [2021-11-23 03:32:56,597 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667390,667403] [2021-11-23 03:32:56,598 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667555,667568] [2021-11-23 03:32:56,599 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667722,667735] [2021-11-23 03:32:56,600 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667882,667895] [2021-11-23 03:32:56,601 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668044,668057] [2021-11-23 03:32:56,602 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668203,668216] [2021-11-23 03:32:56,606 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668349,668362] [2021-11-23 03:32:56,607 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668492,668505] [2021-11-23 03:32:56,607 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668636,668649] [2021-11-23 03:32:56,608 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668779,668792] [2021-11-23 03:32:56,609 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668923,668936] [2021-11-23 03:32:56,611 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669064,669077] [2021-11-23 03:32:56,612 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669202,669215] [2021-11-23 03:32:56,612 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669360,669373] [2021-11-23 03:32:56,618 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669519,669532] [2021-11-23 03:32:56,623 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669675,669688] [2021-11-23 03:32:56,623 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669824,669837] [2021-11-23 03:32:56,624 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669976,669989] [2021-11-23 03:32:56,624 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670127,670140] [2021-11-23 03:32:56,625 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670276,670289] [2021-11-23 03:32:56,625 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670428,670441] [2021-11-23 03:32:56,625 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670576,670589] [2021-11-23 03:32:56,626 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670729,670742] [2021-11-23 03:32:56,627 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670880,670893] [2021-11-23 03:32:56,627 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671030,671043] [2021-11-23 03:32:56,627 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671177,671190] [2021-11-23 03:32:56,628 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671328,671341] [2021-11-23 03:32:56,628 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671479,671492] [2021-11-23 03:32:56,630 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671627,671640] [2021-11-23 03:32:56,631 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671793,671806] [2021-11-23 03:32:56,631 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671962,671975] [2021-11-23 03:32:56,633 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672129,672142] [2021-11-23 03:32:56,633 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672297,672310] [2021-11-23 03:32:56,634 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672447,672460] [2021-11-23 03:32:56,634 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672594,672607] [2021-11-23 03:32:56,634 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672755,672768] [2021-11-23 03:32:56,635 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672925,672938] [2021-11-23 03:32:56,635 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_bc6819ad-f05a-43fc-9384-5e07b7600b33/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[673087,673100] [2021-11-23 03:32:56,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:57,154 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:32:57,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57 WrapperNode [2021-11-23 03:32:57,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:57,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:57,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:32:57,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:32:57,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:57,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:57,876 INFO L137 Inliner]: procedures = 981, calls = 6401, calls flagged for inlining = 457, calls inlined = 329, statements flattened = 12915 [2021-11-23 03:32:57,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:57,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:32:57,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:32:57,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:32:57,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:57,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:57,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:57,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:58,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:58,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:58,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:58,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:32:58,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:32:58,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:32:58,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:32:58,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (1/1) ... [2021-11-23 03:32:58,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:58,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:58,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:32:58,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:32:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-23 03:32:58,590 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-23 03:32:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-23 03:32:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2021-11-23 03:32:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2021-11-23 03:32:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_DeleteNSEntry [2021-11-23 03:32:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_DeleteNSEntry [2021-11-23 03:32:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure ncp__io2vol [2021-11-23 03:32:58,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp__io2vol [2021-11-23 03:32:58,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 03:32:58,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 03:32:58,594 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_dates [2021-11-23 03:32:58,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_dates [2021-11-23 03:32:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure __ncp_start_request [2021-11-23 03:32:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncp_start_request [2021-11-23 03:32:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 03:32:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 03:32:58,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:32:58,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 03:32:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_info [2021-11-23 03:32:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_info [2021-11-23 03:32:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_write [2021-11-23 03:32:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_write [2021-11-23 03:32:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-23 03:32:58,596 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-23 03:32:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure sign_packet [2021-11-23 03:32:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure sign_packet [2021-11-23 03:32:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_mmap_fault [2021-11-23 03:32:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_mmap_fault [2021-11-23 03:32:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_nfs_info [2021-11-23 03:32:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_nfs_info [2021-11-23 03:32:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure grab_cache_page [2021-11-23 03:32:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure grab_cache_page [2021-11-23 03:32:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___1 [2021-11-23 03:32:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___1 [2021-11-23 03:32:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___0 [2021-11-23 03:32:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___0 [2021-11-23 03:32:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_make_open [2021-11-23 03:32:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_make_open [2021-11-23 03:32:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:32:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:32:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-23 03:32:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-23 03:32:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-23 03:32:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-23 03:32:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-23 03:32:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-23 03:32:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:32:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:32:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 03:32:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 03:32:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:32:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_ioctl [2021-11-23 03:32:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_ioctl [2021-11-23 03:32:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 03:32:58,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 03:32:58,601 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-11-23 03:32:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-11-23 03:32:58,602 INFO L130 BoogieDeclarations]: Found specification of procedure iunique [2021-11-23 03:32:58,602 INFO L138 BoogieDeclarations]: Found implementation of procedure iunique [2021-11-23 03:32:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_le16 [2021-11-23 03:32:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_le16 [2021-11-23 03:32:58,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:32:58,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:32:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_statfs [2021-11-23 03:32:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_statfs [2021-11-23 03:32:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure assert_server_locked [2021-11-23 03:32:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_server_locked [2021-11-23 03:32:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 03:32:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 03:32:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_write_kernel [2021-11-23 03:32:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_write_kernel [2021-11-23 03:32:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 03:32:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 03:32:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_byte [2021-11-23 03:32:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_byte [2021-11-23 03:32:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:32:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-23 03:32:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-23 03:32:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~wchar_t~0~X~$Pointer$~X~int~TO~int [2021-11-23 03:32:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~wchar_t~0~X~$Pointer$~X~int~TO~int [2021-11-23 03:32:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_write [2021-11-23 03:32:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_write [2021-11-23 03:32:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:32:58,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:32:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:32:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_destroy_inode [2021-11-23 03:32:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_destroy_inode [2021-11-23 03:32:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_attrs [2021-11-23 03:32:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_attrs [2021-11-23 03:32:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:32:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:32:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:32:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:32:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_destroy [2021-11-23 03:32:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_destroy [2021-11-23 03:32:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 03:32:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 03:32:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_get_volume_root [2021-11-23 03:32:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_get_volume_root [2021-11-23 03:32:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:32:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:32:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_ncp_server [2021-11-23 03:32:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_ncp_server [2021-11-23 03:32:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure unload_nls [2021-11-23 03:32:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure unload_nls [2021-11-23 03:32:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_request [2021-11-23 03:32:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_request [2021-11-23 03:32:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_date_dos2unix [2021-11-23 03:32:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_date_dos2unix [2021-11-23 03:32:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_new_dentry [2021-11-23 03:32:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_new_dentry [2021-11-23 03:32:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-23 03:32:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-23 03:32:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:32:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:32:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure nls_tolower [2021-11-23 03:32:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure nls_tolower [2021-11-23 03:32:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:32:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:32:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:32:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:32:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_mutex_of_ncp_inode_info [2021-11-23 03:32:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_mutex_of_ncp_inode_info [2021-11-23 03:32:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_page [2021-11-23 03:32:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_page [2021-11-23 03:32:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-23 03:32:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-23 03:32:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure dir_emit [2021-11-23 03:32:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dir_emit [2021-11-23 03:32:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:32:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2021-11-23 03:32:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2021-11-23 03:32:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-23 03:32:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-23 03:32:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:32:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_146 [2021-11-23 03:32:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_146 [2021-11-23 03:32:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_rmdir [2021-11-23 03:32:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_rmdir [2021-11-23 03:32:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-23 03:32:58,624 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-23 03:32:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_read [2021-11-23 03:32:58,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_read [2021-11-23 03:32:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-23 03:32:58,624 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-23 03:32:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_i_mutex_of_inode [2021-11-23 03:32:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_i_mutex_of_inode [2021-11-23 03:32:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_compat_ioctl [2021-11-23 03:32:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_compat_ioctl [2021-11-23 03:32:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure WSET_LH [2021-11-23 03:32:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure WSET_LH [2021-11-23 03:32:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:32:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:32:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure setattr_copy [2021-11-23 03:32:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setattr_copy [2021-11-23 03:32:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-23 03:32:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-23 03:32:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_for_read_section [2021-11-23 03:32:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_for_read_section [2021-11-23 03:32:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 03:32:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 03:32:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_data [2021-11-23 03:32:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_data [2021-11-23 03:32:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:32:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:32:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:32:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 03:32:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 03:32:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:32:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 03:32:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 03:32:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_d_prune [2021-11-23 03:32:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_d_prune [2021-11-23 03:32:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2021-11-23 03:32:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2021-11-23 03:32:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_byte [2021-11-23 03:32:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_byte [2021-11-23 03:32:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_header [2021-11-23 03:32:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_header [2021-11-23 03:32:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure pagecache_get_page [2021-11-23 03:32:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure pagecache_get_page [2021-11-23 03:32:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_mem [2021-11-23 03:32:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_mem [2021-11-23 03:32:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure kill_anon_super [2021-11-23 03:32:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_anon_super [2021-11-23 03:32:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_root_setup_lock_of_ncp_server [2021-11-23 03:32:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_root_setup_lock_of_ncp_server [2021-11-23 03:32:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_is_server_root [2021-11-23 03:32:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_is_server_root [2021-11-23 03:32:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_is_nfs_extras [2021-11-23 03:32:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_is_nfs_extras [2021-11-23 03:32:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_release [2021-11-23 03:32:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_release [2021-11-23 03:32:58,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 03:32:58,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 03:32:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure ncpdgram_send [2021-11-23 03:32:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ncpdgram_send [2021-11-23 03:32:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 03:32:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 03:32:58,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-23 03:32:58,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-23 03:32:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_inode_close [2021-11-23 03:32:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_inode_close [2021-11-23 03:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure NCP_FINFO [2021-11-23 03:32:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure NCP_FINFO [2021-11-23 03:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure ncp__vol2io [2021-11-23 03:32:58,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp__vol2io [2021-11-23 03:32:58,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_creq_mutex_of_NOT_ARG_SIGN [2021-11-23 03:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_creq_mutex_of_NOT_ARG_SIGN [2021-11-23 03:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_RenameNSEntry [2021-11-23 03:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_RenameNSEntry [2021-11-23 03:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_i_mutex_of_inode [2021-11-23 03:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_i_mutex_of_inode [2021-11-23 03:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-23 03:32:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-23 03:32:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_notify_change [2021-11-23 03:32:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_notify_change [2021-11-23 03:32:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_75 [2021-11-23 03:32:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_75 [2021-11-23 03:32:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_dword [2021-11-23 03:32:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_dword [2021-11-23 03:32:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 03:32:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 03:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure mark_inode_dirty [2021-11-23 03:32:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_inode_dirty [2021-11-23 03:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_inode [2021-11-23 03:32:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_inode [2021-11-23 03:32:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_del_file_or_subdir [2021-11-23 03:32:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_del_file_or_subdir [2021-11-23 03:32:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:32:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:32:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_create_new [2021-11-23 03:32:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_create_new [2021-11-23 03:32:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-23 03:32:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-23 03:32:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 03:32:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 03:32:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_request [2021-11-23 03:32:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_request [2021-11-23 03:32:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure PageUptodate [2021-11-23 03:32:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure PageUptodate [2021-11-23 03:32:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 03:32:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 03:32:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-11-23 03:32:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-11-23 03:32:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure NCP_SBP [2021-11-23 03:32:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure NCP_SBP [2021-11-23 03:32:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2021-11-23 03:32:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2021-11-23 03:32:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_hash_dentry [2021-11-23 03:32:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_hash_dentry [2021-11-23 03:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure load_nls_default [2021-11-23 03:32:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure load_nls_default [2021-11-23 03:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:32:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_open_create_file_or_subdir [2021-11-23 03:32:58,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_open_create_file_or_subdir [2021-11-23 03:32:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 03:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 03:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 03:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 03:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:32:58,642 INFO L130 BoogieDeclarations]: Found specification of procedure WVAL_LH___0 [2021-11-23 03:32:58,642 INFO L138 BoogieDeclarations]: Found implementation of procedure WVAL_LH___0 [2021-11-23 03:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure d_rehash [2021-11-23 03:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure d_rehash [2021-11-23 03:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_evict_inode [2021-11-23 03:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_evict_inode [2021-11-23 03:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_show_options [2021-11-23 03:32:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_show_options [2021-11-23 03:32:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-23 03:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-23 03:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 03:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 03:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure generic_file_llseek [2021-11-23 03:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_file_llseek [2021-11-23 03:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_before_release_sock [2021-11-23 03:32:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_before_release_sock [2021-11-23 03:32:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_be16 [2021-11-23 03:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_be16 [2021-11-23 03:32:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_make_closed [2021-11-23 03:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_make_closed [2021-11-23 03:32:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:32:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_del_file_or_subdir2 [2021-11-23 03:32:58,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_del_file_or_subdir2 [2021-11-23 03:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_modify_nfs_info [2021-11-23 03:32:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_modify_nfs_info [2021-11-23 03:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_case_sensitive [2021-11-23 03:32:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_case_sensitive [2021-11-23 03:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:32:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:32:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-23 03:32:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-23 03:32:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_inodecache [2021-11-23 03:32:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_inodecache [2021-11-23 03:32:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:32:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~~loff_t~0~X~~u64~0~X~int~TO~int [2021-11-23 03:32:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~~loff_t~0~X~~u64~0~X~int~TO~int [2021-11-23 03:32:58,647 INFO L130 BoogieDeclarations]: Found specification of procedure __ncp_abort_request [2021-11-23 03:32:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncp_abort_request [2021-11-23 03:32:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-23 03:32:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-23 03:32:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-23 03:32:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_word [2021-11-23 03:32:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_word [2021-11-23 03:32:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_dword_lh [2021-11-23 03:32:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_dword_lh [2021-11-23 03:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_do_request [2021-11-23 03:32:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_do_request [2021-11-23 03:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 03:32:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 03:32:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_inode_close___3 [2021-11-23 03:32:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_inode_close___3 [2021-11-23 03:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_date_unix2dos [2021-11-23 03:32:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_date_unix2dos [2021-11-23 03:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-23 03:32:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-23 03:32:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-23 03:32:58,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-23 03:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:32:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_ren_or_mov_file_or_subdir [2021-11-23 03:32:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_ren_or_mov_file_or_subdir [2021-11-23 03:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 03:32:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 03:32:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-23 03:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-23 03:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_creq_mutex_of_NOT_ARG_SIGN [2021-11-23 03:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_creq_mutex_of_NOT_ARG_SIGN [2021-11-23 03:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_request2 [2021-11-23 03:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_request2 [2021-11-23 03:32:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:32:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:32:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_request_s [2021-11-23 03:32:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_request_s [2021-11-23 03:32:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 03:32:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 03:32:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 03:32:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 03:32:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_lock_server [2021-11-23 03:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_lock_server [2021-11-23 03:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure DSET_LH [2021-11-23 03:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure DSET_LH [2021-11-23 03:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_close_file [2021-11-23 03:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_close_file [2021-11-23 03:32:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure nwsign [2021-11-23 03:32:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure nwsign [2021-11-23 03:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-23 03:32:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-23 03:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_known_namespace [2021-11-23 03:32:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_known_namespace [2021-11-23 03:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure load_nls [2021-11-23 03:32:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure load_nls [2021-11-23 03:32:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_net_sock__double_release [2021-11-23 03:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_net_sock__double_release [2021-11-23 03:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure DVAL_LH___0 [2021-11-23 03:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure DVAL_LH___0 [2021-11-23 03:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_readdir [2021-11-23 03:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_readdir [2021-11-23 03:32:58,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 03:32:58,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 03:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-23 03:32:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-23 03:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_read_kernel [2021-11-23 03:32:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_read_kernel [2021-11-23 03:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 03:32:58,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 03:32:58,657 INFO L130 BoogieDeclarations]: Found specification of procedure rol32 [2021-11-23 03:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure rol32 [2021-11-23 03:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-23 03:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-23 03:32:58,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:32:58,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 03:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_disconnect [2021-11-23 03:32:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_disconnect [2021-11-23 03:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure inode_permission [2021-11-23 03:32:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure inode_permission [2021-11-23 03:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_extract_file_info [2021-11-23 03:32:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_extract_file_info [2021-11-23 03:32:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_modify_file_or_subdir_dos_info_path [2021-11-23 03:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_modify_file_or_subdir_dos_info_path [2021-11-23 03:32:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_put_super [2021-11-23 03:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_put_super [2021-11-23 03:32:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_lookup_volume [2021-11-23 03:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_lookup_volume [2021-11-23 03:32:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure __ncptcp_try_send [2021-11-23 03:32:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncptcp_try_send [2021-11-23 03:32:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-23 03:32:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-23 03:32:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:32:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:32:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_mmap [2021-11-23 03:32:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_mmap [2021-11-23 03:32:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_be16 [2021-11-23 03:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_be16 [2021-11-23 03:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure do_send [2021-11-23 03:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure do_send [2021-11-23 03:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-23 03:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-23 03:32:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_pstring [2021-11-23 03:32:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_pstring [2021-11-23 03:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_root_setup_lock_of_ncp_server [2021-11-23 03:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_root_setup_lock_of_ncp_server [2021-11-23 03:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-23 03:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-23 03:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_mtime [2021-11-23 03:32:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_mtime [2021-11-23 03:32:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_unlink [2021-11-23 03:32:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_unlink [2021-11-23 03:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_dword [2021-11-23 03:32:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_dword [2021-11-23 03:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-23 03:32:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-23 03:32:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure file_accessed [2021-11-23 03:32:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure file_accessed [2021-11-23 03:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-23 03:32:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-23 03:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_age_dentry [2021-11-23 03:32:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_age_dentry [2021-11-23 03:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_handle_path [2021-11-23 03:32:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_handle_path [2021-11-23 03:32:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-23 03:32:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-23 03:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-23 03:32:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-23 03:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 03:32:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 03:32:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-23 03:32:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-23 03:32:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 03:32:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 03:32:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_iget [2021-11-23 03:32:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_iget [2021-11-23 03:32:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:32:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:32:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_fill_cache [2021-11-23 03:32:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_fill_cache [2021-11-23 03:32:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_stop_tasks [2021-11-23 03:32:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_stop_tasks [2021-11-23 03:32:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_dirent [2021-11-23 03:32:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_dirent [2021-11-23 03:32:58,668 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_instantiate [2021-11-23 03:32:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_instantiate [2021-11-23 03:32:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_single_volume [2021-11-23 03:32:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_single_volume [2021-11-23 03:32:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_symlink_readpage [2021-11-23 03:32:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_symlink_readpage [2021-11-23 03:32:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 03:32:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 03:32:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure DVAL_LH [2021-11-23 03:32:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure DVAL_LH [2021-11-23 03:32:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-23 03:32:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-23 03:32:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_74 [2021-11-23 03:32:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_74 [2021-11-23 03:32:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_dword_lh [2021-11-23 03:32:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_dword_lh [2021-11-23 03:32:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 03:32:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 03:32:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:32:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:32:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_siglock_of_sighand_struct [2021-11-23 03:32:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_siglock_of_sighand_struct [2021-11-23 03:32:58,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 03:32:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 03:32:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageUptodate [2021-11-23 03:32:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageUptodate [2021-11-23 03:32:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-23 03:32:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-23 03:32:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 03:32:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 03:32:58,672 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_req_put [2021-11-23 03:32:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_req_put [2021-11-23 03:32:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 03:32:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 03:32:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 03:32:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 03:32:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_conn_valid [2021-11-23 03:32:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_conn_valid [2021-11-23 03:32:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 03:32:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 03:32:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:32:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:32:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_be32 [2021-11-23 03:32:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_be32 [2021-11-23 03:32:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_mutex_of_ncp_inode_info [2021-11-23 03:32:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_mutex_of_ncp_inode_info [2021-11-23 03:32:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_finish_request [2021-11-23 03:32:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_finish_request [2021-11-23 03:32:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 03:32:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 03:32:58,675 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_inode2 [2021-11-23 03:32:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_inode2 [2021-11-23 03:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:32:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-23 03:32:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-23 03:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_unlock_server [2021-11-23 03:32:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_unlock_server [2021-11-23 03:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2021-11-23 03:32:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2021-11-23 03:33:00,388 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:33:00,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:33:00,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:33:15,302 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:33:17,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:33:17,652 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-23 03:33:17,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:17 BoogieIcfgContainer [2021-11-23 03:33:17,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:33:17,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:33:17,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:33:17,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:33:17,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:45" (1/3) ... [2021-11-23 03:33:17,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fecb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:17, skipping insertion in model container [2021-11-23 03:33:17,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:57" (2/3) ... [2021-11-23 03:33:17,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fecb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:17, skipping insertion in model container [2021-11-23 03:33:17,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:17" (3/3) ... [2021-11-23 03:33:17,672 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-23 03:33:17,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:33:17,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-23 03:33:17,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:33:17,771 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 03:33:17,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-23 03:33:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 3581 states, 2044 states have (on average 1.3087084148727985) internal successors, (2675), 2136 states have internal predecessors, (2675), 1261 states have call successors, (1261), 246 states have call predecessors, (1261), 245 states have return successors, (1252), 1230 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-23 03:33:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:33:17,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:17,884 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:33:17,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_for_read_sectionErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash -525218347, now seen corresponding path program 1 times [2021-11-23 03:33:17,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:17,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281314762] [2021-11-23 03:33:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:33:18,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:18,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281314762] [2021-11-23 03:33:18,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281314762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:18,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:18,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:18,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534245801] [2021-11-23 03:33:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:18,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:18,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:18,667 INFO L87 Difference]: Start difference. First operand has 3581 states, 2044 states have (on average 1.3087084148727985) internal successors, (2675), 2136 states have internal predecessors, (2675), 1261 states have call successors, (1261), 246 states have call predecessors, (1261), 245 states have return successors, (1252), 1230 states have call predecessors, (1252), 1252 states have call successors, (1252) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:24,126 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 03:33:26,516 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 03:33:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:26,619 INFO L93 Difference]: Finished difference Result 7111 states and 10670 transitions. [2021-11-23 03:33:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:26,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-11-23 03:33:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:26,706 INFO L225 Difference]: With dead ends: 7111 [2021-11-23 03:33:26,706 INFO L226 Difference]: Without dead ends: 3534 [2021-11-23 03:33:26,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:26,759 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 5082 mSDsluCounter, 5072 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5087 SdHoareTripleChecker+Valid, 9206 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:26,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5087 Valid, 9206 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 03:33:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2021-11-23 03:33:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3532. [2021-11-23 03:33:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2019 states have (on average 1.283308568598316) internal successors, (2591), 2094 states have internal predecessors, (2591), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:33:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 5063 transitions. [2021-11-23 03:33:27,191 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 5063 transitions. Word has length 35 [2021-11-23 03:33:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:27,192 INFO L470 AbstractCegarLoop]: Abstraction has 3532 states and 5063 transitions. [2021-11-23 03:33:27,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 5063 transitions. [2021-11-23 03:33:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:33:27,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:27,198 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:33:27,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:33:27,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_for_read_sectionErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2080798498, now seen corresponding path program 1 times [2021-11-23 03:33:27,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:27,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109274088] [2021-11-23 03:33:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:27,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:33:27,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109274088] [2021-11-23 03:33:27,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109274088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:27,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:27,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:27,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245582209] [2021-11-23 03:33:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:27,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:27,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:27,512 INFO L87 Difference]: Start difference. First operand 3532 states and 5063 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:33,781 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 03:33:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:33,858 INFO L93 Difference]: Finished difference Result 3534 states and 5066 transitions. [2021-11-23 03:33:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-23 03:33:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:33,892 INFO L225 Difference]: With dead ends: 3534 [2021-11-23 03:33:33,892 INFO L226 Difference]: Without dead ends: 3532 [2021-11-23 03:33:33,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:33,896 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5049 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 9159 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:33,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 9159 Invalid, 952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:33:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-23 03:33:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3530. [2021-11-23 03:33:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2018 states have (on average 1.2829534192269574) internal successors, (2589), 2092 states have internal predecessors, (2589), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:33:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 5061 transitions. [2021-11-23 03:33:34,166 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 5061 transitions. Word has length 37 [2021-11-23 03:33:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:34,167 INFO L470 AbstractCegarLoop]: Abstraction has 3530 states and 5061 transitions. [2021-11-23 03:33:34,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 5061 transitions. [2021-11-23 03:33:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 03:33:34,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:34,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:33:34,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:33:34,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_for_read_sectionErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1797732308, now seen corresponding path program 1 times [2021-11-23 03:33:34,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:34,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816063291] [2021-11-23 03:33:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:34,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:33:34,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:34,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816063291] [2021-11-23 03:33:34,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816063291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:34,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:34,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:34,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812425334] [2021-11-23 03:33:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:34,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:34,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:34,487 INFO L87 Difference]: Start difference. First operand 3530 states and 5061 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:36,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:42,743 WARN L534 Checker$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 03:33:46,057 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 03:33:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:46,137 INFO L93 Difference]: Finished difference Result 3530 states and 5061 transitions. [2021-11-23 03:33:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2021-11-23 03:33:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:46,170 INFO L225 Difference]: With dead ends: 3530 [2021-11-23 03:33:46,171 INFO L226 Difference]: Without dead ends: 3528 [2021-11-23 03:33:46,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:46,175 INFO L933 BasicCegarLoop]: 4580 mSDtfsCounter, 5042 mSDsluCounter, 5051 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 9157 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:46,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5045 Valid, 9157 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 03:33:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-11-23 03:33:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3528. [2021-11-23 03:33:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 2017 states have (on average 1.282597917699554) internal successors, (2587), 2090 states have internal predecessors, (2587), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:33:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 5059 transitions. [2021-11-23 03:33:46,418 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 5059 transitions. Word has length 39 [2021-11-23 03:33:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:46,419 INFO L470 AbstractCegarLoop]: Abstraction has 3528 states and 5059 transitions. [2021-11-23 03:33:46,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 5059 transitions. [2021-11-23 03:33:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:33:46,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:46,426 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:33:46,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:33:46,427 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_for_read_sectionErr3ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1034358102, now seen corresponding path program 1 times [2021-11-23 03:33:46,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:46,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115663565] [2021-11-23 03:33:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:46,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 03:33:46,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:46,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115663565] [2021-11-23 03:33:46,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115663565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:46,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:46,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:46,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105748932] [2021-11-23 03:33:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:46,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:46,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:46,719 INFO L87 Difference]: Start difference. First operand 3528 states and 5059 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:53,378 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 03:33:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:53,455 INFO L93 Difference]: Finished difference Result 3530 states and 5062 transitions. [2021-11-23 03:33:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-11-23 03:33:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:53,489 INFO L225 Difference]: With dead ends: 3530 [2021-11-23 03:33:53,490 INFO L226 Difference]: Without dead ends: 3528 [2021-11-23 03:33:53,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:53,494 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 5033 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 9157 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:53,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5038 Valid, 9157 Invalid, 954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:33:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-11-23 03:33:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2021-11-23 03:33:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 2016 states have (on average 1.2822420634920635) internal successors, (2585), 2088 states have internal predecessors, (2585), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:33:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5057 transitions. [2021-11-23 03:33:53,786 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5057 transitions. Word has length 41 [2021-11-23 03:33:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:53,787 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 5057 transitions. [2021-11-23 03:33:53,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:33:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5057 transitions. [2021-11-23 03:33:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 03:33:53,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:53,791 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:33:53,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:33:53,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash -833602569, now seen corresponding path program 1 times [2021-11-23 03:33:53,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:53,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396322219] [2021-11-23 03:33:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:53,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:33:54,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396322219] [2021-11-23 03:33:54,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396322219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:54,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:54,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490794854] [2021-11-23 03:33:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:54,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:54,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:54,108 INFO L87 Difference]: Start difference. First operand 3526 states and 5057 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 03:33:59,395 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 03:33:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:59,467 INFO L93 Difference]: Finished difference Result 3528 states and 5060 transitions. [2021-11-23 03:33:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2021-11-23 03:33:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:59,498 INFO L225 Difference]: With dead ends: 3528 [2021-11-23 03:33:59,498 INFO L226 Difference]: Without dead ends: 3526 [2021-11-23 03:33:59,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:59,502 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 5035 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 9153 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:59,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5039 Valid, 9153 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:33:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2021-11-23 03:33:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3524. [2021-11-23 03:33:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 2015 states have (on average 1.2818858560794044) internal successors, (2583), 2086 states have internal predecessors, (2583), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:33:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 5055 transitions. [2021-11-23 03:33:59,747 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 5055 transitions. Word has length 49 [2021-11-23 03:33:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:59,748 INFO L470 AbstractCegarLoop]: Abstraction has 3524 states and 5055 transitions. [2021-11-23 03:33:59,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 03:33:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 5055 transitions. [2021-11-23 03:33:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:33:59,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:59,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:33:59,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:33:59,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:33:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -404712481, now seen corresponding path program 1 times [2021-11-23 03:33:59,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:59,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837857264] [2021-11-23 03:33:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:59,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:33:59,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837857264] [2021-11-23 03:33:59,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837857264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:59,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:59,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:59,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008623445] [2021-11-23 03:33:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:59,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:59,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:59,982 INFO L87 Difference]: Start difference. First operand 3524 states and 5055 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:34:04,535 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 03:34:06,576 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 03:34:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:06,656 INFO L93 Difference]: Finished difference Result 3524 states and 5055 transitions. [2021-11-23 03:34:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2021-11-23 03:34:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:06,686 INFO L225 Difference]: With dead ends: 3524 [2021-11-23 03:34:06,686 INFO L226 Difference]: Without dead ends: 3522 [2021-11-23 03:34:06,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:06,690 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5033 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5035 SdHoareTripleChecker+Valid, 9148 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:06,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5035 Valid, 9148 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:34:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2021-11-23 03:34:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3522. [2021-11-23 03:34:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 2014 states have (on average 1.2815292949354518) internal successors, (2581), 2084 states have internal predecessors, (2581), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:34:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5053 transitions. [2021-11-23 03:34:06,933 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5053 transitions. Word has length 54 [2021-11-23 03:34:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:06,937 INFO L470 AbstractCegarLoop]: Abstraction has 3522 states and 5053 transitions. [2021-11-23 03:34:06,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:34:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5053 transitions. [2021-11-23 03:34:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:34:06,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:06,940 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:34:06,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:34:06,941 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1783224654, now seen corresponding path program 1 times [2021-11-23 03:34:06,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698797557] [2021-11-23 03:34:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:06,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:34:07,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698797557] [2021-11-23 03:34:07,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698797557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:07,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:07,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:07,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705458241] [2021-11-23 03:34:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:07,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:07,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:07,215 INFO L87 Difference]: Start difference. First operand 3522 states and 5053 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:09,558 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 03:34:14,598 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 03:34:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:14,680 INFO L93 Difference]: Finished difference Result 3524 states and 5056 transitions. [2021-11-23 03:34:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 59 [2021-11-23 03:34:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:14,712 INFO L225 Difference]: With dead ends: 3524 [2021-11-23 03:34:14,712 INFO L226 Difference]: Without dead ends: 3522 [2021-11-23 03:34:14,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:14,717 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 5026 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5032 SdHoareTripleChecker+Valid, 9145 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:14,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5032 Valid, 9145 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 03:34:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2021-11-23 03:34:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3520. [2021-11-23 03:34:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 2013 states have (on average 1.2811723795330352) internal successors, (2579), 2082 states have internal predecessors, (2579), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:34:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5051 transitions. [2021-11-23 03:34:14,973 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5051 transitions. Word has length 59 [2021-11-23 03:34:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:14,974 INFO L470 AbstractCegarLoop]: Abstraction has 3520 states and 5051 transitions. [2021-11-23 03:34:14,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5051 transitions. [2021-11-23 03:34:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:34:14,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:14,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:34:14,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:34:14,977 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash -374888497, now seen corresponding path program 1 times [2021-11-23 03:34:14,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:14,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865231099] [2021-11-23 03:34:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:14,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:34:15,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:15,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865231099] [2021-11-23 03:34:15,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865231099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:15,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:15,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:15,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600549782] [2021-11-23 03:34:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:15,225 INFO L87 Difference]: Start difference. First operand 3520 states and 5051 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:34:20,439 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 03:34:22,488 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 03:34:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:22,569 INFO L93 Difference]: Finished difference Result 3520 states and 5051 transitions. [2021-11-23 03:34:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2021-11-23 03:34:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:22,611 INFO L225 Difference]: With dead ends: 3520 [2021-11-23 03:34:22,612 INFO L226 Difference]: Without dead ends: 3518 [2021-11-23 03:34:22,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:22,615 INFO L933 BasicCegarLoop]: 4570 mSDtfsCounter, 5027 mSDsluCounter, 5046 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:22,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5029 Valid, 9140 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-23 03:34:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3518 states. [2021-11-23 03:34:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3518 to 3518. [2021-11-23 03:34:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2012 states have (on average 1.2808151093439364) internal successors, (2577), 2080 states have internal predecessors, (2577), 1237 states have call successors, (1237), 244 states have call predecessors, (1237), 243 states have return successors, (1235), 1221 states have call predecessors, (1235), 1235 states have call successors, (1235) [2021-11-23 03:34:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5049 transitions. [2021-11-23 03:34:22,844 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5049 transitions. Word has length 64 [2021-11-23 03:34:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:22,845 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 5049 transitions. [2021-11-23 03:34:22,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:34:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5049 transitions. [2021-11-23 03:34:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:34:22,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:22,848 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:22,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:34:22,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -13636979, now seen corresponding path program 1 times [2021-11-23 03:34:22,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289031771] [2021-11-23 03:34:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:22,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:34:23,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289031771] [2021-11-23 03:34:23,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289031771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:23,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:23,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:34:23,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061021487] [2021-11-23 03:34:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:23,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:23,120 INFO L87 Difference]: Start difference. First operand 3518 states and 5049 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:25,755 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 03:34:34,860 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 03:34:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:35,013 INFO L93 Difference]: Finished difference Result 6232 states and 9147 transitions. [2021-11-23 03:34:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:34:35,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-23 03:34:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:35,061 INFO L225 Difference]: With dead ends: 6232 [2021-11-23 03:34:35,061 INFO L226 Difference]: Without dead ends: 6230 [2021-11-23 03:34:35,067 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 03:34:35,068 INFO L933 BasicCegarLoop]: 6078 mSDtfsCounter, 3956 mSDsluCounter, 18399 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3964 SdHoareTripleChecker+Valid, 22912 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:35,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3964 Valid, 22912 Invalid, 2132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2127 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 03:34:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-11-23 03:34:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6051. [2021-11-23 03:34:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 3565 states have (on average 1.2948106591865358) internal successors, (4616), 3663 states have internal predecessors, (4616), 2048 states have call successors, (2048), 417 states have call predecessors, (2048), 412 states have return successors, (2293), 2023 states have call predecessors, (2293), 2046 states have call successors, (2293) [2021-11-23 03:34:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8957 transitions. [2021-11-23 03:34:35,682 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8957 transitions. Word has length 67 [2021-11-23 03:34:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:35,684 INFO L470 AbstractCegarLoop]: Abstraction has 6051 states and 8957 transitions. [2021-11-23 03:34:35,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8957 transitions. [2021-11-23 03:34:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 03:34:35,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:35,687 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:34:35,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:34:35,687 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -359530288, now seen corresponding path program 1 times [2021-11-23 03:34:35,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:35,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303037184] [2021-11-23 03:34:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:35,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:34:35,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:35,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303037184] [2021-11-23 03:34:35,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303037184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:35,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:35,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:35,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036694906] [2021-11-23 03:34:35,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:35,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:35,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:35,885 INFO L87 Difference]: Start difference. First operand 6051 states and 8957 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:34:38,293 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 03:34:43,785 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 03:34:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:43,859 INFO L93 Difference]: Finished difference Result 6053 states and 8960 transitions. [2021-11-23 03:34:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 69 [2021-11-23 03:34:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:43,897 INFO L225 Difference]: With dead ends: 6053 [2021-11-23 03:34:43,897 INFO L226 Difference]: Without dead ends: 6051 [2021-11-23 03:34:43,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:43,903 INFO L933 BasicCegarLoop]: 4568 mSDtfsCounter, 5020 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5026 SdHoareTripleChecker+Valid, 9137 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:43,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5026 Valid, 9137 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:34:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2021-11-23 03:34:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6051. [2021-11-23 03:34:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 3565 states have (on average 1.2945301542777) internal successors, (4615), 3663 states have internal predecessors, (4615), 2048 states have call successors, (2048), 417 states have call predecessors, (2048), 413 states have return successors, (2295), 2023 states have call predecessors, (2295), 2046 states have call successors, (2295) [2021-11-23 03:34:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8958 transitions. [2021-11-23 03:34:44,387 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8958 transitions. Word has length 69 [2021-11-23 03:34:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:44,388 INFO L470 AbstractCegarLoop]: Abstraction has 6051 states and 8958 transitions. [2021-11-23 03:34:44,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:34:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8958 transitions. [2021-11-23 03:34:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 03:34:44,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:44,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:34:44,392 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1772073539, now seen corresponding path program 1 times [2021-11-23 03:34:44,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:44,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372637223] [2021-11-23 03:34:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:44,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:34:44,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372637223] [2021-11-23 03:34:44,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372637223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:44,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:44,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:34:44,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37305109] [2021-11-23 03:34:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:44,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:44,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:44,783 INFO L87 Difference]: Start difference. First operand 6051 states and 8958 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:51,192 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 03:34:55,929 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 03:34:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:56,068 INFO L93 Difference]: Finished difference Result 6704 states and 9768 transitions. [2021-11-23 03:34:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:34:56,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2021-11-23 03:34:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:56,109 INFO L225 Difference]: With dead ends: 6704 [2021-11-23 03:34:56,109 INFO L226 Difference]: Without dead ends: 6702 [2021-11-23 03:34:56,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 03:34:56,116 INFO L933 BasicCegarLoop]: 5017 mSDtfsCounter, 4924 mSDsluCounter, 11871 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 15754 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:56,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4931 Valid, 15754 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1670 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 03:34:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2021-11-23 03:34:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6690. [2021-11-23 03:34:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6690 states, 3909 states have (on average 1.281657712970069) internal successors, (5010), 4013 states have internal predecessors, (5010), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 508 states have return successors, (2501), 2219 states have call predecessors, (2501), 2246 states have call successors, (2501) [2021-11-23 03:34:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 9759 transitions. [2021-11-23 03:34:56,650 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 9759 transitions. Word has length 70 [2021-11-23 03:34:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:56,651 INFO L470 AbstractCegarLoop]: Abstraction has 6690 states and 9759 transitions. [2021-11-23 03:34:56,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:34:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 9759 transitions. [2021-11-23 03:34:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:34:56,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:56,660 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:56,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:34:56,661 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:34:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1573100171, now seen corresponding path program 1 times [2021-11-23 03:34:56,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:56,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202154365] [2021-11-23 03:34:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:56,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:34:57,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:57,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202154365] [2021-11-23 03:34:57,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202154365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:57,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:57,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:34:57,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061788990] [2021-11-23 03:34:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:57,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:57,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:57,050 INFO L87 Difference]: Start difference. First operand 6690 states and 9759 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:35:00,026 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 03:35:11,679 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 03:35:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:11,788 INFO L93 Difference]: Finished difference Result 14353 states and 21207 transitions. [2021-11-23 03:35:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:35:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-23 03:35:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:11,835 INFO L225 Difference]: With dead ends: 14353 [2021-11-23 03:35:11,835 INFO L226 Difference]: Without dead ends: 7669 [2021-11-23 03:35:11,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 03:35:11,885 INFO L933 BasicCegarLoop]: 4808 mSDtfsCounter, 379 mSDsluCounter, 15364 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 18757 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:11,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 18757 Invalid, 2146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2144 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2021-11-23 03:35:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7669 states. [2021-11-23 03:35:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7669 to 6694. [2021-11-23 03:35:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6694 states, 3912 states have (on average 1.281441717791411) internal successors, (5013), 4016 states have internal predecessors, (5013), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 509 states have return successors, (2519), 2220 states have call predecessors, (2519), 2246 states have call successors, (2519) [2021-11-23 03:35:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6694 states to 6694 states and 9780 transitions. [2021-11-23 03:35:12,514 INFO L78 Accepts]: Start accepts. Automaton has 6694 states and 9780 transitions. Word has length 67 [2021-11-23 03:35:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:12,515 INFO L470 AbstractCegarLoop]: Abstraction has 6694 states and 9780 transitions. [2021-11-23 03:35:12,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:35:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6694 states and 9780 transitions. [2021-11-23 03:35:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:35:12,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:12,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:35:12,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:35:12,519 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:35:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 17810353, now seen corresponding path program 1 times [2021-11-23 03:35:12,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:12,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426376259] [2021-11-23 03:35:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:12,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:35:12,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:12,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426376259] [2021-11-23 03:35:12,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426376259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:12,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:12,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:35:12,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630301484] [2021-11-23 03:35:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:12,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:12,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:12,705 INFO L87 Difference]: Start difference. First operand 6694 states and 9780 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:35:18,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:20,376 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 03:35:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:20,478 INFO L93 Difference]: Finished difference Result 6694 states and 9780 transitions. [2021-11-23 03:35:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:20,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2021-11-23 03:35:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:20,520 INFO L225 Difference]: With dead ends: 6694 [2021-11-23 03:35:20,520 INFO L226 Difference]: Without dead ends: 6692 [2021-11-23 03:35:20,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:20,527 INFO L933 BasicCegarLoop]: 4566 mSDtfsCounter, 5021 mSDsluCounter, 5042 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5023 SdHoareTripleChecker+Valid, 9132 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:20,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5023 Valid, 9132 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-23 03:35:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6692 states. [2021-11-23 03:35:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6692 to 6692. [2021-11-23 03:35:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6692 states, 3911 states have (on average 1.2812579902838148) internal successors, (5011), 4014 states have internal predecessors, (5011), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 509 states have return successors, (2519), 2220 states have call predecessors, (2519), 2246 states have call successors, (2519) [2021-11-23 03:35:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6692 states to 6692 states and 9778 transitions. [2021-11-23 03:35:21,223 INFO L78 Accepts]: Start accepts. Automaton has 6692 states and 9778 transitions. Word has length 74 [2021-11-23 03:35:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:21,224 INFO L470 AbstractCegarLoop]: Abstraction has 6692 states and 9778 transitions. [2021-11-23 03:35:21,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:35:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6692 states and 9778 transitions. [2021-11-23 03:35:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:35:21,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:21,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:35:21,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:35:21,227 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:35:21,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1230532541, now seen corresponding path program 1 times [2021-11-23 03:35:21,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:21,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092513274] [2021-11-23 03:35:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:21,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:35:21,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:21,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092513274] [2021-11-23 03:35:21,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092513274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:21,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:21,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:35:21,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812585887] [2021-11-23 03:35:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:21,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:21,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:21,420 INFO L87 Difference]: Start difference. First operand 6692 states and 9778 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:35:28,436 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 03:35:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:28,532 INFO L93 Difference]: Finished difference Result 6692 states and 9778 transitions. [2021-11-23 03:35:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:28,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 79 [2021-11-23 03:35:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:28,574 INFO L225 Difference]: With dead ends: 6692 [2021-11-23 03:35:28,575 INFO L226 Difference]: Without dead ends: 6690 [2021-11-23 03:35:28,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:28,581 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 5018 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5020 SdHoareTripleChecker+Valid, 9128 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:28,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5020 Valid, 9128 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 03:35:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6690 states. [2021-11-23 03:35:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6690 to 6690. [2021-11-23 03:35:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6690 states, 3910 states have (on average 1.2810741687979539) internal successors, (5009), 4012 states have internal predecessors, (5009), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 509 states have return successors, (2519), 2220 states have call predecessors, (2519), 2246 states have call successors, (2519) [2021-11-23 03:35:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 9776 transitions. [2021-11-23 03:35:29,359 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 9776 transitions. Word has length 79 [2021-11-23 03:35:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:29,359 INFO L470 AbstractCegarLoop]: Abstraction has 6690 states and 9776 transitions. [2021-11-23 03:35:29,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:35:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 9776 transitions. [2021-11-23 03:35:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:35:29,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:29,362 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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] [2021-11-23 03:35:29,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:35:29,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:35:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2099526562, now seen corresponding path program 1 times [2021-11-23 03:35:29,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:29,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862202042] [2021-11-23 03:35:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:29,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:35:29,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:29,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862202042] [2021-11-23 03:35:29,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862202042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:29,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:29,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:35:29,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916014556] [2021-11-23 03:35:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:29,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:35:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:35:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:35:29,690 INFO L87 Difference]: Start difference. First operand 6690 states and 9776 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:35:33,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:47,415 WARN L534 Checker$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 03:35:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:47,793 INFO L93 Difference]: Finished difference Result 6690 states and 9776 transitions. [2021-11-23 03:35:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:35:47,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2021-11-23 03:35:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:47,830 INFO L225 Difference]: With dead ends: 6690 [2021-11-23 03:35:47,830 INFO L226 Difference]: Without dead ends: 6688 [2021-11-23 03:35:47,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:35:47,836 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 5012 mSDsluCounter, 12626 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5021 SdHoareTripleChecker+Valid, 15773 SdHoareTripleChecker+Invalid, 4375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:47,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5021 Valid, 15773 Invalid, 4375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4372 Invalid, 2 Unknown, 0 Unchecked, 17.5s Time] [2021-11-23 03:35:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2021-11-23 03:35:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 6688. [2021-11-23 03:35:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6688 states, 3909 states have (on average 1.2803786134561268) internal successors, (5005), 4010 states have internal predecessors, (5005), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 509 states have return successors, (2519), 2220 states have call predecessors, (2519), 2246 states have call successors, (2519) [2021-11-23 03:35:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 9772 transitions. [2021-11-23 03:35:48,436 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 9772 transitions. Word has length 80 [2021-11-23 03:35:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:48,437 INFO L470 AbstractCegarLoop]: Abstraction has 6688 states and 9772 transitions. [2021-11-23 03:35:48,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:35:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 9772 transitions. [2021-11-23 03:35:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:35:48,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:48,440 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:35:48,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:35:48,440 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:35:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash -257344587, now seen corresponding path program 1 times [2021-11-23 03:35:48,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:48,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705951099] [2021-11-23 03:35:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:48,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:35:48,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:48,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705951099] [2021-11-23 03:35:48,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705951099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:48,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:48,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:35:48,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806346261] [2021-11-23 03:35:48,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:48,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:35:48,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:35:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:35:48,642 INFO L87 Difference]: Start difference. First operand 6688 states and 9772 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:35:54,580 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 03:35:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:54,684 INFO L93 Difference]: Finished difference Result 6688 states and 9772 transitions. [2021-11-23 03:35:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:35:54,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 84 [2021-11-23 03:35:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:54,723 INFO L225 Difference]: With dead ends: 6688 [2021-11-23 03:35:54,723 INFO L226 Difference]: Without dead ends: 6686 [2021-11-23 03:35:54,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:35:54,730 INFO L933 BasicCegarLoop]: 4560 mSDtfsCounter, 5016 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5020 SdHoareTripleChecker+Valid, 9117 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:54,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5020 Valid, 9117 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 03:35:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6686 states. [2021-11-23 03:35:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6686 to 6686. [2021-11-23 03:35:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6686 states, 3908 states have (on average 1.2801944728761514) internal successors, (5003), 4008 states have internal predecessors, (5003), 2248 states have call successors, (2248), 514 states have call predecessors, (2248), 509 states have return successors, (2519), 2220 states have call predecessors, (2519), 2246 states have call successors, (2519) [2021-11-23 03:35:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6686 states to 6686 states and 9770 transitions. [2021-11-23 03:35:55,517 INFO L78 Accepts]: Start accepts. Automaton has 6686 states and 9770 transitions. Word has length 84 [2021-11-23 03:35:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:55,518 INFO L470 AbstractCegarLoop]: Abstraction has 6686 states and 9770 transitions. [2021-11-23 03:35:55,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:35:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6686 states and 9770 transitions. [2021-11-23 03:35:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:35:55,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:55,521 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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] [2021-11-23 03:35:55,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:35:55,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:35:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash -422295527, now seen corresponding path program 1 times [2021-11-23 03:35:55,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:55,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84246704] [2021-11-23 03:35:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:55,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:35:55,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:55,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84246704] [2021-11-23 03:35:55,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84246704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:55,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:55,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:35:55,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737779789] [2021-11-23 03:35:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:55,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:35:55,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:35:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:35:55,726 INFO L87 Difference]: Start difference. First operand 6686 states and 9770 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:36:00,780 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 03:36:03,143 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 03:36:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:03,239 INFO L93 Difference]: Finished difference Result 13389 states and 20042 transitions. [2021-11-23 03:36:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 83 [2021-11-23 03:36:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:03,297 INFO L225 Difference]: With dead ends: 13389 [2021-11-23 03:36:03,297 INFO L226 Difference]: Without dead ends: 6722 [2021-11-23 03:36:03,352 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 03:36:03,353 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5000 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5004 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:03,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5004 Valid, 4582 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 482 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:36:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2021-11-23 03:36:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 6716. [2021-11-23 03:36:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6716 states, 3927 states have (on average 1.2813852813852813) internal successors, (5032), 4028 states have internal predecessors, (5032), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 515 states have return successors, (2525), 2224 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 9811 transitions. [2021-11-23 03:36:04,080 INFO L78 Accepts]: Start accepts. Automaton has 6716 states and 9811 transitions. Word has length 83 [2021-11-23 03:36:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:04,081 INFO L470 AbstractCegarLoop]: Abstraction has 6716 states and 9811 transitions. [2021-11-23 03:36:04,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:36:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6716 states and 9811 transitions. [2021-11-23 03:36:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:36:04,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:04,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:36:04,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:36:04,084 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1800244312, now seen corresponding path program 1 times [2021-11-23 03:36:04,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:04,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286524315] [2021-11-23 03:36:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:04,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:36:04,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:04,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286524315] [2021-11-23 03:36:04,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286524315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:04,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:04,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:36:04,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107050679] [2021-11-23 03:36:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:04,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:04,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:04,261 INFO L87 Difference]: Start difference. First operand 6716 states and 9811 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:36:06,657 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 03:36:12,610 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 03:36:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:12,719 INFO L93 Difference]: Finished difference Result 6716 states and 9811 transitions. [2021-11-23 03:36:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:36:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2021-11-23 03:36:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:12,758 INFO L225 Difference]: With dead ends: 6716 [2021-11-23 03:36:12,758 INFO L226 Difference]: Without dead ends: 6714 [2021-11-23 03:36:12,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:12,766 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 5003 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5007 SdHoareTripleChecker+Valid, 9107 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:12,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5007 Valid, 9107 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 03:36:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2021-11-23 03:36:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 6714. [2021-11-23 03:36:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 3926 states have (on average 1.2812022414671422) internal successors, (5030), 4026 states have internal predecessors, (5030), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 515 states have return successors, (2525), 2224 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 9809 transitions. [2021-11-23 03:36:13,424 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 9809 transitions. Word has length 86 [2021-11-23 03:36:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:13,424 INFO L470 AbstractCegarLoop]: Abstraction has 6714 states and 9809 transitions. [2021-11-23 03:36:13,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 03:36:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 9809 transitions. [2021-11-23 03:36:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 03:36:13,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:13,427 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:36:13,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:36:13,427 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1773400109, now seen corresponding path program 1 times [2021-11-23 03:36:13,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389094427] [2021-11-23 03:36:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:13,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:36:13,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389094427] [2021-11-23 03:36:13,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389094427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:13,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:13,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:36:13,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580521263] [2021-11-23 03:36:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:13,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:13,619 INFO L87 Difference]: Start difference. First operand 6714 states and 9809 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:36:16,056 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 03:36:22,739 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 03:36:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:22,852 INFO L93 Difference]: Finished difference Result 6714 states and 9809 transitions. [2021-11-23 03:36:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:36:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2021-11-23 03:36:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:22,895 INFO L225 Difference]: With dead ends: 6714 [2021-11-23 03:36:22,908 INFO L226 Difference]: Without dead ends: 6712 [2021-11-23 03:36:22,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:22,913 INFO L933 BasicCegarLoop]: 4551 mSDtfsCounter, 5003 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5005 SdHoareTripleChecker+Valid, 9102 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:22,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5005 Valid, 9102 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 03:36:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2021-11-23 03:36:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 6712. [2021-11-23 03:36:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6712 states, 3925 states have (on average 1.2810191082802547) internal successors, (5028), 4024 states have internal predecessors, (5028), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 515 states have return successors, (2525), 2224 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6712 states to 6712 states and 9807 transitions. [2021-11-23 03:36:23,481 INFO L78 Accepts]: Start accepts. Automaton has 6712 states and 9807 transitions. Word has length 91 [2021-11-23 03:36:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:23,481 INFO L470 AbstractCegarLoop]: Abstraction has 6712 states and 9807 transitions. [2021-11-23 03:36:23,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:36:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6712 states and 9807 transitions. [2021-11-23 03:36:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 03:36:23,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:23,484 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:36:23,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:36:23,484 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:23,485 INFO L85 PathProgramCache]: Analyzing trace with hash -139423166, now seen corresponding path program 1 times [2021-11-23 03:36:23,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:23,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442832780] [2021-11-23 03:36:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:23,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:36:23,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:23,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442832780] [2021-11-23 03:36:23,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442832780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:23,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:23,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:36:23,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557496664] [2021-11-23 03:36:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:23,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:23,644 INFO L87 Difference]: Start difference. First operand 6712 states and 9807 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:36:29,413 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 03:36:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:29,509 INFO L93 Difference]: Finished difference Result 6712 states and 9807 transitions. [2021-11-23 03:36:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:36:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2021-11-23 03:36:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:29,536 INFO L225 Difference]: With dead ends: 6712 [2021-11-23 03:36:29,536 INFO L226 Difference]: Without dead ends: 6710 [2021-11-23 03:36:29,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:29,542 INFO L933 BasicCegarLoop]: 4548 mSDtfsCounter, 4999 mSDsluCounter, 5024 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 9097 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:29,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 9097 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 03:36:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2021-11-23 03:36:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6710. [2021-11-23 03:36:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 3924 states have (on average 1.280835881753313) internal successors, (5026), 4022 states have internal predecessors, (5026), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 515 states have return successors, (2525), 2224 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 9805 transitions. [2021-11-23 03:36:30,220 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 9805 transitions. Word has length 96 [2021-11-23 03:36:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:30,221 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 9805 transitions. [2021-11-23 03:36:30,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:36:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 9805 transitions. [2021-11-23 03:36:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 03:36:30,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:30,224 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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] [2021-11-23 03:36:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:36:30,224 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1572937484, now seen corresponding path program 1 times [2021-11-23 03:36:30,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:30,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718472238] [2021-11-23 03:36:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:30,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:36:30,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:30,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718472238] [2021-11-23 03:36:30,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718472238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:30,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:30,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:36:30,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058290035] [2021-11-23 03:36:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:36:30,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:36:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:30,577 INFO L87 Difference]: Start difference. First operand 6710 states and 9805 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:36:41,478 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 03:36:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:41,621 INFO L93 Difference]: Finished difference Result 6883 states and 9987 transitions. [2021-11-23 03:36:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:36:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 102 [2021-11-23 03:36:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:41,645 INFO L225 Difference]: With dead ends: 6883 [2021-11-23 03:36:41,646 INFO L226 Difference]: Without dead ends: 6881 [2021-11-23 03:36:41,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:36:41,650 INFO L933 BasicCegarLoop]: 7587 mSDtfsCounter, 5130 mSDsluCounter, 20731 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5133 SdHoareTripleChecker+Valid, 26312 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:41,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5133 Valid, 26312 Invalid, 2831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2830 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-11-23 03:36:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2021-11-23 03:36:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 6721. [2021-11-23 03:36:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 3932 states have (on average 1.280264496439471) internal successors, (5034), 4030 states have internal predecessors, (5034), 2254 states have call successors, (2254), 522 states have call predecessors, (2254), 518 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9813 transitions. [2021-11-23 03:36:42,184 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9813 transitions. Word has length 102 [2021-11-23 03:36:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:42,184 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9813 transitions. [2021-11-23 03:36:42,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:36:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9813 transitions. [2021-11-23 03:36:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 03:36:42,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:42,188 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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] [2021-11-23 03:36:42,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:36:42,188 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1818547849, now seen corresponding path program 1 times [2021-11-23 03:36:42,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927723748] [2021-11-23 03:36:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:42,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:36:42,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927723748] [2021-11-23 03:36:42,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927723748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:42,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:42,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:36:42,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193576809] [2021-11-23 03:36:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:42,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:36:42,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:36:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:36:42,403 INFO L87 Difference]: Start difference. First operand 6721 states and 9813 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:36:46,235 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 03:36:52,638 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 03:36:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:52,748 INFO L93 Difference]: Finished difference Result 6743 states and 9829 transitions. [2021-11-23 03:36:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:36:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 104 [2021-11-23 03:36:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:52,768 INFO L225 Difference]: With dead ends: 6743 [2021-11-23 03:36:52,768 INFO L226 Difference]: Without dead ends: 6741 [2021-11-23 03:36:52,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 03:36:52,772 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 4943 mSDsluCounter, 10112 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 13709 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:52,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 13709 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1441 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 03:36:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-11-23 03:36:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6739. [2021-11-23 03:36:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 3944 states have (on average 1.2794117647058822) internal successors, (5046), 4042 states have internal predecessors, (5046), 2254 states have call successors, (2254), 528 states have call predecessors, (2254), 524 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:36:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 9825 transitions. [2021-11-23 03:36:53,207 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 9825 transitions. Word has length 104 [2021-11-23 03:36:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 6739 states and 9825 transitions. [2021-11-23 03:36:53,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:36:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 9825 transitions. [2021-11-23 03:36:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 03:36:53,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:53,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:36:53,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:36:53,210 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:36:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1964348479, now seen corresponding path program 1 times [2021-11-23 03:36:53,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:53,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984507217] [2021-11-23 03:36:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:53,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:36:53,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984507217] [2021-11-23 03:36:53,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984507217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:53,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:53,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:36:53,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940884639] [2021-11-23 03:36:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:53,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:53,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:53,415 INFO L87 Difference]: Start difference. First operand 6739 states and 9825 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:36:58,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:00,788 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 03:37:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:00,890 INFO L93 Difference]: Finished difference Result 6739 states and 9825 transitions. [2021-11-23 03:37:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:00,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2021-11-23 03:37:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:00,911 INFO L225 Difference]: With dead ends: 6739 [2021-11-23 03:37:00,911 INFO L226 Difference]: Without dead ends: 6737 [2021-11-23 03:37:00,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:00,915 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 4997 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4999 SdHoareTripleChecker+Valid, 9094 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:00,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4999 Valid, 9094 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 03:37:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2021-11-23 03:37:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6737. [2021-11-23 03:37:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6737 states, 3943 states have (on average 1.279229013441542) internal successors, (5044), 4040 states have internal predecessors, (5044), 2254 states have call successors, (2254), 528 states have call predecessors, (2254), 524 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:37:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6737 states to 6737 states and 9823 transitions. [2021-11-23 03:37:01,384 INFO L78 Accepts]: Start accepts. Automaton has 6737 states and 9823 transitions. Word has length 101 [2021-11-23 03:37:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:01,384 INFO L470 AbstractCegarLoop]: Abstraction has 6737 states and 9823 transitions. [2021-11-23 03:37:01,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:37:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 6737 states and 9823 transitions. [2021-11-23 03:37:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 03:37:01,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:01,387 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 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] [2021-11-23 03:37:01,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:37:01,387 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:37:01,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1116780513, now seen corresponding path program 1 times [2021-11-23 03:37:01,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:01,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052067280] [2021-11-23 03:37:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:01,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-23 03:37:01,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:01,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052067280] [2021-11-23 03:37:01,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052067280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:01,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:01,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:37:01,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143098913] [2021-11-23 03:37:01,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:01,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:37:01,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:37:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:01,619 INFO L87 Difference]: Start difference. First operand 6737 states and 9823 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:37:05,542 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 03:37:07,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:15,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:17,662 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 03:37:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:17,806 INFO L93 Difference]: Finished difference Result 6749 states and 9831 transitions. [2021-11-23 03:37:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:37:17,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2021-11-23 03:37:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:17,823 INFO L225 Difference]: With dead ends: 6749 [2021-11-23 03:37:17,823 INFO L226 Difference]: Without dead ends: 6747 [2021-11-23 03:37:17,825 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 03:37:17,826 INFO L933 BasicCegarLoop]: 5110 mSDtfsCounter, 792 mSDsluCounter, 16248 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 19781 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:17,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 19781 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2149 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2021-11-23 03:37:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6747 states. [2021-11-23 03:37:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6747 to 6741. [2021-11-23 03:37:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6741 states, 3946 states have (on average 1.2787633046122655) internal successors, (5046), 4043 states have internal predecessors, (5046), 2254 states have call successors, (2254), 529 states have call predecessors, (2254), 525 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:37:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6741 states to 6741 states and 9825 transitions. [2021-11-23 03:37:18,257 INFO L78 Accepts]: Start accepts. Automaton has 6741 states and 9825 transitions. Word has length 106 [2021-11-23 03:37:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:18,257 INFO L470 AbstractCegarLoop]: Abstraction has 6741 states and 9825 transitions. [2021-11-23 03:37:18,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:37:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 6741 states and 9825 transitions. [2021-11-23 03:37:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 03:37:18,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:18,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:37:18,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:37:18,262 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:37:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:18,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1544486368, now seen corresponding path program 1 times [2021-11-23 03:37:18,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:18,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056098167] [2021-11-23 03:37:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:18,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:37:18,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:18,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056098167] [2021-11-23 03:37:18,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056098167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:18,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:18,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:18,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251518306] [2021-11-23 03:37:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:18,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:18,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:18,423 INFO L87 Difference]: Start difference. First operand 6741 states and 9825 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:37:21,244 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 03:37:26,425 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 03:37:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:26,520 INFO L93 Difference]: Finished difference Result 6741 states and 9825 transitions. [2021-11-23 03:37:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 106 [2021-11-23 03:37:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:26,538 INFO L225 Difference]: With dead ends: 6741 [2021-11-23 03:37:26,538 INFO L226 Difference]: Without dead ends: 6739 [2021-11-23 03:37:26,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:26,542 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 4993 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 9091 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:26,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4997 Valid, 9091 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:37:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6739 states. [2021-11-23 03:37:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6739 to 6739. [2021-11-23 03:37:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 3945 states have (on average 1.2785804816223068) internal successors, (5044), 4041 states have internal predecessors, (5044), 2254 states have call successors, (2254), 529 states have call predecessors, (2254), 525 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-23 03:37:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 9823 transitions. [2021-11-23 03:37:27,019 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 9823 transitions. Word has length 106 [2021-11-23 03:37:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:27,019 INFO L470 AbstractCegarLoop]: Abstraction has 6739 states and 9823 transitions. [2021-11-23 03:37:27,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:37:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 9823 transitions. [2021-11-23 03:37:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 03:37:27,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:27,022 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 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] [2021-11-23 03:37:27,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 03:37:27,023 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_net_sock__double_releaseErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:37:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash -876281961, now seen corresponding path program 1 times [2021-11-23 03:37:27,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:27,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309756085] [2021-11-23 03:37:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:27,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:37:27,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:27,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309756085] [2021-11-23 03:37:27,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309756085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:27,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:27,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:37:27,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649755794] [2021-11-23 03:37:27,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:27,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:37:27,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:37:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:37:27,279 INFO L87 Difference]: Start difference. First operand 6739 states and 9823 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:38:05,104 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 03:38:06,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:08,274 INFO L93 Difference]: Finished difference Result 13355 states and 19491 transitions. [2021-11-23 03:38:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:38:08,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 111 [2021-11-23 03:38:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:08,313 INFO L225 Difference]: With dead ends: 13355 [2021-11-23 03:38:08,313 INFO L226 Difference]: Without dead ends: 13353 [2021-11-23 03:38:08,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:38:08,319 INFO L933 BasicCegarLoop]: 4792 mSDtfsCounter, 9540 mSDsluCounter, 14238 mSDsCounter, 0 mSdLazyCounter, 18749 mSolverCounterSat, 3675 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10502 SdHoareTripleChecker+Valid, 17424 SdHoareTripleChecker+Invalid, 22425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3675 IncrementalHoareTripleChecker+Valid, 18749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:08,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10502 Valid, 17424 Invalid, 22425 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3675 Valid, 18749 Invalid, 1 Unknown, 0 Unchecked, 39.5s Time] [2021-11-23 03:38:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13353 states. [2021-11-23 03:38:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13353 to 13199. [2021-11-23 03:38:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13199 states, 7744 states have (on average 1.28176652892562) internal successors, (9926), 7923 states have internal predecessors, (9926), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1013 states have return successors, (4953), 4362 states have call predecessors, (4953), 4425 states have call successors, (4953) [2021-11-23 03:38:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13199 states to 13199 states and 19306 transitions. [2021-11-23 03:38:09,311 INFO L78 Accepts]: Start accepts. Automaton has 13199 states and 19306 transitions. Word has length 111 [2021-11-23 03:38:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:09,312 INFO L470 AbstractCegarLoop]: Abstraction has 13199 states and 19306 transitions. [2021-11-23 03:38:09,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:38:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13199 states and 19306 transitions. [2021-11-23 03:38:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 03:38:09,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:09,315 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:09,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 03:38:09,315 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:38:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1374885432, now seen corresponding path program 1 times [2021-11-23 03:38:09,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:09,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602503959] [2021-11-23 03:38:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:09,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:38:09,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:09,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602503959] [2021-11-23 03:38:09,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602503959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:09,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:09,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:38:09,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231164011] [2021-11-23 03:38:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:09,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:09,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:38:09,481 INFO L87 Difference]: Start difference. First operand 13199 states and 19306 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:38:16,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:18,501 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 03:38:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:18,645 INFO L93 Difference]: Finished difference Result 13199 states and 19306 transitions. [2021-11-23 03:38:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:38:18,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 111 [2021-11-23 03:38:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:18,683 INFO L225 Difference]: With dead ends: 13199 [2021-11-23 03:38:18,683 INFO L226 Difference]: Without dead ends: 13197 [2021-11-23 03:38:18,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:18,690 INFO L933 BasicCegarLoop]: 4543 mSDtfsCounter, 4991 mSDsluCounter, 5018 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4993 SdHoareTripleChecker+Valid, 9086 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:18,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4993 Valid, 9086 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:38:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13197 states. [2021-11-23 03:38:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13197 to 13197. [2021-11-23 03:38:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13197 states, 7743 states have (on average 1.2816737698566447) internal successors, (9924), 7921 states have internal predecessors, (9924), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1013 states have return successors, (4953), 4362 states have call predecessors, (4953), 4425 states have call successors, (4953) [2021-11-23 03:38:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13197 states to 13197 states and 19304 transitions. [2021-11-23 03:38:19,769 INFO L78 Accepts]: Start accepts. Automaton has 13197 states and 19304 transitions. Word has length 111 [2021-11-23 03:38:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:19,770 INFO L470 AbstractCegarLoop]: Abstraction has 13197 states and 19304 transitions. [2021-11-23 03:38:19,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:38:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13197 states and 19304 transitions. [2021-11-23 03:38:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 03:38:19,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:19,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:38:19,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 03:38:19,774 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:38:19,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1750598309, now seen corresponding path program 1 times [2021-11-23 03:38:19,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:19,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211927818] [2021-11-23 03:38:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:19,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:38:19,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211927818] [2021-11-23 03:38:19,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211927818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:19,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:19,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:38:19,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189986329] [2021-11-23 03:38:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:19,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:19,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:38:19,945 INFO L87 Difference]: Start difference. First operand 13197 states and 19304 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:38:23,139 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 03:38:28,778 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 03:38:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:28,919 INFO L93 Difference]: Finished difference Result 13197 states and 19304 transitions. [2021-11-23 03:38:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:38:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2021-11-23 03:38:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:28,956 INFO L225 Difference]: With dead ends: 13197 [2021-11-23 03:38:28,956 INFO L226 Difference]: Without dead ends: 13195 [2021-11-23 03:38:28,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:28,962 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 4984 mSDsluCounter, 5016 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 9083 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:28,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4990 Valid, 9083 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 03:38:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13195 states. [2021-11-23 03:38:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13195 to 13195. [2021-11-23 03:38:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 7742 states have (on average 1.2815809868251098) internal successors, (9922), 7919 states have internal predecessors, (9922), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1013 states have return successors, (4953), 4362 states have call predecessors, (4953), 4425 states have call successors, (4953) [2021-11-23 03:38:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 19302 transitions. [2021-11-23 03:38:29,929 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 19302 transitions. Word has length 116 [2021-11-23 03:38:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:29,930 INFO L470 AbstractCegarLoop]: Abstraction has 13195 states and 19302 transitions. [2021-11-23 03:38:29,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:38:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 19302 transitions. [2021-11-23 03:38:29,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-23 03:38:29,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:29,934 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:29,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 03:38:29,934 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:38:29,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash 620831974, now seen corresponding path program 1 times [2021-11-23 03:38:29,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:29,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76474169] [2021-11-23 03:38:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:29,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-23 03:38:30,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76474169] [2021-11-23 03:38:30,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76474169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:30,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:30,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:38:30,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944965199] [2021-11-23 03:38:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:30,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:38:30,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:38:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:30,263 INFO L87 Difference]: Start difference. First operand 13195 states and 19302 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:38:33,443 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 03:38:41,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:43,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:43,347 INFO L93 Difference]: Finished difference Result 13249 states and 19339 transitions. [2021-11-23 03:38:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:38:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2021-11-23 03:38:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:43,385 INFO L225 Difference]: With dead ends: 13249 [2021-11-23 03:38:43,385 INFO L226 Difference]: Without dead ends: 13247 [2021-11-23 03:38:43,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 03:38:43,391 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4919 mSDsluCounter, 10084 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4923 SdHoareTripleChecker+Valid, 13665 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:43,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4923 Valid, 13665 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1445 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-11-23 03:38:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2021-11-23 03:38:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 13245. [2021-11-23 03:38:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 7769 states have (on average 1.2800875273522976) internal successors, (9945), 7945 states have internal predecessors, (9945), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1033 states have return successors, (4957), 4366 states have call predecessors, (4957), 4429 states have call successors, (4957) [2021-11-23 03:38:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 19333 transitions. [2021-11-23 03:38:44,471 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 19333 transitions. Word has length 142 [2021-11-23 03:38:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:44,472 INFO L470 AbstractCegarLoop]: Abstraction has 13245 states and 19333 transitions. [2021-11-23 03:38:44,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:38:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 19333 transitions. [2021-11-23 03:38:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 03:38:44,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:44,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:38:44,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 03:38:44,477 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:38:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -460633987, now seen corresponding path program 1 times [2021-11-23 03:38:44,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:44,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82717399] [2021-11-23 03:38:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:44,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:38:44,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82717399] [2021-11-23 03:38:44,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82717399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:44,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:44,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:38:44,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51140101] [2021-11-23 03:38:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:44,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:44,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:38:44,629 INFO L87 Difference]: Start difference. First operand 13245 states and 19333 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:38:48,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:53,436 WARN L534 Checker$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 03:38:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:53,634 INFO L93 Difference]: Finished difference Result 13245 states and 19333 transitions. [2021-11-23 03:38:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:38:53,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 121 [2021-11-23 03:38:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:53,676 INFO L225 Difference]: With dead ends: 13245 [2021-11-23 03:38:53,676 INFO L226 Difference]: Without dead ends: 13243 [2021-11-23 03:38:53,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:53,684 INFO L933 BasicCegarLoop]: 4537 mSDtfsCounter, 4983 mSDsluCounter, 5013 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 9074 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:53,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 9074 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-23 03:38:53,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13243 states. [2021-11-23 03:38:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13243 to 13243. [2021-11-23 03:38:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 7768 states have (on average 1.279994850669413) internal successors, (9943), 7943 states have internal predecessors, (9943), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1033 states have return successors, (4957), 4366 states have call predecessors, (4957), 4429 states have call successors, (4957) [2021-11-23 03:38:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 19331 transitions. [2021-11-23 03:38:54,894 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 19331 transitions. Word has length 121 [2021-11-23 03:38:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:54,894 INFO L470 AbstractCegarLoop]: Abstraction has 13243 states and 19331 transitions. [2021-11-23 03:38:54,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:38:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 19331 transitions. [2021-11-23 03:38:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 03:38:54,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:54,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:54,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 03:38:54,900 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:38:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1963082776, now seen corresponding path program 1 times [2021-11-23 03:38:54,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:54,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510943871] [2021-11-23 03:38:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:54,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:38:55,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510943871] [2021-11-23 03:38:55,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510943871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:55,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:55,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:38:55,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678128553] [2021-11-23 03:38:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:55,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:55,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:38:55,063 INFO L87 Difference]: Start difference. First operand 13243 states and 19331 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 03:39:01,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:04,277 WARN L534 Checker$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 03:39:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:04,424 INFO L93 Difference]: Finished difference Result 13255 states and 19347 transitions. [2021-11-23 03:39:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:39:04,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 126 [2021-11-23 03:39:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:04,462 INFO L225 Difference]: With dead ends: 13255 [2021-11-23 03:39:04,462 INFO L226 Difference]: Without dead ends: 13253 [2021-11-23 03:39:04,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:04,467 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 4978 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 9100 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:04,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 9100 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 956 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:39:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13253 states. [2021-11-23 03:39:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13253 to 13241. [2021-11-23 03:39:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13241 states, 7767 states have (on average 1.2799021501223125) internal successors, (9941), 7941 states have internal predecessors, (9941), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1033 states have return successors, (4957), 4366 states have call predecessors, (4957), 4429 states have call successors, (4957) [2021-11-23 03:39:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13241 states to 13241 states and 19329 transitions. [2021-11-23 03:39:05,674 INFO L78 Accepts]: Start accepts. Automaton has 13241 states and 19329 transitions. Word has length 126 [2021-11-23 03:39:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:05,675 INFO L470 AbstractCegarLoop]: Abstraction has 13241 states and 19329 transitions. [2021-11-23 03:39:05,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 03:39:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13241 states and 19329 transitions. [2021-11-23 03:39:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 03:39:05,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:05,679 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 03:39:05,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 03:39:05,680 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:39:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1760131816, now seen corresponding path program 1 times [2021-11-23 03:39:05,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:05,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826250760] [2021-11-23 03:39:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:05,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:39:05,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826250760] [2021-11-23 03:39:05,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826250760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:05,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:05,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:39:05,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880817785] [2021-11-23 03:39:05,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:05,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:05,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:05,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:05,837 INFO L87 Difference]: Start difference. First operand 13241 states and 19329 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 03:39:09,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:17,555 WARN L534 Checker$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 03:39:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:17,780 INFO L93 Difference]: Finished difference Result 13383 states and 19484 transitions. [2021-11-23 03:39:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:39:17,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 131 [2021-11-23 03:39:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:17,819 INFO L225 Difference]: With dead ends: 13383 [2021-11-23 03:39:17,819 INFO L226 Difference]: Without dead ends: 13381 [2021-11-23 03:39:17,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:17,826 INFO L933 BasicCegarLoop]: 5744 mSDtfsCounter, 4900 mSDsluCounter, 11205 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 16003 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:17,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4904 Valid, 16003 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1431 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 03:39:17,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2021-11-23 03:39:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 13347. [2021-11-23 03:39:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13347 states, 7822 states have (on average 1.2779340322168244) internal successors, (9996), 7996 states have internal predecessors, (9996), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1050 states have return successors, (4991), 4400 states have call predecessors, (4991), 4463 states have call successors, (4991) [2021-11-23 03:39:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13347 states to 13347 states and 19452 transitions. [2021-11-23 03:39:18,956 INFO L78 Accepts]: Start accepts. Automaton has 13347 states and 19452 transitions. Word has length 131 [2021-11-23 03:39:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:18,956 INFO L470 AbstractCegarLoop]: Abstraction has 13347 states and 19452 transitions. [2021-11-23 03:39:18,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 03:39:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13347 states and 19452 transitions. [2021-11-23 03:39:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-23 03:39:18,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:18,960 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:18,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 03:39:18,960 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:39:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:18,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1369026716, now seen corresponding path program 1 times [2021-11-23 03:39:18,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:18,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140650248] [2021-11-23 03:39:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:18,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-23 03:39:19,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140650248] [2021-11-23 03:39:19,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140650248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:19,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:19,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:39:19,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832949661] [2021-11-23 03:39:19,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:19,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:39:19,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:39:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:19,137 INFO L87 Difference]: Start difference. First operand 13347 states and 19452 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-23 03:39:22,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:25,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:28,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:33,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:37,972 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 03:39:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:38,149 INFO L93 Difference]: Finished difference Result 13349 states and 19453 transitions. [2021-11-23 03:39:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:39:38,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 156 [2021-11-23 03:39:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:38,210 INFO L225 Difference]: With dead ends: 13349 [2021-11-23 03:39:38,210 INFO L226 Difference]: Without dead ends: 13347 [2021-11-23 03:39:38,220 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 03:39:38,220 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 51 mSDsluCounter, 15003 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18113 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:38,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 18113 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1919 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-23 03:39:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13347 states. [2021-11-23 03:39:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13347 to 13347. [2021-11-23 03:39:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13347 states, 7822 states have (on average 1.2774226540526719) internal successors, (9992), 7996 states have internal predecessors, (9992), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1050 states have return successors, (4991), 4400 states have call predecessors, (4991), 4463 states have call successors, (4991) [2021-11-23 03:39:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13347 states to 13347 states and 19448 transitions. [2021-11-23 03:39:39,381 INFO L78 Accepts]: Start accepts. Automaton has 13347 states and 19448 transitions. Word has length 156 [2021-11-23 03:39:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:39,382 INFO L470 AbstractCegarLoop]: Abstraction has 13347 states and 19448 transitions. [2021-11-23 03:39:39,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-23 03:39:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 13347 states and 19448 transitions. [2021-11-23 03:39:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-23 03:39:39,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:39,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:39:39,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 03:39:39,385 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:39:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash 187308572, now seen corresponding path program 1 times [2021-11-23 03:39:39,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:39,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009408519] [2021-11-23 03:39:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:39,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:39:39,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009408519] [2021-11-23 03:39:39,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009408519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:39,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:39,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:39:39,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751058192] [2021-11-23 03:39:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:39,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:39:39,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:39:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:39:39,554 INFO L87 Difference]: Start difference. First operand 13347 states and 19448 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:39:43,154 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 03:39:44,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:47,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:49,113 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 03:39:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:49,271 INFO L93 Difference]: Finished difference Result 13347 states and 19448 transitions. [2021-11-23 03:39:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:39:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 136 [2021-11-23 03:39:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:49,315 INFO L225 Difference]: With dead ends: 13347 [2021-11-23 03:39:49,315 INFO L226 Difference]: Without dead ends: 13345 [2021-11-23 03:39:49,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:49,322 INFO L933 BasicCegarLoop]: 4533 mSDtfsCounter, 4976 mSDsluCounter, 5009 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 9066 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:49,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4978 Valid, 9066 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 03:39:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13345 states. [2021-11-23 03:39:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13345 to 13345. [2021-11-23 03:39:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13345 states, 7821 states have (on average 1.2773302646720368) internal successors, (9990), 7994 states have internal predecessors, (9990), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1050 states have return successors, (4991), 4400 states have call predecessors, (4991), 4463 states have call successors, (4991) [2021-11-23 03:39:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13345 states to 13345 states and 19446 transitions. [2021-11-23 03:39:50,458 INFO L78 Accepts]: Start accepts. Automaton has 13345 states and 19446 transitions. Word has length 136 [2021-11-23 03:39:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:50,458 INFO L470 AbstractCegarLoop]: Abstraction has 13345 states and 19446 transitions. [2021-11-23 03:39:50,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:39:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 13345 states and 19446 transitions. [2021-11-23 03:39:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 03:39:50,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:50,462 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 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 03:39:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 03:39:50,462 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:39:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 663784005, now seen corresponding path program 1 times [2021-11-23 03:39:50,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:50,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534531517] [2021-11-23 03:39:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:50,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-23 03:39:50,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:50,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534531517] [2021-11-23 03:39:50,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534531517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:50,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:39:50,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:39:50,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577496612] [2021-11-23 03:39:50,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:50,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:39:50,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:39:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:39:50,660 INFO L87 Difference]: Start difference. First operand 13345 states and 19446 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:39:54,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:56,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:59,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:00,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:01,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:06,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:09,035 WARN L534 Checker$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 03:40:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:09,214 INFO L93 Difference]: Finished difference Result 13345 states and 19446 transitions. [2021-11-23 03:40:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:40:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 144 [2021-11-23 03:40:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:09,254 INFO L225 Difference]: With dead ends: 13345 [2021-11-23 03:40:09,254 INFO L226 Difference]: Without dead ends: 13343 [2021-11-23 03:40:09,260 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 03:40:09,261 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 43 mSDsluCounter, 14966 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18078 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:09,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 18078 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1905 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2021-11-23 03:40:09,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13343 states. [2021-11-23 03:40:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13343 to 13343. [2021-11-23 03:40:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13343 states, 7820 states have (on average 1.276854219948849) internal successors, (9985), 7992 states have internal predecessors, (9985), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1050 states have return successors, (4991), 4400 states have call predecessors, (4991), 4463 states have call successors, (4991) [2021-11-23 03:40:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 19441 transitions. [2021-11-23 03:40:10,400 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 19441 transitions. Word has length 144 [2021-11-23 03:40:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:10,400 INFO L470 AbstractCegarLoop]: Abstraction has 13343 states and 19441 transitions. [2021-11-23 03:40:10,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:40:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 19441 transitions. [2021-11-23 03:40:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 03:40:10,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:10,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:40:10,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 03:40:10,404 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:40:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 622577610, now seen corresponding path program 1 times [2021-11-23 03:40:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273670289] [2021-11-23 03:40:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:10,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:40:10,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:10,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273670289] [2021-11-23 03:40:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273670289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:10,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:40:10,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123406291] [2021-11-23 03:40:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:40:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:40:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:40:10,568 INFO L87 Difference]: Start difference. First operand 13343 states and 19441 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:40:15,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:18,704 WARN L534 Checker$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 03:40:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:18,858 INFO L93 Difference]: Finished difference Result 13343 states and 19441 transitions. [2021-11-23 03:40:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:40:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 141 [2021-11-23 03:40:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:18,903 INFO L225 Difference]: With dead ends: 13343 [2021-11-23 03:40:18,903 INFO L226 Difference]: Without dead ends: 13341 [2021-11-23 03:40:18,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:40:18,911 INFO L933 BasicCegarLoop]: 4529 mSDtfsCounter, 4970 mSDsluCounter, 5005 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 9059 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:18,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4974 Valid, 9059 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 03:40:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2021-11-23 03:40:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 13341. [2021-11-23 03:40:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13341 states, 7819 states have (on average 1.2767617342371147) internal successors, (9983), 7990 states have internal predecessors, (9983), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1050 states have return successors, (4991), 4400 states have call predecessors, (4991), 4463 states have call successors, (4991) [2021-11-23 03:40:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13341 states to 13341 states and 19439 transitions. [2021-11-23 03:40:20,055 INFO L78 Accepts]: Start accepts. Automaton has 13341 states and 19439 transitions. Word has length 141 [2021-11-23 03:40:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:20,056 INFO L470 AbstractCegarLoop]: Abstraction has 13341 states and 19439 transitions. [2021-11-23 03:40:20,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:40:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 13341 states and 19439 transitions. [2021-11-23 03:40:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 03:40:20,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:20,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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 03:40:20,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 03:40:20,060 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:40:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash -305836024, now seen corresponding path program 1 times [2021-11-23 03:40:20,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:20,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214124910] [2021-11-23 03:40:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:20,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:40:20,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214124910] [2021-11-23 03:40:20,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214124910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:20,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:20,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:40:20,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527740136] [2021-11-23 03:40:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:20,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:40:20,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:40:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:40:20,227 INFO L87 Difference]: Start difference. First operand 13341 states and 19439 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:40:23,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:26,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:27,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:31,263 WARN L534 Checker$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 03:40:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:31,441 INFO L93 Difference]: Finished difference Result 13341 states and 19439 transitions. [2021-11-23 03:40:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:40:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 146 [2021-11-23 03:40:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:31,493 INFO L225 Difference]: With dead ends: 13341 [2021-11-23 03:40:31,493 INFO L226 Difference]: Without dead ends: 13209 [2021-11-23 03:40:31,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:40:31,507 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4967 mSDsluCounter, 5005 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 9057 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:31,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 9057 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-11-23 03:40:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13209 states. [2021-11-23 03:40:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13209 to 13209. [2021-11-23 03:40:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13209 states, 7752 states have (on average 1.278250773993808) internal successors, (9909), 7918 states have internal predecessors, (9909), 4421 states have call successors, (4421), 1043 states have call predecessors, (4421), 1030 states have return successors, (4947), 4360 states have call predecessors, (4947), 4419 states have call successors, (4947) [2021-11-23 03:40:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13209 states to 13209 states and 19277 transitions. [2021-11-23 03:40:32,917 INFO L78 Accepts]: Start accepts. Automaton has 13209 states and 19277 transitions. Word has length 146 [2021-11-23 03:40:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 13209 states and 19277 transitions. [2021-11-23 03:40:32,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 03:40:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 13209 states and 19277 transitions. [2021-11-23 03:40:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 03:40:32,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:32,923 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:40:32,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 03:40:32,923 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:40:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2089309041, now seen corresponding path program 1 times [2021-11-23 03:40:32,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:32,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221344915] [2021-11-23 03:40:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:32,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:40:33,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:33,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221344915] [2021-11-23 03:40:33,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221344915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:33,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:33,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:40:33,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74265747] [2021-11-23 03:40:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:33,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:40:33,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:40:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:40:33,202 INFO L87 Difference]: Start difference. First operand 13209 states and 19277 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:40:35,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:37,802 WARN L534 Checker$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 03:40:40,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:42,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:46,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:48,381 WARN L534 Checker$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 03:40:50,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:40:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:50,564 INFO L93 Difference]: Finished difference Result 14439 states and 20804 transitions. [2021-11-23 03:40:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:40:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 206 [2021-11-23 03:40:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:50,604 INFO L225 Difference]: With dead ends: 14439 [2021-11-23 03:40:50,605 INFO L226 Difference]: Without dead ends: 14437 [2021-11-23 03:40:50,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 03:40:50,615 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 4764 mSDsluCounter, 11201 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4769 SdHoareTripleChecker+Valid, 14871 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:50,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4769 Valid, 14871 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1540 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-11-23 03:40:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14437 states. [2021-11-23 03:40:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14437 to 14433. [2021-11-23 03:40:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14433 states, 8452 states have (on average 1.2712967345007098) internal successors, (10745), 8624 states have internal predecessors, (10745), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1216 states have return successors, (5293), 4692 states have call predecessors, (5293), 4757 states have call successors, (5293) [2021-11-23 03:40:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14433 states to 14433 states and 20797 transitions. [2021-11-23 03:40:51,937 INFO L78 Accepts]: Start accepts. Automaton has 14433 states and 20797 transitions. Word has length 206 [2021-11-23 03:40:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:51,938 INFO L470 AbstractCegarLoop]: Abstraction has 14433 states and 20797 transitions. [2021-11-23 03:40:51,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:40:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14433 states and 20797 transitions. [2021-11-23 03:40:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-23 03:40:51,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:51,944 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-23 03:40:51,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 03:40:51,944 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:40:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1423943433, now seen corresponding path program 1 times [2021-11-23 03:40:51,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072788113] [2021-11-23 03:40:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:51,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-23 03:40:52,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:52,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072788113] [2021-11-23 03:40:52,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072788113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:52,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:40:52,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:40:52,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508741202] [2021-11-23 03:40:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:52,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:40:52,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:40:52,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:40:52,134 INFO L87 Difference]: Start difference. First operand 14433 states and 20797 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:41:01,952 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 03:41:04,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:06,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:08,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:10,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:11,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:11,819 INFO L93 Difference]: Finished difference Result 28321 states and 40867 transitions. [2021-11-23 03:41:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:41:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 208 [2021-11-23 03:41:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:11,874 INFO L225 Difference]: With dead ends: 28321 [2021-11-23 03:41:11,874 INFO L226 Difference]: Without dead ends: 14457 [2021-11-23 03:41:11,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:41:11,935 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 3 mSDsluCounter, 19923 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22550 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:11,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22550 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2379 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2021-11-23 03:41:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14457 states. [2021-11-23 03:41:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14457 to 14457. [2021-11-23 03:41:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 8468 states have (on average 1.2707841284837034) internal successors, (10761), 8644 states have internal predecessors, (10761), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1224 states have return successors, (5329), 4696 states have call predecessors, (5329), 4757 states have call successors, (5329) [2021-11-23 03:41:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20849 transitions. [2021-11-23 03:41:13,282 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20849 transitions. Word has length 208 [2021-11-23 03:41:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:13,283 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 20849 transitions. [2021-11-23 03:41:13,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:41:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20849 transitions. [2021-11-23 03:41:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-23 03:41:13,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:13,293 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:13,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 03:41:13,294 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:41:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash 178975556, now seen corresponding path program 1 times [2021-11-23 03:41:13,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:13,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468417476] [2021-11-23 03:41:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:13,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-23 03:41:13,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:13,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468417476] [2021-11-23 03:41:13,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468417476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:13,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:13,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:41:13,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487500755] [2021-11-23 03:41:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:13,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:41:13,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:41:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:41:13,500 INFO L87 Difference]: Start difference. First operand 14457 states and 20849 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:41:21,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:26,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:28,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:30,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:32,960 WARN L534 Checker$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 03:41:35,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:35,204 INFO L93 Difference]: Finished difference Result 28361 states and 40939 transitions. [2021-11-23 03:41:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:41:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 213 [2021-11-23 03:41:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:35,262 INFO L225 Difference]: With dead ends: 28361 [2021-11-23 03:41:35,262 INFO L226 Difference]: Without dead ends: 14473 [2021-11-23 03:41:35,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:41:35,315 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 3 mSDsluCounter, 19926 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22548 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:35,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22548 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2385 Invalid, 4 Unknown, 0 Unchecked, 20.3s Time] [2021-11-23 03:41:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14473 states. [2021-11-23 03:41:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14473 to 14473. [2021-11-23 03:41:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14473 states, 8480 states have (on average 1.2704009433962264) internal successors, (10773), 8656 states have internal predecessors, (10773), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1228 states have return successors, (5337), 4700 states have call predecessors, (5337), 4757 states have call successors, (5337) [2021-11-23 03:41:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14473 states to 14473 states and 20869 transitions. [2021-11-23 03:41:36,747 INFO L78 Accepts]: Start accepts. Automaton has 14473 states and 20869 transitions. Word has length 213 [2021-11-23 03:41:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:36,748 INFO L470 AbstractCegarLoop]: Abstraction has 14473 states and 20869 transitions. [2021-11-23 03:41:36,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:41:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 14473 states and 20869 transitions. [2021-11-23 03:41:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-23 03:41:36,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:36,761 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 03:41:36,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 03:41:36,761 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:41:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash 325837701, now seen corresponding path program 1 times [2021-11-23 03:41:36,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:36,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506488215] [2021-11-23 03:41:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:36,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:41:37,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506488215] [2021-11-23 03:41:37,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506488215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:37,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:37,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:41:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604916984] [2021-11-23 03:41:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:41:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:41:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:41:37,080 INFO L87 Difference]: Start difference. First operand 14473 states and 20869 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-23 03:41:41,076 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 03:41:43,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:41:51,882 WARN L534 Checker$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 03:41:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:52,183 INFO L93 Difference]: Finished difference Result 29257 states and 42443 transitions. [2021-11-23 03:41:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:41:52,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 218 [2021-11-23 03:41:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:52,236 INFO L225 Difference]: With dead ends: 29257 [2021-11-23 03:41:52,236 INFO L226 Difference]: Without dead ends: 15353 [2021-11-23 03:41:52,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:41:52,417 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 417 mSDsluCounter, 9709 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 163 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 13407 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:52,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 13407 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1595 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2021-11-23 03:41:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15353 states. [2021-11-23 03:41:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15353 to 14721. [2021-11-23 03:41:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 8716 states have (on average 1.268127581459385) internal successors, (11053), 8896 states have internal predecessors, (11053), 4767 states have call successors, (4767), 1233 states have call predecessors, (4767), 1232 states have return successors, (5357), 4708 states have call predecessors, (5357), 4765 states have call successors, (5357) [2021-11-23 03:41:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 21177 transitions. [2021-11-23 03:41:53,811 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 21177 transitions. Word has length 218 [2021-11-23 03:41:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:53,811 INFO L470 AbstractCegarLoop]: Abstraction has 14721 states and 21177 transitions. [2021-11-23 03:41:53,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-23 03:41:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 21177 transitions. [2021-11-23 03:41:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 03:41:53,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:53,819 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:53,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 03:41:53,819 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:41:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1189684244, now seen corresponding path program 1 times [2021-11-23 03:41:53,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:53,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712050983] [2021-11-23 03:41:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:53,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:41:54,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:54,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712050983] [2021-11-23 03:41:54,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712050983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:54,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:41:54,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:41:54,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313136055] [2021-11-23 03:41:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:54,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:41:54,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:41:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:41:54,124 INFO L87 Difference]: Start difference. First operand 14721 states and 21177 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-23 03:42:01,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:04,129 WARN L534 Checker$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 03:42:11,988 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 03:42:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:12,144 INFO L93 Difference]: Finished difference Result 14735 states and 21188 transitions. [2021-11-23 03:42:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:42:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 206 [2021-11-23 03:42:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:12,187 INFO L225 Difference]: With dead ends: 14735 [2021-11-23 03:42:12,187 INFO L226 Difference]: Without dead ends: 14733 [2021-11-23 03:42:12,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:42:12,193 INFO L933 BasicCegarLoop]: 5048 mSDtfsCounter, 814 mSDsluCounter, 16041 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 19512 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:12,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 19512 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2153 Invalid, 2 Unknown, 0 Unchecked, 16.5s Time] [2021-11-23 03:42:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14733 states. [2021-11-23 03:42:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14733 to 14729. [2021-11-23 03:42:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14729 states, 8722 states have (on average 1.2677138271038753) internal successors, (11057), 8902 states have internal predecessors, (11057), 4767 states have call successors, (4767), 1235 states have call predecessors, (4767), 1234 states have return successors, (5357), 4708 states have call predecessors, (5357), 4765 states have call successors, (5357) [2021-11-23 03:42:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14729 states to 14729 states and 21181 transitions. [2021-11-23 03:42:13,645 INFO L78 Accepts]: Start accepts. Automaton has 14729 states and 21181 transitions. Word has length 206 [2021-11-23 03:42:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:13,646 INFO L470 AbstractCegarLoop]: Abstraction has 14729 states and 21181 transitions. [2021-11-23 03:42:13,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-23 03:42:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14729 states and 21181 transitions. [2021-11-23 03:42:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-23 03:42:13,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:13,653 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 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, 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 03:42:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 03:42:13,654 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:42:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash -211077257, now seen corresponding path program 1 times [2021-11-23 03:42:13,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:13,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844260601] [2021-11-23 03:42:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:13,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-23 03:42:13,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844260601] [2021-11-23 03:42:13,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844260601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:13,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:13,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:42:13,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622103158] [2021-11-23 03:42:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:13,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:42:13,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:42:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:42:13,987 INFO L87 Difference]: Start difference. First operand 14729 states and 21181 transitions. Second operand has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:42:21,187 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 03:42:23,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:25,506 WARN L534 Checker$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 03:42:31,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:40,852 WARN L534 Checker$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 03:42:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:41,034 INFO L93 Difference]: Finished difference Result 29501 states and 42526 transitions. [2021-11-23 03:42:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:42:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) Word has length 202 [2021-11-23 03:42:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:41,234 INFO L225 Difference]: With dead ends: 29501 [2021-11-23 03:42:41,234 INFO L226 Difference]: Without dead ends: 14791 [2021-11-23 03:42:41,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:42:41,272 INFO L933 BasicCegarLoop]: 4521 mSDtfsCounter, 7 mSDsluCounter, 39913 mSDsCounter, 0 mSdLazyCounter, 4288 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40675 SdHoareTripleChecker+Invalid, 4294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4288 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:41,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 40675 Invalid, 4294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4288 Invalid, 4 Unknown, 0 Unchecked, 25.3s Time] [2021-11-23 03:42:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14791 states. [2021-11-23 03:42:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14791 to 14755. [2021-11-23 03:42:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14755 states, 8740 states have (on average 1.267162471395881) internal successors, (11075), 8918 states have internal predecessors, (11075), 4769 states have call successors, (4769), 1235 states have call predecessors, (4769), 1240 states have return successors, (5413), 4718 states have call predecessors, (5413), 4767 states have call successors, (5413) [2021-11-23 03:42:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14755 states to 14755 states and 21257 transitions. [2021-11-23 03:42:42,604 INFO L78 Accepts]: Start accepts. Automaton has 14755 states and 21257 transitions. Word has length 202 [2021-11-23 03:42:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:42,604 INFO L470 AbstractCegarLoop]: Abstraction has 14755 states and 21257 transitions. [2021-11-23 03:42:42,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:42:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 14755 states and 21257 transitions. [2021-11-23 03:42:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-23 03:42:42,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:42,613 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:42,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 03:42:42,613 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:42:42,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -24109927, now seen corresponding path program 1 times [2021-11-23 03:42:42,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:42,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145555204] [2021-11-23 03:42:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:42,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:42:42,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:42,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145555204] [2021-11-23 03:42:42,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145555204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:42,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:42,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68029650] [2021-11-23 03:42:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:42,882 INFO L87 Difference]: Start difference. First operand 14755 states and 21257 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:42:47,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:51,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:53,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:55,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:00,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:01,384 WARN L534 Checker$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 03:43:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:01,494 INFO L93 Difference]: Finished difference Result 14895 states and 21385 transitions. [2021-11-23 03:43:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:43:01,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 217 [2021-11-23 03:43:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:01,536 INFO L225 Difference]: With dead ends: 14895 [2021-11-23 03:43:01,537 INFO L226 Difference]: Without dead ends: 14893 [2021-11-23 03:43:01,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 03:43:01,542 INFO L933 BasicCegarLoop]: 4520 mSDtfsCounter, 4636 mSDsluCounter, 10266 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 13802 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:01,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4643 Valid, 13802 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1473 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2021-11-23 03:43:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14893 states. [2021-11-23 03:43:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14893 to 14891. [2021-11-23 03:43:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14891 states, 8826 states have (on average 1.2670518921368683) internal successors, (11183), 9010 states have internal predecessors, (11183), 4775 states have call successors, (4775), 1279 states have call predecessors, (4775), 1284 states have return successors, (5419), 4724 states have call predecessors, (5419), 4773 states have call successors, (5419) [2021-11-23 03:43:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14891 states to 14891 states and 21377 transitions. [2021-11-23 03:43:02,894 INFO L78 Accepts]: Start accepts. Automaton has 14891 states and 21377 transitions. Word has length 217 [2021-11-23 03:43:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:02,894 INFO L470 AbstractCegarLoop]: Abstraction has 14891 states and 21377 transitions. [2021-11-23 03:43:02,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 03:43:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 14891 states and 21377 transitions. [2021-11-23 03:43:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-23 03:43:02,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:02,904 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 03:43:02,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 03:43:02,905 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:43:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -3274914, now seen corresponding path program 1 times [2021-11-23 03:43:02,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13609848] [2021-11-23 03:43:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:02,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:43:03,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13609848] [2021-11-23 03:43:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13609848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:03,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:03,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:03,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925681573] [2021-11-23 03:43:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:03,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:03,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:03,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:03,068 INFO L87 Difference]: Start difference. First operand 14891 states and 21377 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:43:08,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:13,072 WARN L534 Checker$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 03:43:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:13,226 INFO L93 Difference]: Finished difference Result 29313 states and 42172 transitions. [2021-11-23 03:43:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:13,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 215 [2021-11-23 03:43:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:13,274 INFO L225 Difference]: With dead ends: 29313 [2021-11-23 03:43:13,274 INFO L226 Difference]: Without dead ends: 14991 [2021-11-23 03:43:13,310 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 03:43:13,311 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 25 mSDsluCounter, 4917 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8975 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:13,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8975 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 03:43:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14991 states. [2021-11-23 03:43:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14991 to 14895. [2021-11-23 03:43:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14895 states, 8830 states have (on average 1.2669309173272933) internal successors, (11187), 9014 states have internal predecessors, (11187), 4775 states have call successors, (4775), 1279 states have call predecessors, (4775), 1284 states have return successors, (5419), 4724 states have call predecessors, (5419), 4773 states have call successors, (5419) [2021-11-23 03:43:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14895 states to 14895 states and 21381 transitions. [2021-11-23 03:43:14,900 INFO L78 Accepts]: Start accepts. Automaton has 14895 states and 21381 transitions. Word has length 215 [2021-11-23 03:43:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:14,900 INFO L470 AbstractCegarLoop]: Abstraction has 14895 states and 21381 transitions. [2021-11-23 03:43:14,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:43:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 14895 states and 21381 transitions. [2021-11-23 03:43:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-23 03:43:14,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:14,912 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 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 03:43:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 03:43:14,912 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:43:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 614021298, now seen corresponding path program 1 times [2021-11-23 03:43:14,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:14,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483764988] [2021-11-23 03:43:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:14,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-23 03:43:15,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:15,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483764988] [2021-11-23 03:43:15,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483764988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:15,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:15,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:43:15,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907243704] [2021-11-23 03:43:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:15,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:43:15,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:43:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:43:15,166 INFO L87 Difference]: Start difference. First operand 14895 states and 21381 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-23 03:43:20,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:22,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:25,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:30,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:35,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:38,292 WARN L534 Checker$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 03:43:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:38,645 INFO L93 Difference]: Finished difference Result 29261 states and 42093 transitions. [2021-11-23 03:43:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:43:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) Word has length 250 [2021-11-23 03:43:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:38,700 INFO L225 Difference]: With dead ends: 29261 [2021-11-23 03:43:38,701 INFO L226 Difference]: Without dead ends: 14935 [2021-11-23 03:43:38,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:43:38,736 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 22 mSDsluCounter, 19884 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22519 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:38,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22519 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2371 Invalid, 5 Unknown, 0 Unchecked, 21.8s Time] [2021-11-23 03:43:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14935 states. [2021-11-23 03:43:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14935 to 14927. [2021-11-23 03:43:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14927 states, 8850 states have (on average 1.2663276836158193) internal successors, (11207), 9034 states have internal predecessors, (11207), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1288 states have return successors, (5483), 4736 states have call predecessors, (5483), 4781 states have call successors, (5483) [2021-11-23 03:43:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 21473 transitions. [2021-11-23 03:43:40,138 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 21473 transitions. Word has length 250 [2021-11-23 03:43:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:40,138 INFO L470 AbstractCegarLoop]: Abstraction has 14927 states and 21473 transitions. [2021-11-23 03:43:40,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-23 03:43:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 21473 transitions. [2021-11-23 03:43:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-23 03:43:40,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:40,146 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 03:43:40,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 03:43:40,146 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:43:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash -106469557, now seen corresponding path program 1 times [2021-11-23 03:43:40,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:40,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852299952] [2021-11-23 03:43:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:40,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:43:40,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:40,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852299952] [2021-11-23 03:43:40,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852299952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:40,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:40,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:43:40,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961423742] [2021-11-23 03:43:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:40,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:43:40,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:43:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:43:40,421 INFO L87 Difference]: Start difference. First operand 14927 states and 21473 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:43:48,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:50,424 WARN L534 Checker$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 03:43:52,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:54,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:01,445 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 03:44:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:01,710 INFO L93 Difference]: Finished difference Result 29275 states and 42276 transitions. [2021-11-23 03:44:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:44:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 216 [2021-11-23 03:44:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:01,772 INFO L225 Difference]: With dead ends: 29275 [2021-11-23 03:44:01,772 INFO L226 Difference]: Without dead ends: 14917 [2021-11-23 03:44:01,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:44:01,812 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4902 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4910 SdHoareTripleChecker+Valid, 15550 SdHoareTripleChecker+Invalid, 4360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4357 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:01,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4910 Valid, 15550 Invalid, 4360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4357 Invalid, 2 Unknown, 0 Unchecked, 19.6s Time] [2021-11-23 03:44:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14917 states. [2021-11-23 03:44:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14917 to 14917. [2021-11-23 03:44:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14917 states, 8841 states have (on average 1.2656939260264677) internal successors, (11190), 9024 states have internal predecessors, (11190), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1288 states have return successors, (5483), 4736 states have call predecessors, (5483), 4781 states have call successors, (5483) [2021-11-23 03:44:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14917 states to 14917 states and 21456 transitions. [2021-11-23 03:44:03,182 INFO L78 Accepts]: Start accepts. Automaton has 14917 states and 21456 transitions. Word has length 216 [2021-11-23 03:44:03,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:03,183 INFO L470 AbstractCegarLoop]: Abstraction has 14917 states and 21456 transitions. [2021-11-23 03:44:03,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:44:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 14917 states and 21456 transitions. [2021-11-23 03:44:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-23 03:44:03,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:03,189 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 03:44:03,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 03:44:03,190 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_check_alloc_nonatomicErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:44:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 994785048, now seen corresponding path program 1 times [2021-11-23 03:44:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:03,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486788982] [2021-11-23 03:44:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:03,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-23 03:44:03,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:03,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486788982] [2021-11-23 03:44:03,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486788982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:03,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:03,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:44:03,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138737860] [2021-11-23 03:44:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:03,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:44:03,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:44:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:44:03,421 INFO L87 Difference]: Start difference. First operand 14917 states and 21456 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:44:07,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:09,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:12,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:14,890 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 03:44:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:15,022 INFO L93 Difference]: Finished difference Result 14917 states and 21456 transitions. [2021-11-23 03:44:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:44:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 217 [2021-11-23 03:44:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:15,064 INFO L225 Difference]: With dead ends: 14917 [2021-11-23 03:44:15,064 INFO L226 Difference]: Without dead ends: 14915 [2021-11-23 03:44:15,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:15,070 INFO L933 BasicCegarLoop]: 4501 mSDtfsCounter, 4897 mSDsluCounter, 4974 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 9002 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:15,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 9002 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 950 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-23 03:44:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14915 states. [2021-11-23 03:44:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14915 to 14915. [2021-11-23 03:44:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14915 states, 8840 states have (on average 1.2652714932126696) internal successors, (11185), 9022 states have internal predecessors, (11185), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1288 states have return successors, (5483), 4736 states have call predecessors, (5483), 4781 states have call successors, (5483) [2021-11-23 03:44:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14915 states to 14915 states and 21451 transitions. [2021-11-23 03:44:16,477 INFO L78 Accepts]: Start accepts. Automaton has 14915 states and 21451 transitions. Word has length 217 [2021-11-23 03:44:16,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:16,478 INFO L470 AbstractCegarLoop]: Abstraction has 14915 states and 21451 transitions. [2021-11-23 03:44:16,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:44:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 14915 states and 21451 transitions. [2021-11-23 03:44:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 03:44:16,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:16,485 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:44:16,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 03:44:16,486 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:44:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash 197553320, now seen corresponding path program 1 times [2021-11-23 03:44:16,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:16,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481254558] [2021-11-23 03:44:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:16,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-23 03:44:16,722 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481254558] [2021-11-23 03:44:16,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481254558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:16,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:16,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:44:16,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739484611] [2021-11-23 03:44:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:16,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:44:16,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:44:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:44:16,723 INFO L87 Difference]: Start difference. First operand 14915 states and 21451 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:44:23,891 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 03:44:29,353 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 03:44:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:29,512 INFO L93 Difference]: Finished difference Result 29269 states and 42169 transitions. [2021-11-23 03:44:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:44:29,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 230 [2021-11-23 03:44:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:29,565 INFO L225 Difference]: With dead ends: 29269 [2021-11-23 03:44:29,565 INFO L226 Difference]: Without dead ends: 14923 [2021-11-23 03:44:29,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:44:29,609 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 1 mSDsluCounter, 19867 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22488 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:29,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 22488 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2390 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2021-11-23 03:44:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2021-11-23 03:44:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14923. [2021-11-23 03:44:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 8848 states have (on average 1.2650316455696202) internal successors, (11193), 9026 states have internal predecessors, (11193), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1288 states have return successors, (5483), 4740 states have call predecessors, (5483), 4781 states have call successors, (5483) [2021-11-23 03:44:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 21459 transitions. [2021-11-23 03:44:31,274 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 21459 transitions. Word has length 230 [2021-11-23 03:44:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:31,274 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 21459 transitions. [2021-11-23 03:44:31,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-23 03:44:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 21459 transitions. [2021-11-23 03:44:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-23 03:44:31,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:31,282 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:31,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 03:44:31,283 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:44:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 316820901, now seen corresponding path program 1 times [2021-11-23 03:44:31,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:31,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676632514] [2021-11-23 03:44:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:31,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-23 03:44:31,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676632514] [2021-11-23 03:44:31,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676632514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:31,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:31,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:44:31,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957104573] [2021-11-23 03:44:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:31,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:44:31,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:44:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:31,651 INFO L87 Difference]: Start difference. First operand 14923 states and 21459 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 03:44:35,291 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 03:44:39,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:41,592 WARN L534 Checker$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 03:44:46,479 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 03:44:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:46,622 INFO L93 Difference]: Finished difference Result 14925 states and 21460 transitions. [2021-11-23 03:44:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:44:46,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 229 [2021-11-23 03:44:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:46,664 INFO L225 Difference]: With dead ends: 14925 [2021-11-23 03:44:46,664 INFO L226 Difference]: Without dead ends: 14923 [2021-11-23 03:44:46,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:44:46,669 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 280 mSDsluCounter, 14672 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 17782 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:46,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 17782 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1890 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2021-11-23 03:44:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2021-11-23 03:44:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14923. [2021-11-23 03:44:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 8848 states have (on average 1.264353526220615) internal successors, (11187), 9026 states have internal predecessors, (11187), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1288 states have return successors, (5483), 4740 states have call predecessors, (5483), 4781 states have call successors, (5483) [2021-11-23 03:44:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 21453 transitions. [2021-11-23 03:44:48,029 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 21453 transitions. Word has length 229 [2021-11-23 03:44:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:48,030 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 21453 transitions. [2021-11-23 03:44:48,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 03:44:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 21453 transitions. [2021-11-23 03:44:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-23 03:44:48,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:48,038 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 4, 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] [2021-11-23 03:44:48,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 03:44:48,039 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-23 03:44:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1929168773, now seen corresponding path program 1 times [2021-11-23 03:44:48,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603253449] [2021-11-23 03:44:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:48,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-23 03:44:48,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:48,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603253449] [2021-11-23 03:44:48,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603253449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:44:48,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532552934] [2021-11-23 03:44:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:48,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:44:48,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:44:48,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:44:48,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6819ad-f05a-43fc-9384-5e07b7600b33/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:44:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:50,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 03:44:50,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:44:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-23 03:44:51,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:44:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-23 03:44:52,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532552934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:44:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1655438843] [2021-11-23 03:44:52,203 INFO L159 IcfgInterpreter]: Started Sifa with 151 locations of interest [2021-11-23 03:44:52,203 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:44:52,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:44:52,214 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:44:52,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:45:11,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:45:11,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9