./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.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_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/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_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/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_567c060c-0caa-4233-ac76-17c723d593ac/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 017a921c8c43c4a2a11daf67a2d7f6c852b9597686d5b2eb3df4edf6699bf55b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:07:04,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:07:04,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:07:04,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:07:04,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:07:04,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:07:04,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:07:04,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:07:04,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:07:04,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:07:04,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:07:04,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:07:04,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:07:04,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:07:04,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:07:04,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:07:04,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:07:04,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:07:04,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:07:04,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:07:04,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:07:04,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:07:04,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:07:04,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:07:04,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:07:04,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:07:04,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:07:04,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:07:04,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:07:04,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:07:04,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:07:04,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:07:04,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:07:04,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:07:04,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:07:04,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:07:04,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:07:04,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:07:04,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:07:04,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:07:04,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:07:04,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:07:04,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:07:04,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:07:04,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:07:04,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:07:04,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:07:04,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:07:04,337 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:07:04,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:07:04,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:07:04,338 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:07:04,338 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:07:04,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:07:04,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:07:04,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:07:04,339 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:07:04,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:07:04,340 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:07:04,340 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:07:04,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:07:04,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:07:04,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:07:04,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:07:04,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:07:04,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:07:04,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:07:04,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:07:04,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:07:04,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:07:04,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:07:04,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:04,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:07:04,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:07:04,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:07:04,345 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:07:04,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:07:04,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:07:04,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:07:04,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:07:04,346 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_567c060c-0caa-4233-ac76-17c723d593ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 017a921c8c43c4a2a11daf67a2d7f6c852b9597686d5b2eb3df4edf6699bf55b [2021-11-23 02:07:04,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:07:04,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:07:04,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:07:04,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:07:04,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:07:04,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i [2021-11-23 02:07:04,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/data/1985a0833/dc67809caf294f31925f3cebf3a40e22/FLAG3717f3b21 [2021-11-23 02:07:05,745 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:07:05,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i [2021-11-23 02:07:05,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/data/1985a0833/dc67809caf294f31925f3cebf3a40e22/FLAG3717f3b21 [2021-11-23 02:07:06,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/data/1985a0833/dc67809caf294f31925f3cebf3a40e22 [2021-11-23 02:07:06,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:07:06,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:07:06,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:06,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:07:06,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:07:06,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:06" (1/1) ... [2021-11-23 02:07:06,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647d1c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:06, skipping insertion in model container [2021-11-23 02:07:06,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:07:06" (1/1) ... [2021-11-23 02:07:06,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:07:06,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:07:12,511 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475253,475266] [2021-11-23 02:07:12,519 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475398,475411] [2021-11-23 02:07:12,520 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475544,475557] [2021-11-23 02:07:12,521 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475709,475722] [2021-11-23 02:07:12,521 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475867,475880] [2021-11-23 02:07:12,528 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476025,476038] [2021-11-23 02:07:12,529 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476183,476196] [2021-11-23 02:07:12,529 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476343,476356] [2021-11-23 02:07:12,530 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476502,476515] [2021-11-23 02:07:12,530 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476641,476654] [2021-11-23 02:07:12,531 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476783,476796] [2021-11-23 02:07:12,531 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476932,476945] [2021-11-23 02:07:12,534 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477071,477084] [2021-11-23 02:07:12,536 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477226,477239] [2021-11-23 02:07:12,537 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477386,477399] [2021-11-23 02:07:12,537 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477537,477550] [2021-11-23 02:07:12,538 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477688,477701] [2021-11-23 02:07:12,539 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477840,477853] [2021-11-23 02:07:12,539 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477989,478002] [2021-11-23 02:07:12,541 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478137,478150] [2021-11-23 02:07:12,541 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478294,478307] [2021-11-23 02:07:12,542 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478443,478456] [2021-11-23 02:07:12,542 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478599,478612] [2021-11-23 02:07:12,543 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478752,478765] [2021-11-23 02:07:12,544 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478898,478911] [2021-11-23 02:07:12,545 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479041,479054] [2021-11-23 02:07:12,545 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479193,479206] [2021-11-23 02:07:12,546 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479339,479352] [2021-11-23 02:07:12,547 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479484,479497] [2021-11-23 02:07:12,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479638,479651] [2021-11-23 02:07:12,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479789,479802] [2021-11-23 02:07:12,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479944,479957] [2021-11-23 02:07:12,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480096,480109] [2021-11-23 02:07:12,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480251,480264] [2021-11-23 02:07:12,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480415,480428] [2021-11-23 02:07:12,553 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480571,480584] [2021-11-23 02:07:12,553 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480735,480748] [2021-11-23 02:07:12,554 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480877,480890] [2021-11-23 02:07:12,554 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481035,481048] [2021-11-23 02:07:12,555 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481202,481215] [2021-11-23 02:07:12,572 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481361,481374] [2021-11-23 02:07:12,574 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481520,481533] [2021-11-23 02:07:12,575 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481669,481682] [2021-11-23 02:07:12,575 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481816,481829] [2021-11-23 02:07:12,576 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481955,481968] [2021-11-23 02:07:12,576 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482118,482131] [2021-11-23 02:07:12,577 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482284,482297] [2021-11-23 02:07:12,578 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482448,482461] [2021-11-23 02:07:12,579 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482613,482626] [2021-11-23 02:07:12,580 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482778,482791] [2021-11-23 02:07:12,581 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482944,482957] [2021-11-23 02:07:12,582 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483109,483122] [2021-11-23 02:07:12,582 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483276,483289] [2021-11-23 02:07:12,583 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483436,483449] [2021-11-23 02:07:12,583 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483598,483611] [2021-11-23 02:07:12,584 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483757,483770] [2021-11-23 02:07:12,585 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483903,483916] [2021-11-23 02:07:12,586 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484046,484059] [2021-11-23 02:07:12,586 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484190,484203] [2021-11-23 02:07:12,591 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484333,484346] [2021-11-23 02:07:12,592 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484477,484490] [2021-11-23 02:07:12,593 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484618,484631] [2021-11-23 02:07:12,594 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484756,484769] [2021-11-23 02:07:12,594 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484914,484927] [2021-11-23 02:07:12,596 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485073,485086] [2021-11-23 02:07:12,597 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485229,485242] [2021-11-23 02:07:12,597 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485378,485391] [2021-11-23 02:07:12,597 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485530,485543] [2021-11-23 02:07:12,598 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485681,485694] [2021-11-23 02:07:12,598 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485830,485843] [2021-11-23 02:07:12,599 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485982,485995] [2021-11-23 02:07:12,599 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486130,486143] [2021-11-23 02:07:12,600 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486283,486296] [2021-11-23 02:07:12,600 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486434,486447] [2021-11-23 02:07:12,601 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486584,486597] [2021-11-23 02:07:12,601 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486731,486744] [2021-11-23 02:07:12,601 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486882,486895] [2021-11-23 02:07:12,602 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487033,487046] [2021-11-23 02:07:12,602 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487181,487194] [2021-11-23 02:07:12,603 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487347,487360] [2021-11-23 02:07:12,603 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487516,487529] [2021-11-23 02:07:12,604 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487683,487696] [2021-11-23 02:07:12,604 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487851,487864] [2021-11-23 02:07:12,605 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488001,488014] [2021-11-23 02:07:12,606 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488148,488161] [2021-11-23 02:07:12,607 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488309,488322] [2021-11-23 02:07:12,607 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488479,488492] [2021-11-23 02:07:12,608 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488641,488654] [2021-11-23 02:07:12,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:12,663 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:07:13,234 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475253,475266] [2021-11-23 02:07:13,234 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475398,475411] [2021-11-23 02:07:13,235 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475544,475557] [2021-11-23 02:07:13,235 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475709,475722] [2021-11-23 02:07:13,236 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[475867,475880] [2021-11-23 02:07:13,236 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476025,476038] [2021-11-23 02:07:13,236 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476183,476196] [2021-11-23 02:07:13,237 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476343,476356] [2021-11-23 02:07:13,237 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476502,476515] [2021-11-23 02:07:13,238 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476641,476654] [2021-11-23 02:07:13,239 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476783,476796] [2021-11-23 02:07:13,239 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[476932,476945] [2021-11-23 02:07:13,240 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477071,477084] [2021-11-23 02:07:13,240 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477226,477239] [2021-11-23 02:07:13,241 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477386,477399] [2021-11-23 02:07:13,242 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477537,477550] [2021-11-23 02:07:13,242 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477688,477701] [2021-11-23 02:07:13,243 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477840,477853] [2021-11-23 02:07:13,243 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[477989,478002] [2021-11-23 02:07:13,244 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478137,478150] [2021-11-23 02:07:13,244 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478294,478307] [2021-11-23 02:07:13,244 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478443,478456] [2021-11-23 02:07:13,245 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478599,478612] [2021-11-23 02:07:13,246 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478752,478765] [2021-11-23 02:07:13,247 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[478898,478911] [2021-11-23 02:07:13,247 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479041,479054] [2021-11-23 02:07:13,248 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479193,479206] [2021-11-23 02:07:13,249 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479339,479352] [2021-11-23 02:07:13,249 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479484,479497] [2021-11-23 02:07:13,249 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479638,479651] [2021-11-23 02:07:13,250 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479789,479802] [2021-11-23 02:07:13,250 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[479944,479957] [2021-11-23 02:07:13,251 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480096,480109] [2021-11-23 02:07:13,252 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480251,480264] [2021-11-23 02:07:13,253 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480415,480428] [2021-11-23 02:07:13,253 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480571,480584] [2021-11-23 02:07:13,254 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480735,480748] [2021-11-23 02:07:13,255 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[480877,480890] [2021-11-23 02:07:13,255 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481035,481048] [2021-11-23 02:07:13,256 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481202,481215] [2021-11-23 02:07:13,257 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481361,481374] [2021-11-23 02:07:13,258 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481520,481533] [2021-11-23 02:07:13,258 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481669,481682] [2021-11-23 02:07:13,259 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481816,481829] [2021-11-23 02:07:13,259 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[481955,481968] [2021-11-23 02:07:13,260 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482118,482131] [2021-11-23 02:07:13,261 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482284,482297] [2021-11-23 02:07:13,262 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482448,482461] [2021-11-23 02:07:13,262 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482613,482626] [2021-11-23 02:07:13,263 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482778,482791] [2021-11-23 02:07:13,263 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[482944,482957] [2021-11-23 02:07:13,264 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483109,483122] [2021-11-23 02:07:13,264 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483276,483289] [2021-11-23 02:07:13,265 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483436,483449] [2021-11-23 02:07:13,266 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483598,483611] [2021-11-23 02:07:13,267 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483757,483770] [2021-11-23 02:07:13,272 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[483903,483916] [2021-11-23 02:07:13,273 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484046,484059] [2021-11-23 02:07:13,273 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484190,484203] [2021-11-23 02:07:13,274 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484333,484346] [2021-11-23 02:07:13,281 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484477,484490] [2021-11-23 02:07:13,282 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484618,484631] [2021-11-23 02:07:13,283 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484756,484769] [2021-11-23 02:07:13,283 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[484914,484927] [2021-11-23 02:07:13,284 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485073,485086] [2021-11-23 02:07:13,289 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485229,485242] [2021-11-23 02:07:13,290 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485378,485391] [2021-11-23 02:07:13,290 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485530,485543] [2021-11-23 02:07:13,290 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485681,485694] [2021-11-23 02:07:13,292 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485830,485843] [2021-11-23 02:07:13,292 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[485982,485995] [2021-11-23 02:07:13,294 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486130,486143] [2021-11-23 02:07:13,295 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486283,486296] [2021-11-23 02:07:13,295 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486434,486447] [2021-11-23 02:07:13,295 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486584,486597] [2021-11-23 02:07:13,296 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486731,486744] [2021-11-23 02:07:13,296 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[486882,486895] [2021-11-23 02:07:13,297 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487033,487046] [2021-11-23 02:07:13,297 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487181,487194] [2021-11-23 02:07:13,298 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487347,487360] [2021-11-23 02:07:13,299 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487516,487529] [2021-11-23 02:07:13,300 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487683,487696] [2021-11-23 02:07:13,301 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[487851,487864] [2021-11-23 02:07:13,301 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488001,488014] [2021-11-23 02:07:13,302 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488148,488161] [2021-11-23 02:07:13,302 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488309,488322] [2021-11-23 02:07:13,303 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488479,488492] [2021-11-23 02:07:13,303 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_567c060c-0caa-4233-ac76-17c723d593ac/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i[488641,488654] [2021-11-23 02:07:13,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:07:13,634 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:07:13,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13 WrapperNode [2021-11-23 02:07:13,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:07:13,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:13,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:07:13,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:07:13,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:13,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,183 INFO L137 Inliner]: procedures = 858, calls = 4033, calls flagged for inlining = 408, calls inlined = 286, statements flattened = 7206 [2021-11-23 02:07:14,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:07:14,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:07:14,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:07:14,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:07:14,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:07:14,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:07:14,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:07:14,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:07:14,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (1/1) ... [2021-11-23 02:07:14,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:07:14,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:14,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:07:14,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:07:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure bio_endio [2021-11-23 02:07:14,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_endio [2021-11-23 02:07:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2021-11-23 02:07:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2021-11-23 02:07:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure __disable_intr [2021-11-23 02:07:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __disable_intr [2021-11-23 02:07:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 02:07:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 02:07:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:07:14,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:07:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_cleanup_dma_queue [2021-11-23 02:07:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_cleanup_dma_queue [2021-11-23 02:07:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:07:14,690 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:07:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure queue_flag_set_unlocked [2021-11-23 02:07:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_flag_set_unlocked [2021-11-23 02:07:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:07:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:07:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dev_cleanup [2021-11-23 02:07:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dev_cleanup [2021-11-23 02:07:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_cram_write [2021-11-23 02:07:14,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_cram_write [2021-11-23 02:07:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:07:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:07:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure config_data_swab [2021-11-23 02:07:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure config_data_swab [2021-11-23 02:07:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-23 02:07:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-23 02:07:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_105 [2021-11-23 02:07:14,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_105 [2021-11-23 02:07:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_101 [2021-11-23 02:07:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_101 [2021-11-23 02:07:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_102 [2021-11-23 02:07:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_102 [2021-11-23 02:07:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_detach_dev [2021-11-23 02:07:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_detach_dev [2021-11-23 02:07:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-23 02:07:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-23 02:07:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:07:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:07:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:07:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:07:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:07:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:07:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_irq_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_irq_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:07:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:07:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_110 [2021-11-23 02:07:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_110 [2021-11-23 02:07:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 02:07:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 02:07:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:07:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 02:07:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 02:07:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:07:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:07:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-11-23 02:07:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-11-23 02:07:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:07:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:07:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:07:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:07:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:07:14,699 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:07:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 02:07:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 02:07:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2021-11-23 02:07:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2021-11-23 02:07:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:07:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 02:07:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 02:07:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 02:07:14,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 02:07:14,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:07:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_lock_of_NOT_ARG_SIGN [2021-11-23 02:07:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_lock_of_NOT_ARG_SIGN [2021-11-23 02:07:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:07:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:07:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:07:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2021-11-23 02:07:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2021-11-23 02:07:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 02:07:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 02:07:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 02:07:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 02:07:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:07:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:07:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-23 02:07:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure __issue_creg_rw [2021-11-23 02:07:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __issue_creg_rw [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:07:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-23 02:07:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_dev_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_dev_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:07:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:07:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:07:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:07:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_getgeo [2021-11-23 02:07:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_getgeo [2021-11-23 02:07:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-23 02:07:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-23 02:07:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_complete_dma [2021-11-23 02:07:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_complete_dma [2021-11-23 02:07:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:07:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:07:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:07:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:07:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_eeh_failure [2021-11-23 02:07:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_eeh_failure [2021-11-23 02:07:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure card_shutdown [2021-11-23 02:07:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure card_shutdown [2021-11-23 02:07:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-23 02:07:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-23 02:07:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_cram_read [2021-11-23 02:07:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_cram_read [2021-11-23 02:07:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 02:07:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 02:07:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:07:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:07:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:07:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure creg_cmd_timed_out [2021-11-23 02:07:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure creg_cmd_timed_out [2021-11-23 02:07:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 02:07:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 02:07:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:07:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-23 02:07:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-23 02:07:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure creg_kick_queue [2021-11-23 02:07:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure creg_kick_queue [2021-11-23 02:07:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:07:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:07:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:07:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:07:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dma_cleanup [2021-11-23 02:07:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dma_cleanup [2021-11-23 02:07:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:07:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:07:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:07:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:07:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_100 [2021-11-23 02:07:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_100 [2021-11-23 02:07:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:07:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:07:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 02:07:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 02:07:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 02:07:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 02:07:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 02:07:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 02:07:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_pci_shutdown [2021-11-23 02:07:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_pci_shutdown [2021-11-23 02:07:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure issue_creg_rw [2021-11-23 02:07:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_creg_rw [2021-11-23 02:07:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_card_state_to_str [2021-11-23 02:07:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_card_state_to_str [2021-11-23 02:07:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_disable_ier [2021-11-23 02:07:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_disable_ier [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:07:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:07:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2021-11-23 02:07:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_104 [2021-11-23 02:07:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_104 [2021-11-23 02:07:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_100 [2021-11-23 02:07:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_100 [2021-11-23 02:07:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:07:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:07:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_enable_ier_and_isr [2021-11-23 02:07:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_enable_ier_and_isr [2021-11-23 02:07:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:07:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:07:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_get_card_size8 [2021-11-23 02:07:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_get_card_size8 [2021-11-23 02:07:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-23 02:07:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-23 02:07:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-23 02:07:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-23 02:07:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_size [2021-11-23 02:07:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_size [2021-11-23 02:07:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure __enable_intr [2021-11-23 02:07:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __enable_intr [2021-11-23 02:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 02:07:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 02:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_queue_lock_of_rsxx_dma_ctrl [2021-11-23 02:07:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_queue_lock_of_rsxx_dma_ctrl [2021-11-23 02:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-23 02:07:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-23 02:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_98 [2021-11-23 02:07:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_98 [2021-11-23 02:07:14,829 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:07:14,829 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_99 [2021-11-23 02:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_99 [2021-11-23 02:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 02:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 02:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:07:14,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:07:14,830 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_hw_buffers_init [2021-11-23 02:07:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_hw_buffers_init [2021-11-23 02:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-23 02:07:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-23 02:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure config_data_crc32 [2021-11-23 02:07:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure config_data_crc32 [2021-11-23 02:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_attr_pci_regs_open [2021-11-23 02:07:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_attr_pci_regs_open [2021-11-23 02:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:07:14,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:07:14,831 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dma_configure [2021-11-23 02:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dma_configure [2021-11-23 02:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure creg_queue_cmd [2021-11-23 02:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure creg_queue_cmd [2021-11-23 02:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_free_dma [2021-11-23 02:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_free_dma [2021-11-23 02:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-23 02:07:14,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-23 02:07:14,832 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dma_cancel [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dma_cancel [2021-11-23 02:07:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 02:07:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-23 02:07:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_get_card_state [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_get_card_state [2021-11-23 02:07:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:07:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2021-11-23 02:07:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2021-11-23 02:07:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:07:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:07:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:07:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:07:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:07:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:07:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-23 02:07:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-23 02:07:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-23 02:07:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-23 02:07:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-23 02:07:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_issue_card_cmd [2021-11-23 02:07:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_issue_card_cmd [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 02:07:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 02:07:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 02:07:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 02:07:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:07:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:07:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure CR_INTR_DMA [2021-11-23 02:07:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure CR_INTR_DMA [2021-11-23 02:07:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure push_tracker [2021-11-23 02:07:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure push_tracker [2021-11-23 02:07:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:07:14,836 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:07:14,837 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:07:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_pci_probe [2021-11-23 02:07:14,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_pci_probe [2021-11-23 02:07:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:07:14,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:07:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:07:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2021-11-23 02:07:14,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2021-11-23 02:07:14,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-23 02:07:14,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-23 02:07:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 02:07:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 02:07:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:07:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:07:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:07:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:07:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure CREG_DATA [2021-11-23 02:07:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure CREG_DATA [2021-11-23 02:07:14,838 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 02:07:14,838 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 02:07:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:07:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:07:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_99 [2021-11-23 02:07:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_99 [2021-11-23 02:07:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 02:07:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 02:07:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_creg_write [2021-11-23 02:07:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_creg_write [2021-11-23 02:07:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-23 02:07:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-23 02:07:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure dma_intr_coal_val [2021-11-23 02:07:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_intr_coal_val [2021-11-23 02:07:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:07:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:07:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_pci_remove [2021-11-23 02:07:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_pci_remove [2021-11-23 02:07:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_96 [2021-11-23 02:07:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_96 [2021-11-23 02:07:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2021-11-23 02:07:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2021-11-23 02:07:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure read_hw_log_done [2021-11-23 02:07:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure read_hw_log_done [2021-11-23 02:07:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:07:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:07:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dma_destroy [2021-11-23 02:07:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dma_destroy [2021-11-23 02:07:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 02:07:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 02:07:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_dma_queue_reset [2021-11-23 02:07:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_dma_queue_reset [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_96___0 [2021-11-23 02:07:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_96___0 [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:07:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 02:07:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:07:14,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:07:14,842 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_creg_read [2021-11-23 02:07:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_creg_read [2021-11-23 02:07:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:07:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:07:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-23 02:07:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-23 02:07:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-23 02:07:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-23 02:07:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-23 02:07:14,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-23 02:07:14,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_irq_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_irq_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:07:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:07:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-23 02:07:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-23 02:07:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure dma_engine_stalled [2021-11-23 02:07:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_engine_stalled [2021-11-23 02:07:14,844 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 02:07:14,844 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_reg_access [2021-11-23 02:07:14,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_reg_access [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_attr_stats_open [2021-11-23 02:07:14,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_attr_stats_open [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:07:14,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:07:14,845 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:07:14,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_sched_completion__wait_without_init [2021-11-23 02:07:14,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_sched_completion__wait_without_init [2021-11-23 02:07:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 02:07:14,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 02:07:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_dev_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_dev_lock_of_rsxx_cardinfo [2021-11-23 02:07:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:07:14,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:07:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_97___0 [2021-11-23 02:07:14,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_97___0 [2021-11-23 02:07:14,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:07:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:07:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_109 [2021-11-23 02:07:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_109 [2021-11-23 02:07:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:07:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:07:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-23 02:07:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-23 02:07:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-23 02:07:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-23 02:07:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:07:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:07:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 02:07:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 02:07:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:07:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:07:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:07:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:07:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-23 02:07:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-23 02:07:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 02:07:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 02:07:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-23 02:07:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-23 02:07:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_blkdev_ioctl [2021-11-23 02:07:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_blkdev_ioctl [2021-11-23 02:07:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_disable_ier_and_isr [2021-11-23 02:07:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_disable_ier_and_isr [2021-11-23 02:07:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 02:07:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 02:07:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure get_tracker_dma [2021-11-23 02:07:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tracker_dma [2021-11-23 02:07:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:07:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:07:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_queue_lock_of_rsxx_dma_ctrl [2021-11-23 02:07:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_queue_lock_of_rsxx_dma_ctrl [2021-11-23 02:07:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_101 [2021-11-23 02:07:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_101 [2021-11-23 02:07:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure rsxx_read_hw_log [2021-11-23 02:07:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure rsxx_read_hw_log [2021-11-23 02:07:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:07:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:07:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:07:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:07:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 02:07:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 02:07:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:07:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:07:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:07:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:07:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2021-11-23 02:07:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2021-11-23 02:07:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:07:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:07:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:07:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:07:16,142 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:07:16,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:07:16,262 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:07:26,176 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:07:27,532 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:07:27,532 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:07:27,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:27 BoogieIcfgContainer [2021-11-23 02:07:27,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:07:27,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:07:27,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:07:27,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:07:27,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:07:06" (1/3) ... [2021-11-23 02:07:27,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967473e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:27, skipping insertion in model container [2021-11-23 02:07:27,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:07:13" (2/3) ... [2021-11-23 02:07:27,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6967473e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:07:27, skipping insertion in model container [2021-11-23 02:07:27,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:07:27" (3/3) ... [2021-11-23 02:07:27,554 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--rsxx--rsxx.ko.cil.i [2021-11-23 02:07:27,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:07:27,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2021-11-23 02:07:27,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:07:27,641 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 02:07:27,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2021-11-23 02:07:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 2244 states, 1260 states have (on average 1.2769841269841269) internal successors, (1609), 1342 states have internal predecessors, (1609), 741 states have call successors, (741), 204 states have call predecessors, (741), 203 states have return successors, (735), 726 states have call predecessors, (735), 735 states have call successors, (735) [2021-11-23 02:07:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:07:27,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:27,727 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] [2021-11-23 02:07:27,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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 37 more)] === [2021-11-23 02:07:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1369386417, now seen corresponding path program 1 times [2021-11-23 02:07:27,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:27,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845206918] [2021-11-23 02:07:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:27,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:28,461 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 02:07:28,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:28,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845206918] [2021-11-23 02:07:28,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845206918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:28,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:28,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:28,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134315690] [2021-11-23 02:07:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:28,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:28,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:28,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:28,506 INFO L87 Difference]: Start difference. First operand has 2244 states, 1260 states have (on average 1.2769841269841269) internal successors, (1609), 1342 states have internal predecessors, (1609), 741 states have call successors, (741), 204 states have call predecessors, (741), 203 states have return successors, (735), 726 states have call predecessors, (735), 735 states have call successors, (735) 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, (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 02:07:31,005 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 02:07:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:33,600 INFO L93 Difference]: Finished difference Result 4931 states and 6972 transitions. [2021-11-23 02:07:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:07:33,603 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, (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 52 [2021-11-23 02:07:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:33,650 INFO L225 Difference]: With dead ends: 4931 [2021-11-23 02:07:33,651 INFO L226 Difference]: Without dead ends: 2711 [2021-11-23 02:07:33,672 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 02:07:33,675 INFO L933 BasicCegarLoop]: 3017 mSDtfsCounter, 2916 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 6643 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:33,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2920 Valid, 6643 Invalid, 868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 867 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 02:07:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-11-23 02:07:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2701. [2021-11-23 02:07:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 1512 states have (on average 1.2394179894179893) internal successors, (1874), 1596 states have internal predecessors, (1874), 868 states have call successors, (868), 284 states have call predecessors, (868), 283 states have return successors, (866), 855 states have call predecessors, (866), 866 states have call successors, (866) [2021-11-23 02:07:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3608 transitions. [2021-11-23 02:07:33,962 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3608 transitions. Word has length 52 [2021-11-23 02:07:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:33,963 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 3608 transitions. [2021-11-23 02:07:33,963 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, (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 02:07:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3608 transitions. [2021-11-23 02:07:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:07:33,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:33,968 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] [2021-11-23 02:07:33,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:07:33,968 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 37 more)] === [2021-11-23 02:07:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1748395399, now seen corresponding path program 1 times [2021-11-23 02:07:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231796560] [2021-11-23 02:07:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:33,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:34,208 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 02:07:34,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:34,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231796560] [2021-11-23 02:07:34,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231796560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:34,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:34,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:34,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32412214] [2021-11-23 02:07:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:34,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:34,215 INFO L87 Difference]: Start difference. First operand 2701 states and 3608 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 02:07:36,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:40,575 INFO L93 Difference]: Finished difference Result 4805 states and 6460 transitions. [2021-11-23 02:07:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:07:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 57 [2021-11-23 02:07:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:40,617 INFO L225 Difference]: With dead ends: 4805 [2021-11-23 02:07:40,618 INFO L226 Difference]: Without dead ends: 4803 [2021-11-23 02:07:40,622 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 02:07:40,623 INFO L933 BasicCegarLoop]: 3703 mSDtfsCounter, 2869 mSDsluCounter, 7080 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 10023 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:40,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2873 Valid, 10023 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1192 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:07:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2021-11-23 02:07:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4607. [2021-11-23 02:07:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 2587 states have (on average 1.2404329339002707) internal successors, (3209), 2711 states have internal predecessors, (3209), 1520 states have call successors, (1520), 463 states have call predecessors, (1520), 462 states have return successors, (1527), 1495 states have call predecessors, (1527), 1518 states have call successors, (1527) [2021-11-23 02:07:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6256 transitions. [2021-11-23 02:07:41,075 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6256 transitions. Word has length 57 [2021-11-23 02:07:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:41,076 INFO L470 AbstractCegarLoop]: Abstraction has 4607 states and 6256 transitions. [2021-11-23 02:07:41,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 02:07:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6256 transitions. [2021-11-23 02:07:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:07:41,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:41,087 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] [2021-11-23 02:07:41,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:07:41,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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 37 more)] === [2021-11-23 02:07:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1511235315, now seen corresponding path program 1 times [2021-11-23 02:07:41,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:41,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113412162] [2021-11-23 02:07:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:41,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:41,318 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 02:07:41,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:41,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113412162] [2021-11-23 02:07:41,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113412162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:41,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:41,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:41,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700361360] [2021-11-23 02:07:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:41,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:41,321 INFO L87 Difference]: Start difference. First operand 4607 states and 6256 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 02:07:43,809 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 02:07:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:47,210 INFO L93 Difference]: Finished difference Result 8586 states and 11731 transitions. [2021-11-23 02:07:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:07:47,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 62 [2021-11-23 02:07:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:47,284 INFO L225 Difference]: With dead ends: 8586 [2021-11-23 02:07:47,284 INFO L226 Difference]: Without dead ends: 8584 [2021-11-23 02:07:47,290 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 02:07:47,291 INFO L933 BasicCegarLoop]: 3530 mSDtfsCounter, 2867 mSDsluCounter, 6862 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 9662 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:47,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2871 Valid, 9662 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 02:07:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8584 states. [2021-11-23 02:07:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8584 to 8393. [2021-11-23 02:07:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8393 states, 4721 states have (on average 1.2410506248676128) internal successors, (5859), 4925 states have internal predecessors, (5859), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:07:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8393 states to 8393 states and 11530 transitions. [2021-11-23 02:07:47,823 INFO L78 Accepts]: Start accepts. Automaton has 8393 states and 11530 transitions. Word has length 62 [2021-11-23 02:07:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:47,825 INFO L470 AbstractCegarLoop]: Abstraction has 8393 states and 11530 transitions. [2021-11-23 02:07:47,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 02:07:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8393 states and 11530 transitions. [2021-11-23 02:07:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:07:47,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:47,829 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] [2021-11-23 02:07:47,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:07:47,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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 37 more)] === [2021-11-23 02:07:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1714731494, now seen corresponding path program 1 times [2021-11-23 02:07:47,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:47,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716769869] [2021-11-23 02:07:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:47,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:48,098 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 02:07:48,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:48,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716769869] [2021-11-23 02:07:48,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716769869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:48,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:48,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:48,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297945099] [2021-11-23 02:07:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:48,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:48,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:48,101 INFO L87 Difference]: Start difference. First operand 8393 states and 11530 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 02:07:50,544 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 02:07:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:52,926 INFO L93 Difference]: Finished difference Result 8403 states and 11535 transitions. [2021-11-23 02:07:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:07:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 67 [2021-11-23 02:07:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:52,993 INFO L225 Difference]: With dead ends: 8403 [2021-11-23 02:07:52,993 INFO L226 Difference]: Without dead ends: 8401 [2021-11-23 02:07:52,998 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 02:07:53,003 INFO L933 BasicCegarLoop]: 2984 mSDtfsCounter, 2892 mSDsluCounter, 4065 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:53,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 6575 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:07:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2021-11-23 02:07:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8391. [2021-11-23 02:07:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8391 states, 4720 states have (on average 1.2408898305084746) internal successors, (5857), 4923 states have internal predecessors, (5857), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:07:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8391 states to 8391 states and 11528 transitions. [2021-11-23 02:07:53,486 INFO L78 Accepts]: Start accepts. Automaton has 8391 states and 11528 transitions. Word has length 67 [2021-11-23 02:07:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:53,487 INFO L470 AbstractCegarLoop]: Abstraction has 8391 states and 11528 transitions. [2021-11-23 02:07:53,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 02:07:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8391 states and 11528 transitions. [2021-11-23 02:07:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:07:53,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:53,490 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] [2021-11-23 02:07:53,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:07:53,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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 37 more)] === [2021-11-23 02:07:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -439912846, now seen corresponding path program 1 times [2021-11-23 02:07:53,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:53,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215055271] [2021-11-23 02:07:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:53,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:53,708 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 02:07:53,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215055271] [2021-11-23 02:07:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215055271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:53,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:53,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:53,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748980164] [2021-11-23 02:07:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:53,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:53,712 INFO L87 Difference]: Start difference. First operand 8391 states and 11528 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 02:07:56,139 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 02:07:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:58,416 INFO L93 Difference]: Finished difference Result 8401 states and 11533 transitions. [2021-11-23 02:07:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:07:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 72 [2021-11-23 02:07:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:58,487 INFO L225 Difference]: With dead ends: 8401 [2021-11-23 02:07:58,487 INFO L226 Difference]: Without dead ends: 8399 [2021-11-23 02:07:58,493 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 02:07:58,494 INFO L933 BasicCegarLoop]: 2973 mSDtfsCounter, 2889 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:58,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 6553 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:07:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2021-11-23 02:07:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8389. [2021-11-23 02:07:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8389 states, 4719 states have (on average 1.2407289680016953) internal successors, (5855), 4921 states have internal predecessors, (5855), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:07:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 11526 transitions. [2021-11-23 02:07:59,145 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 11526 transitions. Word has length 72 [2021-11-23 02:07:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:59,146 INFO L470 AbstractCegarLoop]: Abstraction has 8389 states and 11526 transitions. [2021-11-23 02:07:59,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 02:07:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 11526 transitions. [2021-11-23 02:07:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:07:59,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:59,150 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] [2021-11-23 02:07:59,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:07:59,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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 37 more)] === [2021-11-23 02:07:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:59,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1478953326, now seen corresponding path program 1 times [2021-11-23 02:07:59,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719846183] [2021-11-23 02:07:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:59,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:59,386 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 02:07:59,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719846183] [2021-11-23 02:07:59,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719846183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:59,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:59,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:59,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701934102] [2021-11-23 02:07:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:59,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:59,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:59,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:59,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:59,389 INFO L87 Difference]: Start difference. First operand 8389 states and 11526 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 02:08:01,866 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 02:08:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:04,270 INFO L93 Difference]: Finished difference Result 8399 states and 11531 transitions. [2021-11-23 02:08:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 77 [2021-11-23 02:08:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:04,328 INFO L225 Difference]: With dead ends: 8399 [2021-11-23 02:08:04,328 INFO L226 Difference]: Without dead ends: 8397 [2021-11-23 02:08:04,334 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 02:08:04,335 INFO L933 BasicCegarLoop]: 2971 mSDtfsCounter, 2886 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:04,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2890 Valid, 6549 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:08:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2021-11-23 02:08:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 8387. [2021-11-23 02:08:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8387 states, 4718 states have (on average 1.2405680373039423) internal successors, (5853), 4919 states have internal predecessors, (5853), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8387 states to 8387 states and 11524 transitions. [2021-11-23 02:08:04,896 INFO L78 Accepts]: Start accepts. Automaton has 8387 states and 11524 transitions. Word has length 77 [2021-11-23 02:08:04,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:04,897 INFO L470 AbstractCegarLoop]: Abstraction has 8387 states and 11524 transitions. [2021-11-23 02:08:04,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 02:08:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8387 states and 11524 transitions. [2021-11-23 02:08:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 02:08:04,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:04,899 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] [2021-11-23 02:08:04,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:08:04,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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 37 more)] === [2021-11-23 02:08:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash 211432539, now seen corresponding path program 1 times [2021-11-23 02:08:04,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:04,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495855492] [2021-11-23 02:08:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:04,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:05,184 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 02:08:05,184 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:05,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495855492] [2021-11-23 02:08:05,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495855492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:05,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:05,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:05,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194848076] [2021-11-23 02:08:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:05,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:05,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:05,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:05,188 INFO L87 Difference]: Start difference. First operand 8387 states and 11524 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:08:07,534 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 02:08:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:09,874 INFO L93 Difference]: Finished difference Result 8397 states and 11529 transitions. [2021-11-23 02:08:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 82 [2021-11-23 02:08:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:09,916 INFO L225 Difference]: With dead ends: 8397 [2021-11-23 02:08:09,916 INFO L226 Difference]: Without dead ends: 8395 [2021-11-23 02:08:09,923 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 02:08:09,923 INFO L933 BasicCegarLoop]: 2978 mSDtfsCounter, 2883 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:09,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2887 Valid, 6563 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:08:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2021-11-23 02:08:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 8385. [2021-11-23 02:08:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8385 states, 4717 states have (on average 1.2404070383718464) internal successors, (5851), 4917 states have internal predecessors, (5851), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8385 states to 8385 states and 11522 transitions. [2021-11-23 02:08:10,405 INFO L78 Accepts]: Start accepts. Automaton has 8385 states and 11522 transitions. Word has length 82 [2021-11-23 02:08:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:10,406 INFO L470 AbstractCegarLoop]: Abstraction has 8385 states and 11522 transitions. [2021-11-23 02:08:10,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 02:08:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8385 states and 11522 transitions. [2021-11-23 02:08:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:08:10,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:10,408 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] [2021-11-23 02:08:10,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:08:10,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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 37 more)] === [2021-11-23 02:08:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1195697668, now seen corresponding path program 1 times [2021-11-23 02:08:10,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:10,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256131541] [2021-11-23 02:08:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:10,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:10,591 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 02:08:10,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256131541] [2021-11-23 02:08:10,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256131541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:10,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:10,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:10,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066222530] [2021-11-23 02:08:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:10,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:10,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:10,595 INFO L87 Difference]: Start difference. First operand 8385 states and 11522 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 02:08:12,978 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 02:08:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:15,200 INFO L93 Difference]: Finished difference Result 8395 states and 11527 transitions. [2021-11-23 02:08:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:15,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 87 [2021-11-23 02:08:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:15,243 INFO L225 Difference]: With dead ends: 8395 [2021-11-23 02:08:15,243 INFO L226 Difference]: Without dead ends: 8393 [2021-11-23 02:08:15,250 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 02:08:15,250 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 2884 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:15,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2888 Valid, 6555 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 02:08:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8393 states. [2021-11-23 02:08:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8393 to 8383. [2021-11-23 02:08:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8383 states, 4716 states have (on average 1.2402459711620017) internal successors, (5849), 4915 states have internal predecessors, (5849), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8383 states to 8383 states and 11520 transitions. [2021-11-23 02:08:15,898 INFO L78 Accepts]: Start accepts. Automaton has 8383 states and 11520 transitions. Word has length 87 [2021-11-23 02:08:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:15,899 INFO L470 AbstractCegarLoop]: Abstraction has 8383 states and 11520 transitions. [2021-11-23 02:08:15,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 02:08:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8383 states and 11520 transitions. [2021-11-23 02:08:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 02:08:15,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:15,903 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] [2021-11-23 02:08:15,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:08:15,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 37 more)] === [2021-11-23 02:08:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1985983839, now seen corresponding path program 1 times [2021-11-23 02:08:15,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:15,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172256332] [2021-11-23 02:08:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:15,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:16,092 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 02:08:16,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:16,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172256332] [2021-11-23 02:08:16,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172256332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:16,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:16,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:16,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645803199] [2021-11-23 02:08:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:16,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:16,096 INFO L87 Difference]: Start difference. First operand 8383 states and 11520 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 02:08:18,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:20,973 INFO L93 Difference]: Finished difference Result 8393 states and 11525 transitions. [2021-11-23 02:08:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 89 [2021-11-23 02:08:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:21,012 INFO L225 Difference]: With dead ends: 8393 [2021-11-23 02:08:21,012 INFO L226 Difference]: Without dead ends: 8391 [2021-11-23 02:08:21,018 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 02:08:21,019 INFO L933 BasicCegarLoop]: 2965 mSDtfsCounter, 2876 mSDsluCounter, 4040 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:21,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2880 Valid, 6537 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:08:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2021-11-23 02:08:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 8381. [2021-11-23 02:08:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 4715 states have (on average 1.240084835630965) internal successors, (5847), 4913 states have internal predecessors, (5847), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 11518 transitions. [2021-11-23 02:08:21,530 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 11518 transitions. Word has length 89 [2021-11-23 02:08:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:21,530 INFO L470 AbstractCegarLoop]: Abstraction has 8381 states and 11518 transitions. [2021-11-23 02:08:21,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 02:08:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 11518 transitions. [2021-11-23 02:08:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:08:21,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:21,532 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] [2021-11-23 02:08:21,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:08:21,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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 37 more)] === [2021-11-23 02:08:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash -525696594, now seen corresponding path program 1 times [2021-11-23 02:08:21,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:21,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767245024] [2021-11-23 02:08:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:21,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:21,723 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 02:08:21,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:21,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767245024] [2021-11-23 02:08:21,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767245024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:21,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:21,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54607842] [2021-11-23 02:08:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:21,726 INFO L87 Difference]: Start difference. First operand 8381 states and 11518 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 02:08:24,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:26,293 INFO L93 Difference]: Finished difference Result 8391 states and 11523 transitions. [2021-11-23 02:08:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:26,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 94 [2021-11-23 02:08:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:26,327 INFO L225 Difference]: With dead ends: 8391 [2021-11-23 02:08:26,327 INFO L226 Difference]: Without dead ends: 8389 [2021-11-23 02:08:26,332 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 02:08:26,333 INFO L933 BasicCegarLoop]: 2972 mSDtfsCounter, 2875 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:26,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2879 Valid, 6551 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 02:08:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8389 states. [2021-11-23 02:08:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8389 to 8379. [2021-11-23 02:08:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8379 states, 4714 states have (on average 1.2399236317352567) internal successors, (5845), 4911 states have internal predecessors, (5845), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 11516 transitions. [2021-11-23 02:08:26,867 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 11516 transitions. Word has length 94 [2021-11-23 02:08:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:26,868 INFO L470 AbstractCegarLoop]: Abstraction has 8379 states and 11516 transitions. [2021-11-23 02:08:26,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 02:08:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 11516 transitions. [2021-11-23 02:08:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:08:26,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:26,871 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] [2021-11-23 02:08:26,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:08:26,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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 37 more)] === [2021-11-23 02:08:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1225698173, now seen corresponding path program 1 times [2021-11-23 02:08:26,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:26,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129644037] [2021-11-23 02:08:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:26,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:27,094 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 02:08:27,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:27,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129644037] [2021-11-23 02:08:27,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129644037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:27,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:27,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:27,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427376522] [2021-11-23 02:08:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:27,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:27,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:27,098 INFO L87 Difference]: Start difference. First operand 8379 states and 11516 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:08:29,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:32,003 INFO L93 Difference]: Finished difference Result 8389 states and 11521 transitions. [2021-11-23 02:08:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:32,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 99 [2021-11-23 02:08:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:32,045 INFO L225 Difference]: With dead ends: 8389 [2021-11-23 02:08:32,045 INFO L226 Difference]: Without dead ends: 8387 [2021-11-23 02:08:32,051 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 02:08:32,052 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 2872 mSDsluCounter, 4036 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 6529 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:32,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2876 Valid, 6529 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:08:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8387 states. [2021-11-23 02:08:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8387 to 8377. [2021-11-23 02:08:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8377 states, 4713 states have (on average 1.23976235943136) internal successors, (5843), 4909 states have internal predecessors, (5843), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8377 states to 8377 states and 11514 transitions. [2021-11-23 02:08:32,730 INFO L78 Accepts]: Start accepts. Automaton has 8377 states and 11514 transitions. Word has length 99 [2021-11-23 02:08:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:32,733 INFO L470 AbstractCegarLoop]: Abstraction has 8377 states and 11514 transitions. [2021-11-23 02:08:32,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 02:08:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8377 states and 11514 transitions. [2021-11-23 02:08:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 02:08:32,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:32,738 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] [2021-11-23 02:08:32,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:08:32,738 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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 37 more)] === [2021-11-23 02:08:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -801620318, now seen corresponding path program 1 times [2021-11-23 02:08:32,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:32,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999961048] [2021-11-23 02:08:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:32,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:32,926 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 02:08:32,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:32,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999961048] [2021-11-23 02:08:32,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999961048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:32,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:32,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:08:32,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303179252] [2021-11-23 02:08:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:32,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:32,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:32,929 INFO L87 Difference]: Start difference. First operand 8377 states and 11514 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 02:08:35,415 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 02:08:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:37,977 INFO L93 Difference]: Finished difference Result 8387 states and 11519 transitions. [2021-11-23 02:08:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:37,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 104 [2021-11-23 02:08:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:38,017 INFO L225 Difference]: With dead ends: 8387 [2021-11-23 02:08:38,017 INFO L226 Difference]: Without dead ends: 8385 [2021-11-23 02:08:38,024 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 02:08:38,024 INFO L933 BasicCegarLoop]: 2968 mSDtfsCounter, 2869 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:38,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2873 Valid, 6543 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:08:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-11-23 02:08:38,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8375. [2021-11-23 02:08:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8375 states, 4712 states have (on average 1.2396010186757216) internal successors, (5841), 4907 states have internal predecessors, (5841), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 818 states have return successors, (2855), 2767 states have call predecessors, (2855), 2814 states have call successors, (2855) [2021-11-23 02:08:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 11512 transitions. [2021-11-23 02:08:38,629 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 11512 transitions. Word has length 104 [2021-11-23 02:08:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:38,630 INFO L470 AbstractCegarLoop]: Abstraction has 8375 states and 11512 transitions. [2021-11-23 02:08:38,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 02:08:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 11512 transitions. [2021-11-23 02:08:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 02:08:38,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:38,633 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:08:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:08:38,634 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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 37 more)] === [2021-11-23 02:08:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 809395226, now seen corresponding path program 1 times [2021-11-23 02:08:38,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191521589] [2021-11-23 02:08:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:38,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-23 02:08:38,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191521589] [2021-11-23 02:08:38,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191521589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679817311] [2021-11-23 02:08:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:38,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:38,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:39,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:08:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:40,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 3263 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 02:08:40,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-23 02:08:40,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:08:40,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679817311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:40,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:08:40,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-23 02:08:40,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731472065] [2021-11-23 02:08:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:40,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:08:40,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:08:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:08:40,819 INFO L87 Difference]: Start difference. First operand 8375 states and 11512 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:08:44,037 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 02:08:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:49,425 INFO L93 Difference]: Finished difference Result 17532 states and 24352 transitions. [2021-11-23 02:08:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:08:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 137 [2021-11-23 02:08:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:49,469 INFO L225 Difference]: With dead ends: 17532 [2021-11-23 02:08:49,469 INFO L226 Difference]: Without dead ends: 9176 [2021-11-23 02:08:49,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:08:49,519 INFO L933 BasicCegarLoop]: 3018 mSDtfsCounter, 133 mSDsluCounter, 16789 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 17865 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:49,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 17865 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2374 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 02:08:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2021-11-23 02:08:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 8381. [2021-11-23 02:08:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 4716 states have (on average 1.2393977947413062) internal successors, (5845), 4911 states have internal predecessors, (5845), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 820 states have return successors, (2866), 2769 states have call predecessors, (2866), 2814 states have call successors, (2866) [2021-11-23 02:08:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 11527 transitions. [2021-11-23 02:08:50,015 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 11527 transitions. Word has length 137 [2021-11-23 02:08:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:50,015 INFO L470 AbstractCegarLoop]: Abstraction has 8381 states and 11527 transitions. [2021-11-23 02:08:50,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:08:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 11527 transitions. [2021-11-23 02:08:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-23 02:08:50,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:50,019 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:08:50,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:50,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:50,223 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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 37 more)] === [2021-11-23 02:08:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash 48642969, now seen corresponding path program 1 times [2021-11-23 02:08:50,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:50,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36571998] [2021-11-23 02:08:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:50,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-23 02:08:50,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:50,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36571998] [2021-11-23 02:08:50,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36571998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:50,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258144440] [2021-11-23 02:08:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:50,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:50,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:50,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:08:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:51,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 3308 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 02:08:51,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-23 02:08:52,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:08:52,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258144440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:52,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:08:52,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-23 02:08:52,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231498101] [2021-11-23 02:08:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:52,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:08:52,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:08:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:08:52,351 INFO L87 Difference]: Start difference. First operand 8381 states and 11527 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:08:55,249 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 02:09:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:00,702 INFO L93 Difference]: Finished difference Result 17550 states and 24382 transitions. [2021-11-23 02:09:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:00,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-23 02:09:00,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:00,738 INFO L225 Difference]: With dead ends: 17550 [2021-11-23 02:09:00,738 INFO L226 Difference]: Without dead ends: 9175 [2021-11-23 02:09:00,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:09:00,785 INFO L933 BasicCegarLoop]: 2780 mSDtfsCounter, 132 mSDsluCounter, 15546 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 16536 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:00,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 16536 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2178 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-23 02:09:00,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9175 states. [2021-11-23 02:09:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9175 to 8383. [2021-11-23 02:09:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8383 states, 4718 states have (on average 1.2392963119966087) internal successors, (5847), 4912 states have internal predecessors, (5847), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 820 states have return successors, (2866), 2770 states have call predecessors, (2866), 2814 states have call successors, (2866) [2021-11-23 02:09:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8383 states to 8383 states and 11529 transitions. [2021-11-23 02:09:01,415 INFO L78 Accepts]: Start accepts. Automaton has 8383 states and 11529 transitions. Word has length 150 [2021-11-23 02:09:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:01,415 INFO L470 AbstractCegarLoop]: Abstraction has 8383 states and 11529 transitions. [2021-11-23 02:09:01,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:09:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8383 states and 11529 transitions. [2021-11-23 02:09:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 02:09:01,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:01,418 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] [2021-11-23 02:09:01,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:09:01,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 02:09:01,625 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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 37 more)] === [2021-11-23 02:09:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1522609920, now seen corresponding path program 1 times [2021-11-23 02:09:01,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:01,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752674614] [2021-11-23 02:09:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:01,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:01,802 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 02:09:01,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752674614] [2021-11-23 02:09:01,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752674614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:01,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:01,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:01,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548247127] [2021-11-23 02:09:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:01,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:01,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:01,806 INFO L87 Difference]: Start difference. First operand 8383 states and 11529 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:09:04,290 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 02:09:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:06,802 INFO L93 Difference]: Finished difference Result 8393 states and 11534 transitions. [2021-11-23 02:09:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 109 [2021-11-23 02:09:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:06,833 INFO L225 Difference]: With dead ends: 8393 [2021-11-23 02:09:06,833 INFO L226 Difference]: Without dead ends: 8391 [2021-11-23 02:09:06,837 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 02:09:06,838 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 2866 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:06,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 6683 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:09:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2021-11-23 02:09:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 8381. [2021-11-23 02:09:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 4717 states have (on average 1.239135043459826) internal successors, (5845), 4910 states have internal predecessors, (5845), 2816 states have call successors, (2816), 819 states have call predecessors, (2816), 820 states have return successors, (2866), 2770 states have call predecessors, (2866), 2814 states have call successors, (2866) [2021-11-23 02:09:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 11527 transitions. [2021-11-23 02:09:07,358 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 11527 transitions. Word has length 109 [2021-11-23 02:09:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:07,359 INFO L470 AbstractCegarLoop]: Abstraction has 8381 states and 11527 transitions. [2021-11-23 02:09:07,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:09:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 11527 transitions. [2021-11-23 02:09:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-23 02:09:07,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:07,362 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:09:07,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:09:07,363 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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 37 more)] === [2021-11-23 02:09:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash 38554497, now seen corresponding path program 1 times [2021-11-23 02:09:07,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441316590] [2021-11-23 02:09:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:07,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-23 02:09:07,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441316590] [2021-11-23 02:09:07,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441316590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:07,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:07,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:09:07,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417416683] [2021-11-23 02:09:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:07,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:07,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:09:07,658 INFO L87 Difference]: Start difference. First operand 8381 states and 11527 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:09:11,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:20,628 INFO L93 Difference]: Finished difference Result 16255 states and 22831 transitions. [2021-11-23 02:09:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:09:20,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2021-11-23 02:09:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:20,688 INFO L225 Difference]: With dead ends: 16255 [2021-11-23 02:09:20,688 INFO L226 Difference]: Without dead ends: 16253 [2021-11-23 02:09:20,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 02:09:20,698 INFO L933 BasicCegarLoop]: 4046 mSDtfsCounter, 2907 mSDsluCounter, 15032 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 17320 SdHoareTripleChecker+Invalid, 3730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:20,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 17320 Invalid, 3730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3726 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-23 02:09:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16253 states. [2021-11-23 02:09:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16253 to 15748. [2021-11-23 02:09:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15748 states, 8891 states have (on average 1.2420425149027106) internal successors, (11043), 9201 states have internal predecessors, (11043), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 22119 transitions. [2021-11-23 02:09:21,722 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 22119 transitions. Word has length 176 [2021-11-23 02:09:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:21,723 INFO L470 AbstractCegarLoop]: Abstraction has 15748 states and 22119 transitions. [2021-11-23 02:09:21,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:09:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 22119 transitions. [2021-11-23 02:09:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 02:09:21,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:21,726 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] [2021-11-23 02:09:21,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:09:21,727 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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 37 more)] === [2021-11-23 02:09:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 804878379, now seen corresponding path program 1 times [2021-11-23 02:09:21,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:21,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136285977] [2021-11-23 02:09:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:21,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:21,905 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 02:09:21,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:21,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136285977] [2021-11-23 02:09:21,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136285977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:21,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:21,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781655546] [2021-11-23 02:09:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:21,908 INFO L87 Difference]: Start difference. First operand 15748 states and 22119 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 02:09:24,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:27,407 INFO L93 Difference]: Finished difference Result 15758 states and 22124 transitions. [2021-11-23 02:09:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 114 [2021-11-23 02:09:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:27,461 INFO L225 Difference]: With dead ends: 15758 [2021-11-23 02:09:27,462 INFO L226 Difference]: Without dead ends: 15756 [2021-11-23 02:09:27,470 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 02:09:27,471 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 2863 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:27,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 6683 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:09:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15756 states. [2021-11-23 02:09:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15756 to 15746. [2021-11-23 02:09:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15746 states, 8890 states have (on average 1.2419572553430822) internal successors, (11041), 9199 states have internal predecessors, (11041), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15746 states to 15746 states and 22117 transitions. [2021-11-23 02:09:28,528 INFO L78 Accepts]: Start accepts. Automaton has 15746 states and 22117 transitions. Word has length 114 [2021-11-23 02:09:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:28,528 INFO L470 AbstractCegarLoop]: Abstraction has 15746 states and 22117 transitions. [2021-11-23 02:09:28,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 02:09:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15746 states and 22117 transitions. [2021-11-23 02:09:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-23 02:09:28,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:28,532 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:09:28,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:09:28,532 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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 37 more)] === [2021-11-23 02:09:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1939378876, now seen corresponding path program 1 times [2021-11-23 02:09:28,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:28,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876696391] [2021-11-23 02:09:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:28,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-23 02:09:28,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876696391] [2021-11-23 02:09:28,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876696391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:28,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:28,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:28,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125378935] [2021-11-23 02:09:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:28,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:28,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:28,746 INFO L87 Difference]: Start difference. First operand 15746 states and 22117 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:09:31,074 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 02:09:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:33,232 INFO L93 Difference]: Finished difference Result 31444 states and 44837 transitions. [2021-11-23 02:09:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:33,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2021-11-23 02:09:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:33,332 INFO L225 Difference]: With dead ends: 31444 [2021-11-23 02:09:33,333 INFO L226 Difference]: Without dead ends: 15738 [2021-11-23 02:09:33,402 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 02:09:33,403 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 2848 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:33,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 3643 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 02:09:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15738 states. [2021-11-23 02:09:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15738 to 15730. [2021-11-23 02:09:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15730 states, 8874 states have (on average 1.240590489069191) internal successors, (11009), 9183 states have internal predecessors, (11009), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15730 states to 15730 states and 22085 transitions. [2021-11-23 02:09:34,430 INFO L78 Accepts]: Start accepts. Automaton has 15730 states and 22085 transitions. Word has length 179 [2021-11-23 02:09:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:34,431 INFO L470 AbstractCegarLoop]: Abstraction has 15730 states and 22085 transitions. [2021-11-23 02:09:34,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:09:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 15730 states and 22085 transitions. [2021-11-23 02:09:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 02:09:34,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:34,433 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] [2021-11-23 02:09:34,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 02:09:34,433 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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 37 more)] === [2021-11-23 02:09:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1067816303, now seen corresponding path program 1 times [2021-11-23 02:09:34,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:34,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666015484] [2021-11-23 02:09:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:34,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:34,588 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 02:09:34,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:34,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666015484] [2021-11-23 02:09:34,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666015484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:34,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:34,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227025703] [2021-11-23 02:09:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:34,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:34,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:34,592 INFO L87 Difference]: Start difference. First operand 15730 states and 22085 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 02:09:37,063 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 02:09:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:39,944 INFO L93 Difference]: Finished difference Result 15738 states and 22089 transitions. [2021-11-23 02:09:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 119 [2021-11-23 02:09:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:40,005 INFO L225 Difference]: With dead ends: 15738 [2021-11-23 02:09:40,006 INFO L226 Difference]: Without dead ends: 15736 [2021-11-23 02:09:40,017 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 02:09:40,018 INFO L933 BasicCegarLoop]: 3036 mSDtfsCounter, 2855 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 6679 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:40,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2859 Valid, 6679 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:09:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2021-11-23 02:09:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 15728. [2021-11-23 02:09:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 8873 states have (on average 1.2405049025132424) internal successors, (11007), 9181 states have internal predecessors, (11007), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 22083 transitions. [2021-11-23 02:09:41,107 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 22083 transitions. Word has length 119 [2021-11-23 02:09:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:41,107 INFO L470 AbstractCegarLoop]: Abstraction has 15728 states and 22083 transitions. [2021-11-23 02:09:41,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 02:09:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 22083 transitions. [2021-11-23 02:09:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 02:09:41,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:41,110 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] [2021-11-23 02:09:41,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 02:09:41,110 INFO L402 AbstractCegarLoop]: === Iteration 20 === 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 37 more)] === [2021-11-23 02:09:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1374798202, now seen corresponding path program 1 times [2021-11-23 02:09:41,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:41,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948717540] [2021-11-23 02:09:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:41,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:41,260 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 02:09:41,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:41,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948717540] [2021-11-23 02:09:41,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948717540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:41,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:41,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:41,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327103524] [2021-11-23 02:09:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:41,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:41,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:41,263 INFO L87 Difference]: Start difference. First operand 15728 states and 22083 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 02:09:43,675 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 02:09:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:47,017 INFO L93 Difference]: Finished difference Result 15736 states and 22087 transitions. [2021-11-23 02:09:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 124 [2021-11-23 02:09:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:47,075 INFO L225 Difference]: With dead ends: 15736 [2021-11-23 02:09:47,075 INFO L226 Difference]: Without dead ends: 15734 [2021-11-23 02:09:47,084 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 02:09:47,085 INFO L933 BasicCegarLoop]: 3034 mSDtfsCounter, 2852 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 6675 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:47,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 6675 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:09:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15734 states. [2021-11-23 02:09:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15734 to 15726. [2021-11-23 02:09:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15726 states, 8872 states have (on average 1.240419296663661) internal successors, (11005), 9179 states have internal predecessors, (11005), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15726 states to 15726 states and 22081 transitions. [2021-11-23 02:09:48,235 INFO L78 Accepts]: Start accepts. Automaton has 15726 states and 22081 transitions. Word has length 124 [2021-11-23 02:09:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:48,236 INFO L470 AbstractCegarLoop]: Abstraction has 15726 states and 22081 transitions. [2021-11-23 02:09:48,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 02:09:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 15726 states and 22081 transitions. [2021-11-23 02:09:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 02:09:48,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:48,238 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] [2021-11-23 02:09:48,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 02:09:48,238 INFO L402 AbstractCegarLoop]: === Iteration 21 === 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 37 more)] === [2021-11-23 02:09:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1272319479, now seen corresponding path program 1 times [2021-11-23 02:09:48,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921674378] [2021-11-23 02:09:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:48,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:48,387 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 02:09:48,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921674378] [2021-11-23 02:09:48,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921674378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:48,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:48,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:48,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785050365] [2021-11-23 02:09:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:48,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:48,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:48,390 INFO L87 Difference]: Start difference. First operand 15726 states and 22081 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 02:09:50,869 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 02:09:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:53,624 INFO L93 Difference]: Finished difference Result 15734 states and 22085 transitions. [2021-11-23 02:09:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 129 [2021-11-23 02:09:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:53,693 INFO L225 Difference]: With dead ends: 15734 [2021-11-23 02:09:53,693 INFO L226 Difference]: Without dead ends: 15732 [2021-11-23 02:09:53,706 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 02:09:53,707 INFO L933 BasicCegarLoop]: 3032 mSDtfsCounter, 2849 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 6671 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:53,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2853 Valid, 6671 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:09:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15732 states. [2021-11-23 02:09:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15732 to 15724. [2021-11-23 02:09:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 8871 states have (on average 1.2403336715139217) internal successors, (11003), 9177 states have internal predecessors, (11003), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:09:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 22079 transitions. [2021-11-23 02:09:55,028 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 22079 transitions. Word has length 129 [2021-11-23 02:09:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:55,029 INFO L470 AbstractCegarLoop]: Abstraction has 15724 states and 22079 transitions. [2021-11-23 02:09:55,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 02:09:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 22079 transitions. [2021-11-23 02:09:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 02:09:55,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:55,032 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] [2021-11-23 02:09:55,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 02:09:55,032 INFO L402 AbstractCegarLoop]: === Iteration 22 === 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 37 more)] === [2021-11-23 02:09:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1430098682, now seen corresponding path program 1 times [2021-11-23 02:09:55,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254871036] [2021-11-23 02:09:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:55,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:55,203 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 02:09:55,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:55,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254871036] [2021-11-23 02:09:55,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254871036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:55,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:55,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:55,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150414856] [2021-11-23 02:09:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:55,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:55,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:55,206 INFO L87 Difference]: Start difference. First operand 15724 states and 22079 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:09:57,597 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 02:10:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:00,502 INFO L93 Difference]: Finished difference Result 15732 states and 22083 transitions. [2021-11-23 02:10:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:10:00,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 134 [2021-11-23 02:10:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:00,548 INFO L225 Difference]: With dead ends: 15732 [2021-11-23 02:10:00,548 INFO L226 Difference]: Without dead ends: 15730 [2021-11-23 02:10:00,556 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 02:10:00,556 INFO L933 BasicCegarLoop]: 3030 mSDtfsCounter, 2846 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 6667 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:00,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 6667 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:10:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15730 states. [2021-11-23 02:10:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15730 to 15722. [2021-11-23 02:10:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15722 states, 8870 states have (on average 1.2402480270574971) internal successors, (11001), 9175 states have internal predecessors, (11001), 5279 states have call successors, (5279), 1532 states have call predecessors, (5279), 1550 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15722 states to 15722 states and 22077 transitions. [2021-11-23 02:10:01,692 INFO L78 Accepts]: Start accepts. Automaton has 15722 states and 22077 transitions. Word has length 134 [2021-11-23 02:10:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:01,693 INFO L470 AbstractCegarLoop]: Abstraction has 15722 states and 22077 transitions. [2021-11-23 02:10:01,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:10:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 15722 states and 22077 transitions. [2021-11-23 02:10:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-23 02:10:01,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:01,695 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:10:01,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 02:10:01,695 INFO L402 AbstractCegarLoop]: === Iteration 23 === 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 37 more)] === [2021-11-23 02:10:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1303698816, now seen corresponding path program 1 times [2021-11-23 02:10:01,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:01,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489023689] [2021-11-23 02:10:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:01,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-23 02:10:01,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:01,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489023689] [2021-11-23 02:10:01,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489023689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:01,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:01,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:10:01,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715138535] [2021-11-23 02:10:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:01,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:01,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:01,918 INFO L87 Difference]: Start difference. First operand 15722 states and 22077 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:10:04,614 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 02:10:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:08,309 INFO L93 Difference]: Finished difference Result 15836 states and 22170 transitions. [2021-11-23 02:10:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 200 [2021-11-23 02:10:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:08,359 INFO L225 Difference]: With dead ends: 15836 [2021-11-23 02:10:08,360 INFO L226 Difference]: Without dead ends: 15834 [2021-11-23 02:10:08,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:10:08,369 INFO L933 BasicCegarLoop]: 3021 mSDtfsCounter, 2829 mSDsluCounter, 7568 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 9675 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:08,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 9675 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1344 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 02:10:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15834 states. [2021-11-23 02:10:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15834 to 15826. [2021-11-23 02:10:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15826 states, 8942 states have (on average 1.2392082308208454) internal successors, (11081), 9247 states have internal predecessors, (11081), 5279 states have call successors, (5279), 1564 states have call predecessors, (5279), 1582 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15826 states to 15826 states and 22157 transitions. [2021-11-23 02:10:09,500 INFO L78 Accepts]: Start accepts. Automaton has 15826 states and 22157 transitions. Word has length 200 [2021-11-23 02:10:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:09,501 INFO L470 AbstractCegarLoop]: Abstraction has 15826 states and 22157 transitions. [2021-11-23 02:10:09,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:10:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15826 states and 22157 transitions. [2021-11-23 02:10:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 02:10:09,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:09,504 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:10:09,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 02:10:09,504 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-23 02:10:09,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:09,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2091261356, now seen corresponding path program 1 times [2021-11-23 02:10:09,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:09,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709744370] [2021-11-23 02:10:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:09,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-11-23 02:10:09,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709744370] [2021-11-23 02:10:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709744370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:09,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:09,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703820932] [2021-11-23 02:10:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:09,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:09,671 INFO L87 Difference]: Start difference. First operand 15826 states and 22157 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:10:12,017 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 02:10:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:14,377 INFO L93 Difference]: Finished difference Result 31602 states and 44232 transitions. [2021-11-23 02:10:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 185 [2021-11-23 02:10:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:14,428 INFO L225 Difference]: With dead ends: 31602 [2021-11-23 02:10:14,428 INFO L226 Difference]: Without dead ends: 15816 [2021-11-23 02:10:14,490 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 02:10:14,491 INFO L933 BasicCegarLoop]: 3013 mSDtfsCounter, 2868 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:14,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 3620 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 02:10:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15816 states. [2021-11-23 02:10:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15816 to 15808. [2021-11-23 02:10:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15808 states, 8925 states have (on average 1.2378711484593838) internal successors, (11048), 9229 states have internal predecessors, (11048), 5279 states have call successors, (5279), 1564 states have call predecessors, (5279), 1582 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15808 states to 15808 states and 22124 transitions. [2021-11-23 02:10:15,753 INFO L78 Accepts]: Start accepts. Automaton has 15808 states and 22124 transitions. Word has length 185 [2021-11-23 02:10:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:15,754 INFO L470 AbstractCegarLoop]: Abstraction has 15808 states and 22124 transitions. [2021-11-23 02:10:15,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:10:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15808 states and 22124 transitions. [2021-11-23 02:10:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 02:10:15,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:15,759 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] [2021-11-23 02:10:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 02:10:15,760 INFO L402 AbstractCegarLoop]: === Iteration 25 === 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 37 more)] === [2021-11-23 02:10:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1567768329, now seen corresponding path program 1 times [2021-11-23 02:10:15,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396921619] [2021-11-23 02:10:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:15,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:15,942 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 02:10:15,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:15,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396921619] [2021-11-23 02:10:15,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396921619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:15,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:15,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:10:15,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702521567] [2021-11-23 02:10:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:15,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:10:15,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:10:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:10:15,946 INFO L87 Difference]: Start difference. First operand 15808 states and 22124 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 02:10:18,447 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 02:10:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:21,522 INFO L93 Difference]: Finished difference Result 15816 states and 22128 transitions. [2021-11-23 02:10:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:10:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 139 [2021-11-23 02:10:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:21,572 INFO L225 Difference]: With dead ends: 15816 [2021-11-23 02:10:21,572 INFO L226 Difference]: Without dead ends: 15814 [2021-11-23 02:10:21,581 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 02:10:21,581 INFO L933 BasicCegarLoop]: 3010 mSDtfsCounter, 2838 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2842 SdHoareTripleChecker+Valid, 6627 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:21,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2842 Valid, 6627 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:10:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15814 states. [2021-11-23 02:10:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15814 to 15806. [2021-11-23 02:10:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15806 states, 8924 states have (on average 1.2377857463021067) internal successors, (11046), 9227 states have internal predecessors, (11046), 5279 states have call successors, (5279), 1564 states have call predecessors, (5279), 1582 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15806 states to 15806 states and 22122 transitions. [2021-11-23 02:10:22,763 INFO L78 Accepts]: Start accepts. Automaton has 15806 states and 22122 transitions. Word has length 139 [2021-11-23 02:10:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:22,764 INFO L470 AbstractCegarLoop]: Abstraction has 15806 states and 22122 transitions. [2021-11-23 02:10:22,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 02:10:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15806 states and 22122 transitions. [2021-11-23 02:10:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-23 02:10:22,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:22,768 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:10:22,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 02:10:22,769 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-23 02:10:22,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash -370443324, now seen corresponding path program 1 times [2021-11-23 02:10:22,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:22,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188725189] [2021-11-23 02:10:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:22,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-23 02:10:22,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:22,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188725189] [2021-11-23 02:10:22,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188725189] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:10:22,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930880352] [2021-11-23 02:10:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:22,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:22,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:22,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:10:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:24,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 3538 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:10:24,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-23 02:10:24,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:10:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930880352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:24,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:10:24,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-23 02:10:24,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260831279] [2021-11-23 02:10:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:24,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:24,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:10:24,435 INFO L87 Difference]: Start difference. First operand 15806 states and 22122 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:10:26,674 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 02:10:29,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:29,180 INFO L93 Difference]: Finished difference Result 31562 states and 44162 transitions. [2021-11-23 02:10:29,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:29,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 203 [2021-11-23 02:10:29,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:29,254 INFO L225 Difference]: With dead ends: 31562 [2021-11-23 02:10:29,254 INFO L226 Difference]: Without dead ends: 15796 [2021-11-23 02:10:29,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:10:29,309 INFO L933 BasicCegarLoop]: 3006 mSDtfsCounter, 2828 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2830 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:29,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2830 Valid, 3613 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 02:10:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15796 states. [2021-11-23 02:10:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15796 to 15788. [2021-11-23 02:10:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15788 states, 8907 states have (on average 1.2364432468844728) internal successors, (11013), 9209 states have internal predecessors, (11013), 5279 states have call successors, (5279), 1564 states have call predecessors, (5279), 1582 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15788 states to 15788 states and 22089 transitions. [2021-11-23 02:10:30,575 INFO L78 Accepts]: Start accepts. Automaton has 15788 states and 22089 transitions. Word has length 203 [2021-11-23 02:10:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:30,575 INFO L470 AbstractCegarLoop]: Abstraction has 15788 states and 22089 transitions. [2021-11-23 02:10:30,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:10:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15788 states and 22089 transitions. [2021-11-23 02:10:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 02:10:30,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:30,579 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] [2021-11-23 02:10:30,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:30,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-23 02:10:30,797 INFO L402 AbstractCegarLoop]: === Iteration 27 === 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 37 more)] === [2021-11-23 02:10:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1134720957, now seen corresponding path program 1 times [2021-11-23 02:10:30,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:30,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392218722] [2021-11-23 02:10:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:30,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:30,942 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 02:10:30,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392218722] [2021-11-23 02:10:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392218722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:30,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:30,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:10:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373390328] [2021-11-23 02:10:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:30,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:10:30,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:10:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:10:30,946 INFO L87 Difference]: Start difference. First operand 15788 states and 22089 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 02:10:33,481 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 02:10:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:36,521 INFO L93 Difference]: Finished difference Result 15796 states and 22093 transitions. [2021-11-23 02:10:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:10:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 144 [2021-11-23 02:10:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:36,572 INFO L225 Difference]: With dead ends: 15796 [2021-11-23 02:10:36,572 INFO L226 Difference]: Without dead ends: 15794 [2021-11-23 02:10:36,581 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 02:10:36,582 INFO L933 BasicCegarLoop]: 3003 mSDtfsCounter, 2830 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2834 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:36,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2834 Valid, 6613 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:10:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15794 states. [2021-11-23 02:10:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15794 to 15786. [2021-11-23 02:10:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15786 states, 8906 states have (on average 1.2363575117898047) internal successors, (11011), 9207 states have internal predecessors, (11011), 5279 states have call successors, (5279), 1564 states have call predecessors, (5279), 1582 states have return successors, (5797), 5232 states have call predecessors, (5797), 5277 states have call successors, (5797) [2021-11-23 02:10:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15786 states to 15786 states and 22087 transitions. [2021-11-23 02:10:37,815 INFO L78 Accepts]: Start accepts. Automaton has 15786 states and 22087 transitions. Word has length 144 [2021-11-23 02:10:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:37,816 INFO L470 AbstractCegarLoop]: Abstraction has 15786 states and 22087 transitions. [2021-11-23 02:10:37,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 02:10:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15786 states and 22087 transitions. [2021-11-23 02:10:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-23 02:10:37,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:37,820 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, 1, 1, 1] [2021-11-23 02:10:37,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 02:10:37,820 INFO L402 AbstractCegarLoop]: === Iteration 28 === 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 37 more)] === [2021-11-23 02:10:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:37,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1901428709, now seen corresponding path program 1 times [2021-11-23 02:10:37,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:37,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490889620] [2021-11-23 02:10:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:37,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:37,966 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 02:10:37,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:37,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490889620] [2021-11-23 02:10:37,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490889620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:37,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:10:37,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480067208] [2021-11-23 02:10:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:37,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:10:37,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:10:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:10:37,970 INFO L87 Difference]: Start difference. First operand 15786 states and 22087 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:10:40,465 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 02:10:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:43,768 INFO L93 Difference]: Finished difference Result 15794 states and 22091 transitions. [2021-11-23 02:10:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:10:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 149 [2021-11-23 02:10:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:43,829 INFO L225 Difference]: With dead ends: 15794 [2021-11-23 02:10:43,829 INFO L226 Difference]: Without dead ends: 15638 [2021-11-23 02:10:43,842 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 02:10:43,843 INFO L933 BasicCegarLoop]: 3002 mSDtfsCounter, 2827 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2829 SdHoareTripleChecker+Valid, 6611 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:43,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2829 Valid, 6611 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 02:10:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15638 states. [2021-11-23 02:10:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15638 to 15630. [2021-11-23 02:10:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15630 states, 8831 states have (on average 1.23745895142113) internal successors, (10928), 9126 states have internal predecessors, (10928), 5223 states have call successors, (5223), 1541 states have call predecessors, (5223), 1558 states have return successors, (5739), 5180 states have call predecessors, (5739), 5219 states have call successors, (5739) [2021-11-23 02:10:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15630 states to 15630 states and 21890 transitions. [2021-11-23 02:10:45,135 INFO L78 Accepts]: Start accepts. Automaton has 15630 states and 21890 transitions. Word has length 149 [2021-11-23 02:10:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:45,135 INFO L470 AbstractCegarLoop]: Abstraction has 15630 states and 21890 transitions. [2021-11-23 02:10:45,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:10:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15630 states and 21890 transitions. [2021-11-23 02:10:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 02:10:45,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:45,139 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 02:10:45,140 INFO L402 AbstractCegarLoop]: === Iteration 29 === 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 37 more)] === [2021-11-23 02:10:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1301266572, now seen corresponding path program 1 times [2021-11-23 02:10:45,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:45,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191505615] [2021-11-23 02:10:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:45,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-23 02:10:45,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:45,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191505615] [2021-11-23 02:10:45,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191505615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:45,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:45,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:10:45,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453254996] [2021-11-23 02:10:45,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:45,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:45,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:45,338 INFO L87 Difference]: Start difference. First operand 15630 states and 21890 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:10:47,951 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 02:10:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:52,748 INFO L93 Difference]: Finished difference Result 15632 states and 21891 transitions. [2021-11-23 02:10:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:10:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 188 [2021-11-23 02:10:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:52,804 INFO L225 Difference]: With dead ends: 15632 [2021-11-23 02:10:52,804 INFO L226 Difference]: Without dead ends: 15630 [2021-11-23 02:10:52,824 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 02:10:52,833 INFO L933 BasicCegarLoop]: 2509 mSDtfsCounter, 19 mSDsluCounter, 8540 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10020 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:52,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 10020 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1388 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:10:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15630 states. [2021-11-23 02:10:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15630 to 15630. [2021-11-23 02:10:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15630 states, 8831 states have (on average 1.2365530517495187) internal successors, (10920), 9126 states have internal predecessors, (10920), 5223 states have call successors, (5223), 1541 states have call predecessors, (5223), 1558 states have return successors, (5739), 5180 states have call predecessors, (5739), 5219 states have call successors, (5739) [2021-11-23 02:10:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15630 states to 15630 states and 21882 transitions. [2021-11-23 02:10:54,187 INFO L78 Accepts]: Start accepts. Automaton has 15630 states and 21882 transitions. Word has length 188 [2021-11-23 02:10:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:54,188 INFO L470 AbstractCegarLoop]: Abstraction has 15630 states and 21882 transitions. [2021-11-23 02:10:54,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:10:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15630 states and 21882 transitions. [2021-11-23 02:10:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-23 02:10:54,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:54,193 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:54,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 02:10:54,193 INFO L402 AbstractCegarLoop]: === Iteration 30 === 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 37 more)] === [2021-11-23 02:10:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1542292671, now seen corresponding path program 1 times [2021-11-23 02:10:54,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:54,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440733824] [2021-11-23 02:10:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:54,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-23 02:10:54,500 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440733824] [2021-11-23 02:10:54,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440733824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:54,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:54,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:10:54,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004059206] [2021-11-23 02:10:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:54,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:10:54,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:10:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:10:54,503 INFO L87 Difference]: Start difference. First operand 15630 states and 21882 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:10:57,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:05,514 INFO L93 Difference]: Finished difference Result 17415 states and 24098 transitions. [2021-11-23 02:11:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:11:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2021-11-23 02:11:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:05,579 INFO L225 Difference]: With dead ends: 17415 [2021-11-23 02:11:05,580 INFO L226 Difference]: Without dead ends: 17413 [2021-11-23 02:11:05,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 02:11:05,597 INFO L933 BasicCegarLoop]: 2671 mSDtfsCounter, 2681 mSDsluCounter, 8311 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 9873 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:05,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2685 Valid, 9873 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2827 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-23 02:11:05,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17413 states. [2021-11-23 02:11:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17413 to 17315. [2021-11-23 02:11:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17315 states, 9777 states have (on average 1.2364733558351233) internal successors, (12089), 10096 states have internal predecessors, (12089), 5669 states have call successors, (5669), 1843 states have call predecessors, (5669), 1851 states have return successors, (6227), 5608 states have call predecessors, (6227), 5665 states have call successors, (6227) [2021-11-23 02:11:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17315 states to 17315 states and 23985 transitions. [2021-11-23 02:11:07,082 INFO L78 Accepts]: Start accepts. Automaton has 17315 states and 23985 transitions. Word has length 202 [2021-11-23 02:11:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:07,083 INFO L470 AbstractCegarLoop]: Abstraction has 17315 states and 23985 transitions. [2021-11-23 02:11:07,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:11:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 17315 states and 23985 transitions. [2021-11-23 02:11:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 02:11:07,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:07,088 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 02:11:07,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 02:11:07,089 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_sched_completion__wait_without_initErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-23 02:11:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -929289872, now seen corresponding path program 1 times [2021-11-23 02:11:07,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:07,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175784938] [2021-11-23 02:11:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:07,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-23 02:11:07,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:07,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175784938] [2021-11-23 02:11:07,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175784938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:07,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:07,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:11:07,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51717084] [2021-11-23 02:11:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:07,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:11:07,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:11:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:11:07,327 INFO L87 Difference]: Start difference. First operand 17315 states and 23985 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:11:10,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:15,550 INFO L93 Difference]: Finished difference Result 34616 states and 48557 transitions. [2021-11-23 02:11:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:11:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 204 [2021-11-23 02:11:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:15,610 INFO L225 Difference]: With dead ends: 34616 [2021-11-23 02:11:15,610 INFO L226 Difference]: Without dead ends: 17349 [2021-11-23 02:11:15,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:11:15,670 INFO L933 BasicCegarLoop]: 2510 mSDtfsCounter, 2 mSDsluCounter, 8553 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10032 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:15,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10032 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1390 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 02:11:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17349 states. [2021-11-23 02:11:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17349 to 17329. [2021-11-23 02:11:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17329 states, 9785 states have (on average 1.2362800204394482) internal successors, (12097), 10109 states have internal predecessors, (12097), 5669 states have call successors, (5669), 1843 states have call predecessors, (5669), 1857 states have return successors, (6234), 5609 states have call predecessors, (6234), 5665 states have call successors, (6234) [2021-11-23 02:11:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17329 states to 17329 states and 24000 transitions. [2021-11-23 02:11:16,971 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 24000 transitions. Word has length 204 [2021-11-23 02:11:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:16,972 INFO L470 AbstractCegarLoop]: Abstraction has 17329 states and 24000 transitions. [2021-11-23 02:11:16,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:11:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 24000 transitions. [2021-11-23 02:11:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 02:11:16,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:16,977 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 02:11:16,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 02:11:16,977 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_sched_completion__wait_without_initErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-23 02:11:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash -300250669, now seen corresponding path program 1 times [2021-11-23 02:11:16,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915650792] [2021-11-23 02:11:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:16,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-23 02:11:17,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915650792] [2021-11-23 02:11:17,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915650792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:17,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:11:17,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891395961] [2021-11-23 02:11:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:17,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:11:17,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:11:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:11:17,216 INFO L87 Difference]: Start difference. First operand 17329 states and 24000 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:11:19,791 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 02:11:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:25,428 INFO L93 Difference]: Finished difference Result 34644 states and 48587 transitions. [2021-11-23 02:11:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:11:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 206 [2021-11-23 02:11:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:25,500 INFO L225 Difference]: With dead ends: 34644 [2021-11-23 02:11:25,500 INFO L226 Difference]: Without dead ends: 17363 [2021-11-23 02:11:25,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:11:25,574 INFO L933 BasicCegarLoop]: 2510 mSDtfsCounter, 2 mSDsluCounter, 8553 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10032 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:25,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 10032 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1388 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 02:11:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17363 states. [2021-11-23 02:11:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17363 to 17329. [2021-11-23 02:11:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17329 states, 9785 states have (on average 1.2362800204394482) internal successors, (12097), 10109 states have internal predecessors, (12097), 5669 states have call successors, (5669), 1843 states have call predecessors, (5669), 1857 states have return successors, (6234), 5609 states have call predecessors, (6234), 5665 states have call successors, (6234) [2021-11-23 02:11:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17329 states to 17329 states and 24000 transitions. [2021-11-23 02:11:27,090 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 24000 transitions. Word has length 206 [2021-11-23 02:11:27,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:27,090 INFO L470 AbstractCegarLoop]: Abstraction has 17329 states and 24000 transitions. [2021-11-23 02:11:27,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:11:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 24000 transitions. [2021-11-23 02:11:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-23 02:11:27,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:27,094 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 02:11:27,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 02:11:27,095 INFO L402 AbstractCegarLoop]: === Iteration 33 === 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 37 more)] === [2021-11-23 02:11:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2039728360, now seen corresponding path program 1 times [2021-11-23 02:11:27,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719738827] [2021-11-23 02:11:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:27,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-23 02:11:27,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719738827] [2021-11-23 02:11:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719738827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:27,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:27,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:11:27,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395597089] [2021-11-23 02:11:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:27,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:27,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:27,338 INFO L87 Difference]: Start difference. First operand 17329 states and 24000 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:11:29,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:32,478 INFO L93 Difference]: Finished difference Result 34602 states and 48600 transitions. [2021-11-23 02:11:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:32,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 206 [2021-11-23 02:11:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:32,549 INFO L225 Difference]: With dead ends: 34602 [2021-11-23 02:11:32,549 INFO L226 Difference]: Without dead ends: 17321 [2021-11-23 02:11:32,612 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 02:11:32,612 INFO L933 BasicCegarLoop]: 2504 mSDtfsCounter, 2782 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:32,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 2504 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-23 02:11:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17321 states. [2021-11-23 02:11:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17321 to 17321. [2021-11-23 02:11:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17321 states, 9778 states have (on average 1.2358355491920638) internal successors, (12084), 10101 states have internal predecessors, (12084), 5669 states have call successors, (5669), 1843 states have call predecessors, (5669), 1857 states have return successors, (6234), 5609 states have call predecessors, (6234), 5665 states have call successors, (6234) [2021-11-23 02:11:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 23987 transitions. [2021-11-23 02:11:34,142 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 23987 transitions. Word has length 206 [2021-11-23 02:11:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:34,143 INFO L470 AbstractCegarLoop]: Abstraction has 17321 states and 23987 transitions. [2021-11-23 02:11:34,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:11:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 23987 transitions. [2021-11-23 02:11:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 02:11:34,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:34,146 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:34,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 02:11:34,146 INFO L402 AbstractCegarLoop]: === Iteration 34 === 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 37 more)] === [2021-11-23 02:11:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash -835726814, now seen corresponding path program 1 times [2021-11-23 02:11:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:34,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937404375] [2021-11-23 02:11:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:34,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-11-23 02:11:34,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937404375] [2021-11-23 02:11:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937404375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:11:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889492039] [2021-11-23 02:11:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:34,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:34,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:11:34,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:11:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:35,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 3747 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 02:11:35,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-11-23 02:11:36,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:11:36,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889492039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:36,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:11:36,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2021-11-23 02:11:36,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065170860] [2021-11-23 02:11:36,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:36,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:11:36,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:11:36,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:11:36,478 INFO L87 Difference]: Start difference. First operand 17321 states and 23987 transitions. Second operand has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 7 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-23 02:11:40,194 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 02:11:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:53,088 INFO L93 Difference]: Finished difference Result 36536 states and 51161 transitions. [2021-11-23 02:11:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:11:53,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 7 states have call predecessors, (34), 6 states have call successors, (34) Word has length 233 [2021-11-23 02:11:53,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:53,169 INFO L225 Difference]: With dead ends: 36536 [2021-11-23 02:11:53,169 INFO L226 Difference]: Without dead ends: 19255 [2021-11-23 02:11:53,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:11:53,228 INFO L933 BasicCegarLoop]: 2779 mSDtfsCounter, 436 mSDsluCounter, 30752 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 350 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 29853 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:53,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 29853 Invalid, 5203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [350 Valid, 4852 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2021-11-23 02:11:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19255 states. [2021-11-23 02:11:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19255 to 17433. [2021-11-23 02:11:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17433 states, 9850 states have (on average 1.2341116751269035) internal successors, (12156), 10173 states have internal predecessors, (12156), 5701 states have call successors, (5701), 1843 states have call predecessors, (5701), 1865 states have return successors, (6282), 5649 states have call predecessors, (6282), 5697 states have call successors, (6282) [2021-11-23 02:11:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17433 states to 17433 states and 24139 transitions. [2021-11-23 02:11:54,744 INFO L78 Accepts]: Start accepts. Automaton has 17433 states and 24139 transitions. Word has length 233 [2021-11-23 02:11:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:54,745 INFO L470 AbstractCegarLoop]: Abstraction has 17433 states and 24139 transitions. [2021-11-23 02:11:54,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 10 states have internal predecessors, (80), 6 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 7 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-23 02:11:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 17433 states and 24139 transitions. [2021-11-23 02:11:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-23 02:11:54,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:54,748 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:11:54,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 02:11:54,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:54,949 INFO L402 AbstractCegarLoop]: === Iteration 35 === 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 37 more)] === [2021-11-23 02:11:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash 852210260, now seen corresponding path program 1 times [2021-11-23 02:11:54,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:54,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656587288] [2021-11-23 02:11:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:54,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-23 02:11:55,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656587288] [2021-11-23 02:11:55,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656587288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:55,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:55,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:11:55,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165389405] [2021-11-23 02:11:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:55,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:11:55,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:11:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:11:55,285 INFO L87 Difference]: Start difference. First operand 17433 states and 24139 transitions. Second operand has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 02:11:58,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:06,203 INFO L93 Difference]: Finished difference Result 34882 states and 48498 transitions. [2021-11-23 02:12:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:12:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) Word has length 252 [2021-11-23 02:12:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:06,262 INFO L225 Difference]: With dead ends: 34882 [2021-11-23 02:12:06,263 INFO L226 Difference]: Without dead ends: 17497 [2021-11-23 02:12:06,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:12:06,325 INFO L933 BasicCegarLoop]: 2506 mSDtfsCounter, 3 mSDsluCounter, 17050 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17517 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:06,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 17517 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2446 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-23 02:12:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17497 states. [2021-11-23 02:12:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17497 to 17481. [2021-11-23 02:12:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17481 states, 9882 states have (on average 1.2333535721513864) internal successors, (12188), 10205 states have internal predecessors, (12188), 5701 states have call successors, (5701), 1843 states have call predecessors, (5701), 1881 states have return successors, (6330), 5665 states have call predecessors, (6330), 5697 states have call successors, (6330) [2021-11-23 02:12:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17481 states to 17481 states and 24219 transitions. [2021-11-23 02:12:07,845 INFO L78 Accepts]: Start accepts. Automaton has 17481 states and 24219 transitions. Word has length 252 [2021-11-23 02:12:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:07,845 INFO L470 AbstractCegarLoop]: Abstraction has 17481 states and 24219 transitions. [2021-11-23 02:12:07,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-23 02:12:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17481 states and 24219 transitions. [2021-11-23 02:12:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-23 02:12:07,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:07,849 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:07,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 02:12:07,850 INFO L402 AbstractCegarLoop]: === Iteration 36 === 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 37 more)] === [2021-11-23 02:12:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1163423218, now seen corresponding path program 1 times [2021-11-23 02:12:07,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:07,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358748033] [2021-11-23 02:12:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:07,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-11-23 02:12:08,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:08,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358748033] [2021-11-23 02:12:08,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358748033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:08,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:08,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:12:08,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208473401] [2021-11-23 02:12:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:08,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:12:08,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:12:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:12:08,126 INFO L87 Difference]: Start difference. First operand 17481 states and 24219 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 02:12:10,630 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 02:12:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:15,638 INFO L93 Difference]: Finished difference Result 20701 states and 28392 transitions. [2021-11-23 02:12:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:12:15,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 227 [2021-11-23 02:12:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:15,707 INFO L225 Difference]: With dead ends: 20701 [2021-11-23 02:12:15,707 INFO L226 Difference]: Without dead ends: 20699 [2021-11-23 02:12:15,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 02:12:15,719 INFO L933 BasicCegarLoop]: 2779 mSDtfsCounter, 2667 mSDsluCounter, 6889 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 8844 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:15,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2672 Valid, 8844 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 02:12:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2021-11-23 02:12:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20586. [2021-11-23 02:12:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20586 states, 11751 states have (on average 1.239809377925283) internal successors, (14569), 12149 states have internal predecessors, (14569), 6389 states have call successors, (6389), 2389 states have call predecessors, (6389), 2429 states have return successors, (7268), 6333 states have call predecessors, (7268), 6385 states have call successors, (7268) [2021-11-23 02:12:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20586 states to 20586 states and 28226 transitions. [2021-11-23 02:12:17,599 INFO L78 Accepts]: Start accepts. Automaton has 20586 states and 28226 transitions. Word has length 227 [2021-11-23 02:12:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:17,600 INFO L470 AbstractCegarLoop]: Abstraction has 20586 states and 28226 transitions. [2021-11-23 02:12:17,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-23 02:12:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 20586 states and 28226 transitions. [2021-11-23 02:12:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-23 02:12:17,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:17,604 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:17,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 02:12:17,604 INFO L402 AbstractCegarLoop]: === Iteration 37 === 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 37 more)] === [2021-11-23 02:12:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:17,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1180854715, now seen corresponding path program 1 times [2021-11-23 02:12:17,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:17,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378989088] [2021-11-23 02:12:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:17,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:17,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:12:17,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956051395] [2021-11-23 02:12:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:17,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:17,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:17,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:17,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:12:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:18,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 3879 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 02:12:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-23 02:12:19,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:12:19,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378989088] [2021-11-23 02:12:19,463 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:12:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956051395] [2021-11-23 02:12:19,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956051395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:19,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:19,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 02:12:19,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903761705] [2021-11-23 02:12:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:12:19,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:12:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:12:19,466 INFO L87 Difference]: Start difference. First operand 20586 states and 28226 transitions. Second operand has 13 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2021-11-23 02:12:22,859 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 02:12:38,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:38,377 INFO L93 Difference]: Finished difference Result 43298 states and 60031 transitions. [2021-11-23 02:12:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:12:38,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) Word has length 256 [2021-11-23 02:12:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:38,475 INFO L225 Difference]: With dead ends: 43298 [2021-11-23 02:12:38,475 INFO L226 Difference]: Without dead ends: 22752 [2021-11-23 02:12:38,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:12:38,535 INFO L933 BasicCegarLoop]: 2811 mSDtfsCounter, 447 mSDsluCounter, 34209 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 355 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 32965 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:38,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 32965 Invalid, 5698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [355 Valid, 5342 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2021-11-23 02:12:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22752 states. [2021-11-23 02:12:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22752 to 20778. [2021-11-23 02:12:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20778 states, 11831 states have (on average 1.2388640013523793) internal successors, (14657), 12253 states have internal predecessors, (14657), 6493 states have call successors, (6493), 2389 states have call predecessors, (6493), 2437 states have return successors, (7404), 6437 states have call predecessors, (7404), 6489 states have call successors, (7404) [2021-11-23 02:12:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20778 states to 20778 states and 28554 transitions. [2021-11-23 02:12:40,380 INFO L78 Accepts]: Start accepts. Automaton has 20778 states and 28554 transitions. Word has length 256 [2021-11-23 02:12:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:40,380 INFO L470 AbstractCegarLoop]: Abstraction has 20778 states and 28554 transitions. [2021-11-23 02:12:40,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 7 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (39), 8 states have call predecessors, (39), 7 states have call successors, (39) [2021-11-23 02:12:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 20778 states and 28554 transitions. [2021-11-23 02:12:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-23 02:12:40,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:40,385 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:40,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:12:40,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-23 02:12:40,586 INFO L402 AbstractCegarLoop]: === Iteration 38 === 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 37 more)] === [2021-11-23 02:12:40,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1998373504, now seen corresponding path program 1 times [2021-11-23 02:12:40,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:40,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127661299] [2021-11-23 02:12:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:40,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:40,665 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:12:40,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569718329] [2021-11-23 02:12:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:40,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:40,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:40,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:40,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:12:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:41,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 3846 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 02:12:41,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-23 02:12:42,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:12:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-23 02:12:43,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:43,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127661299] [2021-11-23 02:12:43,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:12:43,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569718329] [2021-11-23 02:12:43,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569718329] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:12:43,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:12:43,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 5 [2021-11-23 02:12:43,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790607402] [2021-11-23 02:12:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:43,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:12:43,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:12:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:12:43,564 INFO L87 Difference]: Start difference. First operand 20778 states and 28554 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:12:46,111 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 02:12:55,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:55,569 INFO L93 Difference]: Finished difference Result 37593 states and 52543 transitions. [2021-11-23 02:12:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:12:55,570 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 256 [2021-11-23 02:12:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:55,703 INFO L225 Difference]: With dead ends: 37593 [2021-11-23 02:12:55,704 INFO L226 Difference]: Without dead ends: 37591 [2021-11-23 02:12:55,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 506 SyntacticMatches, 1 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 02:12:55,717 INFO L933 BasicCegarLoop]: 3682 mSDtfsCounter, 2576 mSDsluCounter, 10803 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 13268 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:55,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2577 Valid, 13268 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1688 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-23 02:12:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37591 states. [2021-11-23 02:12:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37591 to 37296. [2021-11-23 02:12:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37296 states, 21335 states have (on average 1.2363252870869463) internal successors, (26377), 22050 states have internal predecessors, (26377), 11490 states have call successors, (11490), 4325 states have call predecessors, (11490), 4454 states have return successors, (14046), 11417 states have call predecessors, (14046), 11486 states have call successors, (14046) [2021-11-23 02:12:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37296 states to 37296 states and 51913 transitions. [2021-11-23 02:12:59,116 INFO L78 Accepts]: Start accepts. Automaton has 37296 states and 51913 transitions. Word has length 256 [2021-11-23 02:12:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:59,117 INFO L470 AbstractCegarLoop]: Abstraction has 37296 states and 51913 transitions. [2021-11-23 02:12:59,117 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, (47), 3 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:12:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 37296 states and 51913 transitions. [2021-11-23 02:12:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-23 02:12:59,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:59,122 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:59,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:12:59,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-23 02:12:59,337 INFO L402 AbstractCegarLoop]: === Iteration 39 === 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 37 more)] === [2021-11-23 02:12:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash 784510268, now seen corresponding path program 1 times [2021-11-23 02:12:59,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:59,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556427801] [2021-11-23 02:12:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:59,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2021-11-23 02:12:59,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556427801] [2021-11-23 02:12:59,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556427801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:59,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:59,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:12:59,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416031364] [2021-11-23 02:12:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:59,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:12:59,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:12:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:12:59,622 INFO L87 Difference]: Start difference. First operand 37296 states and 51913 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (49), 4 states have call predecessors, (49), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:13:03,135 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 02:13:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:17,891 INFO L93 Difference]: Finished difference Result 39725 states and 55829 transitions. [2021-11-23 02:13:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:13:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (49), 4 states have call predecessors, (49), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 259 [2021-11-23 02:13:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:18,033 INFO L225 Difference]: With dead ends: 39725 [2021-11-23 02:13:18,033 INFO L226 Difference]: Without dead ends: 39723 [2021-11-23 02:13:18,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:13:18,049 INFO L933 BasicCegarLoop]: 2290 mSDtfsCounter, 1273 mSDsluCounter, 6826 mSDsCounter, 0 mSdLazyCounter, 4909 mSolverCounterSat, 1165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 8356 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 4909 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:18,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 8356 Invalid, 6075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1165 Valid, 4909 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2021-11-23 02:13:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39723 states. [2021-11-23 02:13:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39723 to 39025. [2021-11-23 02:13:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39025 states, 22237 states have (on average 1.230786526959572) internal successors, (27369), 23086 states have internal predecessors, (27369), 11963 states have call successors, (11963), 4335 states have call predecessors, (11963), 4808 states have return successors, (15187), 12106 states have call predecessors, (15187), 11959 states have call successors, (15187) [2021-11-23 02:13:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39025 states to 39025 states and 54519 transitions. [2021-11-23 02:13:21,643 INFO L78 Accepts]: Start accepts. Automaton has 39025 states and 54519 transitions. Word has length 259 [2021-11-23 02:13:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:21,644 INFO L470 AbstractCegarLoop]: Abstraction has 39025 states and 54519 transitions. [2021-11-23 02:13:21,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (49), 4 states have call predecessors, (49), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:13:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 39025 states and 54519 transitions. [2021-11-23 02:13:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-23 02:13:21,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:21,650 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:21,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 02:13:21,650 INFO L402 AbstractCegarLoop]: === Iteration 40 === 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 37 more)] === [2021-11-23 02:13:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1021729718, now seen corresponding path program 1 times [2021-11-23 02:13:21,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:21,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19095303] [2021-11-23 02:13:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:21,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:21,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:13:21,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705017759] [2021-11-23 02:13:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:21,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:21,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:21,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:13:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:22,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 4028 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-23 02:13:22,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2021-11-23 02:13:23,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:13:23,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19095303] [2021-11-23 02:13:23,649 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:13:23,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705017759] [2021-11-23 02:13:23,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705017759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:23,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:23,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 02:13:23,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160784309] [2021-11-23 02:13:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:23,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:13:23,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:13:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:13:23,652 INFO L87 Difference]: Start difference. First operand 39025 states and 54519 transitions. Second operand has 13 states, 10 states have (on average 10.5) internal successors, (105), 11 states have internal predecessors, (105), 7 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-23 02:13:27,312 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 02:13:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:46,243 INFO L93 Difference]: Finished difference Result 85630 states and 123668 transitions. [2021-11-23 02:13:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:13:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 10.5) internal successors, (105), 11 states have internal predecessors, (105), 7 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) Word has length 293 [2021-11-23 02:13:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:46,474 INFO L225 Difference]: With dead ends: 85630 [2021-11-23 02:13:46,474 INFO L226 Difference]: Without dead ends: 46637 [2021-11-23 02:13:46,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:13:46,777 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 454 mSDsluCounter, 37333 mSDsCounter, 0 mSdLazyCounter, 5882 mSolverCounterSat, 367 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 36000 SdHoareTripleChecker+Invalid, 6250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 5882 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:46,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 36000 Invalid, 6250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 5882 Invalid, 1 Unknown, 0 Unchecked, 17.1s Time] [2021-11-23 02:13:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46637 states. [2021-11-23 02:13:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46637 to 38998. [2021-11-23 02:13:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38998 states, 22229 states have (on average 1.2308245984974582) internal successors, (27360), 23066 states have internal predecessors, (27360), 11953 states have call successors, (11953), 4335 states have call predecessors, (11953), 4799 states have return successors, (15297), 12090 states have call predecessors, (15297), 11949 states have call successors, (15297) [2021-11-23 02:13:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38998 states to 38998 states and 54610 transitions. [2021-11-23 02:13:50,960 INFO L78 Accepts]: Start accepts. Automaton has 38998 states and 54610 transitions. Word has length 293 [2021-11-23 02:13:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:50,961 INFO L470 AbstractCegarLoop]: Abstraction has 38998 states and 54610 transitions. [2021-11-23 02:13:50,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 10.5) internal successors, (105), 11 states have internal predecessors, (105), 7 states have call successors, (51), 2 states have call predecessors, (51), 5 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-23 02:13:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 38998 states and 54610 transitions. [2021-11-23 02:13:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-23 02:13:50,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:50,966 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 02:13:50,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:13:51,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-23 02:13:51,168 INFO L402 AbstractCegarLoop]: === Iteration 41 === 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 37 more)] === [2021-11-23 02:13:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1932887348, now seen corresponding path program 1 times [2021-11-23 02:13:51,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:51,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817206024] [2021-11-23 02:13:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:51,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:51,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:13:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818727871] [2021-11-23 02:13:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:51,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:51,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:51,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:13:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:52,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 3941 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:13:52,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-11-23 02:13:52,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:13:52,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:52,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817206024] [2021-11-23 02:13:52,702 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:13:52,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818727871] [2021-11-23 02:13:52,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818727871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:52,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:52,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:13:52,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934265842] [2021-11-23 02:13:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:52,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:13:52,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:13:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:13:52,704 INFO L87 Difference]: Start difference. First operand 38998 states and 54610 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:13:55,163 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 02:14:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:03,463 INFO L93 Difference]: Finished difference Result 39148 states and 54718 transitions. [2021-11-23 02:14:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:14:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 281 [2021-11-23 02:14:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:03,597 INFO L225 Difference]: With dead ends: 39148 [2021-11-23 02:14:03,597 INFO L226 Difference]: Without dead ends: 39146 [2021-11-23 02:14:03,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 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 02:14:03,612 INFO L933 BasicCegarLoop]: 2507 mSDtfsCounter, 204 mSDsluCounter, 8343 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 9816 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:03,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 9816 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1398 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-23 02:14:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39146 states. [2021-11-23 02:14:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39146 to 39146. [2021-11-23 02:14:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39146 states, 22323 states have (on average 1.2298078215293644) internal successors, (27453), 23160 states have internal predecessors, (27453), 11953 states have call successors, (11953), 4389 states have call predecessors, (11953), 4853 states have return successors, (15297), 12090 states have call predecessors, (15297), 11949 states have call successors, (15297) [2021-11-23 02:14:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39146 states to 39146 states and 54703 transitions. [2021-11-23 02:14:07,730 INFO L78 Accepts]: Start accepts. Automaton has 39146 states and 54703 transitions. Word has length 281 [2021-11-23 02:14:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:07,731 INFO L470 AbstractCegarLoop]: Abstraction has 39146 states and 54703 transitions. [2021-11-23 02:14:07,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 02:14:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 39146 states and 54703 transitions. [2021-11-23 02:14:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-23 02:14:07,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:07,736 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:07,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_567c060c-0caa-4233-ac76-17c723d593ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-23 02:14:07,938 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_assert_linux_kernel_sched_completion__wait_without_initErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-23 02:14:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1975965100, now seen corresponding path program 1 times [2021-11-23 02:14:07,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:07,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879396955] [2021-11-23 02:14:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:07,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-23 02:14:08,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:08,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879396955] [2021-11-23 02:14:08,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879396955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:08,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:08,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:14:08,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890234507] [2021-11-23 02:14:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:08,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:14:08,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:14:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:14:08,232 INFO L87 Difference]: Start difference. First operand 39146 states and 54703 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-23 02:14:10,717 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 []