./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--usb--misc--iowarrior.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P --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 e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:51:15,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:51:15,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:51:15,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:51:15,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:51:15,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:51:15,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:51:15,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:51:15,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:51:15,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:51:15,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:51:15,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:51:15,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:51:15,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:51:15,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:51:15,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:51:15,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:51:15,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:51:15,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:51:15,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:51:15,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:51:15,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:51:15,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:51:15,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:51:15,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:51:15,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:51:15,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:51:15,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:51:15,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:51:15,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:51:15,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:51:15,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:51:15,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:51:15,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:51:15,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:51:15,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:51:15,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:51:15,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:51:15,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:51:15,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:51:15,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:51:15,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 22:51:15,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:51:15,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:51:15,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:51:15,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:51:15,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:51:15,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:51:15,704 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:51:15,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:51:15,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:51:15,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:51:15,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:51:15,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:51:15,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:51:15,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:51:15,705 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:51:15,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:51:15,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:51:15,706 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:51:15,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:51:15,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:51:15,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:51:15,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:51:15,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:51:15,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:51:15,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:51:15,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:51:15,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:51:15,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:51:15,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:51:15,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:15,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:51:15,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:51:15,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:51:15,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:51:15,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:51:15,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:51:15,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:51:15,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:51:15,711 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_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 [2021-11-20 22:51:15,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:51:15,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:51:15,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:51:15,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:51:15,963 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:51:15,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-20 22:51:16,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/data/b236efd96/4cba9581ede14cf39fc8f96ee5c68099/FLAG17d8aa42e [2021-11-20 22:51:16,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:51:16,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-20 22:51:16,917 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/data/b236efd96/4cba9581ede14cf39fc8f96ee5c68099/FLAG17d8aa42e [2021-11-20 22:51:17,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/data/b236efd96/4cba9581ede14cf39fc8f96ee5c68099 [2021-11-20 22:51:17,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:51:17,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:51:17,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:17,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:51:17,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:51:17,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:17" (1/1) ... [2021-11-20 22:51:17,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1988ca60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:17, skipping insertion in model container [2021-11-20 22:51:17,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:17" (1/1) ... [2021-11-20 22:51:17,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:51:17,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:51:20,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2021-11-20 22:51:20,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2021-11-20 22:51:20,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2021-11-20 22:51:20,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2021-11-20 22:51:20,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2021-11-20 22:51:20,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2021-11-20 22:51:20,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2021-11-20 22:51:20,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2021-11-20 22:51:20,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2021-11-20 22:51:20,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2021-11-20 22:51:20,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2021-11-20 22:51:20,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2021-11-20 22:51:20,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2021-11-20 22:51:20,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2021-11-20 22:51:20,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2021-11-20 22:51:20,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2021-11-20 22:51:20,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2021-11-20 22:51:20,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2021-11-20 22:51:20,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2021-11-20 22:51:20,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2021-11-20 22:51:20,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2021-11-20 22:51:20,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2021-11-20 22:51:20,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2021-11-20 22:51:20,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2021-11-20 22:51:20,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2021-11-20 22:51:20,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2021-11-20 22:51:20,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2021-11-20 22:51:20,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2021-11-20 22:51:20,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2021-11-20 22:51:20,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2021-11-20 22:51:20,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2021-11-20 22:51:20,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2021-11-20 22:51:20,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2021-11-20 22:51:20,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2021-11-20 22:51:20,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2021-11-20 22:51:20,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2021-11-20 22:51:20,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2021-11-20 22:51:20,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2021-11-20 22:51:20,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2021-11-20 22:51:20,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2021-11-20 22:51:20,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2021-11-20 22:51:20,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2021-11-20 22:51:20,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2021-11-20 22:51:20,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2021-11-20 22:51:20,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2021-11-20 22:51:20,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2021-11-20 22:51:20,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2021-11-20 22:51:20,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2021-11-20 22:51:20,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2021-11-20 22:51:20,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2021-11-20 22:51:20,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2021-11-20 22:51:20,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2021-11-20 22:51:20,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2021-11-20 22:51:20,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2021-11-20 22:51:20,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2021-11-20 22:51:20,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2021-11-20 22:51:20,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2021-11-20 22:51:20,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2021-11-20 22:51:20,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2021-11-20 22:51:20,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2021-11-20 22:51:20,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2021-11-20 22:51:20,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2021-11-20 22:51:20,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2021-11-20 22:51:20,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2021-11-20 22:51:20,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2021-11-20 22:51:20,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2021-11-20 22:51:20,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2021-11-20 22:51:20,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2021-11-20 22:51:20,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2021-11-20 22:51:20,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2021-11-20 22:51:20,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2021-11-20 22:51:20,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2021-11-20 22:51:20,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2021-11-20 22:51:20,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2021-11-20 22:51:20,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2021-11-20 22:51:20,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2021-11-20 22:51:20,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2021-11-20 22:51:20,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2021-11-20 22:51:20,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2021-11-20 22:51:20,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2021-11-20 22:51:20,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2021-11-20 22:51:20,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2021-11-20 22:51:20,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2021-11-20 22:51:20,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2021-11-20 22:51:20,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2021-11-20 22:51:20,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2021-11-20 22:51:20,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2021-11-20 22:51:20,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2021-11-20 22:51:20,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:20,494 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:51:20,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2021-11-20 22:51:20,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2021-11-20 22:51:20,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2021-11-20 22:51:20,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2021-11-20 22:51:20,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2021-11-20 22:51:20,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2021-11-20 22:51:20,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2021-11-20 22:51:20,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2021-11-20 22:51:20,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2021-11-20 22:51:20,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2021-11-20 22:51:20,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2021-11-20 22:51:20,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2021-11-20 22:51:20,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2021-11-20 22:51:20,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2021-11-20 22:51:20,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2021-11-20 22:51:20,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2021-11-20 22:51:20,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2021-11-20 22:51:20,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2021-11-20 22:51:20,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2021-11-20 22:51:20,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2021-11-20 22:51:20,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2021-11-20 22:51:20,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2021-11-20 22:51:20,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2021-11-20 22:51:20,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2021-11-20 22:51:20,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2021-11-20 22:51:20,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2021-11-20 22:51:20,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2021-11-20 22:51:20,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2021-11-20 22:51:20,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2021-11-20 22:51:20,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2021-11-20 22:51:20,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2021-11-20 22:51:20,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2021-11-20 22:51:20,799 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2021-11-20 22:51:20,799 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2021-11-20 22:51:20,799 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2021-11-20 22:51:20,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2021-11-20 22:51:20,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2021-11-20 22:51:20,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2021-11-20 22:51:20,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2021-11-20 22:51:20,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2021-11-20 22:51:20,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2021-11-20 22:51:20,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2021-11-20 22:51:20,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2021-11-20 22:51:20,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2021-11-20 22:51:20,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2021-11-20 22:51:20,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2021-11-20 22:51:20,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2021-11-20 22:51:20,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2021-11-20 22:51:20,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2021-11-20 22:51:20,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2021-11-20 22:51:20,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2021-11-20 22:51:20,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2021-11-20 22:51:20,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2021-11-20 22:51:20,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2021-11-20 22:51:20,814 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2021-11-20 22:51:20,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2021-11-20 22:51:20,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2021-11-20 22:51:20,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2021-11-20 22:51:20,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2021-11-20 22:51:20,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2021-11-20 22:51:20,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2021-11-20 22:51:20,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2021-11-20 22:51:20,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2021-11-20 22:51:20,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2021-11-20 22:51:20,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2021-11-20 22:51:20,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2021-11-20 22:51:20,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2021-11-20 22:51:20,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2021-11-20 22:51:20,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2021-11-20 22:51:20,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2021-11-20 22:51:20,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2021-11-20 22:51:20,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2021-11-20 22:51:20,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2021-11-20 22:51:20,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2021-11-20 22:51:20,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2021-11-20 22:51:20,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2021-11-20 22:51:20,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2021-11-20 22:51:20,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2021-11-20 22:51:20,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2021-11-20 22:51:20,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2021-11-20 22:51:20,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2021-11-20 22:51:20,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2021-11-20 22:51:20,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2021-11-20 22:51:20,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2021-11-20 22:51:20,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2021-11-20 22:51:20,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2021-11-20 22:51:20,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2021-11-20 22:51:20,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2021-11-20 22:51:20,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:51:21,019 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:51:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21 WrapperNode [2021-11-20 22:51:21,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:51:21,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:21,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:51:21,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:51:21,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,306 INFO L137 Inliner]: procedures = 544, calls = 1509, calls flagged for inlining = 233, calls inlined = 144, statements flattened = 2948 [2021-11-20 22:51:21,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:51:21,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:51:21,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:51:21,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:51:21,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:51:21,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:51:21,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:51:21,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:51:21,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (1/1) ... [2021-11-20 22:51:21,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:51:21,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:21,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:51:21,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:51:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 22:51:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 22:51:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-20 22:51:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-20 22:51:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 22:51:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 22:51:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-20 22:51:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-20 22:51:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 22:51:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 22:51:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-20 22:51:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-20 22:51:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-20 22:51:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-20 22:51:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-20 22:51:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-20 22:51:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-20 22:51:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-20 22:51:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2021-11-20 22:51:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2021-11-20 22:51:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2021-11-20 22:51:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2021-11-20 22:51:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 22:51:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 22:51:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 22:51:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 22:51:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-20 22:51:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-20 22:51:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:51:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 22:51:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 22:51:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-20 22:51:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-20 22:51:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 22:51:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 22:51:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 22:51:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 22:51:21,617 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 22:51:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 22:51:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-20 22:51:21,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-20 22:51:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 22:51:21,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 22:51:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-20 22:51:21,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-20 22:51:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:51:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-20 22:51:21,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-20 22:51:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-20 22:51:21,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-20 22:51:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 22:51:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 22:51:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-20 22:51:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-20 22:51:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-20 22:51:21,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-20 22:51:21,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 22:51:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 22:51:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-20 22:51:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-20 22:51:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-20 22:51:21,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-20 22:51:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 22:51:21,623 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 22:51:21,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-20 22:51:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-20 22:51:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 22:51:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:51:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 22:51:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 22:51:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 22:51:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-20 22:51:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-20 22:51:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 22:51:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 22:51:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-20 22:51:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-20 22:51:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-20 22:51:21,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-20 22:51:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-20 22:51:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-20 22:51:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 22:51:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 22:51:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-20 22:51:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-20 22:51:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-20 22:51:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-20 22:51:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:51:21,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:51:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2021-11-20 22:51:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2021-11-20 22:51:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-20 22:51:21,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-20 22:51:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 22:51:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 22:51:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 22:51:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_disconnect [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_disconnect [2021-11-20 22:51:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 22:51:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 22:51:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-20 22:51:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-20 22:51:21,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2021-11-20 22:51:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-20 22:51:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-20 22:51:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 22:51:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-20 22:51:21,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-20 22:51:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2021-11-20 22:51:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-20 22:51:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 22:51:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 22:51:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 22:51:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-20 22:51:21,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-20 22:51:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-20 22:51:21,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-20 22:51:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-20 22:51:21,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2021-11-20 22:51:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2021-11-20 22:51:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 22:51:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 22:51:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 22:51:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 22:51:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 22:51:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 22:51:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 22:51:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 22:51:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-20 22:51:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-20 22:51:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:51:22,274 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:51:22,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:51:22,376 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 22:51:24,627 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:51:25,050 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:51:25,050 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 22:51:25,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:25 BoogieIcfgContainer [2021-11-20 22:51:25,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:51:25,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:51:25,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:51:25,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:51:25,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:51:17" (1/3) ... [2021-11-20 22:51:25,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca97e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:25, skipping insertion in model container [2021-11-20 22:51:25,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:21" (2/3) ... [2021-11-20 22:51:25,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca97e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:25, skipping insertion in model container [2021-11-20 22:51:25,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:25" (3/3) ... [2021-11-20 22:51:25,067 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-20 22:51:25,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:51:25,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-20 22:51:25,171 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:51:25,181 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 [2021-11-20 22:51:25,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-20 22:51:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 499 states have (on average 1.3226452905811623) internal successors, (660), 547 states have internal predecessors, (660), 284 states have call successors, (284), 83 states have call predecessors, (284), 82 states have return successors, (279), 274 states have call predecessors, (279), 279 states have call successors, (279) [2021-11-20 22:51:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 22:51:25,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:25,248 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:25,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1467610978, now seen corresponding path program 1 times [2021-11-20 22:51:25,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:25,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83044848] [2021-11-20 22:51:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:25,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:25,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:25,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83044848] [2021-11-20 22:51:25,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83044848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:25,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:25,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:25,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603318858] [2021-11-20 22:51:25,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:25,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:25,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:25,965 INFO L87 Difference]: Start difference. First operand has 895 states, 499 states have (on average 1.3226452905811623) internal successors, (660), 547 states have internal predecessors, (660), 284 states have call successors, (284), 83 states have call predecessors, (284), 82 states have return successors, (279), 274 states have call predecessors, (279), 279 states have call successors, (279) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (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) [2021-11-20 22:51:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:27,036 INFO L93 Difference]: Finished difference Result 1751 states and 2484 transitions. [2021-11-20 22:51:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:27,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (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 51 [2021-11-20 22:51:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:27,060 INFO L225 Difference]: With dead ends: 1751 [2021-11-20 22:51:27,060 INFO L226 Difference]: Without dead ends: 880 [2021-11-20 22:51:27,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:27,073 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 1169 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:27,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 2094 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:51:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-20 22:51:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2021-11-20 22:51:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 492 states have (on average 1.2560975609756098) internal successors, (618), 535 states have internal predecessors, (618), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1174 transitions. [2021-11-20 22:51:27,240 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1174 transitions. Word has length 51 [2021-11-20 22:51:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:27,242 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1174 transitions. [2021-11-20 22:51:27,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (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) [2021-11-20 22:51:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1174 transitions. [2021-11-20 22:51:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 22:51:27,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:27,248 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:27,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:51:27,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1841791657, now seen corresponding path program 1 times [2021-11-20 22:51:27,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:27,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182109252] [2021-11-20 22:51:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:27,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:27,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:27,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182109252] [2021-11-20 22:51:27,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182109252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:27,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:27,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:27,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201034950] [2021-11-20 22:51:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:27,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:27,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:27,516 INFO L87 Difference]: Start difference. First operand 880 states and 1174 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (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) [2021-11-20 22:51:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:28,623 INFO L93 Difference]: Finished difference Result 880 states and 1174 transitions. [2021-11-20 22:51:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (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 56 [2021-11-20 22:51:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:28,636 INFO L225 Difference]: With dead ends: 880 [2021-11-20 22:51:28,636 INFO L226 Difference]: Without dead ends: 878 [2021-11-20 22:51:28,637 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 [2021-11-20 22:51:28,640 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 1149 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:28,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2058 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 22:51:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-20 22:51:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-11-20 22:51:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 491 states have (on average 1.2545824847250509) internal successors, (616), 533 states have internal predecessors, (616), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1172 transitions. [2021-11-20 22:51:28,713 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1172 transitions. Word has length 56 [2021-11-20 22:51:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:28,714 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1172 transitions. [2021-11-20 22:51:28,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (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) [2021-11-20 22:51:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1172 transitions. [2021-11-20 22:51:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 22:51:28,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:28,718 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:28,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:51:28,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 473081267, now seen corresponding path program 1 times [2021-11-20 22:51:28,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656618642] [2021-11-20 22:51:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:28,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:28,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:28,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656618642] [2021-11-20 22:51:28,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656618642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:28,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:28,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:28,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222307298] [2021-11-20 22:51:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:28,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:28,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:28,911 INFO L87 Difference]: Start difference. First operand 878 states and 1172 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (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) [2021-11-20 22:51:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:29,772 INFO L93 Difference]: Finished difference Result 878 states and 1172 transitions. [2021-11-20 22:51:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:29,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (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 61 [2021-11-20 22:51:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:29,780 INFO L225 Difference]: With dead ends: 878 [2021-11-20 22:51:29,780 INFO L226 Difference]: Without dead ends: 876 [2021-11-20 22:51:29,781 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 [2021-11-20 22:51:29,782 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 1146 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:29,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 2054 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:51:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-20 22:51:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2021-11-20 22:51:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 490 states have (on average 1.2530612244897958) internal successors, (614), 531 states have internal predecessors, (614), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1170 transitions. [2021-11-20 22:51:29,876 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1170 transitions. Word has length 61 [2021-11-20 22:51:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:29,880 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1170 transitions. [2021-11-20 22:51:29,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (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) [2021-11-20 22:51:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1170 transitions. [2021-11-20 22:51:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 22:51:29,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:29,882 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:29,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:51:29,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 37160990, now seen corresponding path program 1 times [2021-11-20 22:51:29,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:29,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327777803] [2021-11-20 22:51:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:29,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:30,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327777803] [2021-11-20 22:51:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327777803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:30,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:30,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:30,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813736288] [2021-11-20 22:51:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:30,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:30,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:30,008 INFO L87 Difference]: Start difference. First operand 876 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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) [2021-11-20 22:51:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:30,803 INFO L93 Difference]: Finished difference Result 876 states and 1170 transitions. [2021-11-20 22:51:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:30,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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 66 [2021-11-20 22:51:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:30,811 INFO L225 Difference]: With dead ends: 876 [2021-11-20 22:51:30,811 INFO L226 Difference]: Without dead ends: 874 [2021-11-20 22:51:30,812 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 [2021-11-20 22:51:30,813 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1143 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:30,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2050 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 22:51:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-20 22:51:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-11-20 22:51:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 489 states have (on average 1.2515337423312884) internal successors, (612), 529 states have internal predecessors, (612), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1168 transitions. [2021-11-20 22:51:30,874 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1168 transitions. Word has length 66 [2021-11-20 22:51:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:30,874 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1168 transitions. [2021-11-20 22:51:30,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (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) [2021-11-20 22:51:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1168 transitions. [2021-11-20 22:51:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 22:51:30,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:30,876 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:30,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 22:51:30,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1984902482, now seen corresponding path program 1 times [2021-11-20 22:51:30,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:30,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401110852] [2021-11-20 22:51:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:30,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:31,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:31,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401110852] [2021-11-20 22:51:31,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401110852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:31,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:31,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:31,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770759794] [2021-11-20 22:51:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:31,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:31,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:31,006 INFO L87 Difference]: Start difference. First operand 874 states and 1168 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (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) [2021-11-20 22:51:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:32,005 INFO L93 Difference]: Finished difference Result 874 states and 1168 transitions. [2021-11-20 22:51:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:32,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (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 71 [2021-11-20 22:51:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:32,014 INFO L225 Difference]: With dead ends: 874 [2021-11-20 22:51:32,014 INFO L226 Difference]: Without dead ends: 872 [2021-11-20 22:51:32,015 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 [2021-11-20 22:51:32,016 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 1140 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:32,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2046 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-20 22:51:32,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-11-20 22:51:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 488 states have (on average 1.25) internal successors, (610), 527 states have internal predecessors, (610), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1166 transitions. [2021-11-20 22:51:32,090 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1166 transitions. Word has length 71 [2021-11-20 22:51:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:32,091 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1166 transitions. [2021-11-20 22:51:32,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (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) [2021-11-20 22:51:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1166 transitions. [2021-11-20 22:51:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 22:51:32,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:32,093 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:32,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 22:51:32,094 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1288107428, now seen corresponding path program 1 times [2021-11-20 22:51:32,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:32,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788561099] [2021-11-20 22:51:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:32,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:32,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788561099] [2021-11-20 22:51:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788561099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:32,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833167682] [2021-11-20 22:51:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:32,234 INFO L87 Difference]: Start difference. First operand 872 states and 1166 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (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) [2021-11-20 22:51:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:33,128 INFO L93 Difference]: Finished difference Result 872 states and 1166 transitions. [2021-11-20 22:51:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:33,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (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 76 [2021-11-20 22:51:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:33,137 INFO L225 Difference]: With dead ends: 872 [2021-11-20 22:51:33,137 INFO L226 Difference]: Without dead ends: 870 [2021-11-20 22:51:33,138 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 [2021-11-20 22:51:33,140 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 1137 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:33,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 2042 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:51:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-20 22:51:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2021-11-20 22:51:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 487 states have (on average 1.2484599589322383) internal successors, (608), 525 states have internal predecessors, (608), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1164 transitions. [2021-11-20 22:51:33,208 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1164 transitions. Word has length 76 [2021-11-20 22:51:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:33,209 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1164 transitions. [2021-11-20 22:51:33,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (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) [2021-11-20 22:51:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1164 transitions. [2021-11-20 22:51:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 22:51:33,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:33,213 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:33,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 22:51:33,213 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1482170354, now seen corresponding path program 1 times [2021-11-20 22:51:33,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719695815] [2021-11-20 22:51:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:33,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:33,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:33,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719695815] [2021-11-20 22:51:33,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719695815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:33,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:33,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:33,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051943590] [2021-11-20 22:51:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:33,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:33,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:33,364 INFO L87 Difference]: Start difference. First operand 870 states and 1164 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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) [2021-11-20 22:51:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:34,242 INFO L93 Difference]: Finished difference Result 870 states and 1164 transitions. [2021-11-20 22:51:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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 81 [2021-11-20 22:51:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:34,250 INFO L225 Difference]: With dead ends: 870 [2021-11-20 22:51:34,251 INFO L226 Difference]: Without dead ends: 868 [2021-11-20 22:51:34,251 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 [2021-11-20 22:51:34,252 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1134 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:34,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 2038 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:51:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-20 22:51:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-11-20 22:51:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 523 states have internal predecessors, (606), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1162 transitions. [2021-11-20 22:51:34,341 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1162 transitions. Word has length 81 [2021-11-20 22:51:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:34,343 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1162 transitions. [2021-11-20 22:51:34,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (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) [2021-11-20 22:51:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1162 transitions. [2021-11-20 22:51:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 22:51:34,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:34,351 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 22:51:34,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 334242286, now seen corresponding path program 1 times [2021-11-20 22:51:34,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820780704] [2021-11-20 22:51:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:34,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:34,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:34,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820780704] [2021-11-20 22:51:34,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820780704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:34,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:34,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:34,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530467540] [2021-11-20 22:51:34,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:34,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:34,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:34,479 INFO L87 Difference]: Start difference. First operand 868 states and 1162 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 22:51:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:35,479 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2021-11-20 22:51:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:35,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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 86 [2021-11-20 22:51:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:35,486 INFO L225 Difference]: With dead ends: 868 [2021-11-20 22:51:35,487 INFO L226 Difference]: Without dead ends: 866 [2021-11-20 22:51:35,490 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 [2021-11-20 22:51:35,491 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 1135 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:35,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-20 22:51:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2021-11-20 22:51:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 485 states have (on average 1.245360824742268) internal successors, (604), 521 states have internal predecessors, (604), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1160 transitions. [2021-11-20 22:51:35,561 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1160 transitions. Word has length 86 [2021-11-20 22:51:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:35,561 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1160 transitions. [2021-11-20 22:51:35,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (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) [2021-11-20 22:51:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1160 transitions. [2021-11-20 22:51:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-20 22:51:35,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:35,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:35,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 22:51:35,565 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -915578671, now seen corresponding path program 1 times [2021-11-20 22:51:35,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681080010] [2021-11-20 22:51:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:35,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:35,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:35,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681080010] [2021-11-20 22:51:35,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681080010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:35,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:35,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:35,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182608488] [2021-11-20 22:51:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:35,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:35,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:35,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:35,699 INFO L87 Difference]: Start difference. First operand 866 states and 1160 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-20 22:51:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:36,427 INFO L93 Difference]: Finished difference Result 866 states and 1160 transitions. [2021-11-20 22:51:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:36,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 88 [2021-11-20 22:51:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:36,435 INFO L225 Difference]: With dead ends: 866 [2021-11-20 22:51:36,435 INFO L226 Difference]: Without dead ends: 864 [2021-11-20 22:51:36,436 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 [2021-11-20 22:51:36,437 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 1127 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:36,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 22:51:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-20 22:51:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-11-20 22:51:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 484 states have (on average 1.243801652892562) internal successors, (602), 519 states have internal predecessors, (602), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1158 transitions. [2021-11-20 22:51:36,521 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1158 transitions. Word has length 88 [2021-11-20 22:51:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:36,522 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 1158 transitions. [2021-11-20 22:51:36,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-20 22:51:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1158 transitions. [2021-11-20 22:51:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-20 22:51:36,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:36,524 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:36,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 22:51:36,525 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -484997293, now seen corresponding path program 1 times [2021-11-20 22:51:36,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:36,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499580176] [2021-11-20 22:51:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:36,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:36,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:36,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499580176] [2021-11-20 22:51:36,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499580176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:36,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:36,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:36,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056810523] [2021-11-20 22:51:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:36,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:36,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:36,645 INFO L87 Difference]: Start difference. First operand 864 states and 1158 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2021-11-20 22:51:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:37,491 INFO L93 Difference]: Finished difference Result 864 states and 1158 transitions. [2021-11-20 22:51:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 93 [2021-11-20 22:51:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:37,499 INFO L225 Difference]: With dead ends: 864 [2021-11-20 22:51:37,499 INFO L226 Difference]: Without dead ends: 862 [2021-11-20 22:51:37,500 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 [2021-11-20 22:51:37,501 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1126 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:37,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 2026 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:51:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-20 22:51:37,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-11-20 22:51:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 517 states have internal predecessors, (600), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-20 22:51:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1156 transitions. [2021-11-20 22:51:37,570 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1156 transitions. Word has length 93 [2021-11-20 22:51:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:37,571 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1156 transitions. [2021-11-20 22:51:37,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2021-11-20 22:51:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1156 transitions. [2021-11-20 22:51:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 22:51:37,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:37,573 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 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] [2021-11-20 22:51:37,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 22:51:37,574 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:37,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:37,574 INFO L85 PathProgramCache]: Analyzing trace with hash 20793332, now seen corresponding path program 1 times [2021-11-20 22:51:37,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:37,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771211601] [2021-11-20 22:51:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:37,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-20 22:51:37,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771211601] [2021-11-20 22:51:37,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771211601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:37,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:37,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:51:37,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970790073] [2021-11-20 22:51:37,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:37,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:51:37,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:51:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:37,730 INFO L87 Difference]: Start difference. First operand 862 states and 1156 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 22:51:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:38,814 INFO L93 Difference]: Finished difference Result 994 states and 1293 transitions. [2021-11-20 22:51:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:51:38,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-20 22:51:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:38,823 INFO L225 Difference]: With dead ends: 994 [2021-11-20 22:51:38,823 INFO L226 Difference]: Without dead ends: 992 [2021-11-20 22:51:38,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:51:38,825 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 1029 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:38,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3485 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-20 22:51:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 984. [2021-11-20 22:51:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 553 states have (on average 1.2314647377938517) internal successors, (681), 587 states have internal predecessors, (681), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1287 transitions. [2021-11-20 22:51:38,944 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1287 transitions. Word has length 117 [2021-11-20 22:51:38,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:38,948 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1287 transitions. [2021-11-20 22:51:38,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 22:51:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1287 transitions. [2021-11-20 22:51:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-20 22:51:38,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:38,951 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:38,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 22:51:38,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1592725701, now seen corresponding path program 1 times [2021-11-20 22:51:38,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407111281] [2021-11-20 22:51:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:38,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:39,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:39,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407111281] [2021-11-20 22:51:39,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407111281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:39,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:39,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:39,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656879845] [2021-11-20 22:51:39,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:39,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:39,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:39,101 INFO L87 Difference]: Start difference. First operand 984 states and 1287 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (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) [2021-11-20 22:51:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:40,102 INFO L93 Difference]: Finished difference Result 984 states and 1287 transitions. [2021-11-20 22:51:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (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 98 [2021-11-20 22:51:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:40,110 INFO L225 Difference]: With dead ends: 984 [2021-11-20 22:51:40,111 INFO L226 Difference]: Without dead ends: 982 [2021-11-20 22:51:40,112 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 [2021-11-20 22:51:40,112 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 1123 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:40,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-20 22:51:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2021-11-20 22:51:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 552 states have (on average 1.230072463768116) internal successors, (679), 585 states have internal predecessors, (679), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1285 transitions. [2021-11-20 22:51:40,196 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1285 transitions. Word has length 98 [2021-11-20 22:51:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:40,196 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1285 transitions. [2021-11-20 22:51:40,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (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) [2021-11-20 22:51:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1285 transitions. [2021-11-20 22:51:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 22:51:40,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:40,199 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-20 22:51:40,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 22:51:40,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:40,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1325805858, now seen corresponding path program 1 times [2021-11-20 22:51:40,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:40,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440390739] [2021-11-20 22:51:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:40,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-20 22:51:40,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:40,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440390739] [2021-11-20 22:51:40,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440390739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:40,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:40,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:51:40,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854621505] [2021-11-20 22:51:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:40,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:51:40,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:51:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:51:40,433 INFO L87 Difference]: Start difference. First operand 982 states and 1285 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 22:51:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:43,598 INFO L93 Difference]: Finished difference Result 982 states and 1285 transitions. [2021-11-20 22:51:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:51:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2021-11-20 22:51:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:43,607 INFO L225 Difference]: With dead ends: 982 [2021-11-20 22:51:43,607 INFO L226 Difference]: Without dead ends: 980 [2021-11-20 22:51:43,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 22:51:43,609 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 1114 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:43,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3483 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 22:51:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-11-20 22:51:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2021-11-20 22:51:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 551 states have (on average 1.2268602540834845) internal successors, (676), 583 states have internal predecessors, (676), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1282 transitions. [2021-11-20 22:51:43,702 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1282 transitions. Word has length 131 [2021-11-20 22:51:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:43,702 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1282 transitions. [2021-11-20 22:51:43,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 22:51:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1282 transitions. [2021-11-20 22:51:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 22:51:43,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:43,705 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:43,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 22:51:43,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1534470055, now seen corresponding path program 1 times [2021-11-20 22:51:43,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:43,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127611106] [2021-11-20 22:51:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:43,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:43,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127611106] [2021-11-20 22:51:43,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127611106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:43,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:43,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:43,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982159706] [2021-11-20 22:51:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:43,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:43,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:43,822 INFO L87 Difference]: Start difference. First operand 980 states and 1282 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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) [2021-11-20 22:51:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:44,665 INFO L93 Difference]: Finished difference Result 980 states and 1282 transitions. [2021-11-20 22:51:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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 103 [2021-11-20 22:51:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:44,674 INFO L225 Difference]: With dead ends: 980 [2021-11-20 22:51:44,675 INFO L226 Difference]: Without dead ends: 978 [2021-11-20 22:51:44,676 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 [2021-11-20 22:51:44,676 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1118 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:44,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2014 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 22:51:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-20 22:51:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 978. [2021-11-20 22:51:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 550 states have (on average 1.2254545454545454) internal successors, (674), 581 states have internal predecessors, (674), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1280 transitions. [2021-11-20 22:51:44,780 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1280 transitions. Word has length 103 [2021-11-20 22:51:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:44,780 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1280 transitions. [2021-11-20 22:51:44,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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) [2021-11-20 22:51:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1280 transitions. [2021-11-20 22:51:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 22:51:44,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:44,784 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:44,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 22:51:44,784 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2114427257, now seen corresponding path program 1 times [2021-11-20 22:51:44,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:44,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927143633] [2021-11-20 22:51:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:44,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-20 22:51:44,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927143633] [2021-11-20 22:51:44,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927143633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:44,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:44,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:44,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729088621] [2021-11-20 22:51:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:44,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:44,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:44,974 INFO L87 Difference]: Start difference. First operand 978 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 22:51:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:45,505 INFO L93 Difference]: Finished difference Result 1917 states and 2515 transitions. [2021-11-20 22:51:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:45,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2021-11-20 22:51:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:45,513 INFO L225 Difference]: With dead ends: 1917 [2021-11-20 22:51:45,514 INFO L226 Difference]: Without dead ends: 972 [2021-11-20 22:51:45,517 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 [2021-11-20 22:51:45,518 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 1110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:45,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 1003 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:51:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-20 22:51:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2021-11-20 22:51:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 545 states have (on average 1.2201834862385321) internal successors, (665), 575 states have internal predecessors, (665), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1271 transitions. [2021-11-20 22:51:45,606 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1271 transitions. Word has length 137 [2021-11-20 22:51:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:45,607 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1271 transitions. [2021-11-20 22:51:45,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 22:51:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1271 transitions. [2021-11-20 22:51:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 22:51:45,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:45,609 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:45,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 22:51:45,610 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1143372153, now seen corresponding path program 1 times [2021-11-20 22:51:45,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932717650] [2021-11-20 22:51:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:45,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:45,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:45,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932717650] [2021-11-20 22:51:45,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932717650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:45,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:45,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:45,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473231788] [2021-11-20 22:51:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:45,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:45,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:45,719 INFO L87 Difference]: Start difference. First operand 972 states and 1271 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2021-11-20 22:51:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:46,490 INFO L93 Difference]: Finished difference Result 972 states and 1271 transitions. [2021-11-20 22:51:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 108 [2021-11-20 22:51:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:46,498 INFO L225 Difference]: With dead ends: 972 [2021-11-20 22:51:46,498 INFO L226 Difference]: Without dead ends: 970 [2021-11-20 22:51:46,499 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 [2021-11-20 22:51:46,500 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1110 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:46,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 2000 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 22:51:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-20 22:51:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2021-11-20 22:51:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 544 states have (on average 1.21875) internal successors, (663), 573 states have internal predecessors, (663), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1269 transitions. [2021-11-20 22:51:46,590 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1269 transitions. Word has length 108 [2021-11-20 22:51:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:46,591 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1269 transitions. [2021-11-20 22:51:46,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2021-11-20 22:51:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1269 transitions. [2021-11-20 22:51:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 22:51:46,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:46,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:46,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 22:51:46,594 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1436582981, now seen corresponding path program 1 times [2021-11-20 22:51:46,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:46,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120940534] [2021-11-20 22:51:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:46,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:46,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:46,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120940534] [2021-11-20 22:51:46,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120940534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:46,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:46,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:46,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912473325] [2021-11-20 22:51:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:46,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:46,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:46,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:46,728 INFO L87 Difference]: Start difference. First operand 970 states and 1269 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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) [2021-11-20 22:51:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:47,715 INFO L93 Difference]: Finished difference Result 970 states and 1269 transitions. [2021-11-20 22:51:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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 113 [2021-11-20 22:51:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:47,725 INFO L225 Difference]: With dead ends: 970 [2021-11-20 22:51:47,726 INFO L226 Difference]: Without dead ends: 968 [2021-11-20 22:51:47,726 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 [2021-11-20 22:51:47,727 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 1107 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:47,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1996 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-20 22:51:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-11-20 22:51:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 543 states have (on average 1.2173112338858194) internal successors, (661), 571 states have internal predecessors, (661), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1267 transitions. [2021-11-20 22:51:47,830 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1267 transitions. Word has length 113 [2021-11-20 22:51:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:47,831 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1267 transitions. [2021-11-20 22:51:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (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) [2021-11-20 22:51:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1267 transitions. [2021-11-20 22:51:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 22:51:47,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:47,834 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:47,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 22:51:47,835 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -933895322, now seen corresponding path program 1 times [2021-11-20 22:51:47,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:47,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105382443] [2021-11-20 22:51:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:47,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-20 22:51:48,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105382443] [2021-11-20 22:51:48,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105382443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:48,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:51:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706703825] [2021-11-20 22:51:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:48,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:51:48,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:51:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:48,069 INFO L87 Difference]: Start difference. First operand 968 states and 1267 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 22:51:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:49,753 INFO L93 Difference]: Finished difference Result 978 states and 1274 transitions. [2021-11-20 22:51:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:51:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2021-11-20 22:51:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:49,762 INFO L225 Difference]: With dead ends: 978 [2021-11-20 22:51:49,762 INFO L226 Difference]: Without dead ends: 976 [2021-11-20 22:51:49,763 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 [2021-11-20 22:51:49,764 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 220 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:49,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 4024 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 22:51:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-20 22:51:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 972. [2021-11-20 22:51:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 546 states have (on average 1.216117216117216) internal successors, (664), 574 states have internal predecessors, (664), 304 states have call successors, (304), 110 states have call predecessors, (304), 109 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-20 22:51:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2021-11-20 22:51:49,896 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 138 [2021-11-20 22:51:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:49,897 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2021-11-20 22:51:49,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 22:51:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2021-11-20 22:51:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 22:51:49,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:49,900 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 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] [2021-11-20 22:51:49,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 22:51:49,901 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1126694543, now seen corresponding path program 1 times [2021-11-20 22:51:49,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:49,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722423271] [2021-11-20 22:51:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:49,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-20 22:51:50,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722423271] [2021-11-20 22:51:50,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722423271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:50,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:50,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:51:50,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646114122] [2021-11-20 22:51:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:50,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:51:50,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:50,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:51:50,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:50,072 INFO L87 Difference]: Start difference. First operand 972 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 22:51:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:51,682 INFO L93 Difference]: Finished difference Result 2011 states and 2685 transitions. [2021-11-20 22:51:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:51:51,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 138 [2021-11-20 22:51:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:51,692 INFO L225 Difference]: With dead ends: 2011 [2021-11-20 22:51:51,693 INFO L226 Difference]: Without dead ends: 1259 [2021-11-20 22:51:51,696 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 [2021-11-20 22:51:51,696 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 219 mSDsluCounter, 3735 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:51,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 4459 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 22:51:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-20 22:51:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 976. [2021-11-20 22:51:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 549 states have (on average 1.214936247723133) internal successors, (667), 577 states have internal predecessors, (667), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-20 22:51:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1274 transitions. [2021-11-20 22:51:51,802 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1274 transitions. Word has length 138 [2021-11-20 22:51:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:51,803 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1274 transitions. [2021-11-20 22:51:51,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-20 22:51:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1274 transitions. [2021-11-20 22:51:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 22:51:51,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:51,805 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:51,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 22:51:51,806 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2073252045, now seen corresponding path program 1 times [2021-11-20 22:51:51,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:51,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224305477] [2021-11-20 22:51:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:51,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:51,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:51,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224305477] [2021-11-20 22:51:51,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224305477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:51,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:51,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:51,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436830605] [2021-11-20 22:51:51,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:51,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:51,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:51,913 INFO L87 Difference]: Start difference. First operand 976 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (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) [2021-11-20 22:51:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:52,737 INFO L93 Difference]: Finished difference Result 976 states and 1274 transitions. [2021-11-20 22:51:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (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 118 [2021-11-20 22:51:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:52,745 INFO L225 Difference]: With dead ends: 976 [2021-11-20 22:51:52,745 INFO L226 Difference]: Without dead ends: 974 [2021-11-20 22:51:52,745 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 [2021-11-20 22:51:52,746 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 1104 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:52,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1992 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 22:51:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-11-20 22:51:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2021-11-20 22:51:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 548 states have (on average 1.2135036496350364) internal successors, (665), 575 states have internal predecessors, (665), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-20 22:51:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1272 transitions. [2021-11-20 22:51:52,848 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1272 transitions. Word has length 118 [2021-11-20 22:51:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:52,849 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1272 transitions. [2021-11-20 22:51:52,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (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) [2021-11-20 22:51:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1272 transitions. [2021-11-20 22:51:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 22:51:52,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:52,852 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:52,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 22:51:52,852 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash -588677465, now seen corresponding path program 1 times [2021-11-20 22:51:52,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:52,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808953125] [2021-11-20 22:51:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:52,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:52,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:52,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808953125] [2021-11-20 22:51:52,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808953125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:52,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:52,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:52,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576540719] [2021-11-20 22:51:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:52,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:52,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:52,957 INFO L87 Difference]: Start difference. First operand 974 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (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) [2021-11-20 22:51:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:53,673 INFO L93 Difference]: Finished difference Result 974 states and 1272 transitions. [2021-11-20 22:51:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (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 123 [2021-11-20 22:51:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:53,681 INFO L225 Difference]: With dead ends: 974 [2021-11-20 22:51:53,681 INFO L226 Difference]: Without dead ends: 972 [2021-11-20 22:51:53,682 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 [2021-11-20 22:51:53,682 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 1101 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:53,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1988 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 22:51:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-20 22:51:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2021-11-20 22:51:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 547 states have (on average 1.2120658135283364) internal successors, (663), 573 states have internal predecessors, (663), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-20 22:51:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2021-11-20 22:51:53,790 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 123 [2021-11-20 22:51:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:53,791 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2021-11-20 22:51:53,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (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) [2021-11-20 22:51:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2021-11-20 22:51:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-20 22:51:53,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:53,794 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:53,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 22:51:53,795 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash 676486989, now seen corresponding path program 1 times [2021-11-20 22:51:53,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:53,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509608725] [2021-11-20 22:51:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:53,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-20 22:51:53,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509608725] [2021-11-20 22:51:53,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509608725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:53,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:53,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:51:53,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219114222] [2021-11-20 22:51:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:53,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:51:53,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:51:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:53,953 INFO L87 Difference]: Start difference. First operand 972 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 22:51:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:55,653 INFO L93 Difference]: Finished difference Result 1016 states and 1310 transitions. [2021-11-20 22:51:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:51:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 151 [2021-11-20 22:51:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:55,661 INFO L225 Difference]: With dead ends: 1016 [2021-11-20 22:51:55,661 INFO L226 Difference]: Without dead ends: 1014 [2021-11-20 22:51:55,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:51:55,663 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1069 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:55,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 3042 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 22:51:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-20 22:51:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1010. [2021-11-20 22:51:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 572 states have (on average 1.2097902097902098) internal successors, (692), 598 states have internal predecessors, (692), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-20 22:51:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1305 transitions. [2021-11-20 22:51:55,776 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1305 transitions. Word has length 151 [2021-11-20 22:51:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:55,776 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1305 transitions. [2021-11-20 22:51:55,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 22:51:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1305 transitions. [2021-11-20 22:51:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 22:51:55,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:55,779 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:55,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 22:51:55,780 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1159027858, now seen corresponding path program 1 times [2021-11-20 22:51:55,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642482389] [2021-11-20 22:51:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:55,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:55,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:55,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642482389] [2021-11-20 22:51:55,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642482389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:55,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:55,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:55,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398523301] [2021-11-20 22:51:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:55,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:55,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:55,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:55,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:55,904 INFO L87 Difference]: Start difference. First operand 1010 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (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) [2021-11-20 22:51:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:57,023 INFO L93 Difference]: Finished difference Result 1010 states and 1305 transitions. [2021-11-20 22:51:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (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 128 [2021-11-20 22:51:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:57,029 INFO L225 Difference]: With dead ends: 1010 [2021-11-20 22:51:57,030 INFO L226 Difference]: Without dead ends: 1008 [2021-11-20 22:51:57,030 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 [2021-11-20 22:51:57,031 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 1098 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:57,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1984 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 22:51:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-20 22:51:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-20 22:51:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 571 states have (on average 1.2084063047285465) internal successors, (690), 596 states have internal predecessors, (690), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-20 22:51:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1303 transitions. [2021-11-20 22:51:57,186 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1303 transitions. Word has length 128 [2021-11-20 22:51:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:57,187 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1303 transitions. [2021-11-20 22:51:57,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (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) [2021-11-20 22:51:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1303 transitions. [2021-11-20 22:51:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-20 22:51:57,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:57,190 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:57,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 22:51:57,191 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -871463278, now seen corresponding path program 1 times [2021-11-20 22:51:57,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:57,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064046152] [2021-11-20 22:51:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:57,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-20 22:51:57,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064046152] [2021-11-20 22:51:57,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064046152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:57,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:57,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:57,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131766834] [2021-11-20 22:51:57,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:57,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:57,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:57,328 INFO L87 Difference]: Start difference. First operand 1008 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 22:51:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:57,839 INFO L93 Difference]: Finished difference Result 1915 states and 2456 transitions. [2021-11-20 22:51:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 160 [2021-11-20 22:51:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:57,848 INFO L225 Difference]: With dead ends: 1915 [2021-11-20 22:51:57,849 INFO L226 Difference]: Without dead ends: 1004 [2021-11-20 22:51:57,852 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 [2021-11-20 22:51:57,853 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:57,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 988 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:51:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-20 22:51:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-11-20 22:51:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 568 states have (on average 1.2059859154929577) internal successors, (685), 592 states have internal predecessors, (685), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-20 22:51:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1298 transitions. [2021-11-20 22:51:57,973 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1298 transitions. Word has length 160 [2021-11-20 22:51:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:57,974 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1298 transitions. [2021-11-20 22:51:57,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 22:51:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1298 transitions. [2021-11-20 22:51:57,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 22:51:57,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:57,977 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:57,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 22:51:57,977 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:57,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1328104122, now seen corresponding path program 1 times [2021-11-20 22:51:57,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:57,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260753829] [2021-11-20 22:51:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:57,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:51:58,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260753829] [2021-11-20 22:51:58,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260753829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:58,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:58,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:51:58,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564554836] [2021-11-20 22:51:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:58,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:58,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:58,086 INFO L87 Difference]: Start difference. First operand 1004 states and 1298 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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) [2021-11-20 22:51:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:59,203 INFO L93 Difference]: Finished difference Result 1004 states and 1298 transitions. [2021-11-20 22:51:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:59,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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 133 [2021-11-20 22:51:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:59,214 INFO L225 Difference]: With dead ends: 1004 [2021-11-20 22:51:59,215 INFO L226 Difference]: Without dead ends: 1002 [2021-11-20 22:51:59,215 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 [2021-11-20 22:51:59,216 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 1090 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:59,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 1970 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 22:51:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-20 22:51:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2021-11-20 22:51:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 567 states have (on average 1.2045855379188712) internal successors, (683), 590 states have internal predecessors, (683), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-20 22:51:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1296 transitions. [2021-11-20 22:51:59,339 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1296 transitions. Word has length 133 [2021-11-20 22:51:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:59,339 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1296 transitions. [2021-11-20 22:51:59,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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) [2021-11-20 22:51:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1296 transitions. [2021-11-20 22:51:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 22:51:59,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:59,343 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:59,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 22:51:59,343 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:51:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash -22576552, now seen corresponding path program 1 times [2021-11-20 22:51:59,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:59,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472109145] [2021-11-20 22:51:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:59,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-20 22:51:59,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:59,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472109145] [2021-11-20 22:51:59,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472109145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:51:59,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420560071] [2021-11-20 22:51:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:59,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:59,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:51:59,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:51:59,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:52:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:00,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 22:52:00,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-20 22:52:00,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:52:00,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420560071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:00,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:52:00,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-20 22:52:00,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213649946] [2021-11-20 22:52:00,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:00,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:52:00,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:52:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:52:00,403 INFO L87 Difference]: Start difference. First operand 1002 states and 1296 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 22:52:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:01,319 INFO L93 Difference]: Finished difference Result 1922 states and 2459 transitions. [2021-11-20 22:52:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:52:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 165 [2021-11-20 22:52:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:01,327 INFO L225 Difference]: With dead ends: 1922 [2021-11-20 22:52:01,328 INFO L226 Difference]: Without dead ends: 1020 [2021-11-20 22:52:01,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:52:01,331 INFO L933 BasicCegarLoop]: 993 mSDtfsCounter, 1034 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:01,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 1043 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:52:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-20 22:52:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018. [2021-11-20 22:52:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 574 states have (on average 1.1986062717770034) internal successors, (688), 597 states have internal predecessors, (688), 311 states have call successors, (311), 126 states have call predecessors, (311), 126 states have return successors, (310), 304 states have call predecessors, (310), 309 states have call successors, (310) [2021-11-20 22:52:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1309 transitions. [2021-11-20 22:52:01,478 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1309 transitions. Word has length 165 [2021-11-20 22:52:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:01,478 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1309 transitions. [2021-11-20 22:52:01,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-20 22:52:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1309 transitions. [2021-11-20 22:52:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 22:52:01,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:01,482 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:01,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:01,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 22:52:01,697 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1043076461, now seen corresponding path program 1 times [2021-11-20 22:52:01,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:01,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503945621] [2021-11-20 22:52:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:01,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:52:01,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:01,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503945621] [2021-11-20 22:52:01,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503945621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:01,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:01,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:52:01,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290433448] [2021-11-20 22:52:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:01,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:52:01,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:52:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:52:01,808 INFO L87 Difference]: Start difference. First operand 1018 states and 1309 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2021-11-20 22:52:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:03,096 INFO L93 Difference]: Finished difference Result 1742 states and 2203 transitions. [2021-11-20 22:52:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:52:03,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 138 [2021-11-20 22:52:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:03,109 INFO L225 Difference]: With dead ends: 1742 [2021-11-20 22:52:03,109 INFO L226 Difference]: Without dead ends: 1740 [2021-11-20 22:52:03,110 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 [2021-11-20 22:52:03,111 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 1024 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:03,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 2999 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 22:52:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-11-20 22:52:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1726. [2021-11-20 22:52:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 987 states have (on average 1.1995947315096251) internal successors, (1184), 1022 states have internal predecessors, (1184), 504 states have call successors, (504), 227 states have call predecessors, (504), 228 states have return successors, (504), 492 states have call predecessors, (504), 502 states have call successors, (504) [2021-11-20 22:52:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2192 transitions. [2021-11-20 22:52:03,349 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2192 transitions. Word has length 138 [2021-11-20 22:52:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:03,349 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 2192 transitions. [2021-11-20 22:52:03,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2021-11-20 22:52:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2192 transitions. [2021-11-20 22:52:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-20 22:52:03,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:03,353 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:03,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 22:52:03,353 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash -56762170, now seen corresponding path program 1 times [2021-11-20 22:52:03,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:03,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174677285] [2021-11-20 22:52:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:03,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:52:03,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:03,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174677285] [2021-11-20 22:52:03,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174677285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:03,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:03,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:52:03,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860537430] [2021-11-20 22:52:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:03,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:52:03,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:52:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:52:03,462 INFO L87 Difference]: Start difference. First operand 1726 states and 2192 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2021-11-20 22:52:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:04,597 INFO L93 Difference]: Finished difference Result 1726 states and 2192 transitions. [2021-11-20 22:52:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:52:04,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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 143 [2021-11-20 22:52:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:04,609 INFO L225 Difference]: With dead ends: 1726 [2021-11-20 22:52:04,609 INFO L226 Difference]: Without dead ends: 1724 [2021-11-20 22:52:04,610 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 [2021-11-20 22:52:04,611 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 1081 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:04,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1956 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 22:52:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-20 22:52:04,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2021-11-20 22:52:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 986 states have (on average 1.1977687626774849) internal successors, (1181), 1020 states have internal predecessors, (1181), 504 states have call successors, (504), 227 states have call predecessors, (504), 228 states have return successors, (504), 492 states have call predecessors, (504), 502 states have call successors, (504) [2021-11-20 22:52:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2189 transitions. [2021-11-20 22:52:04,851 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2189 transitions. Word has length 143 [2021-11-20 22:52:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:04,852 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 2189 transitions. [2021-11-20 22:52:04,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (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) [2021-11-20 22:52:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2189 transitions. [2021-11-20 22:52:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-20 22:52:04,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:04,855 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:04,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 22:52:04,855 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash 834206149, now seen corresponding path program 1 times [2021-11-20 22:52:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228543850] [2021-11-20 22:52:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:04,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 22:52:04,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:04,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228543850] [2021-11-20 22:52:04,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228543850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:04,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:04,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:52:04,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824536587] [2021-11-20 22:52:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:04,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:52:04,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:52:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:52:04,960 INFO L87 Difference]: Start difference. First operand 1724 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2021-11-20 22:52:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:06,094 INFO L93 Difference]: Finished difference Result 2564 states and 3254 transitions. [2021-11-20 22:52:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:52:06,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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 148 [2021-11-20 22:52:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:06,122 INFO L225 Difference]: With dead ends: 2564 [2021-11-20 22:52:06,123 INFO L226 Difference]: Without dead ends: 2436 [2021-11-20 22:52:06,128 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 [2021-11-20 22:52:06,132 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 932 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:06,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 3356 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:52:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-20 22:52:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2427. [2021-11-20 22:52:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1394 states have (on average 1.2037302725968435) internal successors, (1678), 1440 states have internal predecessors, (1678), 706 states have call successors, (706), 320 states have call predecessors, (706), 321 states have return successors, (711), 689 states have call predecessors, (711), 704 states have call successors, (711) [2021-11-20 22:52:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2021-11-20 22:52:06,423 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 148 [2021-11-20 22:52:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:06,423 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2021-11-20 22:52:06,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (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) [2021-11-20 22:52:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2021-11-20 22:52:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-20 22:52:06,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:06,426 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 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] [2021-11-20 22:52:06,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 22:52:06,426 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:06,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash -803822998, now seen corresponding path program 1 times [2021-11-20 22:52:06,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869517899] [2021-11-20 22:52:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:06,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-20 22:52:06,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:06,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869517899] [2021-11-20 22:52:06,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869517899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:06,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:06,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:52:06,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890701233] [2021-11-20 22:52:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:06,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:52:06,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:52:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:52:06,568 INFO L87 Difference]: Start difference. First operand 2427 states and 3095 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 22:52:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:08,326 INFO L93 Difference]: Finished difference Result 2648 states and 3276 transitions. [2021-11-20 22:52:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:52:08,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 166 [2021-11-20 22:52:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:08,335 INFO L225 Difference]: With dead ends: 2648 [2021-11-20 22:52:08,335 INFO L226 Difference]: Without dead ends: 2646 [2021-11-20 22:52:08,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:52:08,337 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 784 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:08,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 3391 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 22:52:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-11-20 22:52:08,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2642. [2021-11-20 22:52:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1515 states have (on average 1.186138613861386) internal successors, (1797), 1560 states have internal predecessors, (1797), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-20 22:52:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3262 transitions. [2021-11-20 22:52:08,654 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3262 transitions. Word has length 166 [2021-11-20 22:52:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:08,655 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 3262 transitions. [2021-11-20 22:52:08,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 22:52:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3262 transitions. [2021-11-20 22:52:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-20 22:52:08,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:08,657 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 22:52:08,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 22:52:08,658 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 850104435, now seen corresponding path program 1 times [2021-11-20 22:52:08,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:08,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377097720] [2021-11-20 22:52:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:08,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-20 22:52:08,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:08,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377097720] [2021-11-20 22:52:08,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377097720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:08,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:08,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:52:08,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316273597] [2021-11-20 22:52:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:08,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:52:08,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:52:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:52:08,820 INFO L87 Difference]: Start difference. First operand 2642 states and 3262 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 22:52:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:10,516 INFO L93 Difference]: Finished difference Result 2646 states and 3264 transitions. [2021-11-20 22:52:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:52:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 166 [2021-11-20 22:52:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:10,526 INFO L225 Difference]: With dead ends: 2646 [2021-11-20 22:52:10,526 INFO L226 Difference]: Without dead ends: 2644 [2021-11-20 22:52:10,528 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 [2021-11-20 22:52:10,529 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 45 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:10,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 3905 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 22:52:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-11-20 22:52:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2642. [2021-11-20 22:52:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1515 states have (on average 1.1808580858085809) internal successors, (1789), 1560 states have internal predecessors, (1789), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-20 22:52:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3254 transitions. [2021-11-20 22:52:10,836 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3254 transitions. Word has length 166 [2021-11-20 22:52:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:10,837 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 3254 transitions. [2021-11-20 22:52:10,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 22:52:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3254 transitions. [2021-11-20 22:52:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-20 22:52:10,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:10,840 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:10,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 22:52:10,841 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:10,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 286990509, now seen corresponding path program 1 times [2021-11-20 22:52:10,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:10,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379906413] [2021-11-20 22:52:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:10,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-20 22:52:11,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:11,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379906413] [2021-11-20 22:52:11,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379906413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:11,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:11,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 22:52:11,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470277442] [2021-11-20 22:52:11,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:11,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:52:11,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:11,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:52:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:52:11,041 INFO L87 Difference]: Start difference. First operand 2642 states and 3254 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-20 22:52:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:12,914 INFO L93 Difference]: Finished difference Result 2644 states and 3255 transitions. [2021-11-20 22:52:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:52:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 189 [2021-11-20 22:52:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:12,924 INFO L225 Difference]: With dead ends: 2644 [2021-11-20 22:52:12,924 INFO L226 Difference]: Without dead ends: 2642 [2021-11-20 22:52:12,926 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 [2021-11-20 22:52:12,926 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 390 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:12,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 3783 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 22:52:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-11-20 22:52:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2640. [2021-11-20 22:52:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1514 states have (on average 1.1756935270805813) internal successors, (1780), 1558 states have internal predecessors, (1780), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-20 22:52:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3245 transitions. [2021-11-20 22:52:13,223 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3245 transitions. Word has length 189 [2021-11-20 22:52:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3245 transitions. [2021-11-20 22:52:13,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-20 22:52:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3245 transitions. [2021-11-20 22:52:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-20 22:52:13,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:13,227 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 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] [2021-11-20 22:52:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 22:52:13,229 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1375440762, now seen corresponding path program 1 times [2021-11-20 22:52:13,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327750201] [2021-11-20 22:52:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:13,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-20 22:52:13,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:13,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327750201] [2021-11-20 22:52:13,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327750201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:13,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:13,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 22:52:13,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17820305] [2021-11-20 22:52:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:13,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 22:52:13,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 22:52:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 22:52:13,647 INFO L87 Difference]: Start difference. First operand 2640 states and 3245 transitions. Second operand has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-20 22:52:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:17,302 INFO L93 Difference]: Finished difference Result 5186 states and 6465 transitions. [2021-11-20 22:52:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 22:52:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 209 [2021-11-20 22:52:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:17,311 INFO L225 Difference]: With dead ends: 5186 [2021-11-20 22:52:17,312 INFO L226 Difference]: Without dead ends: 2971 [2021-11-20 22:52:17,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 22:52:17,319 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 69 mSDsluCounter, 9508 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:17,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 9454 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-20 22:52:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-11-20 22:52:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2658. [2021-11-20 22:52:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 1526 states have (on average 1.1743119266055047) internal successors, (1792), 1570 states have internal predecessors, (1792), 736 states have call successors, (736), 391 states have call predecessors, (736), 392 states have return successors, (741), 719 states have call predecessors, (741), 734 states have call successors, (741) [2021-11-20 22:52:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3269 transitions. [2021-11-20 22:52:17,624 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3269 transitions. Word has length 209 [2021-11-20 22:52:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:17,625 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3269 transitions. [2021-11-20 22:52:17,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-20 22:52:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3269 transitions. [2021-11-20 22:52:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-20 22:52:17,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:17,629 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-20 22:52:17,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 22:52:17,629 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:17,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1803912638, now seen corresponding path program 1 times [2021-11-20 22:52:17,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124477310] [2021-11-20 22:52:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:17,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-11-20 22:52:17,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:17,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124477310] [2021-11-20 22:52:17,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124477310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:17,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:17,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 22:52:17,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745391258] [2021-11-20 22:52:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:17,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 22:52:17,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 22:52:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 22:52:17,902 INFO L87 Difference]: Start difference. First operand 2658 states and 3269 transitions. Second operand has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-20 22:52:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:21,517 INFO L93 Difference]: Finished difference Result 5465 states and 7095 transitions. [2021-11-20 22:52:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 22:52:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) Word has length 231 [2021-11-20 22:52:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:21,529 INFO L225 Difference]: With dead ends: 5465 [2021-11-20 22:52:21,529 INFO L226 Difference]: Without dead ends: 3624 [2021-11-20 22:52:21,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:52:21,537 INFO L933 BasicCegarLoop]: 1495 mSDtfsCounter, 284 mSDsluCounter, 11287 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 11560 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:21,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 11560 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 22:52:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-11-20 22:52:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2666. [2021-11-20 22:52:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 1531 states have (on average 1.1737426518615284) internal successors, (1797), 1575 states have internal predecessors, (1797), 737 states have call successors, (737), 391 states have call predecessors, (737), 394 states have return successors, (745), 722 states have call predecessors, (745), 735 states have call successors, (745) [2021-11-20 22:52:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3279 transitions. [2021-11-20 22:52:21,898 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3279 transitions. Word has length 231 [2021-11-20 22:52:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:21,898 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3279 transitions. [2021-11-20 22:52:21,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-20 22:52:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3279 transitions. [2021-11-20 22:52:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-20 22:52:21,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:21,902 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-20 22:52:21,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 22:52:21,902 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:21,903 INFO L85 PathProgramCache]: Analyzing trace with hash -787386822, now seen corresponding path program 1 times [2021-11-20 22:52:21,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:21,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256868361] [2021-11-20 22:52:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:21,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:21,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 22:52:21,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261514172] [2021-11-20 22:52:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:21,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:21,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:21,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:21,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 22:52:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:22,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-20 22:52:22,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:23,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 22:52:24,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 22:52:24,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 22:52:24,866 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-20 22:52:24,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 131 [2021-11-20 22:52:25,084 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-20 22:52:25,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 109 [2021-11-20 22:52:25,099 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:52:25,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 97 [2021-11-20 22:52:33,009 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-20 22:52:33,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 75 [2021-11-20 22:52:33,021 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-20 22:52:33,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2021-11-20 22:52:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-20 22:52:33,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:52:33,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256868361] [2021-11-20 22:52:33,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 22:52:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261514172] [2021-11-20 22:52:33,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261514172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:33,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:33,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 22:52:33,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787027442] [2021-11-20 22:52:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:33,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 22:52:33,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 22:52:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=577, Unknown=1, NotChecked=0, Total=650 [2021-11-20 22:52:33,111 INFO L87 Difference]: Start difference. First operand 2666 states and 3279 transitions. Second operand has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-20 22:52:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:49,712 INFO L93 Difference]: Finished difference Result 4575 states and 5601 transitions. [2021-11-20 22:52:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 22:52:49,712 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) Word has length 248 [2021-11-20 22:52:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:49,730 INFO L225 Difference]: With dead ends: 4575 [2021-11-20 22:52:49,730 INFO L226 Difference]: Without dead ends: 2785 [2021-11-20 22:52:49,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 192 SyntacticMatches, 32 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=134, Invalid=1195, Unknown=3, NotChecked=0, Total=1332 [2021-11-20 22:52:49,737 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 225 mSDsluCounter, 12256 mSDsCounter, 0 mSdLazyCounter, 10598 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 11998 SdHoareTripleChecker+Invalid, 12053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 10598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1159 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:49,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 11998 Invalid, 12053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [296 Valid, 10598 Invalid, 0 Unknown, 1159 Unchecked, 11.9s Time] [2021-11-20 22:52:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-20 22:52:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2741. [2021-11-20 22:52:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1573 states have (on average 1.1697393515575334) internal successors, (1840), 1620 states have internal predecessors, (1840), 750 states have call successors, (750), 407 states have call predecessors, (750), 414 states have return successors, (763), 736 states have call predecessors, (763), 748 states have call successors, (763) [2021-11-20 22:52:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3353 transitions. [2021-11-20 22:52:50,078 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3353 transitions. Word has length 248 [2021-11-20 22:52:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:50,078 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3353 transitions. [2021-11-20 22:52:50,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-20 22:52:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3353 transitions. [2021-11-20 22:52:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-20 22:52:50,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:50,082 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:50,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:50,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-20 22:52:50,297 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:52:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1047232639, now seen corresponding path program 1 times [2021-11-20 22:52:50,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:50,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777072076] [2021-11-20 22:52:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:50,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:50,388 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 22:52:50,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900031377] [2021-11-20 22:52:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:50,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:50,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:50,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 22:52:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-20 22:52:51,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:51,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 22:52:52,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 22:52:52,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 22:52:52,936 INFO L354 Elim1Store]: treesize reduction 590, result has 6.9 percent of original size [2021-11-20 22:52:52,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 141 treesize of output 141 [2021-11-20 22:52:53,119 INFO L354 Elim1Store]: treesize reduction 290, result has 13.2 percent of original size [2021-11-20 22:52:53,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 138 treesize of output 134 [2021-11-20 22:52:53,281 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-20 22:52:53,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 109 [2021-11-20 22:52:53,305 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:52:53,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 97 [2021-11-20 22:52:59,028 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-20 22:52:59,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 75 [2021-11-20 22:52:59,035 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-20 22:52:59,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2021-11-20 22:52:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-20 22:52:59,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:52:59,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777072076] [2021-11-20 22:52:59,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 22:52:59,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900031377] [2021-11-20 22:52:59,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900031377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:59,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:59,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-20 22:52:59,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258767780] [2021-11-20 22:52:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:59,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 22:52:59,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 22:52:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2021-11-20 22:52:59,111 INFO L87 Difference]: Start difference. First operand 2741 states and 3353 transitions. Second operand has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) [2021-11-20 22:53:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:12,398 INFO L93 Difference]: Finished difference Result 4641 states and 5664 transitions. [2021-11-20 22:53:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 22:53:12,398 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) Word has length 258 [2021-11-20 22:53:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:12,407 INFO L225 Difference]: With dead ends: 4641 [2021-11-20 22:53:12,408 INFO L226 Difference]: Without dead ends: 2833 [2021-11-20 22:53:12,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 198 SyntacticMatches, 36 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=128, Invalid=1128, Unknown=4, NotChecked=0, Total=1260 [2021-11-20 22:53:12,414 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 225 mSDsluCounter, 10363 mSDsCounter, 0 mSdLazyCounter, 8780 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 10122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 8780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1049 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:12,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 10344 Invalid, 10122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 8780 Invalid, 0 Unknown, 1049 Unchecked, 8.7s Time] [2021-11-20 22:53:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-11-20 22:53:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2750. [2021-11-20 22:53:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 1578 states have (on average 1.1692015209125475) internal successors, (1845), 1625 states have internal predecessors, (1845), 752 states have call successors, (752), 409 states have call predecessors, (752), 416 states have return successors, (765), 738 states have call predecessors, (765), 750 states have call successors, (765) [2021-11-20 22:53:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3362 transitions. [2021-11-20 22:53:12,866 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3362 transitions. Word has length 258 [2021-11-20 22:53:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:12,867 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 3362 transitions. [2021-11-20 22:53:12,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) [2021-11-20 22:53:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3362 transitions. [2021-11-20 22:53:12,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-20 22:53:12,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:12,873 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-20 22:53:12,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 22:53:13,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:13,098 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-20 22:53:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1427468920, now seen corresponding path program 1 times [2021-11-20 22:53:13,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:13,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099470487] [2021-11-20 22:53:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:13,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:13,209 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 22:53:13,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650726755] [2021-11-20 22:53:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:13,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:53:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:53:13,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:53:13,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d14de60-32e3-484a-9914-dd54c7e63c40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 22:53:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:14,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 22:53:14,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:53:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-20 22:53:14,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:53:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-11-20 22:53:15,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:15,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099470487] [2021-11-20 22:53:15,556 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 22:53:15,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650726755] [2021-11-20 22:53:15,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650726755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:53:15,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589534634] [2021-11-20 22:53:15,604 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2021-11-20 22:53:15,605 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:53:15,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:53:15,615 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:53:15,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:53:19,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:19,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:20,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:22,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:23,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:24,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:27,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:29,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:30,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:30,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:33,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:34,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-20 22:53:36,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31