./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/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_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:40:56,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:40:56,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:40:56,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:40:56,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:40:56,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:40:56,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:40:56,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:40:56,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:40:56,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:40:56,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:40:56,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:40:56,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:40:56,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:40:56,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:40:56,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:40:56,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:40:56,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:40:56,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:40:56,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:40:56,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:40:56,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:40:56,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:40:56,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:40:56,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:40:56,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:40:56,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:40:56,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:40:56,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:40:56,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:40:56,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:40:56,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:40:56,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:40:56,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:40:56,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:40:56,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:40:56,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:40:56,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:40:56,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:40:56,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:40:56,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:40:56,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:40:56,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:40:56,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:40:56,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:40:56,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:40:56,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:40:56,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:40:56,698 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:40:56,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:40:56,699 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:40:56,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:40:56,700 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:40:56,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:40:56,700 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:40:56,701 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:40:56,701 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:40:56,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:40:56,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:40:56,701 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:40:56,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:40:56,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:40:56,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:40:56,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:40:56,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:40:56,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:40:56,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:40:56,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:40:56,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:40:56,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:40:56,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:40:56,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:40:56,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:40:56,705 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:40:56,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:40:56,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:40:56,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:40:56,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:40:56,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:40:56,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:40:56,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 [2022-11-03 03:40:57,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:40:57,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:40:57,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:40:57,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:40:57,062 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:40:57,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:40:57,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/c13d3b273/2abc52c881df47a5be06620b19784be4/FLAGaa1185053 [2022-11-03 03:40:57,937 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:40:57,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:40:58,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/c13d3b273/2abc52c881df47a5be06620b19784be4/FLAGaa1185053 [2022-11-03 03:40:58,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/c13d3b273/2abc52c881df47a5be06620b19784be4 [2022-11-03 03:40:58,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:40:58,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:40:58,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:40:58,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:40:58,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:40:58,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:58" (1/1) ... [2022-11-03 03:40:58,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42de2b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:58, skipping insertion in model container [2022-11-03 03:40:58,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:58" (1/1) ... [2022-11-03 03:40:58,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:40:58,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:41:01,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2022-11-03 03:41:01,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2022-11-03 03:41:01,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2022-11-03 03:41:01,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2022-11-03 03:41:01,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2022-11-03 03:41:01,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2022-11-03 03:41:01,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2022-11-03 03:41:01,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2022-11-03 03:41:01,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2022-11-03 03:41:01,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2022-11-03 03:41:01,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2022-11-03 03:41:01,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2022-11-03 03:41:01,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2022-11-03 03:41:01,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2022-11-03 03:41:01,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2022-11-03 03:41:01,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2022-11-03 03:41:01,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2022-11-03 03:41:01,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2022-11-03 03:41:01,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2022-11-03 03:41:01,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2022-11-03 03:41:01,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2022-11-03 03:41:01,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2022-11-03 03:41:01,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2022-11-03 03:41:01,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2022-11-03 03:41:01,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2022-11-03 03:41:01,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2022-11-03 03:41:01,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2022-11-03 03:41:01,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2022-11-03 03:41:01,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2022-11-03 03:41:01,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2022-11-03 03:41:01,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2022-11-03 03:41:01,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2022-11-03 03:41:01,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2022-11-03 03:41:01,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2022-11-03 03:41:01,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2022-11-03 03:41:01,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2022-11-03 03:41:01,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2022-11-03 03:41:01,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2022-11-03 03:41:01,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2022-11-03 03:41:01,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2022-11-03 03:41:01,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2022-11-03 03:41:01,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2022-11-03 03:41:01,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2022-11-03 03:41:01,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2022-11-03 03:41:01,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2022-11-03 03:41:01,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2022-11-03 03:41:01,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2022-11-03 03:41:01,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2022-11-03 03:41:01,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2022-11-03 03:41:01,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2022-11-03 03:41:01,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2022-11-03 03:41:01,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2022-11-03 03:41:01,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2022-11-03 03:41:01,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2022-11-03 03:41:01,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2022-11-03 03:41:01,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2022-11-03 03:41:01,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2022-11-03 03:41:01,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2022-11-03 03:41:01,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2022-11-03 03:41:01,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2022-11-03 03:41:01,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2022-11-03 03:41:01,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2022-11-03 03:41:01,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2022-11-03 03:41:01,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2022-11-03 03:41:01,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2022-11-03 03:41:01,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2022-11-03 03:41:01,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2022-11-03 03:41:01,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2022-11-03 03:41:01,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2022-11-03 03:41:01,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2022-11-03 03:41:01,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2022-11-03 03:41:01,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2022-11-03 03:41:01,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2022-11-03 03:41:01,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2022-11-03 03:41:01,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2022-11-03 03:41:01,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2022-11-03 03:41:01,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2022-11-03 03:41:01,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2022-11-03 03:41:01,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2022-11-03 03:41:01,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2022-11-03 03:41:01,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2022-11-03 03:41:01,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2022-11-03 03:41:01,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2022-11-03 03:41:01,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2022-11-03 03:41:01,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2022-11-03 03:41:01,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2022-11-03 03:41:01,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2022-11-03 03:41:01,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2022-11-03 03:41:01,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:01,404 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:41:01,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2022-11-03 03:41:01,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2022-11-03 03:41:01,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2022-11-03 03:41:01,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2022-11-03 03:41:01,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2022-11-03 03:41:01,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2022-11-03 03:41:01,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2022-11-03 03:41:01,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2022-11-03 03:41:01,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2022-11-03 03:41:01,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2022-11-03 03:41:01,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2022-11-03 03:41:01,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2022-11-03 03:41:01,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2022-11-03 03:41:01,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2022-11-03 03:41:01,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2022-11-03 03:41:01,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2022-11-03 03:41:01,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2022-11-03 03:41:01,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2022-11-03 03:41:01,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2022-11-03 03:41:01,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2022-11-03 03:41:01,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2022-11-03 03:41:01,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2022-11-03 03:41:01,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2022-11-03 03:41:01,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2022-11-03 03:41:01,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2022-11-03 03:41:01,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2022-11-03 03:41:01,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2022-11-03 03:41:01,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2022-11-03 03:41:01,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2022-11-03 03:41:01,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2022-11-03 03:41:01,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2022-11-03 03:41:01,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2022-11-03 03:41:01,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2022-11-03 03:41:01,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2022-11-03 03:41:01,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2022-11-03 03:41:01,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2022-11-03 03:41:01,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2022-11-03 03:41:01,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2022-11-03 03:41:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2022-11-03 03:41:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2022-11-03 03:41:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2022-11-03 03:41:01,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2022-11-03 03:41:01,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2022-11-03 03:41:01,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2022-11-03 03:41:01,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2022-11-03 03:41:01,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2022-11-03 03:41:01,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2022-11-03 03:41:01,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2022-11-03 03:41:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2022-11-03 03:41:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2022-11-03 03:41:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2022-11-03 03:41:01,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2022-11-03 03:41:01,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2022-11-03 03:41:01,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2022-11-03 03:41:01,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2022-11-03 03:41:01,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2022-11-03 03:41:01,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2022-11-03 03:41:01,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2022-11-03 03:41:01,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2022-11-03 03:41:01,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2022-11-03 03:41:01,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2022-11-03 03:41:01,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2022-11-03 03:41:01,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2022-11-03 03:41:01,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2022-11-03 03:41:01,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2022-11-03 03:41:01,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2022-11-03 03:41:01,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2022-11-03 03:41:01,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2022-11-03 03:41:01,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2022-11-03 03:41:01,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2022-11-03 03:41:01,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2022-11-03 03:41:01,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2022-11-03 03:41:01,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2022-11-03 03:41:01,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2022-11-03 03:41:01,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2022-11-03 03:41:01,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2022-11-03 03:41:01,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2022-11-03 03:41:01,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2022-11-03 03:41:01,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2022-11-03 03:41:01,724 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2022-11-03 03:41:01,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2022-11-03 03:41:01,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2022-11-03 03:41:01,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2022-11-03 03:41:01,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2022-11-03 03:41:01,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2022-11-03 03:41:01,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2022-11-03 03:41:01,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2022-11-03 03:41:01,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2022-11-03 03:41:01,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:01,894 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:41:01,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01 WrapperNode [2022-11-03 03:41:01,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:41:01,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:01,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:41:01,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:41:01,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:01,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,170 INFO L138 Inliner]: procedures = 544, calls = 1509, calls flagged for inlining = 233, calls inlined = 144, statements flattened = 2948 [2022-11-03 03:41:02,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:02,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:41:02,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:41:02,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:41:02,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:41:02,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:41:02,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:41:02,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:41:02,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (1/1) ... [2022-11-03 03:41:02,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:41:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:02,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:41:02,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:41:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 03:41:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 03:41:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:41:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:41:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:41:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:41:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 03:41:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 03:41:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:41:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:41:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:41:02,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:41:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 03:41:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 03:41:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:41:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:41:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:41:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:41:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2022-11-03 03:41:02,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2022-11-03 03:41:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2022-11-03 03:41:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2022-11-03 03:41:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:41:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:41:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:41:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:41:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:41:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:41:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:41:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:41:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:41:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:41:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:41:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:41:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:41:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:41:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:41:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:41:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:41:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-03 03:41:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-03 03:41:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:41:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:41:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:41:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:41:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:41:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:41:02,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:41:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-03 03:41:02,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-03 03:41:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:41:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:41:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:41:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:41:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:41:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:41:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:41:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:41:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 03:41:02,490 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 03:41:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:41:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:41:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:41:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:41:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:41:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:41:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 03:41:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 03:41:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:41:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:41:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:41:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:41:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2022-11-03 03:41:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2022-11-03 03:41:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:41:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:41:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:41:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:41:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 03:41:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 03:41:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:41:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:41:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:41:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:41:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2022-11-03 03:41:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2022-11-03 03:41:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:41:02,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:41:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:41:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:41:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:41:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:41:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_disconnect [2022-11-03 03:41:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_disconnect [2022-11-03 03:41:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:41:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:41:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:41:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:41:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:41:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:41:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2022-11-03 03:41:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2022-11-03 03:41:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2022-11-03 03:41:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2022-11-03 03:41:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-03 03:41:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-03 03:41:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:41:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:41:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:41:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:41:02,506 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:41:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:41:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:41:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:41:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2022-11-03 03:41:02,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2022-11-03 03:41:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2022-11-03 03:41:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2022-11-03 03:41:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:41:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:41:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:41:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:41:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:41:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:41:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:41:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 03:41:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 03:41:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2022-11-03 03:41:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2022-11-03 03:41:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:41:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:41:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:41:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:41:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2022-11-03 03:41:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2022-11-03 03:41:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2022-11-03 03:41:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2022-11-03 03:41:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2022-11-03 03:41:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2022-11-03 03:41:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:41:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:41:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2022-11-03 03:41:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2022-11-03 03:41:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:41:02,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:41:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:41:02,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:41:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:41:02,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:41:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:41:02,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:41:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 03:41:02,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 03:41:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:41:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:41:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:41:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:41:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:41:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:41:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:41:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:41:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:41:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:41:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:41:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2022-11-03 03:41:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2022-11-03 03:41:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:41:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:41:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 03:41:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 03:41:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:41:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:41:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:41:02,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:41:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:41:02,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:41:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:41:03,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:41:03,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:41:03,422 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:41:05,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:41:06,189 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:41:06,189 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:41:06,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:06 BoogieIcfgContainer [2022-11-03 03:41:06,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:41:06,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:41:06,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:41:06,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:41:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:58" (1/3) ... [2022-11-03 03:41:06,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7338e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:06, skipping insertion in model container [2022-11-03 03:41:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:01" (2/3) ... [2022-11-03 03:41:06,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7338e25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:41:06, skipping insertion in model container [2022-11-03 03:41:06,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:41:06" (3/3) ... [2022-11-03 03:41:06,207 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:41:06,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:41:06,228 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2022-11-03 03:41:06,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:41:06,339 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b1188c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:41:06,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-03 03:41:06,351 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) [2022-11-03 03:41:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:41:06,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:06,364 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:06,366 INFO L420 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)] === [2022-11-03 03:41:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1467610978, now seen corresponding path program 1 times [2022-11-03 03:41:06,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:06,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555651267] [2022-11-03 03:41:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:06,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:07,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:07,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555651267] [2022-11-03 03:41:07,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555651267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:07,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:07,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:07,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82265186] [2022-11-03 03:41:07,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:07,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:07,424 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) [2022-11-03 03:41:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:08,605 INFO L93 Difference]: Finished difference Result 1751 states and 2484 transitions. [2022-11-03 03:41:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:08,607 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 [2022-11-03 03:41:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:08,639 INFO L225 Difference]: With dead ends: 1751 [2022-11-03 03:41:08,639 INFO L226 Difference]: Without dead ends: 880 [2022-11-03 03:41:08,650 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:08,656 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 1169 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:08,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 2094 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-03 03:41:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-11-03 03:41:08,829 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) [2022-11-03 03:41:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1174 transitions. [2022-11-03 03:41:08,840 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1174 transitions. Word has length 51 [2022-11-03 03:41:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:08,842 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1174 transitions. [2022-11-03 03:41:08,842 INFO L496 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) [2022-11-03 03:41:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1174 transitions. [2022-11-03 03:41:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 03:41:08,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:08,845 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:08,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:41:08,846 INFO L420 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)] === [2022-11-03 03:41:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1841791657, now seen corresponding path program 1 times [2022-11-03 03:41:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:08,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626394071] [2022-11-03 03:41:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:09,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:09,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626394071] [2022-11-03 03:41:09,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626394071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:09,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:09,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950650409] [2022-11-03 03:41:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:09,284 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) [2022-11-03 03:41:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:10,337 INFO L93 Difference]: Finished difference Result 880 states and 1174 transitions. [2022-11-03 03:41:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:10,338 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 [2022-11-03 03:41:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:10,348 INFO L225 Difference]: With dead ends: 880 [2022-11-03 03:41:10,348 INFO L226 Difference]: Without dead ends: 878 [2022-11-03 03:41:10,349 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:10,352 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1149 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:10,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2058 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-03 03:41:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-11-03 03:41:10,442 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) [2022-11-03 03:41:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1172 transitions. [2022-11-03 03:41:10,450 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1172 transitions. Word has length 56 [2022-11-03 03:41:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:10,451 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1172 transitions. [2022-11-03 03:41:10,451 INFO L496 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) [2022-11-03 03:41:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1172 transitions. [2022-11-03 03:41:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 03:41:10,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:10,461 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:10,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:41:10,462 INFO L420 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)] === [2022-11-03 03:41:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 473081267, now seen corresponding path program 1 times [2022-11-03 03:41:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:10,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146538320] [2022-11-03 03:41:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:10,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:10,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146538320] [2022-11-03 03:41:10,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146538320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:10,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:10,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:10,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140343331] [2022-11-03 03:41:10,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:10,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:10,873 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) [2022-11-03 03:41:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:12,112 INFO L93 Difference]: Finished difference Result 878 states and 1172 transitions. [2022-11-03 03:41:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:12,113 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 [2022-11-03 03:41:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:12,118 INFO L225 Difference]: With dead ends: 878 [2022-11-03 03:41:12,118 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 03:41:12,119 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:12,119 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 1146 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:12,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 2054 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:41:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 03:41:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-11-03 03:41:12,174 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) [2022-11-03 03:41:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1170 transitions. [2022-11-03 03:41:12,180 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1170 transitions. Word has length 61 [2022-11-03 03:41:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1170 transitions. [2022-11-03 03:41:12,181 INFO L496 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) [2022-11-03 03:41:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1170 transitions. [2022-11-03 03:41:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 03:41:12,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:12,183 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:41:12,183 INFO L420 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)] === [2022-11-03 03:41:12,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 37160990, now seen corresponding path program 1 times [2022-11-03 03:41:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:12,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699497719] [2022-11-03 03:41:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:12,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699497719] [2022-11-03 03:41:12,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699497719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:12,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:12,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845836264] [2022-11-03 03:41:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:12,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:12,512 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) [2022-11-03 03:41:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:13,540 INFO L93 Difference]: Finished difference Result 876 states and 1170 transitions. [2022-11-03 03:41:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:13,540 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 [2022-11-03 03:41:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:13,545 INFO L225 Difference]: With dead ends: 876 [2022-11-03 03:41:13,545 INFO L226 Difference]: Without dead ends: 874 [2022-11-03 03:41:13,546 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:13,547 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1143 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:13,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 2050 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-11-03 03:41:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2022-11-03 03:41:13,602 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) [2022-11-03 03:41:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1168 transitions. [2022-11-03 03:41:13,608 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1168 transitions. Word has length 66 [2022-11-03 03:41:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1168 transitions. [2022-11-03 03:41:13,609 INFO L496 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) [2022-11-03 03:41:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1168 transitions. [2022-11-03 03:41:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:41:13,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:13,610 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:41:13,611 INFO L420 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)] === [2022-11-03 03:41:13,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:13,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1984902482, now seen corresponding path program 1 times [2022-11-03 03:41:13,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:13,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115539530] [2022-11-03 03:41:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:13,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:13,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115539530] [2022-11-03 03:41:13,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115539530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:13,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:13,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:13,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491930968] [2022-11-03 03:41:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:13,924 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) [2022-11-03 03:41:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:14,751 INFO L93 Difference]: Finished difference Result 874 states and 1168 transitions. [2022-11-03 03:41:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:14,751 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 [2022-11-03 03:41:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:14,760 INFO L225 Difference]: With dead ends: 874 [2022-11-03 03:41:14,760 INFO L226 Difference]: Without dead ends: 872 [2022-11-03 03:41:14,761 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:14,762 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1140 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:14,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 2046 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-03 03:41:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-11-03 03:41:14,856 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) [2022-11-03 03:41:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1166 transitions. [2022-11-03 03:41:14,863 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1166 transitions. Word has length 71 [2022-11-03 03:41:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:14,864 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1166 transitions. [2022-11-03 03:41:14,864 INFO L496 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) [2022-11-03 03:41:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1166 transitions. [2022-11-03 03:41:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 03:41:14,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:14,866 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:14,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:41:14,866 INFO L420 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)] === [2022-11-03 03:41:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1288107428, now seen corresponding path program 1 times [2022-11-03 03:41:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:14,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657396753] [2022-11-03 03:41:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:15,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657396753] [2022-11-03 03:41:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657396753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:15,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927900067] [2022-11-03 03:41:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:15,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:15,213 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) [2022-11-03 03:41:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:16,271 INFO L93 Difference]: Finished difference Result 872 states and 1166 transitions. [2022-11-03 03:41:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:16,272 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 [2022-11-03 03:41:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:16,276 INFO L225 Difference]: With dead ends: 872 [2022-11-03 03:41:16,276 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 03:41:16,277 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:16,278 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 1137 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:16,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2042 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:41:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 03:41:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2022-11-03 03:41:16,367 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) [2022-11-03 03:41:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1164 transitions. [2022-11-03 03:41:16,373 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1164 transitions. Word has length 76 [2022-11-03 03:41:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:16,374 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1164 transitions. [2022-11-03 03:41:16,374 INFO L496 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) [2022-11-03 03:41:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1164 transitions. [2022-11-03 03:41:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 03:41:16,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:16,376 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:16,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:41:16,377 INFO L420 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)] === [2022-11-03 03:41:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1482170354, now seen corresponding path program 1 times [2022-11-03 03:41:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:16,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886693631] [2022-11-03 03:41:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:16,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:16,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886693631] [2022-11-03 03:41:16,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886693631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:16,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:16,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37706505] [2022-11-03 03:41:16,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:16,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:16,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:16,647 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) [2022-11-03 03:41:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:17,593 INFO L93 Difference]: Finished difference Result 870 states and 1164 transitions. [2022-11-03 03:41:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:17,594 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 [2022-11-03 03:41:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:17,599 INFO L225 Difference]: With dead ends: 870 [2022-11-03 03:41:17,599 INFO L226 Difference]: Without dead ends: 868 [2022-11-03 03:41:17,600 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:17,601 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 1134 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-11-03 03:41:17,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 2038 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:41:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-03 03:41:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2022-11-03 03:41:17,675 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) [2022-11-03 03:41:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1162 transitions. [2022-11-03 03:41:17,681 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1162 transitions. Word has length 81 [2022-11-03 03:41:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:17,683 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1162 transitions. [2022-11-03 03:41:17,683 INFO L496 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) [2022-11-03 03:41:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1162 transitions. [2022-11-03 03:41:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 03:41:17,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:17,692 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:41:17,693 INFO L420 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)] === [2022-11-03 03:41:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 334242286, now seen corresponding path program 1 times [2022-11-03 03:41:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:17,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197577804] [2022-11-03 03:41:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:17,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:18,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197577804] [2022-11-03 03:41:18,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197577804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:18,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:18,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752067625] [2022-11-03 03:41:18,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:18,005 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) [2022-11-03 03:41:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:18,837 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2022-11-03 03:41:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:18,837 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 [2022-11-03 03:41:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:18,843 INFO L225 Difference]: With dead ends: 868 [2022-11-03 03:41:18,843 INFO L226 Difference]: Without dead ends: 866 [2022-11-03 03:41:18,851 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:18,851 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1135 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-03 03:41:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2022-11-03 03:41:18,934 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) [2022-11-03 03:41:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1160 transitions. [2022-11-03 03:41:18,940 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1160 transitions. Word has length 86 [2022-11-03 03:41:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:18,941 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1160 transitions. [2022-11-03 03:41:18,941 INFO L496 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) [2022-11-03 03:41:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1160 transitions. [2022-11-03 03:41:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 03:41:18,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:18,943 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:18,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:41:18,943 INFO L420 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)] === [2022-11-03 03:41:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -915578671, now seen corresponding path program 1 times [2022-11-03 03:41:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:18,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547763278] [2022-11-03 03:41:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:19,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:19,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547763278] [2022-11-03 03:41:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547763278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:19,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29830772] [2022-11-03 03:41:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:19,220 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) [2022-11-03 03:41:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:20,059 INFO L93 Difference]: Finished difference Result 866 states and 1160 transitions. [2022-11-03 03:41:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:20,060 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 [2022-11-03 03:41:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:20,065 INFO L225 Difference]: With dead ends: 866 [2022-11-03 03:41:20,065 INFO L226 Difference]: Without dead ends: 864 [2022-11-03 03:41:20,066 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:20,066 INFO L413 NwaCegarLoop]: 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:20,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-03 03:41:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-11-03 03:41:20,164 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) [2022-11-03 03:41:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1158 transitions. [2022-11-03 03:41:20,170 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1158 transitions. Word has length 88 [2022-11-03 03:41:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1158 transitions. [2022-11-03 03:41:20,171 INFO L496 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) [2022-11-03 03:41:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1158 transitions. [2022-11-03 03:41:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 03:41:20,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:20,172 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:20,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:41:20,173 INFO L420 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)] === [2022-11-03 03:41:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash -484997293, now seen corresponding path program 1 times [2022-11-03 03:41:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:20,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285314155] [2022-11-03 03:41:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:20,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285314155] [2022-11-03 03:41:20,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285314155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:20,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:20,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044944436] [2022-11-03 03:41:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:20,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:20,478 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) [2022-11-03 03:41:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:21,365 INFO L93 Difference]: Finished difference Result 864 states and 1158 transitions. [2022-11-03 03:41:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:21,366 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 [2022-11-03 03:41:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:21,370 INFO L225 Difference]: With dead ends: 864 [2022-11-03 03:41:21,371 INFO L226 Difference]: Without dead ends: 862 [2022-11-03 03:41:21,372 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:21,372 INFO L413 NwaCegarLoop]: 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:21,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2026 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-11-03 03:41:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2022-11-03 03:41:21,478 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) [2022-11-03 03:41:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1156 transitions. [2022-11-03 03:41:21,483 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1156 transitions. Word has length 93 [2022-11-03 03:41:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1156 transitions. [2022-11-03 03:41:21,484 INFO L496 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) [2022-11-03 03:41:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1156 transitions. [2022-11-03 03:41:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 03:41:21,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:21,486 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:21,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:41:21,487 INFO L420 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)] === [2022-11-03 03:41:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash 20793332, now seen corresponding path program 1 times [2022-11-03 03:41:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738575851] [2022-11-03 03:41:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-03 03:41:22,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:22,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738575851] [2022-11-03 03:41:22,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738575851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:22,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:22,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459796944] [2022-11-03 03:41:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:22,233 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) [2022-11-03 03:41:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:23,547 INFO L93 Difference]: Finished difference Result 994 states and 1293 transitions. [2022-11-03 03:41:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:41:23,547 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 [2022-11-03 03:41:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:23,552 INFO L225 Difference]: With dead ends: 994 [2022-11-03 03:41:23,553 INFO L226 Difference]: Without dead ends: 992 [2022-11-03 03:41:23,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:41:23,554 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 1029 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:23,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 3485 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:41:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-11-03 03:41:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 984. [2022-11-03 03:41:23,659 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) [2022-11-03 03:41:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1287 transitions. [2022-11-03 03:41:23,665 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1287 transitions. Word has length 117 [2022-11-03 03:41:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:23,666 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1287 transitions. [2022-11-03 03:41:23,666 INFO L496 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) [2022-11-03 03:41:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1287 transitions. [2022-11-03 03:41:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 03:41:23,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:23,668 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:23,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:41:23,668 INFO L420 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)] === [2022-11-03 03:41:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1592725701, now seen corresponding path program 1 times [2022-11-03 03:41:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:23,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909755579] [2022-11-03 03:41:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:23,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:23,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909755579] [2022-11-03 03:41:23,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909755579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:23,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:23,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74955377] [2022-11-03 03:41:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:23,977 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) [2022-11-03 03:41:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:25,169 INFO L93 Difference]: Finished difference Result 984 states and 1287 transitions. [2022-11-03 03:41:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:25,169 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 [2022-11-03 03:41:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:25,175 INFO L225 Difference]: With dead ends: 984 [2022-11-03 03:41:25,175 INFO L226 Difference]: Without dead ends: 982 [2022-11-03 03:41:25,176 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:25,176 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 1123 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:25,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 2022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:41:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-03 03:41:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2022-11-03 03:41:25,284 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) [2022-11-03 03:41:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1285 transitions. [2022-11-03 03:41:25,289 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1285 transitions. Word has length 98 [2022-11-03 03:41:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:25,290 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1285 transitions. [2022-11-03 03:41:25,290 INFO L496 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) [2022-11-03 03:41:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1285 transitions. [2022-11-03 03:41:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:41:25,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:25,292 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:25,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:41:25,293 INFO L420 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)] === [2022-11-03 03:41:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1325805858, now seen corresponding path program 1 times [2022-11-03 03:41:25,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756510398] [2022-11-03 03:41:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-03 03:41:26,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:26,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756510398] [2022-11-03 03:41:26,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756510398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:26,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:26,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:41:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457511193] [2022-11-03 03:41:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:41:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:41:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:41:26,076 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) [2022-11-03 03:41:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:28,546 INFO L93 Difference]: Finished difference Result 982 states and 1285 transitions. [2022-11-03 03:41:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:28,547 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 [2022-11-03 03:41:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:28,552 INFO L225 Difference]: With dead ends: 982 [2022-11-03 03:41:28,552 INFO L226 Difference]: Without dead ends: 980 [2022-11-03 03:41:28,553 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:28,554 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 1114 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:28,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 3483 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:41:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-03 03:41:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2022-11-03 03:41:28,687 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) [2022-11-03 03:41:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1282 transitions. [2022-11-03 03:41:28,695 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1282 transitions. Word has length 131 [2022-11-03 03:41:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:28,695 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1282 transitions. [2022-11-03 03:41:28,696 INFO L496 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) [2022-11-03 03:41:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1282 transitions. [2022-11-03 03:41:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 03:41:28,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:28,698 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:41:28,698 INFO L420 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)] === [2022-11-03 03:41:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1534470055, now seen corresponding path program 1 times [2022-11-03 03:41:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:28,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892962486] [2022-11-03 03:41:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:28,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:28,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892962486] [2022-11-03 03:41:28,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892962486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:28,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:28,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525175895] [2022-11-03 03:41:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:28,975 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) [2022-11-03 03:41:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:30,017 INFO L93 Difference]: Finished difference Result 980 states and 1282 transitions. [2022-11-03 03:41:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:30,018 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 [2022-11-03 03:41:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:30,022 INFO L225 Difference]: With dead ends: 980 [2022-11-03 03:41:30,022 INFO L226 Difference]: Without dead ends: 978 [2022-11-03 03:41:30,023 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:30,024 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 1118 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:30,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2014 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:30,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-03 03:41:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 978. [2022-11-03 03:41:30,140 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) [2022-11-03 03:41:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1280 transitions. [2022-11-03 03:41:30,145 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1280 transitions. Word has length 103 [2022-11-03 03:41:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1280 transitions. [2022-11-03 03:41:30,146 INFO L496 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) [2022-11-03 03:41:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1280 transitions. [2022-11-03 03:41:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 03:41:30,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:30,148 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:30,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:41:30,149 INFO L420 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)] === [2022-11-03 03:41:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2114427257, now seen corresponding path program 1 times [2022-11-03 03:41:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:30,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117322122] [2022-11-03 03:41:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-03 03:41:30,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117322122] [2022-11-03 03:41:30,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117322122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:30,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:30,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:41:30,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758026582] [2022-11-03 03:41:30,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:41:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:41:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:41:30,354 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) [2022-11-03 03:41:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:31,424 INFO L93 Difference]: Finished difference Result 1917 states and 2515 transitions. [2022-11-03 03:41:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:41:31,424 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 [2022-11-03 03:41:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:31,430 INFO L225 Difference]: With dead ends: 1917 [2022-11-03 03:41:31,430 INFO L226 Difference]: Without dead ends: 972 [2022-11-03 03:41:31,434 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:31,435 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 1110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:31,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1003 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:31,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-03 03:41:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-03 03:41:31,622 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) [2022-11-03 03:41:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1271 transitions. [2022-11-03 03:41:31,626 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1271 transitions. Word has length 137 [2022-11-03 03:41:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:31,628 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1271 transitions. [2022-11-03 03:41:31,629 INFO L496 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) [2022-11-03 03:41:31,629 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1271 transitions. [2022-11-03 03:41:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:41:31,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:31,631 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:31,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:41:31,632 INFO L420 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)] === [2022-11-03 03:41:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1143372153, now seen corresponding path program 1 times [2022-11-03 03:41:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:31,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352982487] [2022-11-03 03:41:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:31,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:31,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352982487] [2022-11-03 03:41:31,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352982487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:31,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:31,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255698694] [2022-11-03 03:41:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:31,880 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) [2022-11-03 03:41:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:32,718 INFO L93 Difference]: Finished difference Result 972 states and 1271 transitions. [2022-11-03 03:41:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:32,719 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 [2022-11-03 03:41:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:32,724 INFO L225 Difference]: With dead ends: 972 [2022-11-03 03:41:32,724 INFO L226 Difference]: Without dead ends: 970 [2022-11-03 03:41:32,725 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:32,725 INFO L413 NwaCegarLoop]: 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 [2022-11-03 03:41:32,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 2000 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-11-03 03:41:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2022-11-03 03:41:32,892 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) [2022-11-03 03:41:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1269 transitions. [2022-11-03 03:41:32,897 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1269 transitions. Word has length 108 [2022-11-03 03:41:32,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:32,897 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1269 transitions. [2022-11-03 03:41:32,898 INFO L496 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) [2022-11-03 03:41:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1269 transitions. [2022-11-03 03:41:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:41:32,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:32,900 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:41:32,900 INFO L420 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)] === [2022-11-03 03:41:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1436582981, now seen corresponding path program 1 times [2022-11-03 03:41:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814424951] [2022-11-03 03:41:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:33,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:33,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814424951] [2022-11-03 03:41:33,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814424951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:33,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:33,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:33,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194930753] [2022-11-03 03:41:33,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:33,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:33,136 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) [2022-11-03 03:41:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:34,139 INFO L93 Difference]: Finished difference Result 970 states and 1269 transitions. [2022-11-03 03:41:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:34,140 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 [2022-11-03 03:41:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:34,145 INFO L225 Difference]: With dead ends: 970 [2022-11-03 03:41:34,145 INFO L226 Difference]: Without dead ends: 968 [2022-11-03 03:41:34,146 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:34,146 INFO L413 NwaCegarLoop]: 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:34,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1996 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:41:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-03 03:41:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2022-11-03 03:41:34,275 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) [2022-11-03 03:41:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1267 transitions. [2022-11-03 03:41:34,319 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1267 transitions. Word has length 113 [2022-11-03 03:41:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:34,320 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1267 transitions. [2022-11-03 03:41:34,320 INFO L496 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) [2022-11-03 03:41:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1267 transitions. [2022-11-03 03:41:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 03:41:34,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:34,323 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:41:34,323 INFO L420 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)] === [2022-11-03 03:41:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -933895322, now seen corresponding path program 1 times [2022-11-03 03:41:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:34,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642776006] [2022-11-03 03:41:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-03 03:41:34,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:34,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642776006] [2022-11-03 03:41:34,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642776006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:34,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:34,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338684256] [2022-11-03 03:41:34,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:34,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:34,875 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) [2022-11-03 03:41:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:36,917 INFO L93 Difference]: Finished difference Result 978 states and 1274 transitions. [2022-11-03 03:41:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:41:36,917 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 [2022-11-03 03:41:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:36,923 INFO L225 Difference]: With dead ends: 978 [2022-11-03 03:41:36,923 INFO L226 Difference]: Without dead ends: 976 [2022-11-03 03:41:36,924 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:36,924 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 220 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:36,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 4024 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 03:41:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-11-03 03:41:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 972. [2022-11-03 03:41:37,060 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) [2022-11-03 03:41:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2022-11-03 03:41:37,064 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 138 [2022-11-03 03:41:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:37,064 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2022-11-03 03:41:37,065 INFO L496 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) [2022-11-03 03:41:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2022-11-03 03:41:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 03:41:37,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:37,067 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:41:37,067 INFO L420 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)] === [2022-11-03 03:41:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1126694543, now seen corresponding path program 1 times [2022-11-03 03:41:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326156204] [2022-11-03 03:41:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-03 03:41:37,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326156204] [2022-11-03 03:41:37,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326156204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:37,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:37,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815113387] [2022-11-03 03:41:37,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:37,630 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) [2022-11-03 03:41:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:39,519 INFO L93 Difference]: Finished difference Result 2011 states and 2685 transitions. [2022-11-03 03:41:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:41:39,520 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 [2022-11-03 03:41:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:39,527 INFO L225 Difference]: With dead ends: 2011 [2022-11-03 03:41:39,527 INFO L226 Difference]: Without dead ends: 1259 [2022-11-03 03:41:39,530 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:39,530 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 219 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:39,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 4453 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:41:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-11-03 03:41:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 976. [2022-11-03 03:41:39,709 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) [2022-11-03 03:41:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1274 transitions. [2022-11-03 03:41:39,713 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1274 transitions. Word has length 138 [2022-11-03 03:41:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:39,714 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1274 transitions. [2022-11-03 03:41:39,714 INFO L496 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) [2022-11-03 03:41:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1274 transitions. [2022-11-03 03:41:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 03:41:39,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:39,716 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:41:39,718 INFO L420 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)] === [2022-11-03 03:41:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2073252045, now seen corresponding path program 1 times [2022-11-03 03:41:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:39,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3707666] [2022-11-03 03:41:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:39,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3707666] [2022-11-03 03:41:39,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3707666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:39,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:39,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65141907] [2022-11-03 03:41:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:39,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:39,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:39,990 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) [2022-11-03 03:41:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:40,902 INFO L93 Difference]: Finished difference Result 976 states and 1274 transitions. [2022-11-03 03:41:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:40,903 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 [2022-11-03 03:41:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:40,908 INFO L225 Difference]: With dead ends: 976 [2022-11-03 03:41:40,908 INFO L226 Difference]: Without dead ends: 974 [2022-11-03 03:41:40,909 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:40,909 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1104 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-11-03 03:41:40,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1992 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-03 03:41:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2022-11-03 03:41:41,073 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) [2022-11-03 03:41:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1272 transitions. [2022-11-03 03:41:41,077 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1272 transitions. Word has length 118 [2022-11-03 03:41:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:41,078 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1272 transitions. [2022-11-03 03:41:41,078 INFO L496 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) [2022-11-03 03:41:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1272 transitions. [2022-11-03 03:41:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 03:41:41,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:41,080 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:41,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:41:41,081 INFO L420 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)] === [2022-11-03 03:41:41,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash -588677465, now seen corresponding path program 1 times [2022-11-03 03:41:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107231997] [2022-11-03 03:41:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:41,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:41,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107231997] [2022-11-03 03:41:41,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107231997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:41,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:41,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678461418] [2022-11-03 03:41:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:41,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:41,469 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) [2022-11-03 03:41:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:42,512 INFO L93 Difference]: Finished difference Result 974 states and 1272 transitions. [2022-11-03 03:41:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:42,513 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 [2022-11-03 03:41:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:42,518 INFO L225 Difference]: With dead ends: 974 [2022-11-03 03:41:42,518 INFO L226 Difference]: Without dead ends: 972 [2022-11-03 03:41:42,519 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:42,521 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1101 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:42,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1988 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:41:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-03 03:41:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-03 03:41:42,690 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) [2022-11-03 03:41:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2022-11-03 03:41:42,694 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 123 [2022-11-03 03:41:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:42,694 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2022-11-03 03:41:42,695 INFO L496 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) [2022-11-03 03:41:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2022-11-03 03:41:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 03:41:42,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:42,697 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:41:42,698 INFO L420 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)] === [2022-11-03 03:41:42,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash 676486989, now seen corresponding path program 1 times [2022-11-03 03:41:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:42,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595396010] [2022-11-03 03:41:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:42,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-03 03:41:43,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:43,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595396010] [2022-11-03 03:41:43,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595396010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:43,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593301255] [2022-11-03 03:41:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:43,349 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) [2022-11-03 03:41:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:44,728 INFO L93 Difference]: Finished difference Result 1016 states and 1310 transitions. [2022-11-03 03:41:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:41:44,728 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 [2022-11-03 03:41:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:44,732 INFO L225 Difference]: With dead ends: 1016 [2022-11-03 03:41:44,732 INFO L226 Difference]: Without dead ends: 1014 [2022-11-03 03:41:44,733 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:44,734 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 1069 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:44,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3042 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:41:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-11-03 03:41:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1010. [2022-11-03 03:41:44,893 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) [2022-11-03 03:41:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1305 transitions. [2022-11-03 03:41:44,897 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1305 transitions. Word has length 151 [2022-11-03 03:41:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1305 transitions. [2022-11-03 03:41:44,898 INFO L496 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) [2022-11-03 03:41:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1305 transitions. [2022-11-03 03:41:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 03:41:44,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:44,900 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:44,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:41:44,901 INFO L420 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)] === [2022-11-03 03:41:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1159027858, now seen corresponding path program 1 times [2022-11-03 03:41:44,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798780487] [2022-11-03 03:41:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:44,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:45,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:45,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798780487] [2022-11-03 03:41:45,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798780487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:45,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:45,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178880060] [2022-11-03 03:41:45,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:45,175 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) [2022-11-03 03:41:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:46,108 INFO L93 Difference]: Finished difference Result 1010 states and 1305 transitions. [2022-11-03 03:41:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:46,109 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 [2022-11-03 03:41:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:46,114 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 03:41:46,114 INFO L226 Difference]: Without dead ends: 1008 [2022-11-03 03:41:46,115 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:46,115 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1098 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:46,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1984 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:41:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-11-03 03:41:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2022-11-03 03:41:46,271 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) [2022-11-03 03:41:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1303 transitions. [2022-11-03 03:41:46,275 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1303 transitions. Word has length 128 [2022-11-03 03:41:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1303 transitions. [2022-11-03 03:41:46,276 INFO L496 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) [2022-11-03 03:41:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1303 transitions. [2022-11-03 03:41:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 03:41:46,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:46,279 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:46,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 03:41:46,279 INFO L420 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)] === [2022-11-03 03:41:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash -871463278, now seen corresponding path program 1 times [2022-11-03 03:41:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:46,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664409781] [2022-11-03 03:41:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-03 03:41:46,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:46,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664409781] [2022-11-03 03:41:46,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664409781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:46,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:46,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:41:46,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556696554] [2022-11-03 03:41:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:46,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:41:46,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:41:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:41:46,473 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) [2022-11-03 03:41:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:47,092 INFO L93 Difference]: Finished difference Result 1915 states and 2456 transitions. [2022-11-03 03:41:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:41:47,094 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 [2022-11-03 03:41:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:47,100 INFO L225 Difference]: With dead ends: 1915 [2022-11-03 03:41:47,100 INFO L226 Difference]: Without dead ends: 1004 [2022-11-03 03:41:47,106 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:47,107 INFO L413 NwaCegarLoop]: 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 [2022-11-03 03:41:47,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 988 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:41:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-03 03:41:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2022-11-03 03:41:47,300 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) [2022-11-03 03:41:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1298 transitions. [2022-11-03 03:41:47,304 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1298 transitions. Word has length 160 [2022-11-03 03:41:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:47,305 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1298 transitions. [2022-11-03 03:41:47,305 INFO L496 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) [2022-11-03 03:41:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1298 transitions. [2022-11-03 03:41:47,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:41:47,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:47,308 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:47,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 03:41:47,308 INFO L420 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)] === [2022-11-03 03:41:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:47,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1328104122, now seen corresponding path program 1 times [2022-11-03 03:41:47,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:47,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078936305] [2022-11-03 03:41:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:47,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:47,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078936305] [2022-11-03 03:41:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078936305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:47,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:47,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942644108] [2022-11-03 03:41:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:47,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:47,579 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) [2022-11-03 03:41:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:48,649 INFO L93 Difference]: Finished difference Result 1004 states and 1298 transitions. [2022-11-03 03:41:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:48,649 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 [2022-11-03 03:41:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:48,654 INFO L225 Difference]: With dead ends: 1004 [2022-11-03 03:41:48,654 INFO L226 Difference]: Without dead ends: 1002 [2022-11-03 03:41:48,655 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:48,655 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1090 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1970 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:41:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-11-03 03:41:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2022-11-03 03:41:48,808 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) [2022-11-03 03:41:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1296 transitions. [2022-11-03 03:41:48,811 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1296 transitions. Word has length 133 [2022-11-03 03:41:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:48,811 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1296 transitions. [2022-11-03 03:41:48,812 INFO L496 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) [2022-11-03 03:41:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1296 transitions. [2022-11-03 03:41:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 03:41:48,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:48,814 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 03:41:48,814 INFO L420 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)] === [2022-11-03 03:41:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash -22576552, now seen corresponding path program 1 times [2022-11-03 03:41:48,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:48,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838471394] [2022-11-03 03:41:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:48,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-03 03:41:49,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:49,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838471394] [2022-11-03 03:41:49,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838471394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:41:49,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456970138] [2022-11-03 03:41:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:49,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:41:49,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:49,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:41:49,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:41:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:49,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:41:49,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:41:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-03 03:41:50,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:41:50,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456970138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:50,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:41:50,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:41:50,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396902387] [2022-11-03 03:41:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:50,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:41:50,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:41:50,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:41:50,019 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) [2022-11-03 03:41:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:50,706 INFO L93 Difference]: Finished difference Result 1922 states and 2459 transitions. [2022-11-03 03:41:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:41:50,707 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 [2022-11-03 03:41:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:50,712 INFO L225 Difference]: With dead ends: 1922 [2022-11-03 03:41:50,712 INFO L226 Difference]: Without dead ends: 1020 [2022-11-03 03:41:50,714 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:50,715 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 1034 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1043 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:41:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-11-03 03:41:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018. [2022-11-03 03:41:50,930 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) [2022-11-03 03:41:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1309 transitions. [2022-11-03 03:41:50,934 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1309 transitions. Word has length 165 [2022-11-03 03:41:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:50,934 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1309 transitions. [2022-11-03 03:41:50,935 INFO L496 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) [2022-11-03 03:41:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1309 transitions. [2022-11-03 03:41:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 03:41:50,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:50,937 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:50,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:51,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 03:41:51,153 INFO L420 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)] === [2022-11-03 03:41:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1043076461, now seen corresponding path program 1 times [2022-11-03 03:41:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:51,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235425285] [2022-11-03 03:41:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:51,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:51,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235425285] [2022-11-03 03:41:51,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235425285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:51,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:51,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:51,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392390957] [2022-11-03 03:41:51,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:51,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:51,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:51,411 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) [2022-11-03 03:41:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:52,908 INFO L93 Difference]: Finished difference Result 1742 states and 2203 transitions. [2022-11-03 03:41:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:41:52,909 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 [2022-11-03 03:41:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:52,917 INFO L225 Difference]: With dead ends: 1742 [2022-11-03 03:41:52,917 INFO L226 Difference]: Without dead ends: 1740 [2022-11-03 03:41:52,918 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:52,919 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1024 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:52,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2999 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:41:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-11-03 03:41:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1726. [2022-11-03 03:41:53,240 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) [2022-11-03 03:41:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2192 transitions. [2022-11-03 03:41:53,245 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2192 transitions. Word has length 138 [2022-11-03 03:41:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:53,246 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2192 transitions. [2022-11-03 03:41:53,246 INFO L496 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) [2022-11-03 03:41:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2192 transitions. [2022-11-03 03:41:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 03:41:53,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:53,248 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 03:41:53,248 INFO L420 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)] === [2022-11-03 03:41:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash -56762170, now seen corresponding path program 1 times [2022-11-03 03:41:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:53,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048334434] [2022-11-03 03:41:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:53,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:53,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048334434] [2022-11-03 03:41:53,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048334434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:53,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:53,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:53,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670755959] [2022-11-03 03:41:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:53,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:53,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:53,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:53,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:53,511 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) [2022-11-03 03:41:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:54,704 INFO L93 Difference]: Finished difference Result 1726 states and 2192 transitions. [2022-11-03 03:41:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:54,704 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 [2022-11-03 03:41:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:54,713 INFO L225 Difference]: With dead ends: 1726 [2022-11-03 03:41:54,713 INFO L226 Difference]: Without dead ends: 1724 [2022-11-03 03:41:54,714 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:54,715 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 1081 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:54,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1956 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:41:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-11-03 03:41:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2022-11-03 03:41:54,975 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) [2022-11-03 03:41:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2189 transitions. [2022-11-03 03:41:54,981 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2189 transitions. Word has length 143 [2022-11-03 03:41:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:54,982 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2189 transitions. [2022-11-03 03:41:54,982 INFO L496 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) [2022-11-03 03:41:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2189 transitions. [2022-11-03 03:41:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-03 03:41:54,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:54,984 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:54,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 03:41:54,985 INFO L420 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)] === [2022-11-03 03:41:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 834206149, now seen corresponding path program 1 times [2022-11-03 03:41:54,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444036827] [2022-11-03 03:41:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:41:55,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:55,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444036827] [2022-11-03 03:41:55,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444036827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:55,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:55,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:41:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044473032] [2022-11-03 03:41:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:41:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:41:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:41:55,243 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) [2022-11-03 03:41:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:57,180 INFO L93 Difference]: Finished difference Result 2564 states and 3254 transitions. [2022-11-03 03:41:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:41:57,181 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 [2022-11-03 03:41:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:57,194 INFO L225 Difference]: With dead ends: 2564 [2022-11-03 03:41:57,194 INFO L226 Difference]: Without dead ends: 2436 [2022-11-03 03:41:57,197 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:57,197 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 932 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3354 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 03:41:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2022-11-03 03:41:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2427. [2022-11-03 03:41:57,587 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) [2022-11-03 03:41:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2022-11-03 03:41:57,594 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 148 [2022-11-03 03:41:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:41:57,595 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2022-11-03 03:41:57,595 INFO L496 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) [2022-11-03 03:41:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2022-11-03 03:41:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 03:41:57,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:41:57,597 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:41:57,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 03:41:57,598 INFO L420 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)] === [2022-11-03 03:41:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:41:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -803822998, now seen corresponding path program 1 times [2022-11-03 03:41:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:41:57,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750315842] [2022-11-03 03:41:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:41:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:41:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:41:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-03 03:41:58,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:41:58,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750315842] [2022-11-03 03:41:58,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750315842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:41:58,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:41:58,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:41:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754180017] [2022-11-03 03:41:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:41:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:41:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:41:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:41:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:41:58,080 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) [2022-11-03 03:41:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:41:59,881 INFO L93 Difference]: Finished difference Result 2648 states and 3276 transitions. [2022-11-03 03:41:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:41:59,882 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 [2022-11-03 03:41:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:41:59,892 INFO L225 Difference]: With dead ends: 2648 [2022-11-03 03:41:59,892 INFO L226 Difference]: Without dead ends: 2646 [2022-11-03 03:41:59,894 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:41:59,894 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 784 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:41:59,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 3391 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 03:41:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-03 03:42:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2642. [2022-11-03 03:42:00,274 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) [2022-11-03 03:42:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3262 transitions. [2022-11-03 03:42:00,284 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3262 transitions. Word has length 166 [2022-11-03 03:42:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:00,285 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3262 transitions. [2022-11-03 03:42:00,285 INFO L496 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) [2022-11-03 03:42:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3262 transitions. [2022-11-03 03:42:00,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 03:42:00,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:00,291 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:42:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 03:42:00,292 INFO L420 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)] === [2022-11-03 03:42:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash 850104435, now seen corresponding path program 1 times [2022-11-03 03:42:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:00,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787762586] [2022-11-03 03:42:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-03 03:42:00,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:00,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787762586] [2022-11-03 03:42:00,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787762586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:00,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:00,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:42:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132902728] [2022-11-03 03:42:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:42:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:00,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:42:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:42:00,720 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) [2022-11-03 03:42:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:02,898 INFO L93 Difference]: Finished difference Result 2646 states and 3264 transitions. [2022-11-03 03:42:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:42:02,898 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 [2022-11-03 03:42:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:02,908 INFO L225 Difference]: With dead ends: 2646 [2022-11-03 03:42:02,909 INFO L226 Difference]: Without dead ends: 2644 [2022-11-03 03:42:02,910 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:42:02,911 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 45 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:02,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3905 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 03:42:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2022-11-03 03:42:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2642. [2022-11-03 03:42:03,486 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) [2022-11-03 03:42:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3254 transitions. [2022-11-03 03:42:03,494 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3254 transitions. Word has length 166 [2022-11-03 03:42:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:03,494 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3254 transitions. [2022-11-03 03:42:03,494 INFO L496 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) [2022-11-03 03:42:03,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3254 transitions. [2022-11-03 03:42:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 03:42:03,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:03,497 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:42:03,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 03:42:03,497 INFO L420 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)] === [2022-11-03 03:42:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash 286990509, now seen corresponding path program 1 times [2022-11-03 03:42:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899143433] [2022-11-03 03:42:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-03 03:42:03,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:03,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899143433] [2022-11-03 03:42:03,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899143433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:03,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:03,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:42:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830938536] [2022-11-03 03:42:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:03,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:42:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:42:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:42:03,990 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) [2022-11-03 03:42:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:06,830 INFO L93 Difference]: Finished difference Result 2644 states and 3255 transitions. [2022-11-03 03:42:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:42:06,830 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 [2022-11-03 03:42:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:06,839 INFO L225 Difference]: With dead ends: 2644 [2022-11-03 03:42:06,839 INFO L226 Difference]: Without dead ends: 2642 [2022-11-03 03:42:06,841 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:42:06,841 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 390 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:06,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 3783 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:42:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-11-03 03:42:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2640. [2022-11-03 03:42:07,394 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) [2022-11-03 03:42:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3245 transitions. [2022-11-03 03:42:07,402 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3245 transitions. Word has length 189 [2022-11-03 03:42:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:07,403 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 3245 transitions. [2022-11-03 03:42:07,403 INFO L496 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) [2022-11-03 03:42:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3245 transitions. [2022-11-03 03:42:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 03:42:07,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:07,407 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:42:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 03:42:07,407 INFO L420 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)] === [2022-11-03 03:42:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1375440762, now seen corresponding path program 1 times [2022-11-03 03:42:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688242849] [2022-11-03 03:42:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-03 03:42:08,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:08,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688242849] [2022-11-03 03:42:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688242849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:08,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:08,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:42:08,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073820247] [2022-11-03 03:42:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:42:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:42:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:42:08,478 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) [2022-11-03 03:42:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:13,349 INFO L93 Difference]: Finished difference Result 5186 states and 6465 transitions. [2022-11-03 03:42:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:42:13,350 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 [2022-11-03 03:42:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:13,358 INFO L225 Difference]: With dead ends: 5186 [2022-11-03 03:42:13,358 INFO L226 Difference]: Without dead ends: 2971 [2022-11-03 03:42:13,365 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:42:13,366 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 69 mSDsluCounter, 9484 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 9430 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:13,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 9430 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 03:42:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-11-03 03:42:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2658. [2022-11-03 03:42:13,979 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) [2022-11-03 03:42:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3269 transitions. [2022-11-03 03:42:13,986 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3269 transitions. Word has length 209 [2022-11-03 03:42:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:13,987 INFO L495 AbstractCegarLoop]: Abstraction has 2658 states and 3269 transitions. [2022-11-03 03:42:13,987 INFO L496 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) [2022-11-03 03:42:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3269 transitions. [2022-11-03 03:42:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-03 03:42:13,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:13,991 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:42:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 03:42:13,992 INFO L420 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)] === [2022-11-03 03:42:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1803912638, now seen corresponding path program 1 times [2022-11-03 03:42:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008447963] [2022-11-03 03:42:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-11-03 03:42:15,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:15,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008447963] [2022-11-03 03:42:15,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008447963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:15,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:15,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:42:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226091599] [2022-11-03 03:42:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:15,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:42:15,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:42:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:42:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:42:15,444 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) [2022-11-03 03:42:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:19,493 INFO L93 Difference]: Finished difference Result 5465 states and 7095 transitions. [2022-11-03 03:42:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:42:19,494 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 [2022-11-03 03:42:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:19,504 INFO L225 Difference]: With dead ends: 5465 [2022-11-03 03:42:19,505 INFO L226 Difference]: Without dead ends: 3624 [2022-11-03 03:42:19,511 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:42:19,512 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 284 mSDsluCounter, 11266 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 11539 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:19,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 11539 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 03:42:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-11-03 03:42:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2666. [2022-11-03 03:42:20,087 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) [2022-11-03 03:42:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3279 transitions. [2022-11-03 03:42:20,092 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3279 transitions. Word has length 231 [2022-11-03 03:42:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:20,093 INFO L495 AbstractCegarLoop]: Abstraction has 2666 states and 3279 transitions. [2022-11-03 03:42:20,093 INFO L496 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) [2022-11-03 03:42:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3279 transitions. [2022-11-03 03:42:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 03:42:20,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:20,096 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:42:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 03:42:20,097 INFO L420 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)] === [2022-11-03 03:42:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash -787386822, now seen corresponding path program 1 times [2022-11-03 03:42:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:42:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715156861] [2022-11-03 03:42:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:42:20,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:42:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146889489] [2022-11-03 03:42:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:20,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:42:20,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:20,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:42:20,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:42:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:21,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 03:42:21,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-03 03:42:21,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-03 03:42:22,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:42:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715156861] [2022-11-03 03:42:22,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:42:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146889489] [2022-11-03 03:42:22,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146889489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:22,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86893582] [2022-11-03 03:42:22,268 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2022-11-03 03:42:22,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:42:22,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:42:22,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:42:22,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:42:24,537 INFO L390 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 [2022-11-03 03:42:24,648 INFO L390 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 [2022-11-03 03:42:24,771 INFO L390 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 [2022-11-03 03:42:24,958 INFO L390 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 [2022-11-03 03:42:25,063 INFO L390 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 [2022-11-03 03:42:25,196 INFO L390 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 [2022-11-03 03:42:25,432 INFO L390 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 [2022-11-03 03:42:25,592 INFO L390 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 [2022-11-03 03:42:25,684 INFO L390 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 [2022-11-03 03:42:25,795 INFO L390 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 [2022-11-03 03:42:26,008 INFO L390 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 [2022-11-03 03:42:26,118 INFO L390 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 [2022-11-03 03:42:26,300 INFO L390 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 [2022-11-03 03:44:54,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 03:44:54,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:54,185 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:44:54,188 INFO L158 Benchmark]: Toolchain (without parser) took 235766.55ms. Allocated memory was 107.0MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 55.7MB in the beginning and 949.8MB in the end (delta: -894.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-03 03:44:54,188 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 84.4MB in the beginning and 84.3MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:44:54,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3470.20ms. Allocated memory was 107.0MB in the beginning and 174.1MB in the end (delta: 67.1MB). Free memory was 55.6MB in the beginning and 75.9MB in the end (delta: -20.3MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2022-11-03 03:44:54,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 275.15ms. Allocated memory is still 174.1MB. Free memory was 74.9MB in the beginning and 105.8MB in the end (delta: -30.9MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2022-11-03 03:44:54,189 INFO L158 Benchmark]: Boogie Preprocessor took 225.40ms. Allocated memory is still 174.1MB. Free memory was 105.8MB in the beginning and 86.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 03:44:54,189 INFO L158 Benchmark]: RCFGBuilder took 3796.18ms. Allocated memory was 174.1MB in the beginning and 268.4MB in the end (delta: 94.4MB). Free memory was 86.9MB in the beginning and 121.5MB in the end (delta: -34.5MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. [2022-11-03 03:44:54,189 INFO L158 Benchmark]: TraceAbstraction took 227990.28ms. Allocated memory was 268.4MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 120.4MB in the beginning and 949.8MB in the end (delta: -829.4MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-03 03:44:54,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 84.4MB in the beginning and 84.3MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3470.20ms. Allocated memory was 107.0MB in the beginning and 174.1MB in the end (delta: 67.1MB). Free memory was 55.6MB in the beginning and 75.9MB in the end (delta: -20.3MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 275.15ms. Allocated memory is still 174.1MB. Free memory was 74.9MB in the beginning and 105.8MB in the end (delta: -30.9MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 225.40ms. Allocated memory is still 174.1MB. Free memory was 105.8MB in the beginning and 86.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 3796.18ms. Allocated memory was 174.1MB in the beginning and 268.4MB in the end (delta: 94.4MB). Free memory was 86.9MB in the beginning and 121.5MB in the end (delta: -34.5MB). Peak memory consumption was 106.0MB. Max. memory is 16.1GB. * TraceAbstraction took 227990.28ms. Allocated memory was 268.4MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 120.4MB in the beginning and 949.8MB in the end (delta: -829.4MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:44:54,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/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_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:44:56,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:44:56,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:44:56,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:44:56,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:44:56,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:44:56,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:44:56,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:44:56,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:44:56,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:44:56,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:44:56,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:44:56,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:44:56,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:44:56,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:44:56,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:44:56,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:44:56,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:44:56,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:44:56,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:44:56,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:44:56,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:44:56,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:44:56,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:44:56,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:44:56,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:44:56,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:44:56,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:44:56,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:44:56,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:44:56,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:44:56,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:44:56,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:44:56,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:44:56,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:44:56,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:44:56,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:44:56,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:44:56,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:44:56,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:44:56,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:44:56,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:44:56,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:44:56,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:44:56,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:44:56,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:44:56,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:44:56,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:44:56,790 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:44:56,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:44:56,791 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:44:56,791 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:44:56,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:44:56,792 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:44:56,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:44:56,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:44:56,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:44:56,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:44:56,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:44:56,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:44:56,795 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:44:56,795 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:44:56,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:44:56,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:44:56,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:44:56,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:44:56,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:44:56,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:44:56,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:44:56,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:44:56,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:44:56,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:44:56,798 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:44:56,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:44:56,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:44:56,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:44:56,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:44:56,799 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 [2022-11-03 03:44:57,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:44:57,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:44:57,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:44:57,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:44:57,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:44:57,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:44:57,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/2c9020bb4/3a795bb8702d4665be807f91aaabec28/FLAG7c791bc3f [2022-11-03 03:44:58,135 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:44:58,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:44:58,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/2c9020bb4/3a795bb8702d4665be807f91aaabec28/FLAG7c791bc3f [2022-11-03 03:44:58,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/data/2c9020bb4/3a795bb8702d4665be807f91aaabec28 [2022-11-03 03:44:58,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:44:58,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:44:58,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:44:58,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:44:58,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:44:58,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:58" (1/1) ... [2022-11-03 03:44:58,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3fb53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:58, skipping insertion in model container [2022-11-03 03:44:58,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:58" (1/1) ... [2022-11-03 03:44:58,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:44:58,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:01,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2022-11-03 03:45:01,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2022-11-03 03:45:01,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2022-11-03 03:45:01,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2022-11-03 03:45:01,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2022-11-03 03:45:01,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2022-11-03 03:45:01,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2022-11-03 03:45:01,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2022-11-03 03:45:01,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2022-11-03 03:45:01,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2022-11-03 03:45:01,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2022-11-03 03:45:01,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2022-11-03 03:45:01,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2022-11-03 03:45:01,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2022-11-03 03:45:01,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2022-11-03 03:45:01,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2022-11-03 03:45:01,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2022-11-03 03:45:01,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2022-11-03 03:45:01,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2022-11-03 03:45:01,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2022-11-03 03:45:01,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2022-11-03 03:45:01,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2022-11-03 03:45:01,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2022-11-03 03:45:01,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2022-11-03 03:45:01,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2022-11-03 03:45:01,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2022-11-03 03:45:01,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2022-11-03 03:45:01,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2022-11-03 03:45:01,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2022-11-03 03:45:01,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2022-11-03 03:45:01,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2022-11-03 03:45:01,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2022-11-03 03:45:01,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2022-11-03 03:45:01,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2022-11-03 03:45:01,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2022-11-03 03:45:01,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2022-11-03 03:45:01,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2022-11-03 03:45:01,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2022-11-03 03:45:01,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2022-11-03 03:45:01,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2022-11-03 03:45:01,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2022-11-03 03:45:01,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2022-11-03 03:45:01,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2022-11-03 03:45:01,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2022-11-03 03:45:01,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2022-11-03 03:45:01,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2022-11-03 03:45:01,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2022-11-03 03:45:01,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2022-11-03 03:45:01,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2022-11-03 03:45:01,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2022-11-03 03:45:01,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2022-11-03 03:45:01,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2022-11-03 03:45:01,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2022-11-03 03:45:01,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2022-11-03 03:45:01,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2022-11-03 03:45:01,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2022-11-03 03:45:01,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2022-11-03 03:45:01,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2022-11-03 03:45:01,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2022-11-03 03:45:01,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2022-11-03 03:45:01,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2022-11-03 03:45:01,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2022-11-03 03:45:01,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2022-11-03 03:45:01,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2022-11-03 03:45:01,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2022-11-03 03:45:01,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2022-11-03 03:45:01,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2022-11-03 03:45:01,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2022-11-03 03:45:01,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2022-11-03 03:45:01,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2022-11-03 03:45:01,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2022-11-03 03:45:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2022-11-03 03:45:01,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2022-11-03 03:45:01,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2022-11-03 03:45:01,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2022-11-03 03:45:01,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2022-11-03 03:45:01,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2022-11-03 03:45:01,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2022-11-03 03:45:01,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2022-11-03 03:45:01,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2022-11-03 03:45:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2022-11-03 03:45:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2022-11-03 03:45:01,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2022-11-03 03:45:01,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2022-11-03 03:45:01,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2022-11-03 03:45:01,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2022-11-03 03:45:01,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2022-11-03 03:45:01,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2022-11-03 03:45:01,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:01,749 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:45:01,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:02,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2022-11-03 03:45:02,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2022-11-03 03:45:02,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2022-11-03 03:45:02,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2022-11-03 03:45:02,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2022-11-03 03:45:02,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2022-11-03 03:45:02,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2022-11-03 03:45:02,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2022-11-03 03:45:02,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2022-11-03 03:45:02,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2022-11-03 03:45:02,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2022-11-03 03:45:02,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2022-11-03 03:45:02,087 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2022-11-03 03:45:02,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2022-11-03 03:45:02,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2022-11-03 03:45:02,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2022-11-03 03:45:02,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2022-11-03 03:45:02,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2022-11-03 03:45:02,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2022-11-03 03:45:02,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2022-11-03 03:45:02,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2022-11-03 03:45:02,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2022-11-03 03:45:02,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2022-11-03 03:45:02,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2022-11-03 03:45:02,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2022-11-03 03:45:02,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2022-11-03 03:45:02,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2022-11-03 03:45:02,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2022-11-03 03:45:02,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2022-11-03 03:45:02,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2022-11-03 03:45:02,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2022-11-03 03:45:02,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2022-11-03 03:45:02,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2022-11-03 03:45:02,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2022-11-03 03:45:02,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2022-11-03 03:45:02,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2022-11-03 03:45:02,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2022-11-03 03:45:02,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2022-11-03 03:45:02,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2022-11-03 03:45:02,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2022-11-03 03:45:02,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2022-11-03 03:45:02,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2022-11-03 03:45:02,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2022-11-03 03:45:02,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2022-11-03 03:45:02,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2022-11-03 03:45:02,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2022-11-03 03:45:02,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2022-11-03 03:45:02,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2022-11-03 03:45:02,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2022-11-03 03:45:02,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2022-11-03 03:45:02,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2022-11-03 03:45:02,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2022-11-03 03:45:02,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2022-11-03 03:45:02,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2022-11-03 03:45:02,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2022-11-03 03:45:02,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2022-11-03 03:45:02,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2022-11-03 03:45:02,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2022-11-03 03:45:02,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2022-11-03 03:45:02,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2022-11-03 03:45:02,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2022-11-03 03:45:02,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2022-11-03 03:45:02,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2022-11-03 03:45:02,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2022-11-03 03:45:02,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2022-11-03 03:45:02,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2022-11-03 03:45:02,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2022-11-03 03:45:02,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2022-11-03 03:45:02,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2022-11-03 03:45:02,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2022-11-03 03:45:02,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2022-11-03 03:45:02,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2022-11-03 03:45:02,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2022-11-03 03:45:02,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2022-11-03 03:45:02,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2022-11-03 03:45:02,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2022-11-03 03:45:02,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2022-11-03 03:45:02,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2022-11-03 03:45:02,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2022-11-03 03:45:02,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2022-11-03 03:45:02,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2022-11-03 03:45:02,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2022-11-03 03:45:02,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2022-11-03 03:45:02,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2022-11-03 03:45:02,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2022-11-03 03:45:02,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2022-11-03 03:45:02,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2022-11-03 03:45:02,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2022-11-03 03:45:02,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:02,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:02,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2022-11-03 03:45:02,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2022-11-03 03:45:02,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2022-11-03 03:45:02,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2022-11-03 03:45:02,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2022-11-03 03:45:02,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2022-11-03 03:45:02,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2022-11-03 03:45:02,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2022-11-03 03:45:02,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2022-11-03 03:45:02,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2022-11-03 03:45:02,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2022-11-03 03:45:02,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2022-11-03 03:45:02,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2022-11-03 03:45:02,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2022-11-03 03:45:02,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2022-11-03 03:45:02,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2022-11-03 03:45:02,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2022-11-03 03:45:02,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2022-11-03 03:45:02,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2022-11-03 03:45:02,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2022-11-03 03:45:02,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2022-11-03 03:45:02,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2022-11-03 03:45:02,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2022-11-03 03:45:02,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2022-11-03 03:45:02,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2022-11-03 03:45:02,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2022-11-03 03:45:02,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2022-11-03 03:45:02,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2022-11-03 03:45:02,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2022-11-03 03:45:02,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2022-11-03 03:45:02,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2022-11-03 03:45:02,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2022-11-03 03:45:02,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2022-11-03 03:45:02,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2022-11-03 03:45:02,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2022-11-03 03:45:02,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2022-11-03 03:45:02,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2022-11-03 03:45:02,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2022-11-03 03:45:02,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2022-11-03 03:45:02,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2022-11-03 03:45:02,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2022-11-03 03:45:02,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2022-11-03 03:45:02,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2022-11-03 03:45:02,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2022-11-03 03:45:02,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2022-11-03 03:45:02,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2022-11-03 03:45:02,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2022-11-03 03:45:02,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2022-11-03 03:45:02,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2022-11-03 03:45:02,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2022-11-03 03:45:02,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2022-11-03 03:45:02,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2022-11-03 03:45:02,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2022-11-03 03:45:02,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2022-11-03 03:45:02,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2022-11-03 03:45:02,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2022-11-03 03:45:02,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2022-11-03 03:45:02,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2022-11-03 03:45:02,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2022-11-03 03:45:02,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2022-11-03 03:45:02,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2022-11-03 03:45:02,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2022-11-03 03:45:02,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2022-11-03 03:45:02,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2022-11-03 03:45:02,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2022-11-03 03:45:02,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2022-11-03 03:45:02,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2022-11-03 03:45:02,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2022-11-03 03:45:02,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2022-11-03 03:45:02,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2022-11-03 03:45:02,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2022-11-03 03:45:02,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2022-11-03 03:45:02,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2022-11-03 03:45:02,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2022-11-03 03:45:02,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2022-11-03 03:45:02,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2022-11-03 03:45:02,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2022-11-03 03:45:02,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2022-11-03 03:45:02,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2022-11-03 03:45:02,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2022-11-03 03:45:02,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2022-11-03 03:45:02,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2022-11-03 03:45:02,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2022-11-03 03:45:02,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2022-11-03 03:45:02,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2022-11-03 03:45:02,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2022-11-03 03:45:02,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2022-11-03 03:45:02,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2022-11-03 03:45:02,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:02,770 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:02,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02 WrapperNode [2022-11-03 03:45:02,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:02,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:02,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:02,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:02,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:02,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,019 INFO L138 Inliner]: procedures = 559, calls = 1509, calls flagged for inlining = 233, calls inlined = 144, statements flattened = 2860 [2022-11-03 03:45:03,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:03,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:03,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:03,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:03,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,183 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:03,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:03,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:03,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:03,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (1/1) ... [2022-11-03 03:45:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:03,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:03,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 03:45:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 03:45:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:45:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:45:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:45:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:45:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-03 03:45:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-03 03:45:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:45:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:45:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:45:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:45:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 03:45:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 03:45:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:45:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:45:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:45:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:45:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2022-11-03 03:45:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2022-11-03 03:45:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2022-11-03 03:45:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2022-11-03 03:45:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:45:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:45:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:45:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:45:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:45:03,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:45:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:45:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 03:45:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:45:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 03:45:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 03:45:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:45:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:45:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:45:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:45:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 03:45:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 03:45:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 03:45:03,319 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 03:45:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-03 03:45:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-03 03:45:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:45:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:45:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:45:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:45:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:45:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:45:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-03 03:45:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-03 03:45:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:45:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:45:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:45:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:45:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:45:03,321 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:45:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:45:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:45:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 03:45:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 03:45:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:45:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:45:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 03:45:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 03:45:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:45:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:45:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:45:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:45:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:45:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 03:45:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:45:03,324 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:45:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2022-11-03 03:45:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2022-11-03 03:45:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:45:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:45:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 03:45:03,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 03:45:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 03:45:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 03:45:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 03:45:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 03:45:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 03:45:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2022-11-03 03:45:03,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2022-11-03 03:45:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 03:45:03,327 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:45:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:45:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:45:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_disconnect [2022-11-03 03:45:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_disconnect [2022-11-03 03:45:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 03:45:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 03:45:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:45:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:45:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:45:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:45:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2022-11-03 03:45:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2022-11-03 03:45:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2022-11-03 03:45:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2022-11-03 03:45:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-03 03:45:03,330 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-03 03:45:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:45:03,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:45:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:45:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:45:03,331 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:45:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:45:03,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:45:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:45:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2022-11-03 03:45:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2022-11-03 03:45:03,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:45:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 03:45:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 03:45:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:45:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:45:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:45:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:45:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 03:45:03,333 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 03:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2022-11-03 03:45:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2022-11-03 03:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:45:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:45:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:45:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2022-11-03 03:45:03,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2022-11-03 03:45:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2022-11-03 03:45:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2022-11-03 03:45:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2022-11-03 03:45:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2022-11-03 03:45:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:45:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:45:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2022-11-03 03:45:03,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2022-11-03 03:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 03:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:45:03,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-03 03:45:03,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-03 03:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:45:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 03:45:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 03:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:45:03,337 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:45:03,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:45:03,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:45:03,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 03:45:03,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:45:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:45:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:45:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:45:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2022-11-03 03:45:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2022-11-03 03:45:03,339 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 03:45:03,339 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 03:45:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 03:45:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 03:45:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 03:45:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 03:45:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:45:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:45:03,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:45:03,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:45:04,094 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:04,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:04,233 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:45:16,696 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:16,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:16,720 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:45:16,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:16 BoogieIcfgContainer [2022-11-03 03:45:16,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:16,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:16,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:16,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:16,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:58" (1/3) ... [2022-11-03 03:45:16,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95548fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:16, skipping insertion in model container [2022-11-03 03:45:16,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:02" (2/3) ... [2022-11-03 03:45:16,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95548fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:16, skipping insertion in model container [2022-11-03 03:45:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:16" (3/3) ... [2022-11-03 03:45:16,742 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2022-11-03 03:45:16,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:16,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2022-11-03 03:45:16,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:16,866 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@239dc0ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:16,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-03 03:45:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 1112 states, 716 states have (on average 1.2807262569832403) internal successors, (917), 764 states have internal predecessors, (917), 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) [2022-11-03 03:45:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:45:16,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:16,893 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:16,893 INFO L420 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)] === [2022-11-03 03:45:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1180914757, now seen corresponding path program 1 times [2022-11-03 03:45:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10708924] [2022-11-03 03:45:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:16,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:16,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:16,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:45:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:18,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:45:18,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:45:18,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:18,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:18,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10708924] [2022-11-03 03:45:18,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10708924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:18,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:18,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:45:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519911877] [2022-11-03 03:45:18,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:18,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:45:18,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:45:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:45:18,305 INFO L87 Difference]: Start difference. First operand has 1112 states, 716 states have (on average 1.2807262569832403) internal successors, (917), 764 states have internal predecessors, (917), 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 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:45:19,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:19,999 INFO L93 Difference]: Finished difference Result 3207 states and 4760 transitions. [2022-11-03 03:45:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:45:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 71 [2022-11-03 03:45:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:20,034 INFO L225 Difference]: With dead ends: 3207 [2022-11-03 03:45:20,034 INFO L226 Difference]: Without dead ends: 2112 [2022-11-03 03:45:20,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:45:20,051 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 1217 mSDsluCounter, 9044 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 11731 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:20,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 11731 Invalid, 683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [434 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 03:45:20,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-11-03 03:45:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1100. [2022-11-03 03:45:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 710 states have (on average 1.2352112676056337) internal successors, (877), 754 states have internal predecessors, (877), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1435 transitions. [2022-11-03 03:45:20,240 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1435 transitions. Word has length 71 [2022-11-03 03:45:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:20,240 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1435 transitions. [2022-11-03 03:45:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:45:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1435 transitions. [2022-11-03 03:45:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:45:20,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:20,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:20,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:20,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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)] === [2022-11-03 03:45:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1140240007, now seen corresponding path program 1 times [2022-11-03 03:45:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402714681] [2022-11-03 03:45:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:20,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:20,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:20,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:20,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:45:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:21,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:21,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:21,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:21,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:21,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402714681] [2022-11-03 03:45:21,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402714681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:21,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:21,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286544671] [2022-11-03 03:45:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:21,819 INFO L87 Difference]: Start difference. First operand 1100 states and 1435 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 03:45:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:21,934 INFO L93 Difference]: Finished difference Result 1100 states and 1435 transitions. [2022-11-03 03:45:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 71 [2022-11-03 03:45:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:21,943 INFO L225 Difference]: With dead ends: 1100 [2022-11-03 03:45:21,944 INFO L226 Difference]: Without dead ends: 1098 [2022-11-03 03:45:21,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:21,946 INFO L413 NwaCegarLoop]: 1426 mSDtfsCounter, 1374 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:21,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2850 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-03 03:45:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2022-11-03 03:45:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 709 states have (on average 1.2341325811001411) internal successors, (875), 752 states have internal predecessors, (875), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1433 transitions. [2022-11-03 03:45:22,052 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1433 transitions. Word has length 71 [2022-11-03 03:45:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:22,053 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1433 transitions. [2022-11-03 03:45:22,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 03:45:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1433 transitions. [2022-11-03 03:45:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 03:45:22,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:22,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:22,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 03:45:22,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:22,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-11-03 03:45:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash 478141124, now seen corresponding path program 1 times [2022-11-03 03:45:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:22,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683126646] [2022-11-03 03:45:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:22,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:22,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:22,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:45:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:23,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:23,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:23,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683126646] [2022-11-03 03:45:23,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683126646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:23,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:23,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374219471] [2022-11-03 03:45:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:23,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:23,554 INFO L87 Difference]: Start difference. First operand 1098 states and 1433 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 03:45:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:23,661 INFO L93 Difference]: Finished difference Result 1098 states and 1433 transitions. [2022-11-03 03:45:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:23,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 77 [2022-11-03 03:45:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:23,669 INFO L225 Difference]: With dead ends: 1098 [2022-11-03 03:45:23,669 INFO L226 Difference]: Without dead ends: 1096 [2022-11-03 03:45:23,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:23,670 INFO L413 NwaCegarLoop]: 1424 mSDtfsCounter, 1366 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:23,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 2846 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-11-03 03:45:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1096. [2022-11-03 03:45:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 708 states have (on average 1.2330508474576272) internal successors, (873), 750 states have internal predecessors, (873), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1431 transitions. [2022-11-03 03:45:23,745 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1431 transitions. Word has length 77 [2022-11-03 03:45:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:23,746 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1431 transitions. [2022-11-03 03:45:23,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 03:45:23,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1431 transitions. [2022-11-03 03:45:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 03:45:23,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:23,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:23,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:23,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:23,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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)] === [2022-11-03 03:45:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash 752645049, now seen corresponding path program 1 times [2022-11-03 03:45:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:23,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450554931] [2022-11-03 03:45:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:23,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:23,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:23,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:45:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:24,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:24,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:25,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:25,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:25,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450554931] [2022-11-03 03:45:25,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450554931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:25,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:25,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672510166] [2022-11-03 03:45:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:25,250 INFO L87 Difference]: Start difference. First operand 1096 states and 1431 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-03 03:45:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:25,357 INFO L93 Difference]: Finished difference Result 1096 states and 1431 transitions. [2022-11-03 03:45:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2022-11-03 03:45:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:25,364 INFO L225 Difference]: With dead ends: 1096 [2022-11-03 03:45:25,365 INFO L226 Difference]: Without dead ends: 1094 [2022-11-03 03:45:25,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:25,366 INFO L413 NwaCegarLoop]: 1422 mSDtfsCounter, 1358 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2842 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:25,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 2842 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-03 03:45:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2022-11-03 03:45:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 707 states have (on average 1.231966053748232) internal successors, (871), 748 states have internal predecessors, (871), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1429 transitions. [2022-11-03 03:45:25,450 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1429 transitions. Word has length 83 [2022-11-03 03:45:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:25,450 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1429 transitions. [2022-11-03 03:45:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-03 03:45:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1429 transitions. [2022-11-03 03:45:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 03:45:25,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:25,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:25,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:25,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:25,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2022-11-03 03:45:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash -722619888, now seen corresponding path program 1 times [2022-11-03 03:45:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:25,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325519201] [2022-11-03 03:45:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:25,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:25,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:25,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:45:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:26,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:26,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:26,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:26,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:26,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325519201] [2022-11-03 03:45:26,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325519201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:26,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:26,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466090588] [2022-11-03 03:45:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:26,954 INFO L87 Difference]: Start difference. First operand 1094 states and 1429 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 03:45:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:27,070 INFO L93 Difference]: Finished difference Result 1094 states and 1429 transitions. [2022-11-03 03:45:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:27,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 89 [2022-11-03 03:45:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:27,076 INFO L225 Difference]: With dead ends: 1094 [2022-11-03 03:45:27,077 INFO L226 Difference]: Without dead ends: 1092 [2022-11-03 03:45:27,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:27,078 INFO L413 NwaCegarLoop]: 1420 mSDtfsCounter, 1350 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2838 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-11-03 03:45:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1092. [2022-11-03 03:45:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 706 states have (on average 1.2308781869688386) internal successors, (869), 746 states have internal predecessors, (869), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1427 transitions. [2022-11-03 03:45:27,168 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1427 transitions. Word has length 89 [2022-11-03 03:45:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:27,168 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1427 transitions. [2022-11-03 03:45:27,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 03:45:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1427 transitions. [2022-11-03 03:45:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 03:45:27,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:27,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-03 03:45:27,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:27,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2022-11-03 03:45:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -859777285, now seen corresponding path program 1 times [2022-11-03 03:45:27,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:27,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664306377] [2022-11-03 03:45:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:27,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:27,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:27,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:45:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:28,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:28,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:28,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:28,647 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664306377] [2022-11-03 03:45:28,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664306377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:28,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:28,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:28,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490093629] [2022-11-03 03:45:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:28,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:28,648 INFO L87 Difference]: Start difference. First operand 1092 states and 1427 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 03:45:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:28,810 INFO L93 Difference]: Finished difference Result 1092 states and 1427 transitions. [2022-11-03 03:45:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:28,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2022-11-03 03:45:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:28,817 INFO L225 Difference]: With dead ends: 1092 [2022-11-03 03:45:28,817 INFO L226 Difference]: Without dead ends: 1090 [2022-11-03 03:45:28,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:28,818 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1342 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:28,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2834 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-03 03:45:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-11-03 03:45:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 705 states have (on average 1.2297872340425533) internal successors, (867), 744 states have internal predecessors, (867), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1425 transitions. [2022-11-03 03:45:28,939 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1425 transitions. Word has length 95 [2022-11-03 03:45:28,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:28,939 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1425 transitions. [2022-11-03 03:45:28,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 03:45:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1425 transitions. [2022-11-03 03:45:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 03:45:28,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:28,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:28,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:29,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-03 03:45:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2134194122, now seen corresponding path program 1 times [2022-11-03 03:45:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:29,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423994095] [2022-11-03 03:45:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:29,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:29,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:29,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:45:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:30,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:30,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:30,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:30,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423994095] [2022-11-03 03:45:30,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423994095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:30,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:30,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851428285] [2022-11-03 03:45:30,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:30,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:30,363 INFO L87 Difference]: Start difference. First operand 1090 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-03 03:45:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:30,504 INFO L93 Difference]: Finished difference Result 1090 states and 1425 transitions. [2022-11-03 03:45:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2022-11-03 03:45:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:30,511 INFO L225 Difference]: With dead ends: 1090 [2022-11-03 03:45:30,511 INFO L226 Difference]: Without dead ends: 1088 [2022-11-03 03:45:30,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:30,512 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 1334 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:30,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2830 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-03 03:45:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1088. [2022-11-03 03:45:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 704 states have (on average 1.2286931818181819) internal successors, (865), 742 states have internal predecessors, (865), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1423 transitions. [2022-11-03 03:45:30,653 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1423 transitions. Word has length 101 [2022-11-03 03:45:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:30,654 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1423 transitions. [2022-11-03 03:45:30,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-03 03:45:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1423 transitions. [2022-11-03 03:45:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 03:45:30,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:30,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:30,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:30,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:30,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2022-11-03 03:45:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash -760690424, now seen corresponding path program 1 times [2022-11-03 03:45:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:30,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142322052] [2022-11-03 03:45:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:30,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:30,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:30,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:30,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:45:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:31,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:31,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:32,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:32,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:32,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142322052] [2022-11-03 03:45:32,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142322052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:32,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:32,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455479087] [2022-11-03 03:45:32,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:32,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:32,070 INFO L87 Difference]: Start difference. First operand 1088 states and 1423 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:45:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:32,213 INFO L93 Difference]: Finished difference Result 1088 states and 1423 transitions. [2022-11-03 03:45:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2022-11-03 03:45:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:32,220 INFO L225 Difference]: With dead ends: 1088 [2022-11-03 03:45:32,220 INFO L226 Difference]: Without dead ends: 1086 [2022-11-03 03:45:32,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:32,221 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1326 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:32,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 2826 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-03 03:45:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1086. [2022-11-03 03:45:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 703 states have (on average 1.2275960170697013) internal successors, (863), 740 states have internal predecessors, (863), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1421 transitions. [2022-11-03 03:45:32,357 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1421 transitions. Word has length 107 [2022-11-03 03:45:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:32,357 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1421 transitions. [2022-11-03 03:45:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:45:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1421 transitions. [2022-11-03 03:45:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:45:32,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:32,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:32,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:32,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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)] === [2022-11-03 03:45:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1779835120, now seen corresponding path program 1 times [2022-11-03 03:45:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:32,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865438479] [2022-11-03 03:45:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:32,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:32,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:32,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:45:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:33,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:33,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:33,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865438479] [2022-11-03 03:45:33,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865438479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:33,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:33,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:33,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277484680] [2022-11-03 03:45:33,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:33,782 INFO L87 Difference]: Start difference. First operand 1086 states and 1421 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-03 03:45:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:33,962 INFO L93 Difference]: Finished difference Result 1086 states and 1421 transitions. [2022-11-03 03:45:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 113 [2022-11-03 03:45:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:33,968 INFO L225 Difference]: With dead ends: 1086 [2022-11-03 03:45:33,969 INFO L226 Difference]: Without dead ends: 1084 [2022-11-03 03:45:33,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:33,970 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 1322 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:33,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2818 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-03 03:45:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1084. [2022-11-03 03:45:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 702 states have (on average 1.2264957264957266) internal successors, (861), 738 states have internal predecessors, (861), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1419 transitions. [2022-11-03 03:45:34,102 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1419 transitions. Word has length 113 [2022-11-03 03:45:34,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:34,103 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1419 transitions. [2022-11-03 03:45:34,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-03 03:45:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1419 transitions. [2022-11-03 03:45:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 03:45:34,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:34,105 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:34,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:34,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:34,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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)] === [2022-11-03 03:45:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1024698259, now seen corresponding path program 1 times [2022-11-03 03:45:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698084820] [2022-11-03 03:45:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:34,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:34,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:34,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:45:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:35,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:35,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:35,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:35,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:35,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698084820] [2022-11-03 03:45:35,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698084820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:35,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:35,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308605868] [2022-11-03 03:45:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:35,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:35,586 INFO L87 Difference]: Start difference. First operand 1084 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-03 03:45:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:35,764 INFO L93 Difference]: Finished difference Result 1084 states and 1419 transitions. [2022-11-03 03:45:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 115 [2022-11-03 03:45:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:35,771 INFO L225 Difference]: With dead ends: 1084 [2022-11-03 03:45:35,771 INFO L226 Difference]: Without dead ends: 1082 [2022-11-03 03:45:35,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:35,772 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1314 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 2818 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-03 03:45:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2022-11-03 03:45:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 701 states have (on average 1.225392296718973) internal successors, (859), 736 states have internal predecessors, (859), 280 states have call successors, (280), 82 states have call predecessors, (280), 81 states have return successors, (278), 273 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1417 transitions. [2022-11-03 03:45:35,953 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1417 transitions. Word has length 115 [2022-11-03 03:45:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:35,953 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1417 transitions. [2022-11-03 03:45:35,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-03 03:45:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1417 transitions. [2022-11-03 03:45:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 03:45:35,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:35,956 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:35,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:36,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:36,174 INFO L420 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)] === [2022-11-03 03:45:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 966475960, now seen corresponding path program 1 times [2022-11-03 03:45:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:36,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196799883] [2022-11-03 03:45:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:36,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:36,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:45:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:37,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:45:37,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-03 03:45:37,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:37,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196799883] [2022-11-03 03:45:37,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196799883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:37,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:37,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-03 03:45:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373462161] [2022-11-03 03:45:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:37,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 03:45:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 03:45:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:45:37,743 INFO L87 Difference]: Start difference. First operand 1082 states and 1417 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 7 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:45:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:40,402 INFO L93 Difference]: Finished difference Result 2184 states and 2873 transitions. [2022-11-03 03:45:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 03:45:40,403 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 7 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 152 [2022-11-03 03:45:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:40,409 INFO L225 Difference]: With dead ends: 2184 [2022-11-03 03:45:40,409 INFO L226 Difference]: Without dead ends: 1120 [2022-11-03 03:45:40,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:45:40,415 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 90 mSDsluCounter, 22130 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 23535 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:40,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 23535 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 03:45:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-11-03 03:45:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1096. [2022-11-03 03:45:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 711 states have (on average 1.2208157524613221) internal successors, (868), 746 states have internal predecessors, (868), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:45:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1434 transitions. [2022-11-03 03:45:40,588 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1434 transitions. Word has length 152 [2022-11-03 03:45:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:40,588 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1434 transitions. [2022-11-03 03:45:40,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 7 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-03 03:45:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1434 transitions. [2022-11-03 03:45:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 03:45:40,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:40,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:40,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:40,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:40,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2022-11-03 03:45:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1233670436, now seen corresponding path program 1 times [2022-11-03 03:45:40,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948561460] [2022-11-03 03:45:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:40,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:40,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:45:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:41,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:41,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:42,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:42,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:42,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948561460] [2022-11-03 03:45:42,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948561460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:42,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:42,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302089030] [2022-11-03 03:45:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:42,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:42,062 INFO L87 Difference]: Start difference. First operand 1096 states and 1434 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:45:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:42,255 INFO L93 Difference]: Finished difference Result 1096 states and 1434 transitions. [2022-11-03 03:45:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 121 [2022-11-03 03:45:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:42,264 INFO L225 Difference]: With dead ends: 1096 [2022-11-03 03:45:42,264 INFO L226 Difference]: Without dead ends: 1094 [2022-11-03 03:45:42,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:42,265 INFO L413 NwaCegarLoop]: 1408 mSDtfsCounter, 1306 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:42,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 2814 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-03 03:45:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2022-11-03 03:45:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 710 states have (on average 1.2197183098591549) internal successors, (866), 744 states have internal predecessors, (866), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:45:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1432 transitions. [2022-11-03 03:45:42,461 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1432 transitions. Word has length 121 [2022-11-03 03:45:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:42,462 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1432 transitions. [2022-11-03 03:45:42,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:45:42,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1432 transitions. [2022-11-03 03:45:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 03:45:42,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:42,465 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 03:45:42,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:42,680 INFO L420 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)] === [2022-11-03 03:45:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -965351058, now seen corresponding path program 1 times [2022-11-03 03:45:42,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:42,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044239782] [2022-11-03 03:45:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:42,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:42,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:42,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:42,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:45:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:43,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:45:43,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 03:45:44,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-03 03:45:44,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044239782] [2022-11-03 03:45:44,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044239782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1511805574] [2022-11-03 03:45:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:45:44,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:45:44,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 03:45:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:45,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:45:45,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-03 03:45:46,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:46,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1511805574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:46,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:45:46,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 13 [2022-11-03 03:45:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364678765] [2022-11-03 03:45:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:45:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:45:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:45:46,516 INFO L87 Difference]: Start difference. First operand 1094 states and 1432 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:45:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:48,974 INFO L93 Difference]: Finished difference Result 2130 states and 2795 transitions. [2022-11-03 03:45:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:45:48,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 168 [2022-11-03 03:45:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:48,981 INFO L225 Difference]: With dead ends: 2130 [2022-11-03 03:45:48,981 INFO L226 Difference]: Without dead ends: 1094 [2022-11-03 03:45:48,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:45:48,985 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 1333 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:48,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 5058 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:45:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-03 03:45:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2022-11-03 03:45:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 710 states have (on average 1.2183098591549295) internal successors, (865), 744 states have internal predecessors, (865), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:45:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1431 transitions. [2022-11-03 03:45:49,192 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1431 transitions. Word has length 168 [2022-11-03 03:45:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:49,193 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1431 transitions. [2022-11-03 03:45:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-03 03:45:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1431 transitions. [2022-11-03 03:45:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 03:45:49,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:49,196 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 03:45:49,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:49,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:49,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:49,613 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2022-11-03 03:45:49,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:49,614 INFO L85 PathProgramCache]: Analyzing trace with hash -965291476, now seen corresponding path program 1 times [2022-11-03 03:45:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:49,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227440435] [2022-11-03 03:45:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:49,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:49,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:49,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:49,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:45:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:50,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:45:50,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 03:45:50,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-03 03:45:51,445 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227440435] [2022-11-03 03:45:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227440435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255347156] [2022-11-03 03:45:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:51,446 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:51,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:45:51,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:45:51,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 03:45:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:53,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:45:53,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-03 03:45:53,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:53,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [255347156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:53,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:45:53,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2022-11-03 03:45:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568250157] [2022-11-03 03:45:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:45:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:45:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:45:53,818 INFO L87 Difference]: Start difference. First operand 1094 states and 1431 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 03:45:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:54,250 INFO L93 Difference]: Finished difference Result 2171 states and 2851 transitions. [2022-11-03 03:45:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:45:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 168 [2022-11-03 03:45:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:54,264 INFO L225 Difference]: With dead ends: 2171 [2022-11-03 03:45:54,267 INFO L226 Difference]: Without dead ends: 1116 [2022-11-03 03:45:54,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:45:54,271 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 483 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 6599 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:54,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 6599 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:45:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-11-03 03:45:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1094. [2022-11-03 03:45:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 710 states have (on average 1.2169014084507042) internal successors, (864), 743 states have internal predecessors, (864), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:45:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1430 transitions. [2022-11-03 03:45:54,478 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1430 transitions. Word has length 168 [2022-11-03 03:45:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:54,478 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1430 transitions. [2022-11-03 03:45:54,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 03:45:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1430 transitions. [2022-11-03 03:45:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 03:45:54,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:54,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:54,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:54,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:54,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:54,896 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-11-03 03:45:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:54,897 INFO L85 PathProgramCache]: Analyzing trace with hash 694471801, now seen corresponding path program 1 times [2022-11-03 03:45:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:54,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513789282] [2022-11-03 03:45:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:54,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:54,899 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:54,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:45:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:55,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:45:56,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:56,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:56,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513789282] [2022-11-03 03:45:56,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513789282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:56,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:56,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:45:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099680959] [2022-11-03 03:45:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:56,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:56,208 INFO L87 Difference]: Start difference. First operand 1094 states and 1430 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 03:45:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:56,419 INFO L93 Difference]: Finished difference Result 1094 states and 1430 transitions. [2022-11-03 03:45:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 127 [2022-11-03 03:45:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:56,425 INFO L225 Difference]: With dead ends: 1094 [2022-11-03 03:45:56,425 INFO L226 Difference]: Without dead ends: 1092 [2022-11-03 03:45:56,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:45:56,427 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1296 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:56,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 2806 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:45:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-11-03 03:45:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1092. [2022-11-03 03:45:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 709 states have (on average 1.215796897038082) internal successors, (862), 741 states have internal predecessors, (862), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:45:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1428 transitions. [2022-11-03 03:45:56,669 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1428 transitions. Word has length 127 [2022-11-03 03:45:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:56,670 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1428 transitions. [2022-11-03 03:45:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 03:45:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1428 transitions. [2022-11-03 03:45:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 03:45:56,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:56,674 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 03:45:56,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:56,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:56,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2022-11-03 03:45:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash 535776783, now seen corresponding path program 1 times [2022-11-03 03:45:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:56,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765596634] [2022-11-03 03:45:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:56,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 03:45:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:58,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:45:58,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 229 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 03:45:58,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-03 03:45:59,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:59,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765596634] [2022-11-03 03:45:59,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765596634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:59,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1766702331] [2022-11-03 03:45:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:59,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:59,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:45:59,189 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:45:59,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 03:46:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:01,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:46:01,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-03 03:46:01,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:01,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1766702331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:01,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:46:01,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 14 [2022-11-03 03:46:01,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347804382] [2022-11-03 03:46:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:01,532 INFO L87 Difference]: Start difference. First operand 1092 states and 1428 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:46:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:01,984 INFO L93 Difference]: Finished difference Result 2162 states and 2838 transitions. [2022-11-03 03:46:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:46:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 172 [2022-11-03 03:46:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:01,990 INFO L225 Difference]: With dead ends: 2162 [2022-11-03 03:46:01,990 INFO L226 Difference]: Without dead ends: 1114 [2022-11-03 03:46:01,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:46:01,995 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 479 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 6590 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:01,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 6590 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:46:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-03 03:46:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1092. [2022-11-03 03:46:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 709 states have (on average 1.214386459802539) internal successors, (861), 740 states have internal predecessors, (861), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1427 transitions. [2022-11-03 03:46:02,226 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1427 transitions. Word has length 172 [2022-11-03 03:46:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:02,226 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1427 transitions. [2022-11-03 03:46:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 03:46:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1427 transitions. [2022-11-03 03:46:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-03 03:46:02,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:02,229 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:02,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:02,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:02,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:02,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-11-03 03:46:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 739493004, now seen corresponding path program 1 times [2022-11-03 03:46:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:02,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030074841] [2022-11-03 03:46:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:02,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:02,645 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:02,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:46:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:04,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:46:04,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:04,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030074841] [2022-11-03 03:46:04,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030074841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:04,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:04,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428300217] [2022-11-03 03:46:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:04,162 INFO L87 Difference]: Start difference. First operand 1092 states and 1427 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:46:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:04,434 INFO L93 Difference]: Finished difference Result 1092 states and 1427 transitions. [2022-11-03 03:46:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 176 [2022-11-03 03:46:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:04,439 INFO L225 Difference]: With dead ends: 1092 [2022-11-03 03:46:04,440 INFO L226 Difference]: Without dead ends: 1090 [2022-11-03 03:46:04,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:04,441 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 7 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4197 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:04,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4197 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-03 03:46:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-11-03 03:46:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 708 states have (on average 1.213276836158192) internal successors, (859), 738 states have internal predecessors, (859), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1425 transitions. [2022-11-03 03:46:04,672 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1425 transitions. Word has length 176 [2022-11-03 03:46:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:04,674 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1425 transitions. [2022-11-03 03:46:04,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-03 03:46:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1425 transitions. [2022-11-03 03:46:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 03:46:04,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:04,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:04,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:04,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:04,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-11-03 03:46:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash -193829921, now seen corresponding path program 1 times [2022-11-03 03:46:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:04,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44256087] [2022-11-03 03:46:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:04,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:04,900 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 03:46:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:05,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:06,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:06,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:06,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44256087] [2022-11-03 03:46:06,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44256087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:06,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:06,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:06,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399817302] [2022-11-03 03:46:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:06,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:06,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:06,245 INFO L87 Difference]: Start difference. First operand 1090 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-03 03:46:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:06,513 INFO L93 Difference]: Finished difference Result 1090 states and 1425 transitions. [2022-11-03 03:46:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:06,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133 [2022-11-03 03:46:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:06,518 INFO L225 Difference]: With dead ends: 1090 [2022-11-03 03:46:06,519 INFO L226 Difference]: Without dead ends: 1088 [2022-11-03 03:46:06,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:06,520 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 1285 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:06,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 2796 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:06,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-03 03:46:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1088. [2022-11-03 03:46:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 707 states have (on average 1.2121640735502122) internal successors, (857), 736 states have internal predecessors, (857), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1423 transitions. [2022-11-03 03:46:06,737 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1423 transitions. Word has length 133 [2022-11-03 03:46:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:06,737 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1423 transitions. [2022-11-03 03:46:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-03 03:46:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1423 transitions. [2022-11-03 03:46:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:46:06,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:06,740 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:06,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:06,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-11-03 03:46:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1906990363, now seen corresponding path program 1 times [2022-11-03 03:46:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:06,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375929497] [2022-11-03 03:46:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:06,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:06,964 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:06,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 03:46:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:08,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:08,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:46:08,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:08,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375929497] [2022-11-03 03:46:08,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375929497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:08,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:08,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:46:08,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603805981] [2022-11-03 03:46:08,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:08,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:08,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:08,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:08,944 INFO L87 Difference]: Start difference. First operand 1088 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 03:46:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:09,103 INFO L93 Difference]: Finished difference Result 2114 states and 2775 transitions. [2022-11-03 03:46:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:09,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 183 [2022-11-03 03:46:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:09,108 INFO L225 Difference]: With dead ends: 2114 [2022-11-03 03:46:09,108 INFO L226 Difference]: Without dead ends: 1084 [2022-11-03 03:46:09,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:09,112 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 1301 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:09,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1395 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-03 03:46:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1084. [2022-11-03 03:46:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 704 states have (on average 1.2102272727272727) internal successors, (852), 732 states have internal predecessors, (852), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1418 transitions. [2022-11-03 03:46:09,324 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1418 transitions. Word has length 183 [2022-11-03 03:46:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:09,324 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1418 transitions. [2022-11-03 03:46:09,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 03:46:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1418 transitions. [2022-11-03 03:46:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:46:09,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:09,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:09,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:09,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:09,541 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2022-11-03 03:46:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash -439536869, now seen corresponding path program 1 times [2022-11-03 03:46:09,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:09,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665359731] [2022-11-03 03:46:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:09,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:09,544 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:09,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 03:46:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:10,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:10,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:10,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:10,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:10,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665359731] [2022-11-03 03:46:10,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665359731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:10,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:10,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211695083] [2022-11-03 03:46:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:10,851 INFO L87 Difference]: Start difference. First operand 1084 states and 1418 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-03 03:46:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:11,038 INFO L93 Difference]: Finished difference Result 1084 states and 1418 transitions. [2022-11-03 03:46:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 139 [2022-11-03 03:46:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:11,044 INFO L225 Difference]: With dead ends: 1084 [2022-11-03 03:46:11,044 INFO L226 Difference]: Without dead ends: 1082 [2022-11-03 03:46:11,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:11,045 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 1272 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:11,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-11-03 03:46:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2022-11-03 03:46:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 703 states have (on average 1.209103840682788) internal successors, (850), 730 states have internal predecessors, (850), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1416 transitions. [2022-11-03 03:46:11,242 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1416 transitions. Word has length 139 [2022-11-03 03:46:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:11,243 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1416 transitions. [2022-11-03 03:46:11,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-03 03:46:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1416 transitions. [2022-11-03 03:46:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-03 03:46:11,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:11,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:11,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:11,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:11,452 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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)] === [2022-11-03 03:46:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:11,453 INFO L85 PathProgramCache]: Analyzing trace with hash -471614048, now seen corresponding path program 1 times [2022-11-03 03:46:11,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:11,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904566218] [2022-11-03 03:46:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:11,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:11,455 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:11,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 03:46:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:12,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:12,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:12,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904566218] [2022-11-03 03:46:12,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904566218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:12,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:12,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347207866] [2022-11-03 03:46:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:12,808 INFO L87 Difference]: Start difference. First operand 1082 states and 1416 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 03:46:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:12,990 INFO L93 Difference]: Finished difference Result 1082 states and 1416 transitions. [2022-11-03 03:46:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 145 [2022-11-03 03:46:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:12,995 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 03:46:12,995 INFO L226 Difference]: Without dead ends: 1080 [2022-11-03 03:46:12,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:12,996 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 1264 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:12,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2778 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-03 03:46:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1080. [2022-11-03 03:46:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 702 states have (on average 1.207977207977208) internal successors, (848), 728 states have internal predecessors, (848), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1414 transitions. [2022-11-03 03:46:13,181 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1414 transitions. Word has length 145 [2022-11-03 03:46:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:13,181 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1414 transitions. [2022-11-03 03:46:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 03:46:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1414 transitions. [2022-11-03 03:46:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 03:46:13,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:13,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:13,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:13,397 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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)] === [2022-11-03 03:46:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -572501438, now seen corresponding path program 1 times [2022-11-03 03:46:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:13,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949162555] [2022-11-03 03:46:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:13,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:13,400 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:13,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 03:46:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:14,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:14,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:14,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:14,782 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:14,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949162555] [2022-11-03 03:46:14,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949162555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:14,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:14,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512070764] [2022-11-03 03:46:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:14,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:14,784 INFO L87 Difference]: Start difference. First operand 1080 states and 1414 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-03 03:46:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:14,977 INFO L93 Difference]: Finished difference Result 1080 states and 1414 transitions. [2022-11-03 03:46:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 151 [2022-11-03 03:46:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:14,982 INFO L225 Difference]: With dead ends: 1080 [2022-11-03 03:46:14,982 INFO L226 Difference]: Without dead ends: 1078 [2022-11-03 03:46:14,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:14,983 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 1256 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:14,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 2774 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-03 03:46:15,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1078. [2022-11-03 03:46:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 701 states have (on average 1.2068473609129815) internal successors, (846), 726 states have internal predecessors, (846), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1412 transitions. [2022-11-03 03:46:15,190 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1412 transitions. Word has length 151 [2022-11-03 03:46:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:15,190 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1412 transitions. [2022-11-03 03:46:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-03 03:46:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1412 transitions. [2022-11-03 03:46:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:46:15,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:15,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:15,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:15,392 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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)] === [2022-11-03 03:46:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1535424735, now seen corresponding path program 1 times [2022-11-03 03:46:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:15,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702354930] [2022-11-03 03:46:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:15,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:15,394 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:15,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 03:46:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:16,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:16,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:16,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:16,783 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702354930] [2022-11-03 03:46:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702354930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:16,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:16,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:16,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823295213] [2022-11-03 03:46:16,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:16,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:16,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:16,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:16,785 INFO L87 Difference]: Start difference. First operand 1078 states and 1412 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-03 03:46:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:16,981 INFO L93 Difference]: Finished difference Result 1078 states and 1412 transitions. [2022-11-03 03:46:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 157 [2022-11-03 03:46:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:16,986 INFO L225 Difference]: With dead ends: 1078 [2022-11-03 03:46:16,987 INFO L226 Difference]: Without dead ends: 1076 [2022-11-03 03:46:16,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:16,988 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 1248 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:16,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 2770 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-11-03 03:46:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2022-11-03 03:46:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 700 states have (on average 1.2057142857142857) internal successors, (844), 724 states have internal predecessors, (844), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1410 transitions. [2022-11-03 03:46:17,189 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1410 transitions. Word has length 157 [2022-11-03 03:46:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:17,189 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1410 transitions. [2022-11-03 03:46:17,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2022-11-03 03:46:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1410 transitions. [2022-11-03 03:46:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 03:46:17,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:17,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:17,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:17,405 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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)] === [2022-11-03 03:46:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -338995215, now seen corresponding path program 1 times [2022-11-03 03:46:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:17,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859925795] [2022-11-03 03:46:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:17,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:17,408 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:17,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 03:46:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:18,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:18,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:18,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:18,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:18,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859925795] [2022-11-03 03:46:18,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859925795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:18,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:18,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:18,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265580066] [2022-11-03 03:46:18,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:18,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:18,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:18,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:18,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:18,791 INFO L87 Difference]: Start difference. First operand 1076 states and 1410 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:46:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:19,067 INFO L93 Difference]: Finished difference Result 1076 states and 1410 transitions. [2022-11-03 03:46:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2022-11-03 03:46:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:19,073 INFO L225 Difference]: With dead ends: 1076 [2022-11-03 03:46:19,073 INFO L226 Difference]: Without dead ends: 1074 [2022-11-03 03:46:19,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:19,075 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 1240 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:19,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 2766 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-11-03 03:46:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2022-11-03 03:46:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 699 states have (on average 1.2045779685264664) internal successors, (842), 722 states have internal predecessors, (842), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1408 transitions. [2022-11-03 03:46:19,271 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1408 transitions. Word has length 163 [2022-11-03 03:46:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:19,271 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1408 transitions. [2022-11-03 03:46:19,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-03 03:46:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1408 transitions. [2022-11-03 03:46:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 03:46:19,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:19,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:19,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:19,479 INFO L420 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)] === [2022-11-03 03:46:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1498153912, now seen corresponding path program 1 times [2022-11-03 03:46:19,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:19,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309702461] [2022-11-03 03:46:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:19,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:19,483 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:19,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 03:46:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:20,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:20,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:20,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:20,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309702461] [2022-11-03 03:46:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309702461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:20,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:20,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890385843] [2022-11-03 03:46:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:20,959 INFO L87 Difference]: Start difference. First operand 1074 states and 1408 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-03 03:46:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:21,177 INFO L93 Difference]: Finished difference Result 1074 states and 1408 transitions. [2022-11-03 03:46:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2022-11-03 03:46:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:21,183 INFO L225 Difference]: With dead ends: 1074 [2022-11-03 03:46:21,183 INFO L226 Difference]: Without dead ends: 1072 [2022-11-03 03:46:21,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:21,184 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 1232 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:21,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2762 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2022-11-03 03:46:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2022-11-03 03:46:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 698 states have (on average 1.2034383954154728) internal successors, (840), 720 states have internal predecessors, (840), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1406 transitions. [2022-11-03 03:46:21,480 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1406 transitions. Word has length 169 [2022-11-03 03:46:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:21,481 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1406 transitions. [2022-11-03 03:46:21,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-03 03:46:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1406 transitions. [2022-11-03 03:46:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-03 03:46:21,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:21,483 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:21,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:21,697 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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)] === [2022-11-03 03:46:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 521278354, now seen corresponding path program 1 times [2022-11-03 03:46:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938820320] [2022-11-03 03:46:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:21,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:21,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:21,701 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:21,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 03:46:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:23,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:23,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:46:23,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:23,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938820320] [2022-11-03 03:46:23,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938820320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:23,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:23,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119362831] [2022-11-03 03:46:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:23,492 INFO L87 Difference]: Start difference. First operand 1072 states and 1406 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:46:23,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:23,786 INFO L93 Difference]: Finished difference Result 1995 states and 2602 transitions. [2022-11-03 03:46:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 212 [2022-11-03 03:46:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:23,792 INFO L225 Difference]: With dead ends: 1995 [2022-11-03 03:46:23,792 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 03:46:23,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:23,795 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:23,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1378 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 03:46:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2022-11-03 03:46:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 695 states have (on average 1.2014388489208634) internal successors, (835), 716 states have internal predecessors, (835), 284 states have call successors, (284), 82 states have call predecessors, (284), 81 states have return successors, (282), 277 states have call predecessors, (282), 282 states have call successors, (282) [2022-11-03 03:46:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1401 transitions. [2022-11-03 03:46:24,064 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1401 transitions. Word has length 212 [2022-11-03 03:46:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:24,064 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1401 transitions. [2022-11-03 03:46:24,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:46:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1401 transitions. [2022-11-03 03:46:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-03 03:46:24,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:24,067 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:24,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 03:46:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:24,281 INFO L420 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)] === [2022-11-03 03:46:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash -169531474, now seen corresponding path program 1 times [2022-11-03 03:46:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242671295] [2022-11-03 03:46:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:24,284 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:24,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 03:46:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:25,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:25,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:25,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:25,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242671295] [2022-11-03 03:46:25,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242671295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:25,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974139833] [2022-11-03 03:46:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:25,805 INFO L87 Difference]: Start difference. First operand 1068 states and 1401 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-03 03:46:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:26,239 INFO L93 Difference]: Finished difference Result 1858 states and 2405 transitions. [2022-11-03 03:46:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2022-11-03 03:46:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:26,244 INFO L225 Difference]: With dead ends: 1858 [2022-11-03 03:46:26,244 INFO L226 Difference]: Without dead ends: 1856 [2022-11-03 03:46:26,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:26,245 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1217 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:26,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 4211 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-11-03 03:46:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1839. [2022-11-03 03:46:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1209 states have (on average 1.205955334987593) internal successors, (1458), 1241 states have internal predecessors, (1458), 467 states have call successors, (467), 156 states have call predecessors, (467), 155 states have return successors, (466), 455 states have call predecessors, (466), 465 states have call successors, (466) [2022-11-03 03:46:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2391 transitions. [2022-11-03 03:46:26,688 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2391 transitions. Word has length 175 [2022-11-03 03:46:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:26,688 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2391 transitions. [2022-11-03 03:46:26,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-03 03:46:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2391 transitions. [2022-11-03 03:46:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-03 03:46:26,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:26,691 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-11-03 03:46:26,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:26,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:26,905 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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)] === [2022-11-03 03:46:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1516179487, now seen corresponding path program 1 times [2022-11-03 03:46:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:26,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401558509] [2022-11-03 03:46:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:26,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:26,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:26,914 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:26,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 03:46:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:28,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:28,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-11-03 03:46:28,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:28,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:28,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401558509] [2022-11-03 03:46:28,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401558509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:28,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:28,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997232355] [2022-11-03 03:46:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:28,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:28,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:28,980 INFO L87 Difference]: Start difference. First operand 1839 states and 2391 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:46:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:29,409 INFO L93 Difference]: Finished difference Result 3537 states and 4576 transitions. [2022-11-03 03:46:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:29,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 218 [2022-11-03 03:46:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:29,416 INFO L225 Difference]: With dead ends: 3537 [2022-11-03 03:46:29,416 INFO L226 Difference]: Without dead ends: 1846 [2022-11-03 03:46:29,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:29,422 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 1304 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:29,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1408 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:46:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-11-03 03:46:29,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1845. [2022-11-03 03:46:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1213 states have (on average 1.2036273701566365) internal successors, (1460), 1244 states have internal predecessors, (1460), 467 states have call successors, (467), 159 states have call predecessors, (467), 158 states have return successors, (466), 455 states have call predecessors, (466), 465 states have call successors, (466) [2022-11-03 03:46:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2393 transitions. [2022-11-03 03:46:29,807 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2393 transitions. Word has length 218 [2022-11-03 03:46:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:29,807 INFO L495 AbstractCegarLoop]: Abstraction has 1845 states and 2393 transitions. [2022-11-03 03:46:29,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:46:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2393 transitions. [2022-11-03 03:46:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 03:46:29,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:29,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:29,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:30,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:30,025 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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)] === [2022-11-03 03:46:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash -254138011, now seen corresponding path program 1 times [2022-11-03 03:46:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:30,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493104458] [2022-11-03 03:46:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:30,029 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:30,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 03:46:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:31,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:31,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:31,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:31,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:31,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493104458] [2022-11-03 03:46:31,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493104458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:31,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:31,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065999946] [2022-11-03 03:46:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:31,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:31,691 INFO L87 Difference]: Start difference. First operand 1845 states and 2393 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-03 03:46:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:32,097 INFO L93 Difference]: Finished difference Result 1845 states and 2393 transitions. [2022-11-03 03:46:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 181 [2022-11-03 03:46:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:32,102 INFO L225 Difference]: With dead ends: 1845 [2022-11-03 03:46:32,102 INFO L226 Difference]: Without dead ends: 1843 [2022-11-03 03:46:32,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:32,103 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 1208 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:32,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2738 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-03 03:46:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2022-11-03 03:46:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1212 states have (on average 1.2021452145214522) internal successors, (1457), 1242 states have internal predecessors, (1457), 467 states have call successors, (467), 159 states have call predecessors, (467), 158 states have return successors, (466), 455 states have call predecessors, (466), 465 states have call successors, (466) [2022-11-03 03:46:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2390 transitions. [2022-11-03 03:46:32,591 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2390 transitions. Word has length 181 [2022-11-03 03:46:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:32,592 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2390 transitions. [2022-11-03 03:46:32,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-11-03 03:46:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2390 transitions. [2022-11-03 03:46:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 03:46:32,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:32,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:32,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:32,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:32,794 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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)] === [2022-11-03 03:46:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash -747549433, now seen corresponding path program 1 times [2022-11-03 03:46:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:32,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938767445] [2022-11-03 03:46:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:32,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:32,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:32,796 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:32,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 03:46:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:33,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:46:33,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 03:46:34,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:34,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:34,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938767445] [2022-11-03 03:46:34,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938767445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:34,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:34,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788830319] [2022-11-03 03:46:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:34,329 INFO L87 Difference]: Start difference. First operand 1843 states and 2390 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 03:46:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:35,081 INFO L93 Difference]: Finished difference Result 3573 states and 4645 transitions. [2022-11-03 03:46:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 187 [2022-11-03 03:46:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:35,091 INFO L225 Difference]: With dead ends: 3573 [2022-11-03 03:46:35,091 INFO L226 Difference]: Without dead ends: 3379 [2022-11-03 03:46:35,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:35,093 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1197 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 4694 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:35,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 4694 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2022-11-03 03:46:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3365. [2022-11-03 03:46:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2218 states have (on average 1.212804328223625) internal successors, (2690), 2270 states have internal predecessors, (2690), 854 states have call successors, (854), 289 states have call predecessors, (854), 287 states have return successors, (867), 833 states have call predecessors, (867), 851 states have call successors, (867) [2022-11-03 03:46:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4411 transitions. [2022-11-03 03:46:36,013 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4411 transitions. Word has length 187 [2022-11-03 03:46:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:36,014 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 4411 transitions. [2022-11-03 03:46:36,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 03:46:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4411 transitions. [2022-11-03 03:46:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-03 03:46:36,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:36,016 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:36,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:36,242 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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)] === [2022-11-03 03:46:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1544532004, now seen corresponding path program 1 times [2022-11-03 03:46:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:36,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36812389] [2022-11-03 03:46:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:36,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:36,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:36,244 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:36,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 03:46:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:37,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 03:46:37,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-03 03:46:38,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:38,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:38,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36812389] [2022-11-03 03:46:38,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36812389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:38,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:38,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 03:46:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551272998] [2022-11-03 03:46:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:46:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:46:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:46:38,298 INFO L87 Difference]: Start difference. First operand 3365 states and 4411 transitions. Second operand has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-03 03:46:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:42,768 INFO L93 Difference]: Finished difference Result 8138 states and 11061 transitions. [2022-11-03 03:46:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:46:42,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 272 [2022-11-03 03:46:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:42,785 INFO L225 Difference]: With dead ends: 8138 [2022-11-03 03:46:42,785 INFO L226 Difference]: Without dead ends: 4968 [2022-11-03 03:46:42,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:46:42,795 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 2938 mSDsluCounter, 17997 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 1372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2961 SdHoareTripleChecker+Valid, 19492 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1372 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:42,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2961 Valid, 19492 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1372 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 03:46:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2022-11-03 03:46:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 3401. [2022-11-03 03:46:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2242 states have (on average 1.2105263157894737) internal successors, (2714), 2292 states have internal predecessors, (2714), 866 states have call successors, (866), 289 states have call predecessors, (866), 287 states have return successors, (880), 845 states have call predecessors, (880), 863 states have call successors, (880) [2022-11-03 03:46:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4460 transitions. [2022-11-03 03:46:44,058 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4460 transitions. Word has length 272 [2022-11-03 03:46:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:44,058 INFO L495 AbstractCegarLoop]: Abstraction has 3401 states and 4460 transitions. [2022-11-03 03:46:44,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-03 03:46:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4460 transitions. [2022-11-03 03:46:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-03 03:46:44,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:44,062 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:44,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:44,265 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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)] === [2022-11-03 03:46:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash -22047440, now seen corresponding path program 1 times [2022-11-03 03:46:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857749993] [2022-11-03 03:46:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:44,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:44,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:44,267 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:44,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 03:46:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:46:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-03 03:46:46,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:46,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:46,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857749993] [2022-11-03 03:46:46,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857749993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:46,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:46,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:46:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655253864] [2022-11-03 03:46:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:46,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:46:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:46:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:46,502 INFO L87 Difference]: Start difference. First operand 3401 states and 4460 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (41), 5 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 03:46:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:49,095 INFO L93 Difference]: Finished difference Result 8323 states and 11311 transitions. [2022-11-03 03:46:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:46:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (41), 5 states have call predecessors, (41), 3 states have call successors, (41) Word has length 309 [2022-11-03 03:46:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:49,111 INFO L225 Difference]: With dead ends: 8323 [2022-11-03 03:46:49,112 INFO L226 Difference]: Without dead ends: 4962 [2022-11-03 03:46:49,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:49,120 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 368 mSDsluCounter, 12152 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 13698 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:49,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 13698 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-11-03 03:46:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 3412. [2022-11-03 03:46:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 2250 states have (on average 1.2097777777777778) internal successors, (2722), 2300 states have internal predecessors, (2722), 867 states have call successors, (867), 289 states have call predecessors, (867), 289 states have return successors, (884), 848 states have call predecessors, (884), 864 states have call successors, (884) [2022-11-03 03:46:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4473 transitions. [2022-11-03 03:46:50,526 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4473 transitions. Word has length 309 [2022-11-03 03:46:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:50,527 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 4473 transitions. [2022-11-03 03:46:50,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (41), 5 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-03 03:46:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4473 transitions. [2022-11-03 03:46:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-03 03:46:50,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:50,529 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:50,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:50,730 INFO L420 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)] === [2022-11-03 03:46:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash 183750510, now seen corresponding path program 1 times [2022-11-03 03:46:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:50,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045782491] [2022-11-03 03:46:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:50,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:50,733 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 03:46:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:53,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:46:53,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-03 03:46:53,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:53,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:46:53,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045782491] [2022-11-03 03:46:53,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045782491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:53,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:53,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:46:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988643923] [2022-11-03 03:46:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:53,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:46:53,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:46:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:46:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:53,258 INFO L87 Difference]: Start difference. First operand 3412 states and 4473 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 03:46:55,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:55,160 INFO L93 Difference]: Finished difference Result 6661 states and 8721 transitions. [2022-11-03 03:46:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:46:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 330 [2022-11-03 03:46:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:55,173 INFO L225 Difference]: With dead ends: 6661 [2022-11-03 03:46:55,173 INFO L226 Difference]: Without dead ends: 3412 [2022-11-03 03:46:55,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:55,182 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 7 mSDsluCounter, 5379 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:55,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6731 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2022-11-03 03:46:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3412. [2022-11-03 03:46:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 2250 states have (on average 1.208) internal successors, (2718), 2300 states have internal predecessors, (2718), 867 states have call successors, (867), 289 states have call predecessors, (867), 289 states have return successors, (884), 848 states have call predecessors, (884), 864 states have call successors, (884) [2022-11-03 03:46:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4469 transitions. [2022-11-03 03:46:56,679 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4469 transitions. Word has length 330 [2022-11-03 03:46:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:56,680 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 4469 transitions. [2022-11-03 03:46:56,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-03 03:46:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4469 transitions. [2022-11-03 03:46:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-03 03:46:56,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:56,682 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:56,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:46:56,882 INFO L420 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)] === [2022-11-03 03:46:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 441915948, now seen corresponding path program 1 times [2022-11-03 03:46:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:46:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157383265] [2022-11-03 03:46:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:56,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:46:56,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:46:56,886 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:46:56,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 03:47:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 03:47:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:11,692 INFO L390 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 7 [2022-11-03 03:47:14,380 INFO L390 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 [2022-11-03 03:47:14,394 INFO L390 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 [2022-11-03 03:47:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:47:14,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:47:14,742 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 03:47:14,743 INFO L390 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 13 treesize of output 13 [2022-11-03 03:47:15,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:47:15,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:47:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-03 03:47:15,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:15,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:47:15,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157383265] [2022-11-03 03:47:15,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157383265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:15,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:15,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 03:47:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88245711] [2022-11-03 03:47:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:15,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 03:47:15,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:47:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 03:47:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:47:15,926 INFO L87 Difference]: Start difference. First operand 3412 states and 4469 transitions. Second operand has 28 states, 27 states have (on average 4.925925925925926) internal successors, (133), 22 states have internal predecessors, (133), 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) [2022-11-03 03:47:30,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:32,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:34,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:36,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:38,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:40,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:42,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:44,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:45,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:47,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:49,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:50,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:47:52,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:09,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:11,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:13,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:15,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:17,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:19,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:21,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:23,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:25,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:27,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:29,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:31,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:33,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:48:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:39,076 INFO L93 Difference]: Finished difference Result 5372 states and 7005 transitions. [2022-11-03 03:48:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:48:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.925925925925926) internal successors, (133), 22 states have internal predecessors, (133), 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 330 [2022-11-03 03:48:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:39,089 INFO L225 Difference]: With dead ends: 5372 [2022-11-03 03:48:39,089 INFO L226 Difference]: Without dead ends: 3624 [2022-11-03 03:48:39,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 273 SyntacticMatches, 32 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:48:39,095 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 408 mSDsluCounter, 11126 mSDsCounter, 0 mSdLazyCounter, 9430 mSolverCounterSat, 331 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 12463 SdHoareTripleChecker+Invalid, 10903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 9430 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 1122 IncrementalHoareTripleChecker+Unchecked, 80.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:39,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 12463 Invalid, 10903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [331 Valid, 9430 Invalid, 20 Unknown, 1122 Unchecked, 80.6s Time] [2022-11-03 03:48:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-11-03 03:48:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3560. [2022-11-03 03:48:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2349 states have (on average 1.201362281822052) internal successors, (2822), 2406 states have internal predecessors, (2822), 884 states have call successors, (884), 309 states have call predecessors, (884), 321 states have return successors, (931), 870 states have call predecessors, (931), 881 states have call successors, (931) [2022-11-03 03:48:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4637 transitions. [2022-11-03 03:48:40,296 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4637 transitions. Word has length 330 [2022-11-03 03:48:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:40,297 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 4637 transitions. [2022-11-03 03:48:40,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.925925925925926) internal successors, (133), 22 states have internal predecessors, (133), 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) [2022-11-03 03:48:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4637 transitions. [2022-11-03 03:48:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-03 03:48:40,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:40,301 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:40,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:40,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:40,502 INFO L420 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)] === [2022-11-03 03:48:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1377069362, now seen corresponding path program 1 times [2022-11-03 03:48:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118007207] [2022-11-03 03:48:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:40,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:40,504 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:40,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 03:48:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:42,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:48:42,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-11-03 03:48:43,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:43,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118007207] [2022-11-03 03:48:43,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118007207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:43,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:43,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:48:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507459956] [2022-11-03 03:48:43,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:48:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:48:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:48:43,784 INFO L87 Difference]: Start difference. First operand 3560 states and 4637 transitions. Second operand has 13 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 5 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2022-11-03 03:48:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:46,354 INFO L93 Difference]: Finished difference Result 6938 states and 9026 transitions. [2022-11-03 03:48:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:48:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 5 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) Word has length 346 [2022-11-03 03:48:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:46,367 INFO L225 Difference]: With dead ends: 6938 [2022-11-03 03:48:46,367 INFO L226 Difference]: Without dead ends: 3566 [2022-11-03 03:48:46,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:48:46,377 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 13 mSDsluCounter, 9335 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10680 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:46,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10680 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:48:46,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2022-11-03 03:48:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3554. [2022-11-03 03:48:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2344 states have (on average 1.200085324232082) internal successors, (2813), 2402 states have internal predecessors, (2813), 884 states have call successors, (884), 309 states have call predecessors, (884), 320 states have return successors, (928), 868 states have call predecessors, (928), 881 states have call successors, (928) [2022-11-03 03:48:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4625 transitions. [2022-11-03 03:48:47,682 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4625 transitions. Word has length 346 [2022-11-03 03:48:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:47,683 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 4625 transitions. [2022-11-03 03:48:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 5 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2022-11-03 03:48:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4625 transitions. [2022-11-03 03:48:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-03 03:48:47,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:47,687 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:47,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:47,898 INFO L420 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)] === [2022-11-03 03:48:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1316873279, now seen corresponding path program 1 times [2022-11-03 03:48:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021356259] [2022-11-03 03:48:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:47,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:47,901 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:47,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 03:48:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:50,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:48:50,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-11-03 03:48:50,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:50,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021356259] [2022-11-03 03:48:50,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021356259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:50,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:50,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:50,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989553336] [2022-11-03 03:48:50,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:50,243 INFO L87 Difference]: Start difference. First operand 3554 states and 4625 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 03:48:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:54,315 INFO L93 Difference]: Finished difference Result 10554 states and 14712 transitions. [2022-11-03 03:48:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:48:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 353 [2022-11-03 03:48:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:54,341 INFO L225 Difference]: With dead ends: 10554 [2022-11-03 03:48:54,341 INFO L226 Difference]: Without dead ends: 7120 [2022-11-03 03:48:54,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:48:54,351 INFO L413 NwaCegarLoop]: 2590 mSDtfsCounter, 1612 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 8679 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:54,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 8679 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:48:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2022-11-03 03:48:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 3557. [2022-11-03 03:48:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2347 states have (on average 1.1998295696634) internal successors, (2816), 2405 states have internal predecessors, (2816), 884 states have call successors, (884), 309 states have call predecessors, (884), 320 states have return successors, (928), 868 states have call predecessors, (928), 881 states have call successors, (928) [2022-11-03 03:48:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4628 transitions. [2022-11-03 03:48:55,982 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4628 transitions. Word has length 353 [2022-11-03 03:48:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:55,983 INFO L495 AbstractCegarLoop]: Abstraction has 3557 states and 4628 transitions. [2022-11-03 03:48:55,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 03:48:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4628 transitions. [2022-11-03 03:48:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-03 03:48:55,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:55,986 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:56,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:56,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:48:56,201 INFO L420 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)] === [2022-11-03 03:48:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash 559609539, now seen corresponding path program 1 times [2022-11-03 03:48:56,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:48:56,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191705362] [2022-11-03 03:48:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:56,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:48:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:48:56,205 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:48:56,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 03:48:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:58,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1969 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:48:58,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-03 03:48:58,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:58,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:48:58,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191705362] [2022-11-03 03:48:58,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191705362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:58,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:48:58,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:48:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359952699] [2022-11-03 03:48:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:48:58,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:48:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:48:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:48:58,473 INFO L87 Difference]: Start difference. First operand 3557 states and 4628 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 03:49:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:02,726 INFO L93 Difference]: Finished difference Result 10566 states and 14724 transitions. [2022-11-03 03:49:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:49:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 353 [2022-11-03 03:49:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:02,752 INFO L225 Difference]: With dead ends: 10566 [2022-11-03 03:49:02,752 INFO L226 Difference]: Without dead ends: 7129 [2022-11-03 03:49:02,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:49:02,762 INFO L413 NwaCegarLoop]: 2671 mSDtfsCounter, 1552 mSDsluCounter, 6128 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 8799 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 8799 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:49:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2022-11-03 03:49:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 3560. [2022-11-03 03:49:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2350 states have (on average 1.1995744680851064) internal successors, (2819), 2408 states have internal predecessors, (2819), 884 states have call successors, (884), 309 states have call predecessors, (884), 320 states have return successors, (928), 868 states have call predecessors, (928), 881 states have call successors, (928) [2022-11-03 03:49:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4631 transitions. [2022-11-03 03:49:04,457 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4631 transitions. Word has length 353 [2022-11-03 03:49:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:04,458 INFO L495 AbstractCegarLoop]: Abstraction has 3560 states and 4631 transitions. [2022-11-03 03:49:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 03:49:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4631 transitions. [2022-11-03 03:49:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-03 03:49:04,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:04,461 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:04,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:49:04,685 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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)] === [2022-11-03 03:49:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2001253307, now seen corresponding path program 1 times [2022-11-03 03:49:04,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:49:04,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183489462] [2022-11-03 03:49:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:49:04,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:49:04,688 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:49:04,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 03:49:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 03:49:19,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:49:19,708 INFO L390 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 7 [2022-11-03 03:49:22,625 INFO L390 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 [2022-11-03 03:49:22,646 INFO L390 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 [2022-11-03 03:49:23,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:23,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:49:23,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:23,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:49:23,089 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 03:49:23,090 INFO L390 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 13 treesize of output 13 [2022-11-03 03:49:23,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:49:24,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:49:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-11-03 03:49:24,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:49:24,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:49:24,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183489462] [2022-11-03 03:49:24,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183489462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:24,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:24,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 03:49:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139406968] [2022-11-03 03:49:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 03:49:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:49:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 03:49:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:49:24,299 INFO L87 Difference]: Start difference. First operand 3560 states and 4631 transitions. Second operand has 28 states, 27 states have (on average 5.518518518518518) internal successors, (149), 22 states have internal predecessors, (149), 11 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (47), 13 states have call predecessors, (47), 9 states have call successors, (47) [2022-11-03 03:49:46,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:48,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:50,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:52,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:54,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:56,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:49:58,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:00,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:02,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:04,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:06,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:08,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:10,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:12,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:14,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:16,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:17,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:19,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:21,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:48,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:50,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:52,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:54,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:56,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:58,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:00,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:02,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:04,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:06,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:08,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:10,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:12,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:14,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:16,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:18,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:20,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:22,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:24,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:26,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:28,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:37,906 INFO L93 Difference]: Finished difference Result 5351 states and 6918 transitions. [2022-11-03 03:51:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 03:51:37,907 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.518518518518518) internal successors, (149), 22 states have internal predecessors, (149), 11 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (47), 13 states have call predecessors, (47), 9 states have call successors, (47) Word has length 353 [2022-11-03 03:51:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:37,919 INFO L225 Difference]: With dead ends: 5351 [2022-11-03 03:51:37,919 INFO L226 Difference]: Without dead ends: 3671 [2022-11-03 03:51:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 292 SyntacticMatches, 36 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:51:37,925 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 437 mSDsluCounter, 16552 mSDsCounter, 0 mSdLazyCounter, 14031 mSolverCounterSat, 340 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 17882 SdHoareTripleChecker+Invalid, 16088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 14031 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 1680 IncrementalHoareTripleChecker+Unchecked, 130.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:37,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 17882 Invalid, 16088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [340 Valid, 14031 Invalid, 37 Unknown, 1680 Unchecked, 130.7s Time] [2022-11-03 03:51:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2022-11-03 03:51:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3561. [2022-11-03 03:51:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2352 states have (on average 1.1989795918367347) internal successors, (2820), 2410 states have internal predecessors, (2820), 881 states have call successors, (881), 311 states have call predecessors, (881), 322 states have return successors, (924), 865 states have call predecessors, (924), 878 states have call successors, (924) [2022-11-03 03:51:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4625 transitions. [2022-11-03 03:51:39,513 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4625 transitions. Word has length 353 [2022-11-03 03:51:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:39,514 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 4625 transitions. [2022-11-03 03:51:39,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.518518518518518) internal successors, (149), 22 states have internal predecessors, (149), 11 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (47), 13 states have call predecessors, (47), 9 states have call successors, (47) [2022-11-03 03:51:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4625 transitions. [2022-11-03 03:51:39,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-03 03:51:39,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:39,517 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:39,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:39,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:51:39,741 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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)] === [2022-11-03 03:51:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1815078865, now seen corresponding path program 1 times [2022-11-03 03:51:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880816798] [2022-11-03 03:51:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:39,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:39,744 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:39,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 03:51:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:42,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 03:51:42,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2022-11-03 03:51:43,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:51:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 718 trivial. 0 not checked. [2022-11-03 03:51:45,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:51:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880816798] [2022-11-03 03:51:45,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880816798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:51:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1945153277] [2022-11-03 03:51:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:45,623 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:45,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:51:45,629 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:51:45,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-03 03:51:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 03:51:51,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:51:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-03 03:51:52,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:51:52,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1945153277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:52,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:51:52,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 13] total 24 [2022-11-03 03:51:52,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137751316] [2022-11-03 03:51:52,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:52,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:51:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:51:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:51:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:51:52,320 INFO L87 Difference]: Start difference. First operand 3561 states and 4625 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) [2022-11-03 03:51:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:55,812 INFO L93 Difference]: Finished difference Result 6110 states and 8144 transitions. [2022-11-03 03:51:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:51:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) Word has length 346 [2022-11-03 03:51:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:55,820 INFO L225 Difference]: With dead ends: 6110 [2022-11-03 03:51:55,821 INFO L226 Difference]: Without dead ends: 4429 [2022-11-03 03:51:55,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1012 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:51:55,824 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 833 mSDsluCounter, 17819 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 19938 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 19938 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:51:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2022-11-03 03:51:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 3561. [2022-11-03 03:51:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2352 states have (on average 1.1985544217687074) internal successors, (2819), 2410 states have internal predecessors, (2819), 881 states have call successors, (881), 311 states have call predecessors, (881), 322 states have return successors, (924), 865 states have call predecessors, (924), 878 states have call successors, (924) [2022-11-03 03:51:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4624 transitions. [2022-11-03 03:51:57,257 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4624 transitions. Word has length 346 [2022-11-03 03:51:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:57,257 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 4624 transitions. [2022-11-03 03:51:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 4 states have call successors, (47) [2022-11-03 03:51:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4624 transitions. [2022-11-03 03:51:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-03 03:51:57,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:57,260 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:57,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:57,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2022-11-03 03:51:57,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:51:57,670 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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)] === [2022-11-03 03:51:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash -449980971, now seen corresponding path program 1 times [2022-11-03 03:51:57,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:51:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061084952] [2022-11-03 03:51:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:57,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:51:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:51:57,673 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:51:57,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 03:51:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:59,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:51:59,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-03 03:52:01,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:01,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:01,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061084952] [2022-11-03 03:52:01,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061084952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:01,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:01,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:52:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530528215] [2022-11-03 03:52:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:01,297 INFO L87 Difference]: Start difference. First operand 3561 states and 4624 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-11-03 03:52:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:02,964 INFO L93 Difference]: Finished difference Result 4119 states and 5205 transitions. [2022-11-03 03:52:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 385 [2022-11-03 03:52:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:02,974 INFO L225 Difference]: With dead ends: 4119 [2022-11-03 03:52:02,975 INFO L226 Difference]: Without dead ends: 4117 [2022-11-03 03:52:02,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:02,976 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1043 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:02,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 4521 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:52:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-11-03 03:52:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 4105. [2022-11-03 03:52:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 2700 states have (on average 1.184074074074074) internal successors, (3197), 2758 states have internal predecessors, (3197), 977 states have call successors, (977), 411 states have call predecessors, (977), 422 states have return successors, (1016), 961 states have call predecessors, (1016), 974 states have call successors, (1016) [2022-11-03 03:52:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 5190 transitions. [2022-11-03 03:52:04,574 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 5190 transitions. Word has length 385 [2022-11-03 03:52:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:04,574 INFO L495 AbstractCegarLoop]: Abstraction has 4105 states and 5190 transitions. [2022-11-03 03:52:04,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-11-03 03:52:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 5190 transitions. [2022-11-03 03:52:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-03 03:52:04,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:04,577 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:04,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:04,778 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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)] === [2022-11-03 03:52:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1480577302, now seen corresponding path program 1 times [2022-11-03 03:52:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:04,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878304132] [2022-11-03 03:52:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:04,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:04,781 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:04,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 03:52:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:07,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 03:52:07,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-03 03:52:07,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:07,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878304132] [2022-11-03 03:52:07,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878304132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:07,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:07,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:52:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94061005] [2022-11-03 03:52:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:52:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:52:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:52:07,796 INFO L87 Difference]: Start difference. First operand 4105 states and 5190 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (55), 5 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 03:52:11,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:11,441 INFO L93 Difference]: Finished difference Result 9440 states and 12387 transitions. [2022-11-03 03:52:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:52:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (55), 5 states have call predecessors, (55), 3 states have call successors, (55) Word has length 390 [2022-11-03 03:52:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:11,455 INFO L225 Difference]: With dead ends: 9440 [2022-11-03 03:52:11,456 INFO L226 Difference]: Without dead ends: 5515 [2022-11-03 03:52:11,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:52:11,463 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 727 mSDsluCounter, 15184 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 17214 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:11,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 17214 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:52:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2022-11-03 03:52:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 3977. [2022-11-03 03:52:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 2617 states have (on average 1.1837982422621323) internal successors, (3098), 2673 states have internal predecessors, (3098), 941 states have call successors, (941), 404 states have call predecessors, (941), 413 states have return successors, (972), 924 states have call predecessors, (972), 938 states have call successors, (972) [2022-11-03 03:52:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5011 transitions. [2022-11-03 03:52:12,974 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5011 transitions. Word has length 390 [2022-11-03 03:52:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:12,975 INFO L495 AbstractCegarLoop]: Abstraction has 3977 states and 5011 transitions. [2022-11-03 03:52:12,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 8 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (55), 5 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 03:52:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5011 transitions. [2022-11-03 03:52:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 03:52:12,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:12,978 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:13,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:13,193 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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)] === [2022-11-03 03:52:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1099775295, now seen corresponding path program 1 times [2022-11-03 03:52:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:13,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302213507] [2022-11-03 03:52:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:13,196 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:13,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 03:52:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:15,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:52:15,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2022-11-03 03:52:15,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:15,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302213507] [2022-11-03 03:52:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302213507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:15,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:52:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054174896] [2022-11-03 03:52:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:52:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:52:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:15,359 INFO L87 Difference]: Start difference. First operand 3977 states and 5011 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:52:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:16,927 INFO L93 Difference]: Finished difference Result 3999 states and 5030 transitions. [2022-11-03 03:52:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 410 [2022-11-03 03:52:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:16,935 INFO L225 Difference]: With dead ends: 3999 [2022-11-03 03:52:16,935 INFO L226 Difference]: Without dead ends: 3997 [2022-11-03 03:52:16,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:16,936 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 264 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:16,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 5586 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:52:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2022-11-03 03:52:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3993. [2022-11-03 03:52:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3993 states, 2629 states have (on average 1.1829593001141119) internal successors, (3110), 2685 states have internal predecessors, (3110), 941 states have call successors, (941), 408 states have call predecessors, (941), 417 states have return successors, (972), 924 states have call predecessors, (972), 938 states have call successors, (972) [2022-11-03 03:52:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3993 states to 3993 states and 5023 transitions. [2022-11-03 03:52:18,340 INFO L78 Accepts]: Start accepts. Automaton has 3993 states and 5023 transitions. Word has length 410 [2022-11-03 03:52:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:18,340 INFO L495 AbstractCegarLoop]: Abstraction has 3993 states and 5023 transitions. [2022-11-03 03:52:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:52:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3993 states and 5023 transitions. [2022-11-03 03:52:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 03:52:18,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:18,342 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:18,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:18,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:18,543 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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)] === [2022-11-03 03:52:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1294423544, now seen corresponding path program 1 times [2022-11-03 03:52:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:18,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877837464] [2022-11-03 03:52:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:18,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:18,547 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:18,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 03:52:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:20,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:52:20,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2022-11-03 03:52:20,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:52:20,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877837464] [2022-11-03 03:52:20,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877837464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:20,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:20,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:52:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207093517] [2022-11-03 03:52:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:20,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:52:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:52:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:52:20,712 INFO L87 Difference]: Start difference. First operand 3993 states and 5023 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 03:52:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:23,685 INFO L93 Difference]: Finished difference Result 8944 states and 11675 transitions. [2022-11-03 03:52:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:52:23,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) Word has length 410 [2022-11-03 03:52:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:23,701 INFO L225 Difference]: With dead ends: 8944 [2022-11-03 03:52:23,701 INFO L226 Difference]: Without dead ends: 5378 [2022-11-03 03:52:23,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:52:23,709 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 613 mSDsluCounter, 5803 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 7325 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:23,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 7325 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:52:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-11-03 03:52:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 4013. [2022-11-03 03:52:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4013 states, 2645 states have (on average 1.181852551984877) internal successors, (3126), 2701 states have internal predecessors, (3126), 941 states have call successors, (941), 408 states have call predecessors, (941), 421 states have return successors, (976), 928 states have call predecessors, (976), 938 states have call successors, (976) [2022-11-03 03:52:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 5043 transitions. [2022-11-03 03:52:25,241 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 5043 transitions. Word has length 410 [2022-11-03 03:52:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:25,241 INFO L495 AbstractCegarLoop]: Abstraction has 4013 states and 5043 transitions. [2022-11-03 03:52:25,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (49), 2 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 03:52:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 5043 transitions. [2022-11-03 03:52:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-03 03:52:25,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:25,245 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:25,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 03:52:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:52:25,445 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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)] === [2022-11-03 03:52:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1697947273, now seen corresponding path program 1 times [2022-11-03 03:52:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:52:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790863562] [2022-11-03 03:52:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:25,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:52:25,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:52:25,448 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:52:25,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 03:52:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:28,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:52:28,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:52:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 20 proven. 262 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-11-03 03:52:29,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:52:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2022-11-03 03:52:30,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:52:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790863562] [2022-11-03 03:52:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790863562] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:52:30,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:52:30,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-03 03:52:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070061260] [2022-11-03 03:52:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:52:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:52:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:52:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:52:30,966 INFO L87 Difference]: Start difference. First operand 4013 states and 5043 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 03:52:35,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:37,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:47,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:51,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:53,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:57,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:05,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:08,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:09,606 INFO L93 Difference]: Finished difference Result 8009 states and 10045 transitions. [2022-11-03 03:53:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:53:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 390 [2022-11-03 03:53:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:09,627 INFO L225 Difference]: With dead ends: 8009 [2022-11-03 03:53:09,627 INFO L226 Difference]: Without dead ends: 8007 [2022-11-03 03:53:09,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:53:09,632 INFO L413 NwaCegarLoop]: 2514 mSDtfsCounter, 2763 mSDsluCounter, 4896 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 567 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2992 SdHoareTripleChecker+Valid, 7410 SdHoareTripleChecker+Invalid, 5035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:09,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2992 Valid, 7410 Invalid, 5035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [567 Valid, 4459 Invalid, 9 Unknown, 0 Unchecked, 34.7s Time] [2022-11-03 03:53:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8007 states. [2022-11-03 03:53:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8007 to 7421. [2022-11-03 03:53:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 4883 states have (on average 1.1931189842310055) internal successors, (5826), 4996 states have internal predecessors, (5826), 1752 states have call successors, (1752), 746 states have call predecessors, (1752), 780 states have return successors, (1843), 1728 states have call predecessors, (1843), 1749 states have call successors, (1843) [2022-11-03 03:53:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 9421 transitions. [2022-11-03 03:53:12,460 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 9421 transitions. Word has length 390 [2022-11-03 03:53:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:12,461 INFO L495 AbstractCegarLoop]: Abstraction has 7421 states and 9421 transitions. [2022-11-03 03:53:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 03:53:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 9421 transitions. [2022-11-03 03:53:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-03 03:53:12,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:12,465 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:12,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:12,681 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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)] === [2022-11-03 03:53:12,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash 922127758, now seen corresponding path program 1 times [2022-11-03 03:53:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:12,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069609209] [2022-11-03 03:53:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:12,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:12,684 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:12,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 03:53:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:14,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:53:14,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2022-11-03 03:53:16,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2022-11-03 03:53:17,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069609209] [2022-11-03 03:53:17,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069609209] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:17,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:17,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 03:53:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385709320] [2022-11-03 03:53:17,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:17,519 INFO L87 Difference]: Start difference. First operand 7421 states and 9421 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:53:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:20,414 INFO L93 Difference]: Finished difference Result 7611 states and 9607 transitions. [2022-11-03 03:53:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 426 [2022-11-03 03:53:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:20,428 INFO L225 Difference]: With dead ends: 7611 [2022-11-03 03:53:20,428 INFO L226 Difference]: Without dead ends: 7609 [2022-11-03 03:53:20,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:53:20,431 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 1239 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:20,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 4191 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7609 states. [2022-11-03 03:53:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7609 to 7605. [2022-11-03 03:53:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 5012 states have (on average 1.1921388667198722) internal successors, (5975), 5125 states have internal predecessors, (5975), 1764 states have call successors, (1764), 789 states have call predecessors, (1764), 823 states have return successors, (1855), 1740 states have call predecessors, (1855), 1761 states have call successors, (1855) [2022-11-03 03:53:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 9594 transitions. [2022-11-03 03:53:23,662 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 9594 transitions. Word has length 426 [2022-11-03 03:53:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:23,662 INFO L495 AbstractCegarLoop]: Abstraction has 7605 states and 9594 transitions. [2022-11-03 03:53:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:53:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 9594 transitions. [2022-11-03 03:53:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-03 03:53:23,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:23,665 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:23,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:23,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:23,866 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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)] === [2022-11-03 03:53:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -412336782, now seen corresponding path program 1 times [2022-11-03 03:53:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:23,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736256900] [2022-11-03 03:53:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:23,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:23,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:23,868 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:23,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 03:53:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:53:26,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2022-11-03 03:53:27,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2022-11-03 03:53:28,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:28,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736256900] [2022-11-03 03:53:28,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736256900] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:28,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-03 03:53:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343133897] [2022-11-03 03:53:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:28,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:28,787 INFO L87 Difference]: Start difference. First operand 7605 states and 9594 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 03:53:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:31,777 INFO L93 Difference]: Finished difference Result 8284 states and 10162 transitions. [2022-11-03 03:53:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 444 [2022-11-03 03:53:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:31,790 INFO L225 Difference]: With dead ends: 8284 [2022-11-03 03:53:31,790 INFO L226 Difference]: Without dead ends: 8282 [2022-11-03 03:53:31,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:53:31,793 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 918 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:31,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 4720 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2022-11-03 03:53:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8228. [2022-11-03 03:53:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 5430 states have (on average 1.1773480662983424) internal successors, (6393), 5541 states have internal predecessors, (6393), 1802 states have call successors, (1802), 957 states have call predecessors, (1802), 991 states have return successors, (1888), 1779 states have call predecessors, (1888), 1799 states have call successors, (1888) [2022-11-03 03:53:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 10083 transitions. [2022-11-03 03:53:34,799 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 10083 transitions. Word has length 444 [2022-11-03 03:53:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:34,799 INFO L495 AbstractCegarLoop]: Abstraction has 8228 states and 10083 transitions. [2022-11-03 03:53:34,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 03:53:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 10083 transitions. [2022-11-03 03:53:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-03 03:53:34,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:34,802 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:34,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:35,003 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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)] === [2022-11-03 03:53:35,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:35,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1243439679, now seen corresponding path program 1 times [2022-11-03 03:53:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:35,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519155934] [2022-11-03 03:53:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:35,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:35,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:35,006 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 03:53:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:37,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:53:37,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2022-11-03 03:53:37,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:37,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:37,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519155934] [2022-11-03 03:53:37,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519155934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:37,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:37,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:53:37,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892366714] [2022-11-03 03:53:37,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:37,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:37,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:37,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:37,261 INFO L87 Difference]: Start difference. First operand 8228 states and 10083 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 03:53:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:40,764 INFO L93 Difference]: Finished difference Result 8232 states and 10085 transitions. [2022-11-03 03:53:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:40,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 444 [2022-11-03 03:53:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:40,777 INFO L225 Difference]: With dead ends: 8232 [2022-11-03 03:53:40,777 INFO L226 Difference]: Without dead ends: 8230 [2022-11-03 03:53:40,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:40,780 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 45 mSDsluCounter, 4073 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:40,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 5448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2022-11-03 03:53:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 8228. [2022-11-03 03:53:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8228 states, 5430 states have (on average 1.1740331491712708) internal successors, (6375), 5541 states have internal predecessors, (6375), 1802 states have call successors, (1802), 957 states have call predecessors, (1802), 991 states have return successors, (1888), 1779 states have call predecessors, (1888), 1799 states have call successors, (1888) [2022-11-03 03:53:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 10065 transitions. [2022-11-03 03:53:43,776 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 10065 transitions. Word has length 444 [2022-11-03 03:53:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:43,777 INFO L495 AbstractCegarLoop]: Abstraction has 8228 states and 10065 transitions. [2022-11-03 03:53:43,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 03:53:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 10065 transitions. [2022-11-03 03:53:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-03 03:53:43,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:43,780 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:43,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:43,981 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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)] === [2022-11-03 03:53:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1890401306, now seen corresponding path program 1 times [2022-11-03 03:53:43,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:43,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868179046] [2022-11-03 03:53:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:43,984 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:43,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 03:53:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:46,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:53:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1611 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2022-11-03 03:53:46,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:53:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1611 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2022-11-03 03:53:46,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868179046] [2022-11-03 03:53:46,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868179046] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:46,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:46,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-03 03:53:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42680115] [2022-11-03 03:53:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:46,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:53:46,759 INFO L87 Difference]: Start difference. First operand 8228 states and 10065 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 03:53:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:49,879 INFO L93 Difference]: Finished difference Result 8230 states and 10066 transitions. [2022-11-03 03:53:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 468 [2022-11-03 03:53:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:49,893 INFO L225 Difference]: With dead ends: 8230 [2022-11-03 03:53:49,893 INFO L226 Difference]: Without dead ends: 8228 [2022-11-03 03:53:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:53:49,896 INFO L413 NwaCegarLoop]: 1471 mSDtfsCounter, 480 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 5432 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-11-03 03:53:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8226. [2022-11-03 03:53:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 5429 states have (on average 1.170749677657027) internal successors, (6356), 5539 states have internal predecessors, (6356), 1802 states have call successors, (1802), 957 states have call predecessors, (1802), 991 states have return successors, (1888), 1779 states have call predecessors, (1888), 1799 states have call successors, (1888) [2022-11-03 03:53:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 10046 transitions. [2022-11-03 03:53:52,943 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 10046 transitions. Word has length 468 [2022-11-03 03:53:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:52,943 INFO L495 AbstractCegarLoop]: Abstraction has 8226 states and 10046 transitions. [2022-11-03 03:53:52,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (61), 3 states have call predecessors, (61), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 03:53:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 10046 transitions. [2022-11-03 03:53:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-03 03:53:52,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:52,950 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:52,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:53,157 INFO L420 AbstractCegarLoop]: === Iteration 49 === 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)] === [2022-11-03 03:53:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash -371476139, now seen corresponding path program 1 times [2022-11-03 03:53:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:53,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114831587] [2022-11-03 03:53:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:53,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:53,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:53,161 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:53,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 03:53:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:55,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:53:55,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2022-11-03 03:53:55,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:55,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114831587] [2022-11-03 03:53:55,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114831587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:55,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:55,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:53:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240961853] [2022-11-03 03:53:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:55,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:53:55,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:53:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:53:55,927 INFO L87 Difference]: Start difference. First operand 8226 states and 10046 transitions. Second operand has 12 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (63), 5 states have call predecessors, (63), 5 states have call successors, (63) [2022-11-03 03:54:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:01,277 INFO L93 Difference]: Finished difference Result 16243 states and 19943 transitions. [2022-11-03 03:54:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:54:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (63), 5 states have call predecessors, (63), 5 states have call successors, (63) Word has length 499 [2022-11-03 03:54:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:01,295 INFO L225 Difference]: With dead ends: 16243 [2022-11-03 03:54:01,295 INFO L226 Difference]: Without dead ends: 8751 [2022-11-03 03:54:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:54:01,305 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 162 mSDsluCounter, 14038 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 15479 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 15479 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:54:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-11-03 03:54:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 8290. [2022-11-03 03:54:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8290 states, 5477 states have (on average 1.1692532408252694) internal successors, (6404), 5587 states have internal predecessors, (6404), 1818 states have call successors, (1818), 957 states have call predecessors, (1818), 991 states have return successors, (1904), 1795 states have call predecessors, (1904), 1815 states have call successors, (1904) [2022-11-03 03:54:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8290 states to 8290 states and 10126 transitions. [2022-11-03 03:54:04,467 INFO L78 Accepts]: Start accepts. Automaton has 8290 states and 10126 transitions. Word has length 499 [2022-11-03 03:54:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 8290 states and 10126 transitions. [2022-11-03 03:54:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (63), 5 states have call predecessors, (63), 5 states have call successors, (63) [2022-11-03 03:54:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8290 states and 10126 transitions. [2022-11-03 03:54:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-03 03:54:04,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:04,475 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:04,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:04,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:04,675 INFO L420 AbstractCegarLoop]: === Iteration 50 === 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)] === [2022-11-03 03:54:04,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:04,676 INFO L85 PathProgramCache]: Analyzing trace with hash 820238296, now seen corresponding path program 1 times [2022-11-03 03:54:04,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535610307] [2022-11-03 03:54:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:04,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:04,678 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:04,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24552a5e-d35d-4da3-b3c8-39e9c951b389/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 03:54:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:07,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-11-03 03:54:07,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:07,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:07,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535610307] [2022-11-03 03:54:07,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535610307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:07,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:07,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 03:54:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990284643] [2022-11-03 03:54:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:07,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:54:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:54:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-03 03:54:07,626 INFO L87 Difference]: Start difference. First operand 8290 states and 10126 transitions. Second operand has 13 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 6 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75) [2022-11-03 03:54:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:13,914 INFO L93 Difference]: Finished difference Result 16467 states and 20231 transitions. [2022-11-03 03:54:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:54:13,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 6 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (75), 6 states have call predecessors, (75), 6 states have call successors, (75) Word has length 568 [2022-11-03 03:54:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:13,932 INFO L225 Difference]: With dead ends: 16467 [2022-11-03 03:54:13,932 INFO L226 Difference]: Without dead ends: 8911 [2022-11-03 03:54:13,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:54:13,942 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 186 mSDsluCounter, 15520 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 16974 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:13,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 16974 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 03:54:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states.