./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/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_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/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_a673f356-fcd9-4410-9355-36514552e85d/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 cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- 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 03:45:40,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:40,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:40,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:40,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:40,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:40,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:40,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:40,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:40,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:40,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:40,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:40,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:40,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:40,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:40,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:40,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:40,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:40,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:40,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:40,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:40,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:40,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:40,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:40,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:40,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:40,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:40,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:40,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:40,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:40,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:40,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:40,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:40,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:40,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:40,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:40,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:40,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:40,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:40,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:40,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:40,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:45:40,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:40,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:40,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:40,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:40,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:40,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:40,875 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:40,876 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:40,876 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:40,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:45:40,877 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:40,877 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:40,878 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:45:40,878 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:45:40,878 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:40,878 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:45:40,878 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:45:40,879 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:45:40,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:40,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:45:40,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:40,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:40,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:40,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:40,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:40,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:40,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:40,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:40,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:40,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:40,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:40,882 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:45:40,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:40,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:40,883 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:45:40,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:45:40,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:40,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:40,886 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_a673f356-fcd9-4410-9355-36514552e85d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2022-11-03 03:45:41,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:41,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:41,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:41,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:41,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:41,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-03 03:45:41,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/data/f4ab20b75/8a93cc2a0c1e4295a3bb2963579149a7/FLAG430406857 [2022-11-03 03:45:42,282 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:42,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-03 03:45:42,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/data/f4ab20b75/8a93cc2a0c1e4295a3bb2963579149a7/FLAG430406857 [2022-11-03 03:45:42,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/data/f4ab20b75/8a93cc2a0c1e4295a3bb2963579149a7 [2022-11-03 03:45:42,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:42,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:42,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:42,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:42,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:42,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5ee40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:42, skipping insertion in model container [2022-11-03 03:45:42,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:42" (1/1) ... [2022-11-03 03:45:42,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:42,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:45:45,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-03 03:45:45,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-03 03:45:45,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-03 03:45:45,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-03 03:45:45,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-03 03:45:45,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-03 03:45:45,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-03 03:45:45,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-03 03:45:45,722 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-03 03:45:45,722 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-03 03:45:45,723 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-03 03:45:45,723 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-03 03:45:45,724 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-03 03:45:45,724 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-03 03:45:45,724 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-03 03:45:45,725 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-03 03:45:45,725 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-03 03:45:45,726 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-03 03:45:45,727 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-03 03:45:45,727 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-03 03:45:45,727 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-03 03:45:45,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-03 03:45:45,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-03 03:45:45,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-03 03:45:45,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-03 03:45:45,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-03 03:45:45,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-03 03:45:45,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-03 03:45:45,741 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-03 03:45:45,743 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-03 03:45:45,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-03 03:45:45,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-03 03:45:45,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-03 03:45:45,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-03 03:45:45,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-03 03:45:45,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-03 03:45:45,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-03 03:45:45,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-03 03:45:45,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-03 03:45:45,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-03 03:45:45,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-03 03:45:45,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-03 03:45:45,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-03 03:45:45,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-03 03:45:45,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-03 03:45:45,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-03 03:45:45,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-03 03:45:45,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-03 03:45:45,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-03 03:45:45,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-03 03:45:45,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-03 03:45:45,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-03 03:45:45,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-03 03:45:45,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-03 03:45:45,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-03 03:45:45,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-03 03:45:45,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-03 03:45:45,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-03 03:45:45,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-03 03:45:45,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-03 03:45:45,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-03 03:45:45,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-03 03:45:45,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-03 03:45:45,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-03 03:45:45,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-03 03:45:45,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-03 03:45:45,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-03 03:45:45,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-03 03:45:45,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-03 03:45:45,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-03 03:45:45,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-03 03:45:45,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-03 03:45:45,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-03 03:45:45,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-03 03:45:45,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-03 03:45:45,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-03 03:45:45,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-03 03:45:45,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-03 03:45:45,800 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-03 03:45:45,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-03 03:45:45,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-03 03:45:45,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-03 03:45:45,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-03 03:45:45,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-03 03:45:45,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-03 03:45:45,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-03 03:45:45,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-03 03:45:45,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-03 03:45:45,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:45,859 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:45:46,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-03 03:45:46,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-03 03:45:46,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-03 03:45:46,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-03 03:45:46,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-03 03:45:46,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-03 03:45:46,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-03 03:45:46,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-03 03:45:46,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-03 03:45:46,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-03 03:45:46,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-03 03:45:46,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-03 03:45:46,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-03 03:45:46,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-03 03:45:46,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-03 03:45:46,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-03 03:45:46,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-03 03:45:46,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-03 03:45:46,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-03 03:45:46,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-03 03:45:46,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-03 03:45:46,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-03 03:45:46,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-03 03:45:46,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-03 03:45:46,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-03 03:45:46,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-03 03:45:46,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-03 03:45:46,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-03 03:45:46,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-03 03:45:46,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-03 03:45:46,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-03 03:45:46,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-03 03:45:46,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-03 03:45:46,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-03 03:45:46,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-03 03:45:46,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-03 03:45:46,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-03 03:45:46,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-03 03:45:46,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-03 03:45:46,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-03 03:45:46,282 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-03 03:45:46,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-03 03:45:46,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-03 03:45:46,306 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-03 03:45:46,306 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-03 03:45:46,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-03 03:45:46,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-03 03:45:46,308 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-03 03:45:46,309 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-03 03:45:46,309 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-03 03:45:46,309 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-03 03:45:46,310 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-03 03:45:46,310 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-03 03:45:46,311 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-03 03:45:46,312 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-03 03:45:46,313 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-03 03:45:46,316 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-03 03:45:46,316 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-03 03:45:46,317 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-03 03:45:46,317 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-03 03:45:46,319 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-03 03:45:46,320 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-03 03:45:46,325 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-03 03:45:46,326 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-03 03:45:46,326 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-03 03:45:46,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-03 03:45:46,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-03 03:45:46,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-03 03:45:46,334 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-03 03:45:46,334 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-03 03:45:46,335 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-03 03:45:46,336 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-03 03:45:46,337 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-03 03:45:46,337 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-03 03:45:46,338 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-03 03:45:46,338 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-03 03:45:46,338 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-03 03:45:46,339 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-03 03:45:46,340 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-03 03:45:46,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-03 03:45:46,346 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-03 03:45:46,347 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_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-03 03:45:46,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-03 03:45:46,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-03 03:45:46,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-03 03:45:46,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-03 03:45:46,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-03 03:45:46,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-03 03:45:46,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:45:46,542 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:45:46,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46 WrapperNode [2022-11-03 03:45:46,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:46,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:46,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:45:46,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:45:46,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,835 INFO L138 Inliner]: procedures = 554, calls = 1441, calls flagged for inlining = 247, calls inlined = 157, statements flattened = 3174 [2022-11-03 03:45:46,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:45:46,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:45:46,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:45:46,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:45:46,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:46,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:47,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:47,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:47,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:47,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:45:47,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:45:47,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:45:47,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:45:47,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (1/1) ... [2022-11-03 03:45:47,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:45:47,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:45:47,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:45:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2022-11-03 03:45:47,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2022-11-03 03:45:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:45:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-03 03:45:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:45:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:45:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:45:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-03 03:45:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2022-11-03 03:45:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2022-11-03 03:45:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:45:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:45:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:45:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-03 03:45:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2022-11-03 03:45:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2022-11-03 03:45:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:45:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-03 03:45:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2022-11-03 03:45:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2022-11-03 03:45:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:45:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:45:47,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:45:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:45:47,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:45:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-03 03:45:47,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:45:47,150 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2022-11-03 03:45:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2022-11-03 03:45:47,150 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:45:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:45:47,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:45:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-03 03:45:47,151 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2022-11-03 03:45:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2022-11-03 03:45:47,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:45:47,151 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-03 03:45:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-03 03:45:47,151 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2022-11-03 03:45:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2022-11-03 03:45:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:45:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-03 03:45:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-03 03:45:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-03 03:45:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-03 03:45:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-03 03:45:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-03 03:45:47,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:45:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:45:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2022-11-03 03:45:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2022-11-03 03:45:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:45:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-03 03:45:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2022-11-03 03:45:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2022-11-03 03:45:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:45:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:45:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-03 03:45:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-03 03:45:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-03 03:45:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:45:47,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-03 03:45:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 03:45:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 03:45:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 03:45:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 03:45:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:45:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-03 03:45:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:45:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-03 03:45:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2022-11-03 03:45:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2022-11-03 03:45:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:45:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2022-11-03 03:45:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2022-11-03 03:45:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:45:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:45:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:45:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:45:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-03 03:45:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-03 03:45:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:45:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:45:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2022-11-03 03:45:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2022-11-03 03:45:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2022-11-03 03:45:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2022-11-03 03:45:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-03 03:45:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-03 03:45:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:45:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-03 03:45:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:45:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:45:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:45:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:45:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:45:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2022-11-03 03:45:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2022-11-03 03:45:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 03:45:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 03:45:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 03:45:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 03:45:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-03 03:45:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-03 03:45:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 03:45:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 03:45:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-03 03:45:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-03 03:45:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2022-11-03 03:45:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2022-11-03 03:45:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:45:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-03 03:45:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-03 03:45:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-03 03:45:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:45:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-03 03:45:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2022-11-03 03:45:47,168 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2022-11-03 03:45:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:45:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2022-11-03 03:45:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-03 03:45:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:45:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2022-11-03 03:45:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2022-11-03 03:45:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:45:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-03 03:45:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:45:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:45:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-03 03:45:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-03 03:45:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2022-11-03 03:45:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2022-11-03 03:45:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:45:47,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:45:47,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-03 03:45:47,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:45:47,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:45:47,171 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:45:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:45:47,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-03 03:45:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:45:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:45:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-03 03:45:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-03 03:45:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:45:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-03 03:45:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:45:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:45:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2022-11-03 03:45:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:45:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:45:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 03:45:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2022-11-03 03:45:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:45:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2022-11-03 03:45:47,174 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2022-11-03 03:45:47,884 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:45:47,889 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:45:48,368 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:45:50,233 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:45:50,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:45:50,796 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-03 03:45:50,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:50 BoogieIcfgContainer [2022-11-03 03:45:50,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:45:50,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:45:50,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:45:50,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:45:50,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:42" (1/3) ... [2022-11-03 03:45:50,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d248263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:50, skipping insertion in model container [2022-11-03 03:45:50,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:46" (2/3) ... [2022-11-03 03:45:50,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d248263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:45:50, skipping insertion in model container [2022-11-03 03:45:50,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:45:50" (3/3) ... [2022-11-03 03:45:50,812 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-03 03:45:50,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:45:50,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-03 03:45:50,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:45:50,949 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;@7c72c6e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:45:50,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-03 03:45:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 941 states, 559 states have (on average 1.3470483005366727) internal successors, (753), 600 states have internal predecessors, (753), 281 states have call successors, (281), 80 states have call predecessors, (281), 79 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2022-11-03 03:45:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:45:50,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:50,976 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:50,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash -72558991, now seen corresponding path program 1 times [2022-11-03 03:45:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:50,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561735372] [2022-11-03 03:45:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:45:51,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:51,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561735372] [2022-11-03 03:45:51,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561735372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:51,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:51,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35128931] [2022-11-03 03:45:51,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:51,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:51,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:51,749 INFO L87 Difference]: Start difference. First operand has 941 states, 559 states have (on average 1.3470483005366727) internal successors, (753), 600 states have internal predecessors, (753), 281 states have call successors, (281), 80 states have call predecessors, (281), 79 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:45:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:52,926 INFO L93 Difference]: Finished difference Result 1745 states and 2481 transitions. [2022-11-03 03:45:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2022-11-03 03:45:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:52,960 INFO L225 Difference]: With dead ends: 1745 [2022-11-03 03:45:52,961 INFO L226 Difference]: Without dead ends: 819 [2022-11-03 03:45:52,972 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 03:45:52,977 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1054 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:52,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1814 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:45:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-03 03:45:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-03 03:45:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 474 states have (on average 1.238396624472574) internal successors, (587), 523 states have internal predecessors, (587), 236 states have call successors, (236), 79 states have call predecessors, (236), 78 states have return successors, (234), 232 states have call predecessors, (234), 234 states have call successors, (234) [2022-11-03 03:45:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1057 transitions. [2022-11-03 03:45:53,141 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1057 transitions. Word has length 38 [2022-11-03 03:45:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:53,143 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1057 transitions. [2022-11-03 03:45:53,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:45:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1057 transitions. [2022-11-03 03:45:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 03:45:53,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:53,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:53,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:45:53,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1425836187, now seen corresponding path program 1 times [2022-11-03 03:45:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:53,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774899004] [2022-11-03 03:45:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:53,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:45:53,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774899004] [2022-11-03 03:45:53,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774899004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:53,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:53,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:53,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856821789] [2022-11-03 03:45:53,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:53,517 INFO L87 Difference]: Start difference. First operand 819 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:45:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:55,148 INFO L93 Difference]: Finished difference Result 1483 states and 1908 transitions. [2022-11-03 03:45:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:45:55,151 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2022-11-03 03:45:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:55,159 INFO L225 Difference]: With dead ends: 1483 [2022-11-03 03:45:55,160 INFO L226 Difference]: Without dead ends: 1481 [2022-11-03 03:45:55,160 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 03:45:55,161 INFO L413 NwaCegarLoop]: 1167 mSDtfsCounter, 858 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:55,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3200 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 03:45:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2022-11-03 03:45:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1307. [2022-11-03 03:45:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 756 states have (on average 1.2328042328042328) internal successors, (932), 821 states have internal predecessors, (932), 388 states have call successors, (388), 133 states have call predecessors, (388), 132 states have return successors, (401), 381 states have call predecessors, (401), 386 states have call successors, (401) [2022-11-03 03:45:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1721 transitions. [2022-11-03 03:45:55,249 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1721 transitions. Word has length 43 [2022-11-03 03:45:55,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:55,250 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1721 transitions. [2022-11-03 03:45:55,250 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:45:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1721 transitions. [2022-11-03 03:45:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-03 03:45:55,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:55,252 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:45:55,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -661721421, now seen corresponding path program 1 times [2022-11-03 03:45:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934805320] [2022-11-03 03:45:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:45:55,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:55,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934805320] [2022-11-03 03:45:55,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934805320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:55,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:55,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845596717] [2022-11-03 03:45:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:55,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:55,532 INFO L87 Difference]: Start difference. First operand 1307 states and 1721 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:45:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:56,496 INFO L93 Difference]: Finished difference Result 1307 states and 1721 transitions. [2022-11-03 03:45:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2022-11-03 03:45:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:56,504 INFO L225 Difference]: With dead ends: 1307 [2022-11-03 03:45:56,505 INFO L226 Difference]: Without dead ends: 1305 [2022-11-03 03:45:56,506 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 03:45:56,507 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1036 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:56,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1784 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:45:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-03 03:45:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1305. [2022-11-03 03:45:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 755 states have (on average 1.2317880794701987) internal successors, (930), 819 states have internal predecessors, (930), 388 states have call successors, (388), 133 states have call predecessors, (388), 132 states have return successors, (401), 381 states have call predecessors, (401), 386 states have call successors, (401) [2022-11-03 03:45:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1719 transitions. [2022-11-03 03:45:56,594 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1719 transitions. Word has length 48 [2022-11-03 03:45:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:56,594 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1719 transitions. [2022-11-03 03:45:56,594 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:45:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1719 transitions. [2022-11-03 03:45:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:45:56,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:56,596 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:56,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:45:56,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1691561906, now seen corresponding path program 1 times [2022-11-03 03:45:56,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:56,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730959759] [2022-11-03 03:45:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:45:56,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:56,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730959759] [2022-11-03 03:45:56,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730959759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:56,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:56,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657163608] [2022-11-03 03:45:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:56,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:56,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:56,889 INFO L87 Difference]: Start difference. First operand 1305 states and 1719 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:45:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:58,088 INFO L93 Difference]: Finished difference Result 1721 states and 2195 transitions. [2022-11-03 03:45:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:45:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2022-11-03 03:45:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:58,102 INFO L225 Difference]: With dead ends: 1721 [2022-11-03 03:45:58,103 INFO L226 Difference]: Without dead ends: 1719 [2022-11-03 03:45:58,104 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 03:45:58,107 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1022 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:58,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2178 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:45:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-03 03:45:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1676. [2022-11-03 03:45:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 968 states have (on average 1.225206611570248) internal successors, (1186), 1038 states have internal predecessors, (1186), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:45:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2169 transitions. [2022-11-03 03:45:58,275 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2169 transitions. Word has length 53 [2022-11-03 03:45:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:58,276 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2169 transitions. [2022-11-03 03:45:58,277 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, (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 03:45:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2169 transitions. [2022-11-03 03:45:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-03 03:45:58,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:58,287 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:45:58,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -907063550, now seen corresponding path program 1 times [2022-11-03 03:45:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307937809] [2022-11-03 03:45:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:45:58,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:45:58,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307937809] [2022-11-03 03:45:58,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307937809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:58,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:58,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:45:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960039336] [2022-11-03 03:45:58,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:58,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:45:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:45:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:45:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:45:58,609 INFO L87 Difference]: Start difference. First operand 1676 states and 2169 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 03:45:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:59,651 INFO L93 Difference]: Finished difference Result 1676 states and 2169 transitions. [2022-11-03 03:45:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:45:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 58 [2022-11-03 03:45:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:59,660 INFO L225 Difference]: With dead ends: 1676 [2022-11-03 03:45:59,660 INFO L226 Difference]: Without dead ends: 1674 [2022-11-03 03:45:59,662 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 03:45:59,663 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1033 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:59,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1782 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:45:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-03 03:45:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2022-11-03 03:45:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 967 states have (on average 1.2233712512926578) internal successors, (1183), 1036 states have internal predecessors, (1183), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:45:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2166 transitions. [2022-11-03 03:45:59,794 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2166 transitions. Word has length 58 [2022-11-03 03:45:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:59,799 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2166 transitions. [2022-11-03 03:45:59,799 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, (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 03:45:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2166 transitions. [2022-11-03 03:45:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 03:45:59,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:59,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:45:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:45:59,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:45:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1437075313, now seen corresponding path program 1 times [2022-11-03 03:45:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:45:59,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36465730] [2022-11-03 03:45:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:45:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:00,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:00,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36465730] [2022-11-03 03:46:00,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36465730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:00,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:00,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54143101] [2022-11-03 03:46:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:00,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:00,094 INFO L87 Difference]: Start difference. First operand 1674 states and 2166 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:46:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:01,222 INFO L93 Difference]: Finished difference Result 1674 states and 2166 transitions. [2022-11-03 03:46:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2022-11-03 03:46:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:01,233 INFO L225 Difference]: With dead ends: 1674 [2022-11-03 03:46:01,233 INFO L226 Difference]: Without dead ends: 1672 [2022-11-03 03:46:01,234 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 03:46:01,235 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1030 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:01,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1778 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:46:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-03 03:46:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-03 03:46:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 966 states have (on average 1.2215320910973084) internal successors, (1180), 1034 states have internal predecessors, (1180), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2163 transitions. [2022-11-03 03:46:01,368 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2163 transitions. Word has length 63 [2022-11-03 03:46:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:01,368 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 2163 transitions. [2022-11-03 03:46:01,369 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, (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 03:46:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2163 transitions. [2022-11-03 03:46:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 03:46:01,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:01,372 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:01,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:46:01,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1805829050, now seen corresponding path program 1 times [2022-11-03 03:46:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:01,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233010267] [2022-11-03 03:46:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:01,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:01,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233010267] [2022-11-03 03:46:01,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233010267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:01,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:01,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179857586] [2022-11-03 03:46:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:01,642 INFO L87 Difference]: Start difference. First operand 1672 states and 2163 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 03:46:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:02,587 INFO L93 Difference]: Finished difference Result 1672 states and 2163 transitions. [2022-11-03 03:46:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 68 [2022-11-03 03:46:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:02,598 INFO L225 Difference]: With dead ends: 1672 [2022-11-03 03:46:02,598 INFO L226 Difference]: Without dead ends: 1670 [2022-11-03 03:46:02,603 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 03:46:02,604 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1027 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:02,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1774 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:46:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-11-03 03:46:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2022-11-03 03:46:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 965 states have (on average 1.2196891191709844) internal successors, (1177), 1032 states have internal predecessors, (1177), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2160 transitions. [2022-11-03 03:46:02,743 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2160 transitions. Word has length 68 [2022-11-03 03:46:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:02,744 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2160 transitions. [2022-11-03 03:46:02,744 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, (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 03:46:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2160 transitions. [2022-11-03 03:46:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 03:46:02,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:02,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:46:02,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -317745981, now seen corresponding path program 1 times [2022-11-03 03:46:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:02,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84344116] [2022-11-03 03:46:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:02,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:02,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84344116] [2022-11-03 03:46:02,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84344116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:02,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:02,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582152415] [2022-11-03 03:46:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:02,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:02,996 INFO L87 Difference]: Start difference. First operand 1670 states and 2160 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:46:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:03,917 INFO L93 Difference]: Finished difference Result 1670 states and 2160 transitions. [2022-11-03 03:46:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:03,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-03 03:46:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:03,927 INFO L225 Difference]: With dead ends: 1670 [2022-11-03 03:46:03,928 INFO L226 Difference]: Without dead ends: 1668 [2022-11-03 03:46:03,929 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 03:46:03,930 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 1028 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:03,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1766 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-03 03:46:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-11-03 03:46:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 964 states have (on average 1.2178423236514522) internal successors, (1174), 1030 states have internal predecessors, (1174), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2157 transitions. [2022-11-03 03:46:04,090 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2157 transitions. Word has length 73 [2022-11-03 03:46:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:04,092 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2157 transitions. [2022-11-03 03:46:04,092 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, (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 03:46:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2157 transitions. [2022-11-03 03:46:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 03:46:04,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:04,094 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:04,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:46:04,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash -411064634, now seen corresponding path program 1 times [2022-11-03 03:46:04,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:04,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70885066] [2022-11-03 03:46:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:04,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:04,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70885066] [2022-11-03 03:46:04,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70885066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:04,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:04,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174715868] [2022-11-03 03:46:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:04,307 INFO L87 Difference]: Start difference. First operand 1668 states and 2157 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 03:46:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:05,326 INFO L93 Difference]: Finished difference Result 1668 states and 2157 transitions. [2022-11-03 03:46:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 75 [2022-11-03 03:46:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:05,337 INFO L225 Difference]: With dead ends: 1668 [2022-11-03 03:46:05,337 INFO L226 Difference]: Without dead ends: 1666 [2022-11-03 03:46:05,340 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 03:46:05,342 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1020 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:05,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1766 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-03 03:46:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-11-03 03:46:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 963 states have (on average 1.2159916926272067) internal successors, (1171), 1028 states have internal predecessors, (1171), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2154 transitions. [2022-11-03 03:46:05,505 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2154 transitions. Word has length 75 [2022-11-03 03:46:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:05,505 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2154 transitions. [2022-11-03 03:46:05,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 03:46:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2154 transitions. [2022-11-03 03:46:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 03:46:05,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:05,513 INFO L195 NwaCegarLoop]: trace histogram [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 03:46:05,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:46:05,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:05,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1334497226, now seen corresponding path program 1 times [2022-11-03 03:46:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:05,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362540992] [2022-11-03 03:46:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:05,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:05,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:05,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362540992] [2022-11-03 03:46:05,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362540992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:05,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:05,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517533876] [2022-11-03 03:46:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:05,715 INFO L87 Difference]: Start difference. First operand 1666 states and 2154 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, (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 03:46:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:06,652 INFO L93 Difference]: Finished difference Result 1666 states and 2154 transitions. [2022-11-03 03:46:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:06,652 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, (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 80 [2022-11-03 03:46:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:06,661 INFO L225 Difference]: With dead ends: 1666 [2022-11-03 03:46:06,662 INFO L226 Difference]: Without dead ends: 1664 [2022-11-03 03:46:06,663 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 03:46:06,664 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1019 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:06,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1762 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:46:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-03 03:46:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2022-11-03 03:46:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 962 states have (on average 1.2141372141372142) internal successors, (1168), 1026 states have internal predecessors, (1168), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2151 transitions. [2022-11-03 03:46:06,828 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2151 transitions. Word has length 80 [2022-11-03 03:46:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:06,828 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2151 transitions. [2022-11-03 03:46:06,828 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, (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 03:46:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2151 transitions. [2022-11-03 03:46:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 03:46:06,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:06,830 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:46:06,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:06,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash -847188097, now seen corresponding path program 1 times [2022-11-03 03:46:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:06,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850286139] [2022-11-03 03:46:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:07,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850286139] [2022-11-03 03:46:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850286139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:07,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:07,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362980879] [2022-11-03 03:46:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:07,020 INFO L87 Difference]: Start difference. First operand 1664 states and 2151 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:46:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:08,007 INFO L93 Difference]: Finished difference Result 1664 states and 2151 transitions. [2022-11-03 03:46:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-03 03:46:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:08,017 INFO L225 Difference]: With dead ends: 1664 [2022-11-03 03:46:08,017 INFO L226 Difference]: Without dead ends: 1662 [2022-11-03 03:46:08,018 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 03:46:08,019 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 1016 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:08,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1758 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:46:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-03 03:46:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1662. [2022-11-03 03:46:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 961 states have (on average 1.2122788761706556) internal successors, (1165), 1024 states have internal predecessors, (1165), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2148 transitions. [2022-11-03 03:46:08,210 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2148 transitions. Word has length 85 [2022-11-03 03:46:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:08,210 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2148 transitions. [2022-11-03 03:46:08,211 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, (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 03:46:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2148 transitions. [2022-11-03 03:46:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 03:46:08,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:08,214 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:46:08,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash 817177368, now seen corresponding path program 1 times [2022-11-03 03:46:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:08,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870408667] [2022-11-03 03:46:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:08,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:08,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870408667] [2022-11-03 03:46:08,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870408667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:08,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:08,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218152089] [2022-11-03 03:46:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:08,456 INFO L87 Difference]: Start difference. First operand 1662 states and 2148 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:46:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:09,434 INFO L93 Difference]: Finished difference Result 1662 states and 2148 transitions. [2022-11-03 03:46:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-03 03:46:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:09,443 INFO L225 Difference]: With dead ends: 1662 [2022-11-03 03:46:09,444 INFO L226 Difference]: Without dead ends: 1660 [2022-11-03 03:46:09,445 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 03:46:09,446 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 1013 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:09,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1754 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2022-11-03 03:46:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1660. [2022-11-03 03:46:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 960 states have (on average 1.2104166666666667) internal successors, (1162), 1022 states have internal predecessors, (1162), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2145 transitions. [2022-11-03 03:46:09,634 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2145 transitions. Word has length 90 [2022-11-03 03:46:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:09,636 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2145 transitions. [2022-11-03 03:46:09,636 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, (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 03:46:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2145 transitions. [2022-11-03 03:46:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 03:46:09,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:09,639 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 03:46:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:46:09,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1227200249, now seen corresponding path program 1 times [2022-11-03 03:46:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377554283] [2022-11-03 03:46:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 03:46:10,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:10,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377554283] [2022-11-03 03:46:10,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377554283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:10,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:10,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:46:10,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276102887] [2022-11-03 03:46:10,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:10,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:46:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:46:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:10,610 INFO L87 Difference]: Start difference. First operand 1660 states and 2145 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:46:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:14,479 INFO L93 Difference]: Finished difference Result 2071 states and 2824 transitions. [2022-11-03 03:46:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:46:14,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-11-03 03:46:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:14,494 INFO L225 Difference]: With dead ends: 2071 [2022-11-03 03:46:14,494 INFO L226 Difference]: Without dead ends: 2069 [2022-11-03 03:46:14,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:14,497 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 1031 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:14,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 3779 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 03:46:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-03 03:46:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1658. [2022-11-03 03:46:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 959 states have (on average 1.2085505735140771) internal successors, (1159), 1020 states have internal predecessors, (1159), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2142 transitions. [2022-11-03 03:46:14,727 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2142 transitions. Word has length 114 [2022-11-03 03:46:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2142 transitions. [2022-11-03 03:46:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:46:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2142 transitions. [2022-11-03 03:46:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 03:46:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:14,730 INFO L195 NwaCegarLoop]: trace histogram [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 03:46:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:46:14,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash -766703649, now seen corresponding path program 1 times [2022-11-03 03:46:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821787066] [2022-11-03 03:46:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:14,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:14,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821787066] [2022-11-03 03:46:14,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821787066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:14,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:14,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421430377] [2022-11-03 03:46:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:14,972 INFO L87 Difference]: Start difference. First operand 1658 states and 2142 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:46:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:16,101 INFO L93 Difference]: Finished difference Result 1658 states and 2142 transitions. [2022-11-03 03:46:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-11-03 03:46:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:16,110 INFO L225 Difference]: With dead ends: 1658 [2022-11-03 03:46:16,110 INFO L226 Difference]: Without dead ends: 1656 [2022-11-03 03:46:16,112 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 03:46:16,112 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1008 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:16,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1746 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-11-03 03:46:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1656. [2022-11-03 03:46:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 958 states have (on average 1.2066805845511481) internal successors, (1156), 1018 states have internal predecessors, (1156), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2139 transitions. [2022-11-03 03:46:16,376 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2139 transitions. Word has length 95 [2022-11-03 03:46:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:16,377 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2139 transitions. [2022-11-03 03:46:16,377 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, (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 03:46:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2139 transitions. [2022-11-03 03:46:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 03:46:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:16,380 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 03:46:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:46:16,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -686814740, now seen corresponding path program 1 times [2022-11-03 03:46:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854773899] [2022-11-03 03:46:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 03:46:16,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854773899] [2022-11-03 03:46:16,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854773899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:16,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:16,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114073726] [2022-11-03 03:46:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:16,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:16,640 INFO L87 Difference]: Start difference. First operand 1656 states and 2139 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:46:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:17,502 INFO L93 Difference]: Finished difference Result 3284 states and 4252 transitions. [2022-11-03 03:46:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2022-11-03 03:46:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:17,512 INFO L225 Difference]: With dead ends: 3284 [2022-11-03 03:46:17,512 INFO L226 Difference]: Without dead ends: 1650 [2022-11-03 03:46:17,518 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 03:46:17,519 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 994 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:17,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 869 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:46:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-03 03:46:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-11-03 03:46:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 953 states have (on average 1.2035676810073452) internal successors, (1147), 1012 states have internal predecessors, (1147), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2130 transitions. [2022-11-03 03:46:17,772 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2130 transitions. Word has length 117 [2022-11-03 03:46:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:17,773 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2130 transitions. [2022-11-03 03:46:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 03:46:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2130 transitions. [2022-11-03 03:46:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 03:46:17,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:17,776 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:17,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:46:17,776 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1359350283, now seen corresponding path program 1 times [2022-11-03 03:46:17,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:17,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606544407] [2022-11-03 03:46:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:17,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:17,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606544407] [2022-11-03 03:46:17,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606544407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:17,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:17,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474838165] [2022-11-03 03:46:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:17,984 INFO L87 Difference]: Start difference. First operand 1650 states and 2130 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 03:46:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:19,086 INFO L93 Difference]: Finished difference Result 1650 states and 2130 transitions. [2022-11-03 03:46:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-03 03:46:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:19,095 INFO L225 Difference]: With dead ends: 1650 [2022-11-03 03:46:19,096 INFO L226 Difference]: Without dead ends: 1648 [2022-11-03 03:46:19,097 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 03:46:19,098 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1000 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:19,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1732 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-11-03 03:46:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-11-03 03:46:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 952 states have (on average 1.2016806722689075) internal successors, (1144), 1010 states have internal predecessors, (1144), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2127 transitions. [2022-11-03 03:46:19,336 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2127 transitions. Word has length 100 [2022-11-03 03:46:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:19,336 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2127 transitions. [2022-11-03 03:46:19,337 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, (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 03:46:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2127 transitions. [2022-11-03 03:46:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 03:46:19,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:19,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:19,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:46:19,339 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -813067699, now seen corresponding path program 1 times [2022-11-03 03:46:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:19,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698866540] [2022-11-03 03:46:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:19,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698866540] [2022-11-03 03:46:19,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698866540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:19,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:19,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:19,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043037189] [2022-11-03 03:46:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:19,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:19,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:19,559 INFO L87 Difference]: Start difference. First operand 1648 states and 2127 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:46:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:20,502 INFO L93 Difference]: Finished difference Result 1648 states and 2127 transitions. [2022-11-03 03:46:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2022-11-03 03:46:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:20,510 INFO L225 Difference]: With dead ends: 1648 [2022-11-03 03:46:20,510 INFO L226 Difference]: Without dead ends: 1646 [2022-11-03 03:46:20,511 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 03:46:20,512 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 997 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:20,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1728 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-03 03:46:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1646. [2022-11-03 03:46:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 951 states have (on average 1.199789695057834) internal successors, (1141), 1008 states have internal predecessors, (1141), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2124 transitions. [2022-11-03 03:46:20,759 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2124 transitions. Word has length 105 [2022-11-03 03:46:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:20,760 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2124 transitions. [2022-11-03 03:46:20,760 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, (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 03:46:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2124 transitions. [2022-11-03 03:46:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 03:46:20,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:20,763 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:20,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:46:20,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_block_request__double_getErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash 975979, now seen corresponding path program 1 times [2022-11-03 03:46:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175461976] [2022-11-03 03:46:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:20,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-03 03:46:21,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175461976] [2022-11-03 03:46:21,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175461976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:21,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:21,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:46:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662377524] [2022-11-03 03:46:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:46:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:46:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:21,032 INFO L87 Difference]: Start difference. First operand 1646 states and 2124 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 03:46:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:22,429 INFO L93 Difference]: Finished difference Result 1667 states and 2137 transitions. [2022-11-03 03:46:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:46:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 127 [2022-11-03 03:46:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:22,438 INFO L225 Difference]: With dead ends: 1667 [2022-11-03 03:46:22,438 INFO L226 Difference]: Without dead ends: 1665 [2022-11-03 03:46:22,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 03:46:22,439 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 977 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:22,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 3025 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:46:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-11-03 03:46:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1646. [2022-11-03 03:46:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 951 states have (on average 1.1976866456361726) internal successors, (1139), 1008 states have internal predecessors, (1139), 485 states have call successors, (485), 194 states have call predecessors, (485), 193 states have return successors, (498), 474 states have call predecessors, (498), 483 states have call successors, (498) [2022-11-03 03:46:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2122 transitions. [2022-11-03 03:46:22,711 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2122 transitions. Word has length 127 [2022-11-03 03:46:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:22,711 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2122 transitions. [2022-11-03 03:46:22,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 03:46:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2122 transitions. [2022-11-03 03:46:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 03:46:22,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:22,715 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:46:22,715 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2128218365, now seen corresponding path program 1 times [2022-11-03 03:46:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:22,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396282391] [2022-11-03 03:46:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-03 03:46:23,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:23,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396282391] [2022-11-03 03:46:23,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396282391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:23,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:23,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:46:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379840427] [2022-11-03 03:46:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:23,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:46:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:46:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:46:23,162 INFO L87 Difference]: Start difference. First operand 1646 states and 2122 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:46:24,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:24,551 INFO L93 Difference]: Finished difference Result 1690 states and 2164 transitions. [2022-11-03 03:46:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:46:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2022-11-03 03:46:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:24,575 INFO L225 Difference]: With dead ends: 1690 [2022-11-03 03:46:24,575 INFO L226 Difference]: Without dead ends: 1688 [2022-11-03 03:46:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 03:46:24,577 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 947 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:24,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2638 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:46:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-11-03 03:46:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2022-11-03 03:46:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 974 states have (on average 1.1930184804928132) internal successors, (1162), 1030 states have internal predecessors, (1162), 493 states have call successors, (493), 206 states have call predecessors, (493), 205 states have return successors, (506), 482 states have call predecessors, (506), 491 states have call successors, (506) [2022-11-03 03:46:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2161 transitions. [2022-11-03 03:46:24,856 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2161 transitions. Word has length 131 [2022-11-03 03:46:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:24,857 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2161 transitions. [2022-11-03 03:46:24,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:46:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2161 transitions. [2022-11-03 03:46:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 03:46:24,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:24,860 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:24,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:46:24,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash -574070957, now seen corresponding path program 1 times [2022-11-03 03:46:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:24,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036955321] [2022-11-03 03:46:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:24,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-03 03:46:25,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:25,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036955321] [2022-11-03 03:46:25,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036955321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:25,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:25,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 03:46:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422264943] [2022-11-03 03:46:25,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:46:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:46:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:46:25,592 INFO L87 Difference]: Start difference. First operand 1688 states and 2161 transitions. Second operand has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 03:46:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:31,556 INFO L93 Difference]: Finished difference Result 4334 states and 5873 transitions. [2022-11-03 03:46:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:46:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 132 [2022-11-03 03:46:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:31,570 INFO L225 Difference]: With dead ends: 4334 [2022-11-03 03:46:31,570 INFO L226 Difference]: Without dead ends: 2666 [2022-11-03 03:46:31,577 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 03:46:31,578 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 443 mSDsluCounter, 12479 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 12329 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:31,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 12329 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 03:46:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-11-03 03:46:31,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1700. [2022-11-03 03:46:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 982 states have (on average 1.1914460285132382) internal successors, (1170), 1038 states have internal predecessors, (1170), 497 states have call successors, (497), 206 states have call predecessors, (497), 205 states have return successors, (510), 486 states have call predecessors, (510), 495 states have call successors, (510) [2022-11-03 03:46:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2177 transitions. [2022-11-03 03:46:31,966 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2177 transitions. Word has length 132 [2022-11-03 03:46:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:31,966 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2177 transitions. [2022-11-03 03:46:31,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 03:46:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2177 transitions. [2022-11-03 03:46:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 03:46:31,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:31,970 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:46:31,970 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:31,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1951411581, now seen corresponding path program 1 times [2022-11-03 03:46:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073430431] [2022-11-03 03:46:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:32,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073430431] [2022-11-03 03:46:32,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073430431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:32,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:32,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:32,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702504806] [2022-11-03 03:46:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:32,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:32,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:32,298 INFO L87 Difference]: Start difference. First operand 1700 states and 2177 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:46:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:33,556 INFO L93 Difference]: Finished difference Result 1700 states and 2177 transitions. [2022-11-03 03:46:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 110 [2022-11-03 03:46:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:33,562 INFO L225 Difference]: With dead ends: 1700 [2022-11-03 03:46:33,562 INFO L226 Difference]: Without dead ends: 1698 [2022-11-03 03:46:33,563 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 03:46:33,564 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 992 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:33,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1720 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-11-03 03:46:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2022-11-03 03:46:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 981 states have (on average 1.1896024464831805) internal successors, (1167), 1036 states have internal predecessors, (1167), 497 states have call successors, (497), 206 states have call predecessors, (497), 205 states have return successors, (510), 486 states have call predecessors, (510), 495 states have call successors, (510) [2022-11-03 03:46:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2174 transitions. [2022-11-03 03:46:33,893 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2174 transitions. Word has length 110 [2022-11-03 03:46:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:33,894 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2174 transitions. [2022-11-03 03:46:33,894 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, (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 03:46:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2174 transitions. [2022-11-03 03:46:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 03:46:33,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:33,898 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:33,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 03:46:33,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:33,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1947417822, now seen corresponding path program 1 times [2022-11-03 03:46:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76978567] [2022-11-03 03:46:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-03 03:46:34,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:34,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76978567] [2022-11-03 03:46:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76978567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:34,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:34,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 03:46:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919639729] [2022-11-03 03:46:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:34,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:46:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:46:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:46:34,713 INFO L87 Difference]: Start difference. First operand 1698 states and 2174 transitions. Second operand has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 03:46:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:41,071 INFO L93 Difference]: Finished difference Result 4225 states and 5710 transitions. [2022-11-03 03:46:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 03:46:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 136 [2022-11-03 03:46:41,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:41,087 INFO L225 Difference]: With dead ends: 4225 [2022-11-03 03:46:41,088 INFO L226 Difference]: Without dead ends: 2547 [2022-11-03 03:46:41,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:46:41,095 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 618 mSDsluCounter, 12963 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 12612 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:41,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 12612 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 03:46:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-11-03 03:46:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1717. [2022-11-03 03:46:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 990 states have (on average 1.187878787878788) internal successors, (1176), 1044 states have internal predecessors, (1176), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-03 03:46:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2206 transitions. [2022-11-03 03:46:41,409 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2206 transitions. Word has length 136 [2022-11-03 03:46:41,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:41,410 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2206 transitions. [2022-11-03 03:46:41,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-03 03:46:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2206 transitions. [2022-11-03 03:46:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 03:46:41,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:41,413 INFO L195 NwaCegarLoop]: trace histogram [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 03:46:41,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 03:46:41,414 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:41,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:41,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1440836416, now seen corresponding path program 1 times [2022-11-03 03:46:41,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:41,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100985624] [2022-11-03 03:46:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:41,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:41,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100985624] [2022-11-03 03:46:41,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100985624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:41,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:41,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:41,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823319605] [2022-11-03 03:46:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:41,594 INFO L87 Difference]: Start difference. First operand 1717 states and 2206 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:46:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:42,859 INFO L93 Difference]: Finished difference Result 1717 states and 2206 transitions. [2022-11-03 03:46:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 115 [2022-11-03 03:46:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:42,865 INFO L225 Difference]: With dead ends: 1717 [2022-11-03 03:46:42,866 INFO L226 Difference]: Without dead ends: 1715 [2022-11-03 03:46:42,867 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 03:46:42,867 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 989 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:42,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1716 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-11-03 03:46:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2022-11-03 03:46:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 989 states have (on average 1.186046511627907) internal successors, (1173), 1042 states have internal predecessors, (1173), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-03 03:46:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2203 transitions. [2022-11-03 03:46:43,200 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2203 transitions. Word has length 115 [2022-11-03 03:46:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:43,201 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2203 transitions. [2022-11-03 03:46:43,201 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, (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 03:46:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2203 transitions. [2022-11-03 03:46:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-03 03:46:43,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:43,204 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:43,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 03:46:43,204 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:43,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2111674658, now seen corresponding path program 1 times [2022-11-03 03:46:43,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:43,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454760075] [2022-11-03 03:46:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:43,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:43,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:43,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454760075] [2022-11-03 03:46:43,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454760075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:43,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:43,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221097420] [2022-11-03 03:46:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:43,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:43,390 INFO L87 Difference]: Start difference. First operand 1715 states and 2203 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:46:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:44,382 INFO L93 Difference]: Finished difference Result 1715 states and 2203 transitions. [2022-11-03 03:46:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 120 [2022-11-03 03:46:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:44,388 INFO L225 Difference]: With dead ends: 1715 [2022-11-03 03:46:44,388 INFO L226 Difference]: Without dead ends: 1713 [2022-11-03 03:46:44,389 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 03:46:44,390 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 986 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:44,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1712 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:46:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-11-03 03:46:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2022-11-03 03:46:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 988 states have (on average 1.1842105263157894) internal successors, (1170), 1040 states have internal predecessors, (1170), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-03 03:46:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2200 transitions. [2022-11-03 03:46:44,690 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2200 transitions. Word has length 120 [2022-11-03 03:46:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:44,690 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2200 transitions. [2022-11-03 03:46:44,690 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, (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 03:46:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2200 transitions. [2022-11-03 03:46:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-03 03:46:44,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:44,692 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:44,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 03:46:44,693 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1613809332, now seen corresponding path program 1 times [2022-11-03 03:46:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:44,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596908820] [2022-11-03 03:46:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:44,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:44,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596908820] [2022-11-03 03:46:44,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596908820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:44,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:44,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981577840] [2022-11-03 03:46:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:44,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:44,877 INFO L87 Difference]: Start difference. First operand 1713 states and 2200 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:46:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:45,989 INFO L93 Difference]: Finished difference Result 1713 states and 2200 transitions. [2022-11-03 03:46:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 125 [2022-11-03 03:46:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:45,997 INFO L225 Difference]: With dead ends: 1713 [2022-11-03 03:46:45,997 INFO L226 Difference]: Without dead ends: 1711 [2022-11-03 03:46:45,999 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 03:46:45,999 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 983 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:45,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1708 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2022-11-03 03:46:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2022-11-03 03:46:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 987 states have (on average 1.182370820668693) internal successors, (1167), 1038 states have internal predecessors, (1167), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-03 03:46:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2197 transitions. [2022-11-03 03:46:46,401 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2197 transitions. Word has length 125 [2022-11-03 03:46:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:46,402 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2197 transitions. [2022-11-03 03:46:46,402 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, (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 03:46:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2197 transitions. [2022-11-03 03:46:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 03:46:46,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:46,404 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 03:46:46,405 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash 157000332, now seen corresponding path program 1 times [2022-11-03 03:46:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:46,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517141064] [2022-11-03 03:46:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:46,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517141064] [2022-11-03 03:46:46,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517141064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:46,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:46,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:46,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488713230] [2022-11-03 03:46:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:46,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:46,622 INFO L87 Difference]: Start difference. First operand 1711 states and 2197 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:46:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:47,665 INFO L93 Difference]: Finished difference Result 1711 states and 2197 transitions. [2022-11-03 03:46:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:47,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2022-11-03 03:46:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:47,672 INFO L225 Difference]: With dead ends: 1711 [2022-11-03 03:46:47,672 INFO L226 Difference]: Without dead ends: 1709 [2022-11-03 03:46:47,673 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 03:46:47,674 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 980 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:47,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1704 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:46:47,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-11-03 03:46:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2022-11-03 03:46:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 986 states have (on average 1.18052738336714) internal successors, (1164), 1036 states have internal predecessors, (1164), 507 states have call successors, (507), 206 states have call predecessors, (507), 205 states have return successors, (523), 497 states have call predecessors, (523), 505 states have call successors, (523) [2022-11-03 03:46:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2194 transitions. [2022-11-03 03:46:48,112 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2194 transitions. Word has length 130 [2022-11-03 03:46:48,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:48,112 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2194 transitions. [2022-11-03 03:46:48,113 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, (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 03:46:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2194 transitions. [2022-11-03 03:46:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:46:48,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:48,115 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 4, 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] [2022-11-03 03:46:48,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 03:46:48,116 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 532088618, now seen corresponding path program 1 times [2022-11-03 03:46:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:48,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291380151] [2022-11-03 03:46:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-03 03:46:48,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291380151] [2022-11-03 03:46:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291380151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124599314] [2022-11-03 03:46:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:48,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:48,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:46:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:49,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:46:49,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-03 03:46:49,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:49,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124599314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:49,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:49,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 14 [2022-11-03 03:46:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174346477] [2022-11-03 03:46:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:46:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:46:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:49,832 INFO L87 Difference]: Start difference. First operand 1709 states and 2194 transitions. Second operand has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-03 03:46:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:54,349 INFO L93 Difference]: Finished difference Result 2245 states and 2833 transitions. [2022-11-03 03:46:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:46:54,349 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 157 [2022-11-03 03:46:54,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:54,360 INFO L225 Difference]: With dead ends: 2245 [2022-11-03 03:46:54,360 INFO L226 Difference]: Without dead ends: 1742 [2022-11-03 03:46:54,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-03 03:46:54,363 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 21 mSDsluCounter, 8974 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:54,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8427 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 03:46:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-11-03 03:46:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1718. [2022-11-03 03:46:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 991 states have (on average 1.1796165489404642) internal successors, (1169), 1041 states have internal predecessors, (1169), 511 states have call successors, (511), 206 states have call predecessors, (511), 205 states have return successors, (527), 501 states have call predecessors, (527), 509 states have call successors, (527) [2022-11-03 03:46:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2207 transitions. [2022-11-03 03:46:54,784 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2207 transitions. Word has length 157 [2022-11-03 03:46:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:54,784 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2207 transitions. [2022-11-03 03:46:54,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.75) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-03 03:46:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2207 transitions. [2022-11-03 03:46:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 03:46:54,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:54,787 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 03:46:54,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 03:46:55,011 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1929643024, now seen corresponding path program 1 times [2022-11-03 03:46:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:55,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146834125] [2022-11-03 03:46:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:46:55,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:55,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146834125] [2022-11-03 03:46:55,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146834125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:55,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:55,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618136019] [2022-11-03 03:46:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:55,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:55,229 INFO L87 Difference]: Start difference. First operand 1718 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:46:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:56,773 INFO L93 Difference]: Finished difference Result 1718 states and 2207 transitions. [2022-11-03 03:46:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 135 [2022-11-03 03:46:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:56,780 INFO L225 Difference]: With dead ends: 1718 [2022-11-03 03:46:56,780 INFO L226 Difference]: Without dead ends: 1500 [2022-11-03 03:46:56,782 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 03:46:56,782 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 977 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:56,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1702 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:46:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-03 03:46:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2022-11-03 03:46:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 872 states have (on average 1.1972477064220184) internal successors, (1044), 918 states have internal predecessors, (1044), 449 states have call successors, (449), 171 states have call predecessors, (449), 169 states have return successors, (464), 441 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-03 03:46:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1957 transitions. [2022-11-03 03:46:57,017 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1957 transitions. Word has length 135 [2022-11-03 03:46:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:57,018 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 1957 transitions. [2022-11-03 03:46:57,018 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, (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 03:46:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1957 transitions. [2022-11-03 03:46:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 03:46:57,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:57,020 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 4, 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] [2022-11-03 03:46:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 03:46:57,021 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:46:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 748851737, now seen corresponding path program 1 times [2022-11-03 03:46:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340281939] [2022-11-03 03:46:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-03 03:46:57,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340281939] [2022-11-03 03:46:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340281939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053773060] [2022-11-03 03:46:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:57,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:57,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:46:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:58,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 03:46:58,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-03 03:46:58,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:58,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053773060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:58,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:58,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 14 [2022-11-03 03:46:58,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465958901] [2022-11-03 03:46:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:58,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:46:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:46:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:46:58,708 INFO L87 Difference]: Start difference. First operand 1500 states and 1957 transitions. Second operand has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-03 03:47:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:02,540 INFO L93 Difference]: Finished difference Result 1825 states and 2363 transitions. [2022-11-03 03:47:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:47:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 162 [2022-11-03 03:47:02,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:02,546 INFO L225 Difference]: With dead ends: 1825 [2022-11-03 03:47:02,547 INFO L226 Difference]: Without dead ends: 1500 [2022-11-03 03:47:02,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:47:02,549 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 17 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:02,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 7996 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 03:47:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-03 03:47:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2022-11-03 03:47:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 872 states have (on average 1.1961009174311927) internal successors, (1043), 917 states have internal predecessors, (1043), 449 states have call successors, (449), 171 states have call predecessors, (449), 169 states have return successors, (464), 441 states have call predecessors, (464), 446 states have call successors, (464) [2022-11-03 03:47:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1956 transitions. [2022-11-03 03:47:02,848 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1956 transitions. Word has length 162 [2022-11-03 03:47:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:02,849 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 1956 transitions. [2022-11-03 03:47:02,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.333333333333333) internal successors, (57), 11 states have internal predecessors, (57), 7 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-03 03:47:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1956 transitions. [2022-11-03 03:47:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-03 03:47:02,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:02,851 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 4, 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] [2022-11-03 03:47:02,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:03,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-03 03:47:03,079 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1165984503, now seen corresponding path program 1 times [2022-11-03 03:47:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934833888] [2022-11-03 03:47:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 03:47:04,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:04,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934833888] [2022-11-03 03:47:04,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934833888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:04,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:04,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 03:47:04,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754358408] [2022-11-03 03:47:04,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:04,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:47:04,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:47:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:04,051 INFO L87 Difference]: Start difference. First operand 1500 states and 1956 transitions. Second operand has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:47:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:08,196 INFO L93 Difference]: Finished difference Result 2298 states and 3134 transitions. [2022-11-03 03:47:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 03:47:08,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) Word has length 170 [2022-11-03 03:47:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:08,205 INFO L225 Difference]: With dead ends: 2298 [2022-11-03 03:47:08,206 INFO L226 Difference]: Without dead ends: 2296 [2022-11-03 03:47:08,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:47:08,208 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 357 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 7460 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:08,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 7460 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:47:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-11-03 03:47:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1782. [2022-11-03 03:47:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1030 states have (on average 1.1932038834951457) internal successors, (1229), 1081 states have internal predecessors, (1229), 533 states have call successors, (533), 207 states have call predecessors, (533), 209 states have return successors, (563), 525 states have call predecessors, (563), 530 states have call successors, (563) [2022-11-03 03:47:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2325 transitions. [2022-11-03 03:47:08,812 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2325 transitions. Word has length 170 [2022-11-03 03:47:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2325 transitions. [2022-11-03 03:47:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 5 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 03:47:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2325 transitions. [2022-11-03 03:47:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:47:08,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:08,816 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:47:08,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 03:47:08,816 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:08,817 INFO L85 PathProgramCache]: Analyzing trace with hash 205768644, now seen corresponding path program 1 times [2022-11-03 03:47:08,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:08,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905986977] [2022-11-03 03:47:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:08,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-03 03:47:09,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905986977] [2022-11-03 03:47:09,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905986977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487616993] [2022-11-03 03:47:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:09,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:09,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:09,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:09,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:47:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:10,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:47:10,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 03:47:10,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:10,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487616993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:10,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:10,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2022-11-03 03:47:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758280023] [2022-11-03 03:47:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:10,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:10,624 INFO L87 Difference]: Start difference. First operand 1782 states and 2325 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:47:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:13,586 INFO L93 Difference]: Finished difference Result 2715 states and 3660 transitions. [2022-11-03 03:47:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 183 [2022-11-03 03:47:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:13,595 INFO L225 Difference]: With dead ends: 2715 [2022-11-03 03:47:13,595 INFO L226 Difference]: Without dead ends: 2243 [2022-11-03 03:47:13,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:13,599 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 210 mSDsluCounter, 4666 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:13,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 4741 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 03:47:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2022-11-03 03:47:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1784. [2022-11-03 03:47:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1032 states have (on average 1.192829457364341) internal successors, (1231), 1083 states have internal predecessors, (1231), 533 states have call successors, (533), 207 states have call predecessors, (533), 209 states have return successors, (563), 525 states have call predecessors, (563), 530 states have call successors, (563) [2022-11-03 03:47:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2327 transitions. [2022-11-03 03:47:14,100 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2327 transitions. Word has length 183 [2022-11-03 03:47:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:14,100 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2327 transitions. [2022-11-03 03:47:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:47:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2327 transitions. [2022-11-03 03:47:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 03:47:14,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:14,103 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:47:14,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:14,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-03 03:47:14,330 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash -91656930, now seen corresponding path program 1 times [2022-11-03 03:47:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:14,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689641089] [2022-11-03 03:47:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-03 03:47:15,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689641089] [2022-11-03 03:47:15,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689641089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053972453] [2022-11-03 03:47:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:15,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:15,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:15,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:47:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:16,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 03:47:16,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-03 03:47:16,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:16,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053972453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:16,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:16,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 16 [2022-11-03 03:47:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626644659] [2022-11-03 03:47:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:16,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:47:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:47:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:47:16,427 INFO L87 Difference]: Start difference. First operand 1784 states and 2327 transitions. Second operand has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-03 03:47:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:20,358 INFO L93 Difference]: Finished difference Result 2722 states and 3513 transitions. [2022-11-03 03:47:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:47:20,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 190 [2022-11-03 03:47:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:20,364 INFO L225 Difference]: With dead ends: 2722 [2022-11-03 03:47:20,364 INFO L226 Difference]: Without dead ends: 1788 [2022-11-03 03:47:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:47:20,368 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 28 mSDsluCounter, 8676 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8013 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8013 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 03:47:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-03 03:47:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1782. [2022-11-03 03:47:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1031 states have (on average 1.1910766246362754) internal successors, (1228), 1082 states have internal predecessors, (1228), 534 states have call successors, (534), 205 states have call predecessors, (534), 207 states have return successors, (564), 526 states have call predecessors, (564), 531 states have call successors, (564) [2022-11-03 03:47:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2326 transitions. [2022-11-03 03:47:20,794 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2326 transitions. Word has length 190 [2022-11-03 03:47:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2326 transitions. [2022-11-03 03:47:20,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 7 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-03 03:47:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2326 transitions. [2022-11-03 03:47:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-03 03:47:20,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:20,798 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-03 03:47:20,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:21,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-03 03:47:21,011 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash -248238889, now seen corresponding path program 1 times [2022-11-03 03:47:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:21,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269715992] [2022-11-03 03:47:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-03 03:47:21,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269715992] [2022-11-03 03:47:21,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269715992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:21,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:21,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178499707] [2022-11-03 03:47:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:21,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:21,442 INFO L87 Difference]: Start difference. First operand 1782 states and 2326 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:47:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:23,733 INFO L93 Difference]: Finished difference Result 2316 states and 3158 transitions. [2022-11-03 03:47:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:23,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 202 [2022-11-03 03:47:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:23,743 INFO L225 Difference]: With dead ends: 2316 [2022-11-03 03:47:23,744 INFO L226 Difference]: Without dead ends: 2314 [2022-11-03 03:47:23,745 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 03:47:23,746 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 971 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:23,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 3220 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 03:47:23,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-11-03 03:47:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1784. [2022-11-03 03:47:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1033 states have (on average 1.1907066795740562) internal successors, (1230), 1083 states have internal predecessors, (1230), 534 states have call successors, (534), 205 states have call predecessors, (534), 207 states have return successors, (564), 527 states have call predecessors, (564), 531 states have call successors, (564) [2022-11-03 03:47:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2328 transitions. [2022-11-03 03:47:24,226 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2328 transitions. Word has length 202 [2022-11-03 03:47:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:24,226 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2328 transitions. [2022-11-03 03:47:24,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:47:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2328 transitions. [2022-11-03 03:47:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-03 03:47:24,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:24,229 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-03 03:47:24,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 03:47:24,230 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1159833639, now seen corresponding path program 1 times [2022-11-03 03:47:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:24,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87181229] [2022-11-03 03:47:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:24,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-03 03:47:24,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:24,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87181229] [2022-11-03 03:47:24,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87181229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:24,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:24,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:24,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436294133] [2022-11-03 03:47:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:24,622 INFO L87 Difference]: Start difference. First operand 1784 states and 2328 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:47:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:27,401 INFO L93 Difference]: Finished difference Result 4012 states and 5370 transitions. [2022-11-03 03:47:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:47:27,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 213 [2022-11-03 03:47:27,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:27,411 INFO L225 Difference]: With dead ends: 4012 [2022-11-03 03:47:27,411 INFO L226 Difference]: Without dead ends: 2248 [2022-11-03 03:47:27,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:27,418 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 106 mSDsluCounter, 4060 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:27,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 4341 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:47:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-11-03 03:47:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1792. [2022-11-03 03:47:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1039 states have (on average 1.1896053897978827) internal successors, (1236), 1089 states have internal predecessors, (1236), 534 states have call successors, (534), 205 states have call predecessors, (534), 209 states have return successors, (568), 529 states have call predecessors, (568), 531 states have call successors, (568) [2022-11-03 03:47:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2338 transitions. [2022-11-03 03:47:27,916 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2338 transitions. Word has length 213 [2022-11-03 03:47:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:27,917 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2338 transitions. [2022-11-03 03:47:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 03:47:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2338 transitions. [2022-11-03 03:47:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-03 03:47:27,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:27,920 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 6, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-03 03:47:27,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 03:47:27,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1061426033, now seen corresponding path program 1 times [2022-11-03 03:47:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:27,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370711055] [2022-11-03 03:47:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-03 03:47:28,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370711055] [2022-11-03 03:47:28,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370711055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252591433] [2022-11-03 03:47:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:28,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:28,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:28,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:47:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:29,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:47:29,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-11-03 03:47:29,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:29,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252591433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:29,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:29,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-03 03:47:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076062556] [2022-11-03 03:47:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:29,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:47:29,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:47:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:47:29,982 INFO L87 Difference]: Start difference. First operand 1792 states and 2338 transitions. Second operand has 14 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-03 03:47:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:38,551 INFO L93 Difference]: Finished difference Result 4500 states and 6133 transitions. [2022-11-03 03:47:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 03:47:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) Word has length 228 [2022-11-03 03:47:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:38,562 INFO L225 Difference]: With dead ends: 4500 [2022-11-03 03:47:38,563 INFO L226 Difference]: Without dead ends: 2726 [2022-11-03 03:47:38,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2022-11-03 03:47:38,570 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 537 mSDsluCounter, 15170 mSDsCounter, 0 mSdLazyCounter, 3067 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 14162 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 3067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:38,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 14162 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 3067 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 03:47:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-11-03 03:47:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 1792. [2022-11-03 03:47:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1039 states have (on average 1.1896053897978827) internal successors, (1236), 1089 states have internal predecessors, (1236), 534 states have call successors, (534), 205 states have call predecessors, (534), 209 states have return successors, (568), 529 states have call predecessors, (568), 531 states have call successors, (568) [2022-11-03 03:47:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2338 transitions. [2022-11-03 03:47:39,115 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2338 transitions. Word has length 228 [2022-11-03 03:47:39,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:39,116 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2338 transitions. [2022-11-03 03:47:39,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 6 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-03 03:47:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2338 transitions. [2022-11-03 03:47:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-03 03:47:39,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:39,119 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:47:39,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:39,347 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1051051382, now seen corresponding path program 1 times [2022-11-03 03:47:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:39,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395226541] [2022-11-03 03:47:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-03 03:47:39,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:39,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395226541] [2022-11-03 03:47:39,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395226541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:39,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:39,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:39,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939390081] [2022-11-03 03:47:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:39,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:39,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:39,624 INFO L87 Difference]: Start difference. First operand 1792 states and 2338 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 03:47:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:41,031 INFO L93 Difference]: Finished difference Result 3630 states and 4763 transitions. [2022-11-03 03:47:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:41,032 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), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 244 [2022-11-03 03:47:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:41,039 INFO L225 Difference]: With dead ends: 3630 [2022-11-03 03:47:41,039 INFO L226 Difference]: Without dead ends: 1858 [2022-11-03 03:47:41,045 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 03:47:41,046 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 38 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:41,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2240 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:47:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-11-03 03:47:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1824. [2022-11-03 03:47:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1059 states have (on average 1.1935788479697829) internal successors, (1264), 1113 states have internal predecessors, (1264), 546 states have call successors, (546), 205 states have call predecessors, (546), 209 states have return successors, (580), 541 states have call predecessors, (580), 543 states have call successors, (580) [2022-11-03 03:47:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2390 transitions. [2022-11-03 03:47:41,451 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2390 transitions. Word has length 244 [2022-11-03 03:47:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:41,452 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2390 transitions. [2022-11-03 03:47:41,452 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), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 03:47:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2390 transitions. [2022-11-03 03:47:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 03:47:41,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:41,455 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 03:47:41,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-03 03:47:41,456 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1281125141, now seen corresponding path program 1 times [2022-11-03 03:47:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:41,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827279033] [2022-11-03 03:47:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-03 03:47:41,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827279033] [2022-11-03 03:47:41,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827279033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:41,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:41,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:47:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454311083] [2022-11-03 03:47:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:41,859 INFO L87 Difference]: Start difference. First operand 1824 states and 2390 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 03:47:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:44,725 INFO L93 Difference]: Finished difference Result 4122 states and 5552 transitions. [2022-11-03 03:47:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:47:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 248 [2022-11-03 03:47:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:44,730 INFO L225 Difference]: With dead ends: 4122 [2022-11-03 03:47:44,730 INFO L226 Difference]: Without dead ends: 2318 [2022-11-03 03:47:44,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:44,736 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 141 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 5298 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:44,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 5298 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 03:47:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-11-03 03:47:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1836. [2022-11-03 03:47:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1067 states have (on average 1.1921274601686973) internal successors, (1272), 1121 states have internal predecessors, (1272), 548 states have call successors, (548), 205 states have call predecessors, (548), 211 states have return successors, (586), 545 states have call predecessors, (586), 545 states have call successors, (586) [2022-11-03 03:47:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2406 transitions. [2022-11-03 03:47:45,119 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2406 transitions. Word has length 248 [2022-11-03 03:47:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:45,119 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2406 transitions. [2022-11-03 03:47:45,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 03:47:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2406 transitions. [2022-11-03 03:47:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-03 03:47:45,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:45,123 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-03 03:47:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-03 03:47:45,123 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1577136097, now seen corresponding path program 1 times [2022-11-03 03:47:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287315326] [2022-11-03 03:47:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-03 03:47:46,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:46,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287315326] [2022-11-03 03:47:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287315326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339231758] [2022-11-03 03:47:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:46,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:46,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:47:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:47:46,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-03 03:47:47,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:47,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339231758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:47,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:47,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2022-11-03 03:47:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832971963] [2022-11-03 03:47:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:47,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:47:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:47:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:47:47,285 INFO L87 Difference]: Start difference. First operand 1836 states and 2406 transitions. Second operand has 15 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 7 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-03 03:47:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:56,533 INFO L93 Difference]: Finished difference Result 4618 states and 6325 transitions. [2022-11-03 03:47:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:47:56,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 7 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 263 [2022-11-03 03:47:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:56,542 INFO L225 Difference]: With dead ends: 4618 [2022-11-03 03:47:56,542 INFO L226 Difference]: Without dead ends: 2800 [2022-11-03 03:47:56,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:47:56,547 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 572 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 15550 SdHoareTripleChecker+Invalid, 3814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:56,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 15550 Invalid, 3814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 03:47:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2022-11-03 03:47:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1828. [2022-11-03 03:47:57,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1061 states have (on average 1.1932139491046183) internal successors, (1266), 1115 states have internal predecessors, (1266), 548 states have call successors, (548), 205 states have call predecessors, (548), 209 states have return successors, (582), 543 states have call predecessors, (582), 545 states have call successors, (582) [2022-11-03 03:47:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2396 transitions. [2022-11-03 03:47:57,090 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2396 transitions. Word has length 263 [2022-11-03 03:47:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:57,091 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2396 transitions. [2022-11-03 03:47:57,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 13 states have internal predecessors, (85), 7 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-03 03:47:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2396 transitions. [2022-11-03 03:47:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 03:47:57,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:57,094 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:57,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:57,311 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_linux_block_genhd_put_diskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:47:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1453831777, now seen corresponding path program 1 times [2022-11-03 03:47:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:57,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580470642] [2022-11-03 03:47:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:57,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-03 03:47:58,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:58,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580470642] [2022-11-03 03:47:58,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580470642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:58,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691291704] [2022-11-03 03:47:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:58,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:58,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:58,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:58,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:47:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:59,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:47:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-03 03:47:59,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:59,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691291704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:59,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:59,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-03 03:47:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131190805] [2022-11-03 03:47:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:59,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:59,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:59,765 INFO L87 Difference]: Start difference. First operand 1828 states and 2396 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 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 03:48:01,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:01,673 INFO L93 Difference]: Finished difference Result 5315 states and 6935 transitions. [2022-11-03 03:48:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:48:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 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 261 [2022-11-03 03:48:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:01,682 INFO L225 Difference]: With dead ends: 5315 [2022-11-03 03:48:01,682 INFO L226 Difference]: Without dead ends: 3507 [2022-11-03 03:48:01,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:48:01,687 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 597 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:01,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1640 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:48:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-11-03 03:48:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3433. [2022-11-03 03:48:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 1985 states have (on average 1.1944584382871537) internal successors, (2371), 2082 states have internal predecessors, (2371), 1032 states have call successors, (1032), 396 states have call predecessors, (1032), 406 states have return successors, (1097), 1024 states have call predecessors, (1097), 1029 states have call successors, (1097) [2022-11-03 03:48:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 4500 transitions. [2022-11-03 03:48:02,355 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 4500 transitions. Word has length 261 [2022-11-03 03:48:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:02,355 INFO L495 AbstractCegarLoop]: Abstraction has 3433 states and 4500 transitions. [2022-11-03 03:48:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (29), 2 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 03:48:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 4500 transitions. [2022-11-03 03:48:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-03 03:48:02,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:02,358 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:02,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-03 03:48:02,572 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_linux_block_genhd_del_gendiskErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:48:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1434682222, now seen corresponding path program 1 times [2022-11-03 03:48:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:02,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422317319] [2022-11-03 03:48:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-03 03:48:03,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:03,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422317319] [2022-11-03 03:48:03,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422317319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:03,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893164640] [2022-11-03 03:48:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:03,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:03,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:48:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:04,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 03:48:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-03 03:48:04,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:48:04,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893164640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:48:04,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:48:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2022-11-03 03:48:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620549223] [2022-11-03 03:48:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:48:04,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:48:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:48:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:48:04,731 INFO L87 Difference]: Start difference. First operand 3433 states and 4500 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 03:48:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:08,575 INFO L93 Difference]: Finished difference Result 7572 states and 10169 transitions. [2022-11-03 03:48:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:48:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 266 [2022-11-03 03:48:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:08,585 INFO L225 Difference]: With dead ends: 7572 [2022-11-03 03:48:08,585 INFO L226 Difference]: Without dead ends: 4159 [2022-11-03 03:48:08,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:48:08,594 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 66 mSDsluCounter, 6148 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6087 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:08,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 6087 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 03:48:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2022-11-03 03:48:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 3457. [2022-11-03 03:48:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 2001 states have (on average 1.192903548225887) internal successors, (2387), 2094 states have internal predecessors, (2387), 1036 states have call successors, (1036), 396 states have call predecessors, (1036), 410 states have return successors, (1137), 1036 states have call predecessors, (1137), 1033 states have call successors, (1137) [2022-11-03 03:48:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 4560 transitions. [2022-11-03 03:48:09,516 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 4560 transitions. Word has length 266 [2022-11-03 03:48:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:09,516 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 4560 transitions. [2022-11-03 03:48:09,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 03:48:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 4560 transitions. [2022-11-03 03:48:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-03 03:48:09,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:09,519 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 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] [2022-11-03 03:48:09,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-03 03:48:09,735 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_block_queue_blk_cleanup_queueErr0ASSERT_VIOLATIONERROR_FUNCTION (and 30 more)] === [2022-11-03 03:48:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1273672181, now seen corresponding path program 1 times [2022-11-03 03:48:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:09,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748458440] [2022-11-03 03:48:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2022-11-03 03:48:11,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:11,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748458440] [2022-11-03 03:48:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748458440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:11,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64972199] [2022-11-03 03:48:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:11,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:11,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:11,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:11,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a673f356-fcd9-4410-9355-36514552e85d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:48:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:12,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 03:48:12,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-03 03:48:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:48:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-03 03:48:13,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64972199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:48:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654867333] [2022-11-03 03:48:13,354 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-03 03:48:13,354 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:48:13,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:48:13,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:48:13,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:14,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 03:48:14,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-03 03:48:18,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:19,162 INFO L356 Elim1Store]: treesize reduction 352, result has 45.6 percent of original size [2022-11-03 03:48:19,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 597 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 34 case distinctions, treesize of input 182 treesize of output 410 [2022-11-03 03:48:19,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:21,043 INFO L356 Elim1Store]: treesize reduction 612, result has 33.4 percent of original size [2022-11-03 03:48:21,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 37 select indices, 37 select index equivalence classes, 632 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 68 case distinctions, treesize of input 192 treesize of output 433 [2022-11-03 03:48:37,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 03:48:37,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:48:38,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:38,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 37 select indices, 37 select index equivalence classes, 666 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 112 [2022-11-03 03:48:38,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:38,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 36 select indices, 36 select index equivalence classes, 631 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 109 [2022-11-03 03:48:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:41,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 36 select indices, 36 select index equivalence classes, 631 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 109 [2022-11-03 03:48:42,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:42,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 37 select indices, 37 select index equivalence classes, 666 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 112 [2022-11-03 03:48:49,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:49,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:50,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:50,937 INFO L356 Elim1Store]: treesize reduction 96, result has 48.1 percent of original size [2022-11-03 03:48:50,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 5057 treesize of output 4900 [2022-11-03 03:48:52,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,169 INFO L244 Elim1Store]: Index analysis took 161 ms [2022-11-03 03:48:52,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:52,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:52,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,023 INFO L356 Elim1Store]: treesize reduction 144, result has 41.0 percent of original size [2022-11-03 03:48:53,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 86 select indices, 86 select index equivalence classes, 390 disjoint index pairs (out of 3655 index pairs), introduced 86 new quantified variables, introduced 9 case distinctions, treesize of input 4997 treesize of output 4814 [2022-11-03 03:48:53,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:53,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:53,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:54,546 INFO L356 Elim1Store]: treesize reduction 124, result has 33.0 percent of original size [2022-11-03 03:48:54,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 4921 treesize of output 4736 [2022-11-03 03:53:31,382 WARN L234 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 1192 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:57:27,455 WARN L234 SmtUtils]: Spent 20.02s on a formula simplification that was a NOOP. DAG size: 1265 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:57:46,522 WARN L234 SmtUtils]: Spent 9.75s on a formula simplification that was a NOOP. DAG size: 1257 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)