./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 e04fb08f 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_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/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_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 16:30:03,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:30:03,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:30:03,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:30:03,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:30:03,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:30:03,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:30:03,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:30:03,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:30:03,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:30:03,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:30:03,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:30:03,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:30:03,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:30:03,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:30:03,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:30:03,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:30:03,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:30:03,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:30:03,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:30:03,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:30:03,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:30:03,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:30:03,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:30:03,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:30:03,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:30:03,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:30:03,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:30:03,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:30:03,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:30:03,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:30:03,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:30:03,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:30:03,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:30:03,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:30:03,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:30:03,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:30:03,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:30:03,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:30:03,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:30:03,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:30:03,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 16:30:03,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:30:03,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:30:03,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:30:03,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:30:03,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:30:03,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:30:03,900 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:30:03,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:30:03,901 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:30:03,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:30:03,901 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:30:03,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:30:03,901 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:30:03,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:30:03,902 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:30:03,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:30:03,902 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:30:03,902 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:30:03,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:30:03,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:30:03,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:30:03,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:30:03,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:30:03,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:30:03,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:30:03,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:30:03,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:30:03,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:30:03,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:30:03,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:30:03,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:30:03,906 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:30:03,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:30:03,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:30:03,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:30:03,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:30:03,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:30:03,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:30:03,908 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_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2022-11-16 16:30:04,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:30:04,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:30:04,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:30:04,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:30:04,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:30:04,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-16 16:30:04,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/data/5bd26c77c/b7edf7697517416cb5b2ab6ad9bf73ec/FLAGa5dd58641 [2022-11-16 16:30:05,359 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:30:05,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-16 16:30:05,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/data/5bd26c77c/b7edf7697517416cb5b2ab6ad9bf73ec/FLAGa5dd58641 [2022-11-16 16:30:05,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/data/5bd26c77c/b7edf7697517416cb5b2ab6ad9bf73ec [2022-11-16 16:30:05,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:30:05,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:30:05,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:30:05,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:30:05,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:30:05,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:30:05" (1/1) ... [2022-11-16 16:30:05,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d09595f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:05, skipping insertion in model container [2022-11-16 16:30:05,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:30:05" (1/1) ... [2022-11-16 16:30:05,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:30:05,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:30:08,872 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-16 16:30:08,877 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-16 16:30:08,877 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-16 16:30:08,878 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-16 16:30:08,879 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-16 16:30:08,880 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-16 16:30:08,881 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-16 16:30:08,881 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-16 16:30:08,883 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-16 16:30:08,883 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-16 16:30:08,884 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-16 16:30:08,911 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-16 16:30:08,911 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-16 16:30:08,912 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-16 16:30:08,912 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-16 16:30:08,913 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-16 16:30:08,913 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-16 16:30:08,914 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-16 16:30:08,915 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-16 16:30:08,915 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-16 16:30:08,916 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-16 16:30:08,916 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-16 16:30:08,917 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-16 16:30:08,917 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-16 16:30:08,918 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-16 16:30:08,918 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-16 16:30:08,923 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-16 16:30:08,924 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-16 16:30:08,924 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-16 16:30:08,925 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-16 16:30:08,926 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-16 16:30:08,927 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-16 16:30:08,927 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-16 16:30:08,928 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-16 16:30:08,928 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-16 16:30:08,929 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-16 16:30:08,929 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-16 16:30:08,929 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-16 16:30:08,930 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-16 16:30:08,930 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-16 16:30:08,931 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-16 16:30:08,932 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-16 16:30:08,932 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-16 16:30:08,933 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-16 16:30:08,933 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-16 16:30:08,934 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-16 16:30:08,935 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-16 16:30:08,935 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-16 16:30:08,936 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-16 16:30:08,936 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-16 16:30:08,937 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-16 16:30:08,937 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-16 16:30:08,938 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-16 16:30:08,938 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-16 16:30:08,939 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-16 16:30:08,940 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-16 16:30:08,940 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-16 16:30:08,941 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-16 16:30:08,941 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-16 16:30:08,942 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-16 16:30:08,942 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-16 16:30:08,943 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-16 16:30:08,943 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-16 16:30:08,944 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-16 16:30:08,944 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-16 16:30:08,945 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-16 16:30:08,946 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-16 16:30:08,946 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-16 16:30:08,947 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-16 16:30:08,948 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-16 16:30:08,948 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-16 16:30:08,949 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-16 16:30:08,949 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-16 16:30:08,950 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-16 16:30:08,951 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-16 16:30:08,951 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-16 16:30:08,952 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-16 16:30:08,953 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-16 16:30:08,953 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-16 16:30:08,954 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-16 16:30:08,955 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-16 16:30:08,956 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-16 16:30:08,956 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-16 16:30:08,957 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-16 16:30:08,958 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-16 16:30:08,958 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-16 16:30:08,959 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-16 16:30:08,960 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-16 16:30:08,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:30:09,006 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:30:09,381 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-16 16:30:09,382 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-16 16:30:09,383 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-16 16:30:09,384 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-16 16:30:09,384 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-16 16:30:09,385 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-16 16:30:09,386 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-16 16:30:09,386 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-16 16:30:09,386 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-16 16:30:09,387 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-16 16:30:09,388 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-16 16:30:09,389 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-16 16:30:09,389 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-16 16:30:09,390 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-16 16:30:09,391 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-16 16:30:09,392 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-16 16:30:09,392 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-16 16:30:09,393 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-16 16:30:09,393 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-16 16:30:09,394 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-16 16:30:09,395 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-16 16:30:09,395 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-16 16:30:09,396 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-16 16:30:09,397 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-16 16:30:09,398 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-16 16:30:09,398 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-16 16:30:09,399 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-16 16:30:09,400 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-16 16:30:09,400 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-16 16:30:09,401 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-16 16:30:09,401 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-16 16:30:09,402 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-16 16:30:09,404 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-16 16:30:09,404 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-16 16:30:09,405 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-16 16:30:09,406 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-16 16:30:09,406 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-16 16:30:09,408 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-16 16:30:09,408 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-16 16:30:09,408 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-16 16:30:09,410 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-16 16:30:09,410 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-16 16:30:09,411 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-16 16:30:09,411 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-16 16:30:09,412 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-16 16:30:09,413 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-16 16:30:09,413 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-16 16:30:09,413 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-16 16:30:09,415 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-16 16:30:09,415 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-16 16:30:09,416 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-16 16:30:09,417 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-16 16:30:09,417 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-16 16:30:09,418 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-16 16:30:09,419 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-16 16:30:09,421 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-16 16:30:09,425 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-16 16:30:09,426 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-16 16:30:09,427 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-16 16:30:09,427 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-16 16:30:09,429 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-16 16:30:09,429 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-16 16:30:09,431 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-16 16:30:09,437 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-16 16:30:09,437 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-16 16:30:09,443 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-16 16:30:09,443 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-16 16:30:09,444 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-16 16:30:09,444 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-16 16:30:09,445 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-16 16:30:09,445 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-16 16:30:09,447 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-16 16:30:09,447 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-16 16:30:09,448 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-16 16:30:09,448 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-16 16:30:09,449 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-16 16:30:09,449 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-16 16:30:09,449 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-16 16:30:09,451 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-16 16:30:09,452 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-16 16:30:09,453 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-16 16:30:09,454 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-16 16:30:09,455 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-16 16:30:09,456 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-16 16:30:09,456 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-16 16:30:09,457 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-16 16:30:09,457 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-16 16:30:09,458 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-16 16:30:09,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:30:09,675 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:30:09,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09 WrapperNode [2022-11-16 16:30:09,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:30:09,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:30:09,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:30:09,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:30:09,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:09,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:09,955 INFO L138 Inliner]: procedures = 554, calls = 1465, calls flagged for inlining = 247, calls inlined = 157, statements flattened = 3198 [2022-11-16 16:30:09,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:30:09,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:30:09,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:30:09,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:30:09,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:09,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:30:10,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:30:10,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:30:10,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:30:10,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (1/1) ... [2022-11-16 16:30:10,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:30:10,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:30:10,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:30:10,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:30:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2022-11-16 16:30:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2022-11-16 16:30:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-16 16:30:10,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-16 16:30:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 16:30:10,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 16:30:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-16 16:30:10,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-16 16:30:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2022-11-16 16:30:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2022-11-16 16:30:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-16 16:30:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-16 16:30:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-16 16:30:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-16 16:30:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2022-11-16 16:30:10,289 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2022-11-16 16:30:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-16 16:30:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-16 16:30:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2022-11-16 16:30:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2022-11-16 16:30:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-16 16:30:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-16 16:30:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 16:30:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 16:30:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-16 16:30:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-16 16:30:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:30:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2022-11-16 16:30:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2022-11-16 16:30:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 16:30:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 16:30:10,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-16 16:30:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-16 16:30:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2022-11-16 16:30:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2022-11-16 16:30:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 16:30:10,293 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-16 16:30:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-16 16:30:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2022-11-16 16:30:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2022-11-16 16:30:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 16:30:10,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-16 16:30:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-16 16:30:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-16 16:30:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-16 16:30:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-16 16:30:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-16 16:30:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-16 16:30:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-16 16:30:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2022-11-16 16:30:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2022-11-16 16:30:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-16 16:30:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-16 16:30:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2022-11-16 16:30:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2022-11-16 16:30:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:30:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-16 16:30:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-16 16:30:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-16 16:30:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-16 16:30:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-16 16:30:10,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-16 16:30:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-16 16:30:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-16 16:30:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-16 16:30:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-16 16:30:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-16 16:30:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-16 16:30:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-16 16:30:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-16 16:30:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2022-11-16 16:30:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2022-11-16 16:30:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:30:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2022-11-16 16:30:10,307 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2022-11-16 16:30:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:30:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 16:30:10,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 16:30:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:30:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-16 16:30:10,309 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-16 16:30:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 16:30:10,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 16:30:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2022-11-16 16:30:10,309 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2022-11-16 16:30:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2022-11-16 16:30:10,309 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2022-11-16 16:30:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-16 16:30:10,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-16 16:30:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-16 16:30:10,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-16 16:30:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:30:10,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:30:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 16:30:10,311 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 16:30:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 16:30:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 16:30:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 16:30:10,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 16:30:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-16 16:30:10,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-16 16:30:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2022-11-16 16:30:10,312 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2022-11-16 16:30:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-16 16:30:10,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-16 16:30:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-16 16:30:10,313 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-16 16:30:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-16 16:30:10,313 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-16 16:30:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-16 16:30:10,313 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-16 16:30:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-16 16:30:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-16 16:30:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2022-11-16 16:30:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2022-11-16 16:30:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-16 16:30:10,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-16 16:30:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-16 16:30:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-16 16:30:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-16 16:30:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-16 16:30:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2022-11-16 16:30:10,316 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2022-11-16 16:30:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:30:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-16 16:30:10,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-16 16:30:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2022-11-16 16:30:10,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2022-11-16 16:30:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-16 16:30:10,317 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-16 16:30:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:30:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:30:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2022-11-16 16:30:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2022-11-16 16:30:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-16 16:30:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-16 16:30:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-16 16:30:10,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-16 16:30:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-16 16:30:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-16 16:30:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2022-11-16 16:30:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2022-11-16 16:30:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-16 16:30:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-16 16:30:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-16 16:30:10,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-16 16:30:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-16 16:30:10,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-16 16:30:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-16 16:30:10,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-16 16:30:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 16:30:10,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 16:30:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:30:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-16 16:30:10,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-16 16:30:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 16:30:10,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 16:30:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-16 16:30:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-16 16:30:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-16 16:30:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-16 16:30:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-16 16:30:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-16 16:30:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2022-11-16 16:30:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2022-11-16 16:30:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-16 16:30:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-16 16:30:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-16 16:30:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-16 16:30:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-16 16:30:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-16 16:30:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2022-11-16 16:30:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2022-11-16 16:30:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:30:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2022-11-16 16:30:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2022-11-16 16:30:11,161 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:30:11,165 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:30:11,826 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 16:30:13,576 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:30:14,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:30:14,040 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-16 16:30:14,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:30:14 BoogieIcfgContainer [2022-11-16 16:30:14,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:30:14,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:30:14,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:30:14,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:30:14,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:30:05" (1/3) ... [2022-11-16 16:30:14,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788532d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:30:14, skipping insertion in model container [2022-11-16 16:30:14,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:30:09" (2/3) ... [2022-11-16 16:30:14,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788532d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:30:14, skipping insertion in model container [2022-11-16 16:30:14,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:30:14" (3/3) ... [2022-11-16 16:30:14,058 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-16 16:30:14,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:30:14,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 16:30:14,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:30:14,198 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;@676f8ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:30:14,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-16 16:30:14,207 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) [2022-11-16 16:30:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 16:30:14,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:14,220 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] [2022-11-16 16:30:14,221 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)] === [2022-11-16 16:30:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash -72558991, now seen corresponding path program 1 times [2022-11-16 16:30:14,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:14,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801407220] [2022-11-16 16:30:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:15,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:15,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801407220] [2022-11-16 16:30:15,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801407220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:15,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:15,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302761566] [2022-11-16 16:30:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:15,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:15,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:15,169 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) [2022-11-16 16:30:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:16,455 INFO L93 Difference]: Finished difference Result 1745 states and 2481 transitions. [2022-11-16 16:30:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:16,457 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 [2022-11-16 16:30:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:16,476 INFO L225 Difference]: With dead ends: 1745 [2022-11-16 16:30:16,477 INFO L226 Difference]: Without dead ends: 819 [2022-11-16 16:30:16,495 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 [2022-11-16 16:30:16,502 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1054 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1814 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 16:30:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-16 16:30:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-16 16:30:16,659 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) [2022-11-16 16:30:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1057 transitions. [2022-11-16 16:30:16,668 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1057 transitions. Word has length 38 [2022-11-16 16:30:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:16,669 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1057 transitions. [2022-11-16 16:30:16,669 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) [2022-11-16 16:30:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1057 transitions. [2022-11-16 16:30:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 16:30:16,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:16,672 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] [2022-11-16 16:30:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:30:16,673 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)] === [2022-11-16 16:30:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1425836187, now seen corresponding path program 1 times [2022-11-16 16:30:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:16,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350918867] [2022-11-16 16:30:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:16,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:16,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:16,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350918867] [2022-11-16 16:30:16,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350918867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:16,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:16,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711882017] [2022-11-16 16:30:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:16,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:16,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:16,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:16,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:16,989 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) [2022-11-16 16:30:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:18,801 INFO L93 Difference]: Finished difference Result 1483 states and 1908 transitions. [2022-11-16 16:30:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:30:18,801 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 [2022-11-16 16:30:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:18,812 INFO L225 Difference]: With dead ends: 1483 [2022-11-16 16:30:18,812 INFO L226 Difference]: Without dead ends: 1481 [2022-11-16 16:30:18,813 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 [2022-11-16 16:30:18,814 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 858 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:18,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3202 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 16:30:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2022-11-16 16:30:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1307. [2022-11-16 16:30:18,909 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) [2022-11-16 16:30:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1721 transitions. [2022-11-16 16:30:18,920 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1721 transitions. Word has length 43 [2022-11-16 16:30:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:18,921 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1721 transitions. [2022-11-16 16:30:18,921 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) [2022-11-16 16:30:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1721 transitions. [2022-11-16 16:30:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 16:30:18,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:18,932 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] [2022-11-16 16:30:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:30:18,932 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)] === [2022-11-16 16:30:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -661721421, now seen corresponding path program 1 times [2022-11-16 16:30:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:18,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155152922] [2022-11-16 16:30:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:19,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:19,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155152922] [2022-11-16 16:30:19,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155152922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:19,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:19,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5588208] [2022-11-16 16:30:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:19,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:19,234 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) [2022-11-16 16:30:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:20,559 INFO L93 Difference]: Finished difference Result 1307 states and 1721 transitions. [2022-11-16 16:30:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:20,560 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 [2022-11-16 16:30:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:20,571 INFO L225 Difference]: With dead ends: 1307 [2022-11-16 16:30:20,571 INFO L226 Difference]: Without dead ends: 1305 [2022-11-16 16:30:20,572 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 [2022-11-16 16:30:20,575 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1036 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:20,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1784 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 16:30:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-16 16:30:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1305. [2022-11-16 16:30:20,659 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) [2022-11-16 16:30:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1719 transitions. [2022-11-16 16:30:20,674 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1719 transitions. Word has length 48 [2022-11-16 16:30:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:20,675 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1719 transitions. [2022-11-16 16:30:20,676 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) [2022-11-16 16:30:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1719 transitions. [2022-11-16 16:30:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-16 16:30:20,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:20,680 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] [2022-11-16 16:30:20,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:30:20,681 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)] === [2022-11-16 16:30:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1691561906, now seen corresponding path program 1 times [2022-11-16 16:30:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:20,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681480999] [2022-11-16 16:30:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:20,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681480999] [2022-11-16 16:30:20,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681480999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:20,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:20,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061992901] [2022-11-16 16:30:20,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:20,943 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) [2022-11-16 16:30:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:22,186 INFO L93 Difference]: Finished difference Result 1721 states and 2195 transitions. [2022-11-16 16:30:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:30:22,187 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 [2022-11-16 16:30:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:22,198 INFO L225 Difference]: With dead ends: 1721 [2022-11-16 16:30:22,199 INFO L226 Difference]: Without dead ends: 1719 [2022-11-16 16:30:22,200 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 [2022-11-16 16:30:22,201 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1022 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:22,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2178 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 16:30:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-16 16:30:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1676. [2022-11-16 16:30:22,357 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) [2022-11-16 16:30:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2169 transitions. [2022-11-16 16:30:22,370 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2169 transitions. Word has length 53 [2022-11-16 16:30:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:22,371 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2169 transitions. [2022-11-16 16:30:22,371 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) [2022-11-16 16:30:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2169 transitions. [2022-11-16 16:30:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 16:30:22,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:22,373 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] [2022-11-16 16:30:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:30:22,374 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)] === [2022-11-16 16:30:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -907063550, now seen corresponding path program 1 times [2022-11-16 16:30:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:22,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347921161] [2022-11-16 16:30:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:22,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347921161] [2022-11-16 16:30:22,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347921161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:22,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:22,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:22,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130354644] [2022-11-16 16:30:22,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:22,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:22,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:22,598 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) [2022-11-16 16:30:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:23,681 INFO L93 Difference]: Finished difference Result 1676 states and 2169 transitions. [2022-11-16 16:30:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:23,682 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 [2022-11-16 16:30:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:23,693 INFO L225 Difference]: With dead ends: 1676 [2022-11-16 16:30:23,693 INFO L226 Difference]: Without dead ends: 1674 [2022-11-16 16:30:23,694 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 [2022-11-16 16:30:23,695 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1033 mSDsluCounter, 891 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 [2022-11-16 16:30:23,696 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] [2022-11-16 16:30:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-16 16:30:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2022-11-16 16:30:23,909 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) [2022-11-16 16:30:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2166 transitions. [2022-11-16 16:30:23,928 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2166 transitions. Word has length 58 [2022-11-16 16:30:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:23,929 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2166 transitions. [2022-11-16 16:30:23,929 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) [2022-11-16 16:30:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2166 transitions. [2022-11-16 16:30:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 16:30:23,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:23,932 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] [2022-11-16 16:30:23,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:30:23,932 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)] === [2022-11-16 16:30:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:23,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1437075313, now seen corresponding path program 1 times [2022-11-16 16:30:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:23,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655462174] [2022-11-16 16:30:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:24,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655462174] [2022-11-16 16:30:24,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655462174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:24,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:24,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376739497] [2022-11-16 16:30:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:24,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:24,208 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) [2022-11-16 16:30:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:25,534 INFO L93 Difference]: Finished difference Result 1674 states and 2166 transitions. [2022-11-16 16:30:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:25,534 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 [2022-11-16 16:30:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:25,545 INFO L225 Difference]: With dead ends: 1674 [2022-11-16 16:30:25,545 INFO L226 Difference]: Without dead ends: 1672 [2022-11-16 16:30:25,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:30:25,547 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1030 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:25,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1778 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 16:30:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-16 16:30:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-16 16:30:25,732 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) [2022-11-16 16:30:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2163 transitions. [2022-11-16 16:30:25,746 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2163 transitions. Word has length 63 [2022-11-16 16:30:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:25,747 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 2163 transitions. [2022-11-16 16:30:25,747 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) [2022-11-16 16:30:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2163 transitions. [2022-11-16 16:30:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 16:30:25,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:25,749 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] [2022-11-16 16:30:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:30:25,749 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)] === [2022-11-16 16:30:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1805829050, now seen corresponding path program 1 times [2022-11-16 16:30:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:25,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63050419] [2022-11-16 16:30:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:25,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:25,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63050419] [2022-11-16 16:30:25,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63050419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:25,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:25,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153670910] [2022-11-16 16:30:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:25,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:25,970 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) [2022-11-16 16:30:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:27,541 INFO L93 Difference]: Finished difference Result 1672 states and 2163 transitions. [2022-11-16 16:30:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:27,541 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 [2022-11-16 16:30:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:27,551 INFO L225 Difference]: With dead ends: 1672 [2022-11-16 16:30:27,551 INFO L226 Difference]: Without dead ends: 1670 [2022-11-16 16:30:27,552 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 [2022-11-16 16:30:27,553 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1027 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:27,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1774 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 16:30:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-11-16 16:30:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2022-11-16 16:30:27,730 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) [2022-11-16 16:30:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2160 transitions. [2022-11-16 16:30:27,745 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2160 transitions. Word has length 68 [2022-11-16 16:30:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:27,746 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2160 transitions. [2022-11-16 16:30:27,746 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) [2022-11-16 16:30:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2160 transitions. [2022-11-16 16:30:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 16:30:27,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:27,751 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] [2022-11-16 16:30:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:30:27,751 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)] === [2022-11-16 16:30:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -317745981, now seen corresponding path program 1 times [2022-11-16 16:30:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143075641] [2022-11-16 16:30:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:28,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:28,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143075641] [2022-11-16 16:30:28,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143075641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:28,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:28,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944911631] [2022-11-16 16:30:28,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:28,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:28,016 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) [2022-11-16 16:30:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:29,495 INFO L93 Difference]: Finished difference Result 1670 states and 2160 transitions. [2022-11-16 16:30:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:29,496 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 [2022-11-16 16:30:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:29,505 INFO L225 Difference]: With dead ends: 1670 [2022-11-16 16:30:29,506 INFO L226 Difference]: Without dead ends: 1668 [2022-11-16 16:30:29,507 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 [2022-11-16 16:30:29,508 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 1028 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:29,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1766 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 16:30:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-16 16:30:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-11-16 16:30:29,677 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) [2022-11-16 16:30:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2157 transitions. [2022-11-16 16:30:29,689 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2157 transitions. Word has length 73 [2022-11-16 16:30:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:29,691 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2157 transitions. [2022-11-16 16:30:29,691 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) [2022-11-16 16:30:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2157 transitions. [2022-11-16 16:30:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 16:30:29,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:29,693 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] [2022-11-16 16:30:29,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:30:29,693 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)] === [2022-11-16 16:30:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash -411064634, now seen corresponding path program 1 times [2022-11-16 16:30:29,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847934396] [2022-11-16 16:30:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:29,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:29,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:29,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847934396] [2022-11-16 16:30:29,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847934396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:29,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:29,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:29,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262466611] [2022-11-16 16:30:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:29,921 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) [2022-11-16 16:30:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:30,790 INFO L93 Difference]: Finished difference Result 1668 states and 2157 transitions. [2022-11-16 16:30:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:30,791 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 [2022-11-16 16:30:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:30,800 INFO L225 Difference]: With dead ends: 1668 [2022-11-16 16:30:30,800 INFO L226 Difference]: Without dead ends: 1666 [2022-11-16 16:30:30,802 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 [2022-11-16 16:30:30,803 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1020 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1766 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 16:30:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-16 16:30:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-11-16 16:30:31,008 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) [2022-11-16 16:30:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2154 transitions. [2022-11-16 16:30:31,019 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2154 transitions. Word has length 75 [2022-11-16 16:30:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2154 transitions. [2022-11-16 16:30:31,020 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) [2022-11-16 16:30:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2154 transitions. [2022-11-16 16:30:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 16:30:31,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:31,022 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] [2022-11-16 16:30:31,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 16:30:31,023 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)] === [2022-11-16 16:30:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1334497226, now seen corresponding path program 1 times [2022-11-16 16:30:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:31,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425168826] [2022-11-16 16:30:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:31,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:31,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425168826] [2022-11-16 16:30:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425168826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:31,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369051848] [2022-11-16 16:30:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:31,261 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) [2022-11-16 16:30:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:32,107 INFO L93 Difference]: Finished difference Result 1666 states and 2154 transitions. [2022-11-16 16:30:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:32,108 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 [2022-11-16 16:30:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:32,117 INFO L225 Difference]: With dead ends: 1666 [2022-11-16 16:30:32,118 INFO L226 Difference]: Without dead ends: 1664 [2022-11-16 16:30:32,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:30:32,120 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1019 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:32,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1762 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 16:30:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-16 16:30:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2022-11-16 16:30:32,315 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) [2022-11-16 16:30:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2151 transitions. [2022-11-16 16:30:32,333 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2151 transitions. Word has length 80 [2022-11-16 16:30:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:32,333 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2151 transitions. [2022-11-16 16:30:32,333 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) [2022-11-16 16:30:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2151 transitions. [2022-11-16 16:30:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 16:30:32,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:32,336 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] [2022-11-16 16:30:32,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 16:30:32,337 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)] === [2022-11-16 16:30:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash -847188097, now seen corresponding path program 1 times [2022-11-16 16:30:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:32,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676276024] [2022-11-16 16:30:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:32,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676276024] [2022-11-16 16:30:32,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676276024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:32,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:32,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:32,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771316196] [2022-11-16 16:30:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:32,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:32,544 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) [2022-11-16 16:30:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:33,604 INFO L93 Difference]: Finished difference Result 1664 states and 2151 transitions. [2022-11-16 16:30:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:33,605 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 [2022-11-16 16:30:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:33,614 INFO L225 Difference]: With dead ends: 1664 [2022-11-16 16:30:33,614 INFO L226 Difference]: Without dead ends: 1662 [2022-11-16 16:30:33,616 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 [2022-11-16 16:30:33,617 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 1016 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:33,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1758 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:30:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-16 16:30:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1662. [2022-11-16 16:30:33,795 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) [2022-11-16 16:30:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2148 transitions. [2022-11-16 16:30:33,864 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2148 transitions. Word has length 85 [2022-11-16 16:30:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:33,865 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2148 transitions. [2022-11-16 16:30:33,865 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) [2022-11-16 16:30:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2148 transitions. [2022-11-16 16:30:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 16:30:33,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:33,867 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] [2022-11-16 16:30:33,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 16:30:33,867 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)] === [2022-11-16 16:30:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 817177368, now seen corresponding path program 1 times [2022-11-16 16:30:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:33,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176439237] [2022-11-16 16:30:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:34,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176439237] [2022-11-16 16:30:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176439237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:34,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:34,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949594655] [2022-11-16 16:30:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:34,082 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) [2022-11-16 16:30:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:35,201 INFO L93 Difference]: Finished difference Result 1662 states and 2148 transitions. [2022-11-16 16:30:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:35,202 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 [2022-11-16 16:30:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:35,211 INFO L225 Difference]: With dead ends: 1662 [2022-11-16 16:30:35,211 INFO L226 Difference]: Without dead ends: 1660 [2022-11-16 16:30:35,213 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 [2022-11-16 16:30:35,214 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 1013 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:35,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1754 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:30:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2022-11-16 16:30:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1660. [2022-11-16 16:30:35,436 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) [2022-11-16 16:30:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2145 transitions. [2022-11-16 16:30:35,451 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2145 transitions. Word has length 90 [2022-11-16 16:30:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:35,452 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2145 transitions. [2022-11-16 16:30:35,453 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) [2022-11-16 16:30:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2145 transitions. [2022-11-16 16:30:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 16:30:35,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:35,457 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] [2022-11-16 16:30:35,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 16:30:35,457 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)] === [2022-11-16 16:30:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1227200249, now seen corresponding path program 1 times [2022-11-16 16:30:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:35,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777366885] [2022-11-16 16:30:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:35,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-16 16:30:36,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777366885] [2022-11-16 16:30:36,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777366885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:36,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:36,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:30:36,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594588436] [2022-11-16 16:30:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:30:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:30:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:30:36,373 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) [2022-11-16 16:30:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:40,700 INFO L93 Difference]: Finished difference Result 2071 states and 2824 transitions. [2022-11-16 16:30:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:30:40,701 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 [2022-11-16 16:30:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:40,721 INFO L225 Difference]: With dead ends: 2071 [2022-11-16 16:30:40,721 INFO L226 Difference]: Without dead ends: 2069 [2022-11-16 16:30:40,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:30:40,724 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 1287 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 3779 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 16:30:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-16 16:30:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1658. [2022-11-16 16:30:40,948 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) [2022-11-16 16:30:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2142 transitions. [2022-11-16 16:30:40,998 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2142 transitions. Word has length 114 [2022-11-16 16:30:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:40,999 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2142 transitions. [2022-11-16 16:30:40,999 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) [2022-11-16 16:30:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2142 transitions. [2022-11-16 16:30:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 16:30:41,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:41,004 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] [2022-11-16 16:30:41,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 16:30:41,004 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)] === [2022-11-16 16:30:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -766703649, now seen corresponding path program 1 times [2022-11-16 16:30:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:41,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932129203] [2022-11-16 16:30:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:41,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:41,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932129203] [2022-11-16 16:30:41,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932129203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:41,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:41,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:41,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970453694] [2022-11-16 16:30:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:41,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:41,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:41,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:41,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:41,250 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) [2022-11-16 16:30:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:42,453 INFO L93 Difference]: Finished difference Result 1658 states and 2142 transitions. [2022-11-16 16:30:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:42,453 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 [2022-11-16 16:30:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:42,462 INFO L225 Difference]: With dead ends: 1658 [2022-11-16 16:30:42,462 INFO L226 Difference]: Without dead ends: 1656 [2022-11-16 16:30:42,463 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 [2022-11-16 16:30:42,464 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1008 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:42,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1746 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 16:30:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-11-16 16:30:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1656. [2022-11-16 16:30:42,736 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) [2022-11-16 16:30:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2139 transitions. [2022-11-16 16:30:42,745 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2139 transitions. Word has length 95 [2022-11-16 16:30:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:42,746 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2139 transitions. [2022-11-16 16:30:42,746 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) [2022-11-16 16:30:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2139 transitions. [2022-11-16 16:30:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 16:30:42,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:42,749 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] [2022-11-16 16:30:42,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 16:30:42,749 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)] === [2022-11-16 16:30:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash -686814740, now seen corresponding path program 1 times [2022-11-16 16:30:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:42,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605882648] [2022-11-16 16:30:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-16 16:30:42,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:42,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605882648] [2022-11-16 16:30:42,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605882648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:42,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:42,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:30:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889071788] [2022-11-16 16:30:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:30:42,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:30:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:30:42,948 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) [2022-11-16 16:30:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:43,619 INFO L93 Difference]: Finished difference Result 3284 states and 4252 transitions. [2022-11-16 16:30:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:30:43,620 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 [2022-11-16 16:30:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:43,630 INFO L225 Difference]: With dead ends: 3284 [2022-11-16 16:30:43,630 INFO L226 Difference]: Without dead ends: 1650 [2022-11-16 16:30:43,636 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 [2022-11-16 16:30:43,637 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 994 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 869 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:30:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-16 16:30:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-11-16 16:30:43,887 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) [2022-11-16 16:30:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2130 transitions. [2022-11-16 16:30:43,895 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2130 transitions. Word has length 117 [2022-11-16 16:30:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:43,896 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2130 transitions. [2022-11-16 16:30:43,896 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) [2022-11-16 16:30:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2130 transitions. [2022-11-16 16:30:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 16:30:43,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:43,899 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] [2022-11-16 16:30:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 16:30:43,899 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)] === [2022-11-16 16:30:43,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1359350283, now seen corresponding path program 1 times [2022-11-16 16:30:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:43,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167497875] [2022-11-16 16:30:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:44,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:44,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167497875] [2022-11-16 16:30:44,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167497875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:44,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:44,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87870837] [2022-11-16 16:30:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:44,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:44,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:44,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:44,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:44,104 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) [2022-11-16 16:30:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:45,171 INFO L93 Difference]: Finished difference Result 1650 states and 2130 transitions. [2022-11-16 16:30:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:45,172 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 [2022-11-16 16:30:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:45,181 INFO L225 Difference]: With dead ends: 1650 [2022-11-16 16:30:45,181 INFO L226 Difference]: Without dead ends: 1648 [2022-11-16 16:30:45,182 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 [2022-11-16 16:30:45,183 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1000 mSDsluCounter, 866 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:45,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1732 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 16:30:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-11-16 16:30:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-11-16 16:30:45,525 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) [2022-11-16 16:30:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2127 transitions. [2022-11-16 16:30:45,535 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2127 transitions. Word has length 100 [2022-11-16 16:30:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:45,535 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2127 transitions. [2022-11-16 16:30:45,536 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) [2022-11-16 16:30:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2127 transitions. [2022-11-16 16:30:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 16:30:45,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:45,539 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] [2022-11-16 16:30:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 16:30:45,539 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)] === [2022-11-16 16:30:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash -813067699, now seen corresponding path program 1 times [2022-11-16 16:30:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:45,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026385962] [2022-11-16 16:30:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:30:45,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026385962] [2022-11-16 16:30:45,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026385962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:45,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:30:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723856641] [2022-11-16 16:30:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:30:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:30:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:30:45,796 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) [2022-11-16 16:30:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:46,918 INFO L93 Difference]: Finished difference Result 1648 states and 2127 transitions. [2022-11-16 16:30:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:30:46,919 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 [2022-11-16 16:30:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:46,928 INFO L225 Difference]: With dead ends: 1648 [2022-11-16 16:30:46,928 INFO L226 Difference]: Without dead ends: 1646 [2022-11-16 16:30:46,930 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 [2022-11-16 16:30:46,930 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 997 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:46,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1728 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 16:30:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-16 16:30:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1646. [2022-11-16 16:30:47,232 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) [2022-11-16 16:30:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2124 transitions. [2022-11-16 16:30:47,239 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2124 transitions. Word has length 105 [2022-11-16 16:30:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:47,240 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2124 transitions. [2022-11-16 16:30:47,241 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) [2022-11-16 16:30:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2124 transitions. [2022-11-16 16:30:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 16:30:47,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:47,243 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] [2022-11-16 16:30:47,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 16:30:47,244 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)] === [2022-11-16 16:30:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash 975979, now seen corresponding path program 1 times [2022-11-16 16:30:47,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:47,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677306872] [2022-11-16 16:30:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-16 16:30:47,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:47,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677306872] [2022-11-16 16:30:47,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677306872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:47,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:47,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:30:47,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758773534] [2022-11-16 16:30:47,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:47,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:30:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:30:47,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:30:47,532 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) [2022-11-16 16:30:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:49,267 INFO L93 Difference]: Finished difference Result 1667 states and 2137 transitions. [2022-11-16 16:30:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:30:49,268 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 [2022-11-16 16:30:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:49,277 INFO L225 Difference]: With dead ends: 1667 [2022-11-16 16:30:49,278 INFO L226 Difference]: Without dead ends: 1665 [2022-11-16 16:30:49,279 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 [2022-11-16 16:30:49,280 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 977 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:49,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 3025 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 16:30:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-11-16 16:30:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1646. [2022-11-16 16:30:49,550 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) [2022-11-16 16:30:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2122 transitions. [2022-11-16 16:30:49,557 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2122 transitions. Word has length 127 [2022-11-16 16:30:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:49,558 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2122 transitions. [2022-11-16 16:30:49,558 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) [2022-11-16 16:30:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2122 transitions. [2022-11-16 16:30:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 16:30:49,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:49,562 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] [2022-11-16 16:30:49,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 16:30:49,562 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)] === [2022-11-16 16:30:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2128218365, now seen corresponding path program 1 times [2022-11-16 16:30:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:49,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430979816] [2022-11-16 16:30:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 16:30:50,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430979816] [2022-11-16 16:30:50,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430979816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:50,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:50,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:30:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125043712] [2022-11-16 16:30:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:50,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:30:50,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:30:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:30:50,073 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) [2022-11-16 16:30:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:51,512 INFO L93 Difference]: Finished difference Result 1690 states and 2164 transitions. [2022-11-16 16:30:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:30:51,513 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 [2022-11-16 16:30:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:51,521 INFO L225 Difference]: With dead ends: 1690 [2022-11-16 16:30:51,521 INFO L226 Difference]: Without dead ends: 1688 [2022-11-16 16:30:51,523 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 [2022-11-16 16:30:51,523 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 947 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2644 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 [2022-11-16 16:30:51,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2644 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 16:30:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-11-16 16:30:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1688. [2022-11-16 16:30:51,753 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) [2022-11-16 16:30:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2161 transitions. [2022-11-16 16:30:51,760 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2161 transitions. Word has length 131 [2022-11-16 16:30:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:51,760 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2161 transitions. [2022-11-16 16:30:51,761 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) [2022-11-16 16:30:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2161 transitions. [2022-11-16 16:30:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 16:30:51,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:51,764 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] [2022-11-16 16:30:51,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 16:30:51,765 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)] === [2022-11-16 16:30:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash -574070957, now seen corresponding path program 1 times [2022-11-16 16:30:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:30:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185478504] [2022-11-16 16:30:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:30:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-16 16:30:52,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:30:52,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185478504] [2022-11-16 16:30:52,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185478504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:30:52,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:30:52,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 16:30:52,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666240980] [2022-11-16 16:30:52,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:30:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 16:30:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:30:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 16:30:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:30:52,677 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) [2022-11-16 16:30:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:59,672 INFO L93 Difference]: Finished difference Result 4334 states and 5873 transitions. [2022-11-16 16:30:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 16:30:59,674 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 [2022-11-16 16:30:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:59,690 INFO L225 Difference]: With dead ends: 4334 [2022-11-16 16:30:59,690 INFO L226 Difference]: Without dead ends: 2666 [2022-11-16 16:30:59,698 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 [2022-11-16 16:30:59,698 INFO L413 NwaCegarLoop]: 1474 mSDtfsCounter, 446 mSDsluCounter, 10885 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 12359 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:59,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 12359 Invalid, 2535 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [339 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 16:30:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-11-16 16:31:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1700. [2022-11-16 16:31:00,067 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) [2022-11-16 16:31:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2177 transitions. [2022-11-16 16:31:00,075 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2177 transitions. Word has length 132 [2022-11-16 16:31:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:00,075 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2177 transitions. [2022-11-16 16:31:00,076 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) [2022-11-16 16:31:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2177 transitions. [2022-11-16 16:31:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 16:31:00,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:00,078 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] [2022-11-16 16:31:00,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 16:31:00,079 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)] === [2022-11-16 16:31:00,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:00,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1951411581, now seen corresponding path program 1 times [2022-11-16 16:31:00,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:00,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234120662] [2022-11-16 16:31:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:00,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234120662] [2022-11-16 16:31:00,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234120662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:00,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:00,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:00,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536546166] [2022-11-16 16:31:00,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:00,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:00,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:00,546 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) [2022-11-16 16:31:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:01,872 INFO L93 Difference]: Finished difference Result 1700 states and 2177 transitions. [2022-11-16 16:31:01,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:01,873 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 [2022-11-16 16:31:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:01,885 INFO L225 Difference]: With dead ends: 1700 [2022-11-16 16:31:01,886 INFO L226 Difference]: Without dead ends: 1698 [2022-11-16 16:31:01,887 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 [2022-11-16 16:31:01,888 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 992 mSDsluCounter, 860 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:01,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1720 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 16:31:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-11-16 16:31:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2022-11-16 16:31:02,186 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) [2022-11-16 16:31:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2174 transitions. [2022-11-16 16:31:02,193 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2174 transitions. Word has length 110 [2022-11-16 16:31:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:02,194 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2174 transitions. [2022-11-16 16:31:02,194 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) [2022-11-16 16:31:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2174 transitions. [2022-11-16 16:31:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-16 16:31:02,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:02,198 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] [2022-11-16 16:31:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 16:31:02,198 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)] === [2022-11-16 16:31:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1947417822, now seen corresponding path program 1 times [2022-11-16 16:31:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:02,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367153870] [2022-11-16 16:31:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-16 16:31:02,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367153870] [2022-11-16 16:31:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367153870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:02,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 16:31:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760019786] [2022-11-16 16:31:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 16:31:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 16:31:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:31:02,985 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) [2022-11-16 16:31:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:10,409 INFO L93 Difference]: Finished difference Result 4225 states and 5710 transitions. [2022-11-16 16:31:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 16:31:10,411 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 [2022-11-16 16:31:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:10,424 INFO L225 Difference]: With dead ends: 4225 [2022-11-16 16:31:10,424 INFO L226 Difference]: Without dead ends: 2547 [2022-11-16 16:31:10,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:31:10,433 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 654 mSDsluCounter, 11321 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:10,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 12708 Invalid, 3071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 16:31:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-11-16 16:31:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1717. [2022-11-16 16:31:10,765 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) [2022-11-16 16:31:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2206 transitions. [2022-11-16 16:31:10,774 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2206 transitions. Word has length 136 [2022-11-16 16:31:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:10,775 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2206 transitions. [2022-11-16 16:31:10,775 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) [2022-11-16 16:31:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2206 transitions. [2022-11-16 16:31:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 16:31:10,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:10,779 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] [2022-11-16 16:31:10,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 16:31:10,779 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)] === [2022-11-16 16:31:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:10,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1440836416, now seen corresponding path program 1 times [2022-11-16 16:31:10,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:10,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578372006] [2022-11-16 16:31:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:10,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:10,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578372006] [2022-11-16 16:31:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578372006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:11,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:11,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412024904] [2022-11-16 16:31:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:11,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:11,002 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) [2022-11-16 16:31:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:12,431 INFO L93 Difference]: Finished difference Result 1717 states and 2206 transitions. [2022-11-16 16:31:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:12,432 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 [2022-11-16 16:31:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:12,440 INFO L225 Difference]: With dead ends: 1717 [2022-11-16 16:31:12,440 INFO L226 Difference]: Without dead ends: 1715 [2022-11-16 16:31:12,442 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 [2022-11-16 16:31:12,442 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 989 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:12,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1716 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 16:31:12,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-11-16 16:31:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2022-11-16 16:31:12,839 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) [2022-11-16 16:31:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2203 transitions. [2022-11-16 16:31:12,847 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2203 transitions. Word has length 115 [2022-11-16 16:31:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:12,847 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2203 transitions. [2022-11-16 16:31:12,848 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) [2022-11-16 16:31:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2203 transitions. [2022-11-16 16:31:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 16:31:12,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:12,851 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] [2022-11-16 16:31:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 16:31:12,851 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)] === [2022-11-16 16:31:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2111674658, now seen corresponding path program 1 times [2022-11-16 16:31:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:12,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593641120] [2022-11-16 16:31:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:12,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:13,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593641120] [2022-11-16 16:31:13,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593641120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:13,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:13,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295735438] [2022-11-16 16:31:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:13,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:13,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:13,069 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) [2022-11-16 16:31:14,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:14,589 INFO L93 Difference]: Finished difference Result 1715 states and 2203 transitions. [2022-11-16 16:31:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:14,590 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 [2022-11-16 16:31:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:14,598 INFO L225 Difference]: With dead ends: 1715 [2022-11-16 16:31:14,599 INFO L226 Difference]: Without dead ends: 1713 [2022-11-16 16:31:14,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:31:14,601 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 986 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:14,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1712 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 16:31:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-11-16 16:31:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2022-11-16 16:31:15,087 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) [2022-11-16 16:31:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2200 transitions. [2022-11-16 16:31:15,091 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2200 transitions. Word has length 120 [2022-11-16 16:31:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:15,092 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2200 transitions. [2022-11-16 16:31:15,092 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) [2022-11-16 16:31:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2200 transitions. [2022-11-16 16:31:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 16:31:15,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:15,095 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] [2022-11-16 16:31:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 16:31:15,096 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)] === [2022-11-16 16:31:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1613809332, now seen corresponding path program 1 times [2022-11-16 16:31:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925288027] [2022-11-16 16:31:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:15,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:15,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925288027] [2022-11-16 16:31:15,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925288027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:15,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:15,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915301452] [2022-11-16 16:31:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:15,302 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) [2022-11-16 16:31:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:16,449 INFO L93 Difference]: Finished difference Result 1713 states and 2200 transitions. [2022-11-16 16:31:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:16,450 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 [2022-11-16 16:31:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:16,457 INFO L225 Difference]: With dead ends: 1713 [2022-11-16 16:31:16,457 INFO L226 Difference]: Without dead ends: 1711 [2022-11-16 16:31:16,458 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 [2022-11-16 16:31:16,459 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 983 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1708 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 16:31:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2022-11-16 16:31:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1711. [2022-11-16 16:31:16,783 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) [2022-11-16 16:31:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2197 transitions. [2022-11-16 16:31:16,790 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2197 transitions. Word has length 125 [2022-11-16 16:31:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:16,791 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2197 transitions. [2022-11-16 16:31:16,791 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) [2022-11-16 16:31:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2197 transitions. [2022-11-16 16:31:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 16:31:16,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:16,795 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] [2022-11-16 16:31:16,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 16:31:16,795 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)] === [2022-11-16 16:31:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash 157000332, now seen corresponding path program 1 times [2022-11-16 16:31:16,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:16,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769352263] [2022-11-16 16:31:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:16,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:16,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769352263] [2022-11-16 16:31:16,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769352263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:16,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:16,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075491697] [2022-11-16 16:31:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:16,981 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) [2022-11-16 16:31:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:18,317 INFO L93 Difference]: Finished difference Result 1711 states and 2197 transitions. [2022-11-16 16:31:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:18,318 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 [2022-11-16 16:31:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:18,325 INFO L225 Difference]: With dead ends: 1711 [2022-11-16 16:31:18,325 INFO L226 Difference]: Without dead ends: 1709 [2022-11-16 16:31:18,326 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 [2022-11-16 16:31:18,327 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 980 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:18,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1704 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:31:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-11-16 16:31:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1709. [2022-11-16 16:31:18,788 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) [2022-11-16 16:31:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2194 transitions. [2022-11-16 16:31:18,795 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2194 transitions. Word has length 130 [2022-11-16 16:31:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:18,795 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2194 transitions. [2022-11-16 16:31:18,796 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) [2022-11-16 16:31:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2194 transitions. [2022-11-16 16:31:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-16 16:31:18,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:18,799 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] [2022-11-16 16:31:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 16:31:18,799 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)] === [2022-11-16 16:31:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 532088618, now seen corresponding path program 1 times [2022-11-16 16:31:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:18,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975408666] [2022-11-16 16:31:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 16:31:19,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:19,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975408666] [2022-11-16 16:31:19,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975408666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:19,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884395929] [2022-11-16 16:31:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:19,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:19,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:19,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:31:19,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:31:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:20,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 16:31:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 16:31:20,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:31:20,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884395929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:20,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:31:20,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 14 [2022-11-16 16:31:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760493378] [2022-11-16 16:31:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:20,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 16:31:20,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 16:31:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:31:20,414 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) [2022-11-16 16:31:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:25,218 INFO L93 Difference]: Finished difference Result 2245 states and 2833 transitions. [2022-11-16 16:31:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:31:25,218 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 [2022-11-16 16:31:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:25,226 INFO L225 Difference]: With dead ends: 2245 [2022-11-16 16:31:25,226 INFO L226 Difference]: Without dead ends: 1742 [2022-11-16 16:31:25,229 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 [2022-11-16 16:31:25,229 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 24 mSDsluCounter, 7569 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:25,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8427 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 16:31:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-11-16 16:31:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1718. [2022-11-16 16:31:25,555 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) [2022-11-16 16:31:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2207 transitions. [2022-11-16 16:31:25,562 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2207 transitions. Word has length 157 [2022-11-16 16:31:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:25,562 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2207 transitions. [2022-11-16 16:31:25,563 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) [2022-11-16 16:31:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2207 transitions. [2022-11-16 16:31:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 16:31:25,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:25,566 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] [2022-11-16 16:31:25,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:25,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 16:31:25,776 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)] === [2022-11-16 16:31:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1929643024, now seen corresponding path program 1 times [2022-11-16 16:31:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:25,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622854646] [2022-11-16 16:31:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 16:31:26,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:26,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622854646] [2022-11-16 16:31:26,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622854646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:26,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:26,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:26,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034456565] [2022-11-16 16:31:26,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:26,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:26,036 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) [2022-11-16 16:31:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:27,584 INFO L93 Difference]: Finished difference Result 1718 states and 2207 transitions. [2022-11-16 16:31:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:31:27,585 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 [2022-11-16 16:31:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:27,591 INFO L225 Difference]: With dead ends: 1718 [2022-11-16 16:31:27,592 INFO L226 Difference]: Without dead ends: 1500 [2022-11-16 16:31:27,594 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 [2022-11-16 16:31:27,595 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 977 mSDsluCounter, 851 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 [2022-11-16 16:31:27,595 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] [2022-11-16 16:31:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-16 16:31:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2022-11-16 16:31:27,841 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) [2022-11-16 16:31:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1957 transitions. [2022-11-16 16:31:27,846 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1957 transitions. Word has length 135 [2022-11-16 16:31:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:27,846 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 1957 transitions. [2022-11-16 16:31:27,846 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) [2022-11-16 16:31:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1957 transitions. [2022-11-16 16:31:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 16:31:27,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:27,850 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] [2022-11-16 16:31:27,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 16:31:27,851 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)] === [2022-11-16 16:31:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash 748851737, now seen corresponding path program 1 times [2022-11-16 16:31:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:27,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168785805] [2022-11-16 16:31:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-16 16:31:28,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:28,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168785805] [2022-11-16 16:31:28,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168785805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:28,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048359836] [2022-11-16 16:31:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:28,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:28,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:28,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:31:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:31:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:29,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:31:29,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-16 16:31:29,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:31:29,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048359836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:29,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:31:29,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 14 [2022-11-16 16:31:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620477201] [2022-11-16 16:31:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:31:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:31:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:31:29,710 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) [2022-11-16 16:31:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:33,854 INFO L93 Difference]: Finished difference Result 1825 states and 2363 transitions. [2022-11-16 16:31:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:31:33,854 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 [2022-11-16 16:31:33,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:33,860 INFO L225 Difference]: With dead ends: 1825 [2022-11-16 16:31:33,860 INFO L226 Difference]: Without dead ends: 1500 [2022-11-16 16:31:33,863 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 [2022-11-16 16:31:33,863 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 21 mSDsluCounter, 7262 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:33,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7996 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 16:31:33,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-16 16:31:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2022-11-16 16:31:34,250 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) [2022-11-16 16:31:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1956 transitions. [2022-11-16 16:31:34,256 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1956 transitions. Word has length 162 [2022-11-16 16:31:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:34,256 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 1956 transitions. [2022-11-16 16:31:34,256 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) [2022-11-16 16:31:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1956 transitions. [2022-11-16 16:31:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-16 16:31:34,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:34,259 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] [2022-11-16 16:31:34,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 16:31:34,477 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)] === [2022-11-16 16:31:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1165984503, now seen corresponding path program 1 times [2022-11-16 16:31:34,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:34,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230645775] [2022-11-16 16:31:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-16 16:31:35,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:35,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230645775] [2022-11-16 16:31:35,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230645775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:35,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:35,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 16:31:35,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619473949] [2022-11-16 16:31:35,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:35,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 16:31:35,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:35,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 16:31:35,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:31:35,499 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) [2022-11-16 16:31:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:39,852 INFO L93 Difference]: Finished difference Result 2298 states and 3134 transitions. [2022-11-16 16:31:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 16:31:39,852 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 [2022-11-16 16:31:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:39,860 INFO L225 Difference]: With dead ends: 2298 [2022-11-16 16:31:39,860 INFO L226 Difference]: Without dead ends: 2296 [2022-11-16 16:31:39,862 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 [2022-11-16 16:31:39,863 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 361 mSDsluCounter, 6489 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 7460 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:39,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 7460 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 16:31:39,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-11-16 16:31:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1782. [2022-11-16 16:31:40,327 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) [2022-11-16 16:31:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2325 transitions. [2022-11-16 16:31:40,332 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2325 transitions. Word has length 170 [2022-11-16 16:31:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:40,332 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2325 transitions. [2022-11-16 16:31:40,333 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) [2022-11-16 16:31:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2325 transitions. [2022-11-16 16:31:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-16 16:31:40,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:40,335 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] [2022-11-16 16:31:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 16:31:40,336 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)] === [2022-11-16 16:31:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 205768644, now seen corresponding path program 1 times [2022-11-16 16:31:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:40,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213315962] [2022-11-16 16:31:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 16:31:41,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:41,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213315962] [2022-11-16 16:31:41,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213315962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:41,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835890959] [2022-11-16 16:31:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:41,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:41,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:31:41,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:31:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:41,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 16:31:41,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-16 16:31:42,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:31:42,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835890959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:42,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:31:42,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2022-11-16 16:31:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847138810] [2022-11-16 16:31:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:31:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:31:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:31:42,034 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) [2022-11-16 16:31:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:45,466 INFO L93 Difference]: Finished difference Result 2715 states and 3660 transitions. [2022-11-16 16:31:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:31:45,466 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 [2022-11-16 16:31:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:45,475 INFO L225 Difference]: With dead ends: 2715 [2022-11-16 16:31:45,475 INFO L226 Difference]: Without dead ends: 2243 [2022-11-16 16:31:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:31:45,478 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 210 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 4741 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 16:31:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2022-11-16 16:31:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1784. [2022-11-16 16:31:45,952 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) [2022-11-16 16:31:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2327 transitions. [2022-11-16 16:31:45,959 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2327 transitions. Word has length 183 [2022-11-16 16:31:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:45,960 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2327 transitions. [2022-11-16 16:31:45,960 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) [2022-11-16 16:31:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2327 transitions. [2022-11-16 16:31:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 16:31:45,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:45,963 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] [2022-11-16 16:31:45,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 16:31:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-16 16:31:46,173 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)] === [2022-11-16 16:31:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash -91656930, now seen corresponding path program 1 times [2022-11-16 16:31:46,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:46,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718762952] [2022-11-16 16:31:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:46,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-16 16:31:47,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:47,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718762952] [2022-11-16 16:31:47,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718762952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:47,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875137509] [2022-11-16 16:31:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:47,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:47,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:47,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:31:47,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:31:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 16:31:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-16 16:31:48,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:31:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875137509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:48,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:31:48,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 16 [2022-11-16 16:31:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837771493] [2022-11-16 16:31:48,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:48,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:31:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:31:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-16 16:31:48,205 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) [2022-11-16 16:31:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:52,541 INFO L93 Difference]: Finished difference Result 2722 states and 3513 transitions. [2022-11-16 16:31:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 16:31:52,542 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 [2022-11-16 16:31:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:52,547 INFO L225 Difference]: With dead ends: 2722 [2022-11-16 16:31:52,547 INFO L226 Difference]: Without dead ends: 1788 [2022-11-16 16:31:52,550 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 [2022-11-16 16:31:52,551 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 32 mSDsluCounter, 7275 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8013 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:52,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 8013 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 16:31:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-16 16:31:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1782. [2022-11-16 16:31:53,016 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) [2022-11-16 16:31:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2326 transitions. [2022-11-16 16:31:53,023 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2326 transitions. Word has length 190 [2022-11-16 16:31:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:53,024 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2326 transitions. [2022-11-16 16:31:53,024 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) [2022-11-16 16:31:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2326 transitions. [2022-11-16 16:31:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-16 16:31:53,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:53,027 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] [2022-11-16 16:31:53,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:53,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-16 16:31:53,235 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)] === [2022-11-16 16:31:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -248238889, now seen corresponding path program 1 times [2022-11-16 16:31:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:53,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231891366] [2022-11-16 16:31:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-16 16:31:53,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:53,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231891366] [2022-11-16 16:31:53,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231891366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:53,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:53,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:31:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96257129] [2022-11-16 16:31:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:31:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:31:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:31:53,633 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) [2022-11-16 16:31:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:55,821 INFO L93 Difference]: Finished difference Result 2316 states and 3158 transitions. [2022-11-16 16:31:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:31:55,822 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 [2022-11-16 16:31:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:55,834 INFO L225 Difference]: With dead ends: 2316 [2022-11-16 16:31:55,834 INFO L226 Difference]: Without dead ends: 2314 [2022-11-16 16:31:55,836 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 [2022-11-16 16:31:55,836 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 972 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:55,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 3219 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 16:31:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-11-16 16:31:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1784. [2022-11-16 16:31:56,377 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) [2022-11-16 16:31:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2328 transitions. [2022-11-16 16:31:56,384 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2328 transitions. Word has length 202 [2022-11-16 16:31:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:56,385 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2328 transitions. [2022-11-16 16:31:56,385 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) [2022-11-16 16:31:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2328 transitions. [2022-11-16 16:31:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-16 16:31:56,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:56,388 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] [2022-11-16 16:31:56,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 16:31:56,388 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)] === [2022-11-16 16:31:56,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1159833639, now seen corresponding path program 1 times [2022-11-16 16:31:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:56,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239751174] [2022-11-16 16:31:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-16 16:31:56,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:31:56,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239751174] [2022-11-16 16:31:56,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239751174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:56,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:56,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 16:31:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314949390] [2022-11-16 16:31:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:56,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:31:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:31:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:31:56,725 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) [2022-11-16 16:31:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:59,213 INFO L93 Difference]: Finished difference Result 4012 states and 5370 transitions. [2022-11-16 16:31:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:31:59,214 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 [2022-11-16 16:31:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:59,221 INFO L225 Difference]: With dead ends: 4012 [2022-11-16 16:31:59,221 INFO L226 Difference]: Without dead ends: 2248 [2022-11-16 16:31:59,227 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 [2022-11-16 16:31:59,227 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 106 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:59,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 4341 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 16:31:59,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-11-16 16:31:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1792. [2022-11-16 16:31:59,585 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) [2022-11-16 16:31:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2338 transitions. [2022-11-16 16:31:59,591 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2338 transitions. Word has length 213 [2022-11-16 16:31:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:59,592 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2338 transitions. [2022-11-16 16:31:59,592 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) [2022-11-16 16:31:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2338 transitions. [2022-11-16 16:31:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-16 16:31:59,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:59,595 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] [2022-11-16 16:31:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 16:31:59,596 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)] === [2022-11-16 16:31:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 541630790, now seen corresponding path program 1 times [2022-11-16 16:31:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:59,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048084721] [2022-11-16 16:31:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-16 16:32:00,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048084721] [2022-11-16 16:32:00,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048084721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902441206] [2022-11-16 16:32:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:00,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:00,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:32:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:01,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2180 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 16:32:01,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-11-16 16:32:01,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:01,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902441206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:01,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:32:01,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-16 16:32:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802150801] [2022-11-16 16:32:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:01,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:32:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:32:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:32:01,503 INFO L87 Difference]: Start difference. First operand 1792 states and 2338 transitions. Second operand has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-16 16:32:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:09,156 INFO L93 Difference]: Finished difference Result 4500 states and 6133 transitions. [2022-11-16 16:32:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 16:32:09,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) Word has length 226 [2022-11-16 16:32:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:09,165 INFO L225 Difference]: With dead ends: 4500 [2022-11-16 16:32:09,165 INFO L226 Difference]: Without dead ends: 2726 [2022-11-16 16:32:09,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2022-11-16 16:32:09,171 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 542 mSDsluCounter, 13032 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 14206 SdHoareTripleChecker+Invalid, 3530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:09,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 14206 Invalid, 3530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [451 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 16:32:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-11-16 16:32:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 1792. [2022-11-16 16:32:09,734 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) [2022-11-16 16:32:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2338 transitions. [2022-11-16 16:32:09,741 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2338 transitions. Word has length 226 [2022-11-16 16:32:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:09,742 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2338 transitions. [2022-11-16 16:32:09,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 8.0) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-16 16:32:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2338 transitions. [2022-11-16 16:32:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-16 16:32:09,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:09,746 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] [2022-11-16 16:32:09,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 16:32:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:09,954 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)] === [2022-11-16 16:32:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1051051382, now seen corresponding path program 1 times [2022-11-16 16:32:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:09,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102179451] [2022-11-16 16:32:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-16 16:32:10,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:10,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102179451] [2022-11-16 16:32:10,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102179451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:10,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:10,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:32:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697087820] [2022-11-16 16:32:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:32:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:32:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:32:10,250 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) [2022-11-16 16:32:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:11,794 INFO L93 Difference]: Finished difference Result 3630 states and 4763 transitions. [2022-11-16 16:32:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:32:11,795 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 [2022-11-16 16:32:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:11,801 INFO L225 Difference]: With dead ends: 3630 [2022-11-16 16:32:11,802 INFO L226 Difference]: Without dead ends: 1858 [2022-11-16 16:32:11,806 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 [2022-11-16 16:32:11,806 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 38 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:11,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2240 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 16:32:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-11-16 16:32:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1824. [2022-11-16 16:32:12,198 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) [2022-11-16 16:32:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2390 transitions. [2022-11-16 16:32:12,203 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2390 transitions. Word has length 244 [2022-11-16 16:32:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2390 transitions. [2022-11-16 16:32:12,204 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) [2022-11-16 16:32:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2390 transitions. [2022-11-16 16:32:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-16 16:32:12,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:12,209 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] [2022-11-16 16:32:12,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 16:32:12,210 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)] === [2022-11-16 16:32:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1281125141, now seen corresponding path program 1 times [2022-11-16 16:32:12,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:12,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638843441] [2022-11-16 16:32:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:12,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-16 16:32:12,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:12,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638843441] [2022-11-16 16:32:12,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638843441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:12,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:32:12,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:32:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649613434] [2022-11-16 16:32:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:32:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:32:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:32:12,610 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) [2022-11-16 16:32:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:15,405 INFO L93 Difference]: Finished difference Result 4122 states and 5552 transitions. [2022-11-16 16:32:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:32:15,406 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 [2022-11-16 16:32:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:15,413 INFO L225 Difference]: With dead ends: 4122 [2022-11-16 16:32:15,413 INFO L226 Difference]: Without dead ends: 2318 [2022-11-16 16:32:15,418 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 [2022-11-16 16:32:15,419 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 141 mSDsluCounter, 4388 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, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:15,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 5298 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 16:32:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-11-16 16:32:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1836. [2022-11-16 16:32:15,821 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) [2022-11-16 16:32:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2406 transitions. [2022-11-16 16:32:15,826 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2406 transitions. Word has length 248 [2022-11-16 16:32:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:15,827 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2406 transitions. [2022-11-16 16:32:15,827 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) [2022-11-16 16:32:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2406 transitions. [2022-11-16 16:32:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-16 16:32:15,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:15,830 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] [2022-11-16 16:32:15,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 16:32:15,830 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)] === [2022-11-16 16:32:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash 172405108, now seen corresponding path program 1 times [2022-11-16 16:32:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:15,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475611991] [2022-11-16 16:32:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:15,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-16 16:32:16,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475611991] [2022-11-16 16:32:16,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475611991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503465199] [2022-11-16 16:32:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:16,711 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:32:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 16:32:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-16 16:32:17,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:17,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503465199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:17,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:32:17,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2022-11-16 16:32:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866859445] [2022-11-16 16:32:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 16:32:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 16:32:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-16 16:32:17,864 INFO L87 Difference]: Start difference. First operand 1836 states and 2406 transitions. Second operand has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-16 16:32:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:26,708 INFO L93 Difference]: Finished difference Result 4618 states and 6325 transitions. [2022-11-16 16:32:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 16:32:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 261 [2022-11-16 16:32:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:26,719 INFO L225 Difference]: With dead ends: 4618 [2022-11-16 16:32:26,719 INFO L226 Difference]: Without dead ends: 2800 [2022-11-16 16:32:26,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 16:32:26,726 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 577 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 15513 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 15513 Invalid, 3807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [466 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-16 16:32:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2022-11-16 16:32:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1828. [2022-11-16 16:32:27,169 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) [2022-11-16 16:32:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2396 transitions. [2022-11-16 16:32:27,174 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2396 transitions. Word has length 261 [2022-11-16 16:32:27,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:27,175 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2396 transitions. [2022-11-16 16:32:27,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 7.636363636363637) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-16 16:32:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2396 transitions. [2022-11-16 16:32:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-16 16:32:27,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:27,177 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] [2022-11-16 16:32:27,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:27,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 16:32:27,391 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)] === [2022-11-16 16:32:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1453831777, now seen corresponding path program 1 times [2022-11-16 16:32:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:27,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272947367] [2022-11-16 16:32:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-16 16:32:28,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:28,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272947367] [2022-11-16 16:32:28,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272947367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:28,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187706756] [2022-11-16 16:32:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:28,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:28,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:28,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:32:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:29,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:32:29,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-16 16:32:29,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187706756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:29,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:32:29,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-16 16:32:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565811022] [2022-11-16 16:32:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:29,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:32:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:32:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:32:29,686 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) [2022-11-16 16:32:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:31,595 INFO L93 Difference]: Finished difference Result 5315 states and 6935 transitions. [2022-11-16 16:32:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:32:31,596 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 [2022-11-16 16:32:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:31,604 INFO L225 Difference]: With dead ends: 5315 [2022-11-16 16:32:31,604 INFO L226 Difference]: Without dead ends: 3507 [2022-11-16 16:32:31,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:32:31,609 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 597 mSDsluCounter, 717 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:31,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1640 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:32:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-11-16 16:32:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3433. [2022-11-16 16:32:32,539 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) [2022-11-16 16:32:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 4500 transitions. [2022-11-16 16:32:32,548 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 4500 transitions. Word has length 261 [2022-11-16 16:32:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:32,549 INFO L495 AbstractCegarLoop]: Abstraction has 3433 states and 4500 transitions. [2022-11-16 16:32:32,549 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) [2022-11-16 16:32:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 4500 transitions. [2022-11-16 16:32:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-16 16:32:32,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:32,552 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] [2022-11-16 16:32:32,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:32,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 16:32:32,762 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)] === [2022-11-16 16:32:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1434682222, now seen corresponding path program 1 times [2022-11-16 16:32:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:32,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127792167] [2022-11-16 16:32:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-16 16:32:33,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127792167] [2022-11-16 16:32:33,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127792167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:33,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902044318] [2022-11-16 16:32:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:33,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:33,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 16:32:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:34,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 16:32:34,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-16 16:32:34,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:32:34,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902044318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:32:34,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:32:34,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2022-11-16 16:32:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535805443] [2022-11-16 16:32:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:32:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:32:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:32:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:32:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:32:34,745 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) [2022-11-16 16:32:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:32:38,148 INFO L93 Difference]: Finished difference Result 7572 states and 10169 transitions. [2022-11-16 16:32:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:32:38,148 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 [2022-11-16 16:32:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:32:38,160 INFO L225 Difference]: With dead ends: 7572 [2022-11-16 16:32:38,160 INFO L226 Difference]: Without dead ends: 4159 [2022-11-16 16:32:38,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:32:38,167 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 66 mSDsluCounter, 5204 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:32:38,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 6094 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 16:32:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2022-11-16 16:32:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 3457. [2022-11-16 16:32:38,947 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) [2022-11-16 16:32:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 4560 transitions. [2022-11-16 16:32:38,957 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 4560 transitions. Word has length 266 [2022-11-16 16:32:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:32:38,957 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 4560 transitions. [2022-11-16 16:32:38,957 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) [2022-11-16 16:32:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 4560 transitions. [2022-11-16 16:32:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-16 16:32:38,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:32:38,960 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] [2022-11-16 16:32:38,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:32:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 16:32:39,163 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)] === [2022-11-16 16:32:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:32:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1273672181, now seen corresponding path program 1 times [2022-11-16 16:32:39,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:32:39,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908619283] [2022-11-16 16:32:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:32:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2022-11-16 16:32:40,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:32:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908619283] [2022-11-16 16:32:40,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908619283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044658529] [2022-11-16 16:32:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:40,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:40,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:40,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fa1e30f-83c4-4962-838b-616def144298/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 16:32:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:42,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2212 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 16:32:42,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-16 16:32:42,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:32:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-16 16:32:43,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044658529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:32:43,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [112029467] [2022-11-16 16:32:43,079 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-16 16:32:43,079 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:32:43,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:32:43,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:32:43,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:32:44,461 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:32:44,666 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:32:48,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:49,300 INFO L321 Elim1Store]: treesize reduction 352, result has 45.6 percent of original size [2022-11-16 16:32:49,301 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:32:49,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:50,980 INFO L321 Elim1Store]: treesize reduction 612, result has 33.4 percent of original size [2022-11-16 16:32:50,980 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:07,559 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:07,567 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:08,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:08,995 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:09,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:09,409 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:12,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:12,475 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:12,685 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 16:33:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:19,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:20,113 INFO L321 Elim1Store]: treesize reduction 96, result has 48.1 percent of original size [2022-11-16 16:33:20,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 65 select indices, 65 select index equivalence classes, 399 disjoint index pairs (out of 2080 index pairs), introduced 65 new quantified variables, introduced 8 case distinctions, treesize of input 5321 treesize of output 5170 [2022-11-16 16:33:21,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,512 INFO L217 Elim1Store]: Index analysis took 226 ms [2022-11-16 16:33:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:21,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:21,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:21,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:21,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:21,941 INFO L321 Elim1Store]: treesize reduction 192, result has 40.9 percent of original size [2022-11-16 16:33:21,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 110 select indices, 110 select index equivalence classes, 442 disjoint index pairs (out of 5995 index pairs), introduced 110 new quantified variables, introduced 12 case distinctions, treesize of input 5261 treesize of output 5066 [2022-11-16 16:33:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:22,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:22,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:33:23,146 INFO L321 Elim1Store]: treesize reduction 124, result has 33.0 percent of original size [2022-11-16 16:33:23,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 65 select indices, 65 select index equivalence classes, 399 disjoint index pairs (out of 2080 index pairs), introduced 65 new quantified variables, introduced 8 case distinctions, treesize of input 5161 treesize of output 4982 [2022-11-16 16:36:06,545 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 1195 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:40:31,495 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 1264 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 16:40:54,146 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 1203 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)