./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 4e7fbc69 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_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/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_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 14:58:50,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:58:50,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:58:50,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:58:50,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:58:50,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:58:50,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:58:50,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:58:50,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:58:50,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:58:50,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:58:50,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:58:50,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:58:50,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:58:50,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:58:50,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:58:50,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:58:50,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:58:50,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:58:50,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:58:50,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:58:50,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:58:50,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:58:50,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:58:50,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:58:50,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:58:50,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:58:50,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:58:50,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:58:50,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:58:50,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:58:50,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:58:50,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:58:50,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:58:50,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:58:50,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:58:50,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:58:50,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:58:50,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:58:50,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:58:50,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:58:50,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:58:50,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:58:50,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:58:50,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:58:50,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:58:50,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:58:50,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:58:50,650 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:58:50,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:58:50,650 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:58:50,651 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:58:50,652 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:58:50,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:58:50,652 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:58:50,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:58:50,653 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:58:50,653 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:58:50,653 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:58:50,654 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:58:50,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:58:50,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:58:50,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:58:50,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:58:50,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:58:50,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:58:50,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:58:50,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:58:50,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:58:50,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:58:50,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:58:50,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:50,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:58:50,659 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:58:50,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:58:50,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:58:50,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:58:50,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:58:50,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:58:50,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:58:50,661 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_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2022-11-23 14:58:50,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:58:50,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:58:50,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:58:50,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:58:50,951 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:58:50,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-23 14:58:53,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:58:54,616 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:58:54,619 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-23 14:58:54,677 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/data/9e4575439/326ae0343e324e359e9825fbe41aa554/FLAGf9ba7b885 [2022-11-23 14:58:54,701 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/data/9e4575439/326ae0343e324e359e9825fbe41aa554 [2022-11-23 14:58:54,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:58:54,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:58:54,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:54,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:58:54,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:58:54,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:54" (1/1) ... [2022-11-23 14:58:54,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a28a047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:54, skipping insertion in model container [2022-11-23 14:58:54,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:54" (1/1) ... [2022-11-23 14:58:54,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:58:54,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:58:57,898 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-23 14:58:57,902 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-23 14:58:57,902 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-23 14:58:57,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-23 14:58:57,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-23 14:58:57,904 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-23 14:58:57,904 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-23 14:58:57,905 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-23 14:58:57,905 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-23 14:58:57,905 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-23 14:58:57,906 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-23 14:58:57,906 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-23 14:58:57,907 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-23 14:58:57,907 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-23 14:58:57,908 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-23 14:58:57,908 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-23 14:58:57,909 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-23 14:58:57,909 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-23 14:58:57,910 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-23 14:58:57,910 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-23 14:58:57,911 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-23 14:58:57,911 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-23 14:58:57,911 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-23 14:58:57,912 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-23 14:58:57,912 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-23 14:58:57,913 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-23 14:58:57,913 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-23 14:58:57,914 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-23 14:58:57,914 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-23 14:58:57,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-23 14:58:57,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-23 14:58:57,916 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-23 14:58:57,916 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-23 14:58:57,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-23 14:58:57,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-23 14:58:57,917 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-23 14:58:57,918 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-23 14:58:57,918 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-23 14:58:57,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-23 14:58:57,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-23 14:58:57,920 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-23 14:58:57,920 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-23 14:58:57,921 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-23 14:58:57,921 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-23 14:58:57,921 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-23 14:58:57,922 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-23 14:58:57,922 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-23 14:58:57,923 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-23 14:58:57,923 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-23 14:58:57,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-23 14:58:57,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-23 14:58:57,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-23 14:58:57,925 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-23 14:58:57,939 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-23 14:58:57,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-23 14:58:57,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-23 14:58:57,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-23 14:58:57,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-23 14:58:57,942 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-23 14:58:57,942 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-23 14:58:57,943 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-23 14:58:57,943 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-23 14:58:57,944 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-23 14:58:57,944 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-23 14:58:57,945 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-23 14:58:57,945 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-23 14:58:57,945 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-23 14:58:57,946 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-23 14:58:57,946 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-23 14:58:57,947 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-23 14:58:57,948 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-23 14:58:57,948 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-23 14:58:57,949 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-23 14:58:57,949 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-23 14:58:57,950 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-23 14:58:57,950 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-23 14:58:57,951 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-23 14:58:57,951 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-23 14:58:57,951 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-23 14:58:57,952 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-23 14:58:57,952 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-23 14:58:57,953 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-23 14:58:57,953 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-23 14:58:57,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-23 14:58:57,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-23 14:58:57,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-23 14:58:57,955 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-23 14:58:57,955 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-23 14:58:57,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:57,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:58:58,334 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300556,300569] [2022-11-23 14:58:58,335 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300701,300714] [2022-11-23 14:58:58,336 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[300847,300860] [2022-11-23 14:58:58,336 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301012,301025] [2022-11-23 14:58:58,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301170,301183] [2022-11-23 14:58:58,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301328,301341] [2022-11-23 14:58:58,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301486,301499] [2022-11-23 14:58:58,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301646,301659] [2022-11-23 14:58:58,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301805,301818] [2022-11-23 14:58:58,339 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[301944,301957] [2022-11-23 14:58:58,339 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302086,302099] [2022-11-23 14:58:58,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302235,302248] [2022-11-23 14:58:58,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302374,302387] [2022-11-23 14:58:58,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302529,302542] [2022-11-23 14:58:58,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302689,302702] [2022-11-23 14:58:58,341 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302840,302853] [2022-11-23 14:58:58,342 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[302991,303004] [2022-11-23 14:58:58,342 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303143,303156] [2022-11-23 14:58:58,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303292,303305] [2022-11-23 14:58:58,343 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303440,303453] [2022-11-23 14:58:58,344 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303597,303610] [2022-11-23 14:58:58,344 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303746,303759] [2022-11-23 14:58:58,345 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[303902,303915] [2022-11-23 14:58:58,345 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304055,304068] [2022-11-23 14:58:58,346 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304201,304214] [2022-11-23 14:58:58,346 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304344,304357] [2022-11-23 14:58:58,347 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304496,304509] [2022-11-23 14:58:58,348 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304642,304655] [2022-11-23 14:58:58,349 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304787,304800] [2022-11-23 14:58:58,349 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[304941,304954] [2022-11-23 14:58:58,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305092,305105] [2022-11-23 14:58:58,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305247,305260] [2022-11-23 14:58:58,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305399,305412] [2022-11-23 14:58:58,351 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305554,305567] [2022-11-23 14:58:58,352 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305718,305731] [2022-11-23 14:58:58,352 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[305874,305887] [2022-11-23 14:58:58,353 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306038,306051] [2022-11-23 14:58:58,354 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306180,306193] [2022-11-23 14:58:58,354 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306338,306351] [2022-11-23 14:58:58,355 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306505,306518] [2022-11-23 14:58:58,357 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306664,306677] [2022-11-23 14:58:58,357 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306823,306836] [2022-11-23 14:58:58,358 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[306972,306985] [2022-11-23 14:58:58,359 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307119,307132] [2022-11-23 14:58:58,359 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307258,307271] [2022-11-23 14:58:58,360 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307421,307434] [2022-11-23 14:58:58,360 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307587,307600] [2022-11-23 14:58:58,361 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307751,307764] [2022-11-23 14:58:58,362 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[307916,307929] [2022-11-23 14:58:58,362 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308081,308094] [2022-11-23 14:58:58,363 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308247,308260] [2022-11-23 14:58:58,363 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308412,308425] [2022-11-23 14:58:58,364 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308579,308592] [2022-11-23 14:58:58,365 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308739,308752] [2022-11-23 14:58:58,366 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[308901,308914] [2022-11-23 14:58:58,367 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309060,309073] [2022-11-23 14:58:58,371 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309206,309219] [2022-11-23 14:58:58,373 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309349,309362] [2022-11-23 14:58:58,373 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309493,309506] [2022-11-23 14:58:58,374 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309636,309649] [2022-11-23 14:58:58,374 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309780,309793] [2022-11-23 14:58:58,375 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[309921,309934] [2022-11-23 14:58:58,376 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310059,310072] [2022-11-23 14:58:58,377 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310217,310230] [2022-11-23 14:58:58,377 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310376,310389] [2022-11-23 14:58:58,378 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310532,310545] [2022-11-23 14:58:58,378 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310681,310694] [2022-11-23 14:58:58,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310833,310846] [2022-11-23 14:58:58,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[310984,310997] [2022-11-23 14:58:58,380 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311133,311146] [2022-11-23 14:58:58,380 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311285,311298] [2022-11-23 14:58:58,381 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311433,311446] [2022-11-23 14:58:58,381 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311586,311599] [2022-11-23 14:58:58,382 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311737,311750] [2022-11-23 14:58:58,382 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[311887,311900] [2022-11-23 14:58:58,383 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312034,312047] [2022-11-23 14:58:58,383 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312185,312198] [2022-11-23 14:58:58,384 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312336,312349] [2022-11-23 14:58:58,384 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312484,312497] [2022-11-23 14:58:58,384 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312650,312663] [2022-11-23 14:58:58,385 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312819,312832] [2022-11-23 14:58:58,385 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[312986,312999] [2022-11-23 14:58:58,386 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313154,313167] [2022-11-23 14:58:58,386 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313304,313317] [2022-11-23 14:58:58,387 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313451,313464] [2022-11-23 14:58:58,387 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313612,313625] [2022-11-23 14:58:58,388 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313782,313795] [2022-11-23 14:58:58,388 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i[313944,313957] [2022-11-23 14:58:58,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:58,572 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:58:58,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58 WrapperNode [2022-11-23 14:58:58,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:58,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:58,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:58:58,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:58:58,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,780 INFO L138 Inliner]: procedures = 554, calls = 1454, calls flagged for inlining = 247, calls inlined = 157, statements flattened = 3201 [2022-11-23 14:58:58,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:58,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:58:58,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:58:58,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:58:58,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:58,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:58:58,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:58:58,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:58:58,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:58:59,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (1/1) ... [2022-11-23 14:58:59,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:59,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:58:59,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:58:59,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:58:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2022-11-23 14:58:59,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2022-11-23 14:58:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2022-11-23 14:58:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2022-11-23 14:58:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:58:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:58:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-23 14:58:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2022-11-23 14:58:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2022-11-23 14:58:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2022-11-23 14:58:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:58:59,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 14:58:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2022-11-23 14:58:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2022-11-23 14:58:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2022-11-23 14:58:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2022-11-23 14:58:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2022-11-23 14:58:59,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2022-11-23 14:58:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2022-11-23 14:58:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2022-11-23 14:58:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:58:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:58:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:58:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:58:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2022-11-23 14:58:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2022-11-23 14:58:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:58:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2022-11-23 14:58:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2022-11-23 14:58:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:58:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:58:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2022-11-23 14:58:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2022-11-23 14:58:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2022-11-23 14:58:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2022-11-23 14:58:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:58:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-23 14:58:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-23 14:58:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2022-11-23 14:58:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2022-11-23 14:58:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:58:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-23 14:58:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2022-11-23 14:58:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2022-11-23 14:58:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2022-11-23 14:58:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-23 14:58:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-23 14:58:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:58:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:58:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2022-11-23 14:58:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2022-11-23 14:58:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-23 14:58:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2022-11-23 14:58:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2022-11-23 14:58:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2022-11-23 14:58:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:58:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2022-11-23 14:58:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2022-11-23 14:58:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-23 14:58:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-23 14:58:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2022-11-23 14:58:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2022-11-23 14:58:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:58:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:58:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-23 14:58:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-23 14:58:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2022-11-23 14:58:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2022-11-23 14:58:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-23 14:58:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2022-11-23 14:58:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2022-11-23 14:58:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2022-11-23 14:58:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:58:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2022-11-23 14:58:59,109 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2022-11-23 14:58:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:58:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:58:59,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:58:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:58:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-23 14:58:59,110 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-23 14:58:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:58:59,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:58:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2022-11-23 14:58:59,110 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2022-11-23 14:58:59,111 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2022-11-23 14:58:59,112 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2022-11-23 14:58:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-23 14:58:59,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2022-11-23 14:58:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2022-11-23 14:58:59,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2022-11-23 14:58:59,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:58:59,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:58:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:58:59,113 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:58:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:58:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:58:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:58:59,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:58:59,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:58:59,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 14:58:59,114 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2022-11-23 14:58:59,114 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2022-11-23 14:58:59,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-23 14:58:59,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-23 14:58:59,114 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-23 14:58:59,114 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-23 14:58:59,114 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-23 14:58:59,115 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-23 14:58:59,116 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-23 14:58:59,116 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-23 14:58:59,116 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-23 14:58:59,116 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-23 14:58:59,117 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2022-11-23 14:58:59,117 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2022-11-23 14:58:59,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2022-11-23 14:58:59,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2022-11-23 14:58:59,117 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2022-11-23 14:58:59,117 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2022-11-23 14:58:59,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2022-11-23 14:58:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2022-11-23 14:58:59,118 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2022-11-23 14:58:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2022-11-23 14:58:59,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:58:59,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-23 14:58:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2022-11-23 14:58:59,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2022-11-23 14:58:59,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2022-11-23 14:58:59,119 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-23 14:58:59,119 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-23 14:58:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:58:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:58:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2022-11-23 14:58:59,120 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2022-11-23 14:58:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-23 14:58:59,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2022-11-23 14:58:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:58:59,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:58:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-23 14:58:59,121 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-23 14:58:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2022-11-23 14:58:59,121 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2022-11-23 14:58:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-23 14:58:59,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2022-11-23 14:58:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2022-11-23 14:58:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2022-11-23 14:58:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-23 14:58:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2022-11-23 14:58:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-23 14:58:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2022-11-23 14:58:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:58:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:58:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:58:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-23 14:58:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2022-11-23 14:58:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:58:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:58:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-23 14:58:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2022-11-23 14:58:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-23 14:58:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2022-11-23 14:58:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:58:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:58:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2022-11-23 14:58:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2022-11-23 14:58:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:58:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:58:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-23 14:58:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2022-11-23 14:58:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-23 14:58:59,125 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-23 14:58:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2022-11-23 14:58:59,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2022-11-23 14:58:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:58:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2022-11-23 14:58:59,125 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2022-11-23 14:58:59,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:58:59,815 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:59:00,314 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:59:02,064 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:59:02,587 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:59:02,587 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-23 14:59:02,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:02 BoogieIcfgContainer [2022-11-23 14:59:02,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:59:02,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:59:02,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:59:02,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:59:02,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:58:54" (1/3) ... [2022-11-23 14:59:02,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1400e711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:02, skipping insertion in model container [2022-11-23 14:59:02,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:58" (2/3) ... [2022-11-23 14:59:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1400e711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:02, skipping insertion in model container [2022-11-23 14:59:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:02" (3/3) ... [2022-11-23 14:59:02,605 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2022-11-23 14:59:02,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:59:02,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-23 14:59:02,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:59:02,703 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;@3a13fc5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:59:02,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-23 14:59:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 943 states, 561 states have (on average 1.3493761140819964) internal successors, (757), 602 states have internal predecessors, (757), 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) [2022-11-23 14:59:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 14:59:02,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:02,722 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] [2022-11-23 14:59:02,722 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)] === [2022-11-23 14:59:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1286415141, now seen corresponding path program 1 times [2022-11-23 14:59:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439760004] [2022-11-23 14:59:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:03,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:03,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439760004] [2022-11-23 14:59:03,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439760004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:03,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:03,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419766217] [2022-11-23 14:59:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:03,432 INFO L87 Difference]: Start difference. First operand has 943 states, 561 states have (on average 1.3493761140819964) internal successors, (757), 602 states have internal predecessors, (757), 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) [2022-11-23 14:59:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:04,555 INFO L93 Difference]: Finished difference Result 1749 states and 2489 transitions. [2022-11-23 14:59:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:04,557 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 [2022-11-23 14:59:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:04,574 INFO L225 Difference]: With dead ends: 1749 [2022-11-23 14:59:04,574 INFO L226 Difference]: Without dead ends: 821 [2022-11-23 14:59:04,591 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 [2022-11-23 14:59:04,597 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 1058 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:04,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1820 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:59:04,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-23 14:59:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-23 14:59:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 476 states have (on average 1.2415966386554622) internal successors, (591), 525 states have internal predecessors, (591), 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) [2022-11-23 14:59:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1061 transitions. [2022-11-23 14:59:04,719 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1061 transitions. Word has length 38 [2022-11-23 14:59:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:04,721 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1061 transitions. [2022-11-23 14:59:04,721 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) [2022-11-23 14:59:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1061 transitions. [2022-11-23 14:59:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 14:59:04,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:04,724 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] [2022-11-23 14:59:04,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:59:04,724 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)] === [2022-11-23 14:59:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -767846097, now seen corresponding path program 1 times [2022-11-23 14:59:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869222528] [2022-11-23 14:59:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:04,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:04,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869222528] [2022-11-23 14:59:04,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869222528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:04,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:04,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:04,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585104242] [2022-11-23 14:59:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:04,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:04,996 INFO L87 Difference]: Start difference. First operand 821 states and 1061 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) [2022-11-23 14:59:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:06,403 INFO L93 Difference]: Finished difference Result 1487 states and 1916 transitions. [2022-11-23 14:59:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:06,404 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 [2022-11-23 14:59:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:06,417 INFO L225 Difference]: With dead ends: 1487 [2022-11-23 14:59:06,417 INFO L226 Difference]: Without dead ends: 1485 [2022-11-23 14:59:06,418 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 [2022-11-23 14:59:06,419 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 862 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:06,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 3211 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:59:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-23 14:59:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1311. [2022-11-23 14:59:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 760 states have (on average 1.236842105263158) internal successors, (940), 825 states have internal predecessors, (940), 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) [2022-11-23 14:59:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1729 transitions. [2022-11-23 14:59:06,591 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1729 transitions. Word has length 43 [2022-11-23 14:59:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:06,592 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1729 transitions. [2022-11-23 14:59:06,593 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) [2022-11-23 14:59:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1729 transitions. [2022-11-23 14:59:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 14:59:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:06,611 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] [2022-11-23 14:59:06,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:59:06,611 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)] === [2022-11-23 14:59:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 840896797, now seen corresponding path program 1 times [2022-11-23 14:59:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548969289] [2022-11-23 14:59:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:06,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:06,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548969289] [2022-11-23 14:59:06,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548969289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:06,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:06,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895889235] [2022-11-23 14:59:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:06,924 INFO L87 Difference]: Start difference. First operand 1311 states and 1729 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) [2022-11-23 14:59:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:07,941 INFO L93 Difference]: Finished difference Result 1311 states and 1729 transitions. [2022-11-23 14:59:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:07,942 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 [2022-11-23 14:59:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:07,949 INFO L225 Difference]: With dead ends: 1311 [2022-11-23 14:59:07,949 INFO L226 Difference]: Without dead ends: 1309 [2022-11-23 14:59:07,950 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 [2022-11-23 14:59:07,951 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 1040 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:07,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1790 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:59:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-23 14:59:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2022-11-23 14:59:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 759 states have (on average 1.2358366271409749) internal successors, (938), 823 states have internal predecessors, (938), 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) [2022-11-23 14:59:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1727 transitions. [2022-11-23 14:59:08,085 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1727 transitions. Word has length 48 [2022-11-23 14:59:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:08,086 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1727 transitions. [2022-11-23 14:59:08,086 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) [2022-11-23 14:59:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1727 transitions. [2022-11-23 14:59:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 14:59:08,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:08,088 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] [2022-11-23 14:59:08,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:59:08,089 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)] === [2022-11-23 14:59:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1972611560, now seen corresponding path program 1 times [2022-11-23 14:59:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:08,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345446637] [2022-11-23 14:59:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:08,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:08,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345446637] [2022-11-23 14:59:08,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345446637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:08,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:08,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558465832] [2022-11-23 14:59:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:08,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:08,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:08,374 INFO L87 Difference]: Start difference. First operand 1309 states and 1727 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) [2022-11-23 14:59:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:09,542 INFO L93 Difference]: Finished difference Result 1725 states and 2203 transitions. [2022-11-23 14:59:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:09,547 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 [2022-11-23 14:59:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:09,559 INFO L225 Difference]: With dead ends: 1725 [2022-11-23 14:59:09,559 INFO L226 Difference]: Without dead ends: 1723 [2022-11-23 14:59:09,560 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 [2022-11-23 14:59:09,565 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 1026 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:09,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2186 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:59:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-11-23 14:59:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1680. [2022-11-23 14:59:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 972 states have (on average 1.228395061728395) internal successors, (1194), 1042 states have internal predecessors, (1194), 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) [2022-11-23 14:59:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2177 transitions. [2022-11-23 14:59:09,720 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2177 transitions. Word has length 53 [2022-11-23 14:59:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:09,721 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2177 transitions. [2022-11-23 14:59:09,721 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) [2022-11-23 14:59:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2177 transitions. [2022-11-23 14:59:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 14:59:09,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:09,723 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] [2022-11-23 14:59:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:59:09,724 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)] === [2022-11-23 14:59:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash -327768910, now seen corresponding path program 1 times [2022-11-23 14:59:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:09,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402192403] [2022-11-23 14:59:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:09,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402192403] [2022-11-23 14:59:09,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402192403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:09,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:09,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811868507] [2022-11-23 14:59:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:09,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:09,950 INFO L87 Difference]: Start difference. First operand 1680 states and 2177 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) [2022-11-23 14:59:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:11,158 INFO L93 Difference]: Finished difference Result 1680 states and 2177 transitions. [2022-11-23 14:59:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:11,159 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 [2022-11-23 14:59:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:11,168 INFO L225 Difference]: With dead ends: 1680 [2022-11-23 14:59:11,169 INFO L226 Difference]: Without dead ends: 1678 [2022-11-23 14:59:11,172 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 [2022-11-23 14:59:11,173 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1037 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:11,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1788 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:59:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-11-23 14:59:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1678. [2022-11-23 14:59:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 971 states have (on average 1.2265705458290421) internal successors, (1191), 1040 states have internal predecessors, (1191), 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) [2022-11-23 14:59:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2174 transitions. [2022-11-23 14:59:11,336 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2174 transitions. Word has length 58 [2022-11-23 14:59:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:11,337 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2174 transitions. [2022-11-23 14:59:11,337 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) [2022-11-23 14:59:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2174 transitions. [2022-11-23 14:59:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 14:59:11,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:11,338 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] [2022-11-23 14:59:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:59:11,338 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)] === [2022-11-23 14:59:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -223452677, now seen corresponding path program 1 times [2022-11-23 14:59:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486261650] [2022-11-23 14:59:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:11,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:11,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486261650] [2022-11-23 14:59:11,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486261650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:11,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:11,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697291877] [2022-11-23 14:59:11,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:11,584 INFO L87 Difference]: Start difference. First operand 1678 states and 2174 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) [2022-11-23 14:59:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:12,536 INFO L93 Difference]: Finished difference Result 1678 states and 2174 transitions. [2022-11-23 14:59:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:12,536 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 [2022-11-23 14:59:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:12,545 INFO L225 Difference]: With dead ends: 1678 [2022-11-23 14:59:12,545 INFO L226 Difference]: Without dead ends: 1676 [2022-11-23 14:59:12,546 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 [2022-11-23 14:59:12,547 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1034 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:12,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1784 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:59:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-11-23 14:59:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2022-11-23 14:59:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 970 states have (on average 1.2247422680412372) internal successors, (1188), 1038 states have internal predecessors, (1188), 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) [2022-11-23 14:59:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2171 transitions. [2022-11-23 14:59:12,673 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2171 transitions. Word has length 63 [2022-11-23 14:59:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:12,673 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2171 transitions. [2022-11-23 14:59:12,673 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) [2022-11-23 14:59:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2171 transitions. [2022-11-23 14:59:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 14:59:12,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:12,691 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] [2022-11-23 14:59:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:59:12,691 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)] === [2022-11-23 14:59:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1075536400, now seen corresponding path program 1 times [2022-11-23 14:59:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:12,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231254681] [2022-11-23 14:59:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:12,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:12,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:12,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231254681] [2022-11-23 14:59:12,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231254681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:12,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:12,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:12,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373008537] [2022-11-23 14:59:12,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:12,883 INFO L87 Difference]: Start difference. First operand 1676 states and 2171 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) [2022-11-23 14:59:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:13,969 INFO L93 Difference]: Finished difference Result 1676 states and 2171 transitions. [2022-11-23 14:59:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:13,970 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 [2022-11-23 14:59:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:13,978 INFO L225 Difference]: With dead ends: 1676 [2022-11-23 14:59:13,979 INFO L226 Difference]: Without dead ends: 1674 [2022-11-23 14:59:13,980 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 [2022-11-23 14:59:13,981 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 1031 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:13,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1780 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:59:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-11-23 14:59:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2022-11-23 14:59:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 969 states have (on average 1.2229102167182662) internal successors, (1185), 1036 states have internal predecessors, (1185), 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) [2022-11-23 14:59:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2168 transitions. [2022-11-23 14:59:14,142 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2168 transitions. Word has length 68 [2022-11-23 14:59:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:14,143 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2168 transitions. [2022-11-23 14:59:14,143 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) [2022-11-23 14:59:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2168 transitions. [2022-11-23 14:59:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 14:59:14,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:14,145 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] [2022-11-23 14:59:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:59:14,146 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)] === [2022-11-23 14:59:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1690475699, now seen corresponding path program 1 times [2022-11-23 14:59:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:14,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047192294] [2022-11-23 14:59:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:14,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:14,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047192294] [2022-11-23 14:59:14,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047192294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:14,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:14,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:14,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576599146] [2022-11-23 14:59:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:14,386 INFO L87 Difference]: Start difference. First operand 1674 states and 2168 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) [2022-11-23 14:59:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:15,546 INFO L93 Difference]: Finished difference Result 1674 states and 2168 transitions. [2022-11-23 14:59:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:15,547 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 [2022-11-23 14:59:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:15,555 INFO L225 Difference]: With dead ends: 1674 [2022-11-23 14:59:15,556 INFO L226 Difference]: Without dead ends: 1672 [2022-11-23 14:59:15,557 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 [2022-11-23 14:59:15,558 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 1032 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1772 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 [2022-11-23 14:59:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1772 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:59:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-23 14:59:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-23 14:59:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 968 states have (on average 1.2210743801652892) internal successors, (1182), 1034 states have internal predecessors, (1182), 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) [2022-11-23 14:59:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2165 transitions. [2022-11-23 14:59:15,701 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2165 transitions. Word has length 73 [2022-11-23 14:59:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:15,703 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 2165 transitions. [2022-11-23 14:59:15,703 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) [2022-11-23 14:59:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2165 transitions. [2022-11-23 14:59:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 14:59:15,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:15,705 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] [2022-11-23 14:59:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:59:15,706 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)] === [2022-11-23 14:59:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1049363760, now seen corresponding path program 1 times [2022-11-23 14:59:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:15,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215375146] [2022-11-23 14:59:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:15,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215375146] [2022-11-23 14:59:15,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215375146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:15,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:15,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:15,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176758066] [2022-11-23 14:59:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:15,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:15,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:15,944 INFO L87 Difference]: Start difference. First operand 1672 states and 2165 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) [2022-11-23 14:59:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:17,036 INFO L93 Difference]: Finished difference Result 1672 states and 2165 transitions. [2022-11-23 14:59:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:17,036 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 [2022-11-23 14:59:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:17,045 INFO L225 Difference]: With dead ends: 1672 [2022-11-23 14:59:17,045 INFO L226 Difference]: Without dead ends: 1670 [2022-11-23 14:59:17,046 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 [2022-11-23 14:59:17,047 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1024 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:17,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1772 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:59:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-11-23 14:59:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2022-11-23 14:59:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 967 states have (on average 1.21923474663909) internal successors, (1179), 1032 states have internal predecessors, (1179), 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) [2022-11-23 14:59:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2162 transitions. [2022-11-23 14:59:17,191 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2162 transitions. Word has length 75 [2022-11-23 14:59:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:17,192 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2162 transitions. [2022-11-23 14:59:17,192 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) [2022-11-23 14:59:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2162 transitions. [2022-11-23 14:59:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:59:17,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:17,194 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] [2022-11-23 14:59:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:59:17,194 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)] === [2022-11-23 14:59:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1817092006, now seen corresponding path program 1 times [2022-11-23 14:59:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381816173] [2022-11-23 14:59:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:17,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:17,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381816173] [2022-11-23 14:59:17,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381816173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:17,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:17,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66420816] [2022-11-23 14:59:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:17,395 INFO L87 Difference]: Start difference. First operand 1670 states and 2162 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) [2022-11-23 14:59:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:18,670 INFO L93 Difference]: Finished difference Result 1670 states and 2162 transitions. [2022-11-23 14:59:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:18,671 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 [2022-11-23 14:59:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:18,680 INFO L225 Difference]: With dead ends: 1670 [2022-11-23 14:59:18,680 INFO L226 Difference]: Without dead ends: 1668 [2022-11-23 14:59:18,681 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 [2022-11-23 14:59:18,682 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 1023 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:18,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1768 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:59:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-23 14:59:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-11-23 14:59:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 966 states have (on average 1.2173913043478262) internal successors, (1176), 1030 states have internal predecessors, (1176), 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) [2022-11-23 14:59:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2159 transitions. [2022-11-23 14:59:18,839 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2159 transitions. Word has length 80 [2022-11-23 14:59:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:18,840 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2159 transitions. [2022-11-23 14:59:18,840 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) [2022-11-23 14:59:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2159 transitions. [2022-11-23 14:59:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 14:59:18,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:18,842 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] [2022-11-23 14:59:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:59:18,842 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)] === [2022-11-23 14:59:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -985708471, now seen corresponding path program 1 times [2022-11-23 14:59:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:18,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122896130] [2022-11-23 14:59:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:19,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122896130] [2022-11-23 14:59:19,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122896130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:19,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:19,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578859496] [2022-11-23 14:59:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:19,059 INFO L87 Difference]: Start difference. First operand 1668 states and 2159 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) [2022-11-23 14:59:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:19,948 INFO L93 Difference]: Finished difference Result 1668 states and 2159 transitions. [2022-11-23 14:59:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:19,949 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 [2022-11-23 14:59:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:19,959 INFO L225 Difference]: With dead ends: 1668 [2022-11-23 14:59:19,959 INFO L226 Difference]: Without dead ends: 1666 [2022-11-23 14:59:19,961 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 [2022-11-23 14:59:19,961 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1020 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:19,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1764 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:59:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-23 14:59:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-11-23 14:59:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 965 states have (on average 1.2155440414507772) internal successors, (1173), 1028 states have internal predecessors, (1173), 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) [2022-11-23 14:59:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2156 transitions. [2022-11-23 14:59:20,200 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2156 transitions. Word has length 85 [2022-11-23 14:59:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:20,200 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2156 transitions. [2022-11-23 14:59:20,201 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) [2022-11-23 14:59:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2156 transitions. [2022-11-23 14:59:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 14:59:20,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:20,203 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] [2022-11-23 14:59:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:59:20,204 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)] === [2022-11-23 14:59:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -133599614, now seen corresponding path program 1 times [2022-11-23 14:59:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:20,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009312271] [2022-11-23 14:59:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:20,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:20,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009312271] [2022-11-23 14:59:20,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009312271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:20,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:20,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39314274] [2022-11-23 14:59:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:20,443 INFO L87 Difference]: Start difference. First operand 1666 states and 2156 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) [2022-11-23 14:59:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:21,804 INFO L93 Difference]: Finished difference Result 1666 states and 2156 transitions. [2022-11-23 14:59:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:21,805 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 [2022-11-23 14:59:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:21,813 INFO L225 Difference]: With dead ends: 1666 [2022-11-23 14:59:21,813 INFO L226 Difference]: Without dead ends: 1664 [2022-11-23 14:59:21,815 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 [2022-11-23 14:59:21,815 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1017 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:21,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1760 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:59:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-23 14:59:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2022-11-23 14:59:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 964 states have (on average 1.2136929460580912) internal successors, (1170), 1026 states have internal predecessors, (1170), 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) [2022-11-23 14:59:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2153 transitions. [2022-11-23 14:59:22,031 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2153 transitions. Word has length 90 [2022-11-23 14:59:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:22,033 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2153 transitions. [2022-11-23 14:59:22,034 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) [2022-11-23 14:59:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2153 transitions. [2022-11-23 14:59:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 14:59:22,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:22,036 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] [2022-11-23 14:59:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:59:22,036 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)] === [2022-11-23 14:59:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1350265433, now seen corresponding path program 1 times [2022-11-23 14:59:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:22,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010015884] [2022-11-23 14:59:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-23 14:59:22,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010015884] [2022-11-23 14:59:22,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010015884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:22,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:59:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142763834] [2022-11-23 14:59:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:59:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:59:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:59:22,949 INFO L87 Difference]: Start difference. First operand 1664 states and 2153 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) [2022-11-23 14:59:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:26,981 INFO L93 Difference]: Finished difference Result 2077 states and 2836 transitions. [2022-11-23 14:59:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:59:26,982 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 [2022-11-23 14:59:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:26,994 INFO L225 Difference]: With dead ends: 2077 [2022-11-23 14:59:26,994 INFO L226 Difference]: Without dead ends: 2075 [2022-11-23 14:59:26,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:59:26,997 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 1038 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3798 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:26,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 3798 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:59:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-11-23 14:59:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1662. [2022-11-23 14:59:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 963 states have (on average 1.2118380062305296) internal successors, (1167), 1024 states have internal predecessors, (1167), 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) [2022-11-23 14:59:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2150 transitions. [2022-11-23 14:59:27,277 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2150 transitions. Word has length 114 [2022-11-23 14:59:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:27,278 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2150 transitions. [2022-11-23 14:59:27,278 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) [2022-11-23 14:59:27,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2150 transitions. [2022-11-23 14:59:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:59:27,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:27,283 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] [2022-11-23 14:59:27,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:59:27,284 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)] === [2022-11-23 14:59:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:27,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1157235881, now seen corresponding path program 1 times [2022-11-23 14:59:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:27,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635000131] [2022-11-23 14:59:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:27,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635000131] [2022-11-23 14:59:27,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635000131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:27,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:27,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375141789] [2022-11-23 14:59:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:27,487 INFO L87 Difference]: Start difference. First operand 1662 states and 2150 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) [2022-11-23 14:59:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:28,370 INFO L93 Difference]: Finished difference Result 1662 states and 2150 transitions. [2022-11-23 14:59:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:28,371 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 [2022-11-23 14:59:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:28,380 INFO L225 Difference]: With dead ends: 1662 [2022-11-23 14:59:28,380 INFO L226 Difference]: Without dead ends: 1660 [2022-11-23 14:59:28,382 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 [2022-11-23 14:59:28,382 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1012 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:28,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1752 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:59:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2022-11-23 14:59:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1660. [2022-11-23 14:59:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 962 states have (on average 1.20997920997921) internal successors, (1164), 1022 states have internal predecessors, (1164), 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) [2022-11-23 14:59:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2147 transitions. [2022-11-23 14:59:28,707 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2147 transitions. Word has length 95 [2022-11-23 14:59:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:28,707 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2147 transitions. [2022-11-23 14:59:28,708 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) [2022-11-23 14:59:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2147 transitions. [2022-11-23 14:59:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 14:59:28,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:28,711 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] [2022-11-23 14:59:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:59:28,711 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)] === [2022-11-23 14:59:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 980716992, now seen corresponding path program 1 times [2022-11-23 14:59:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:28,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840640241] [2022-11-23 14:59:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-23 14:59:28,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840640241] [2022-11-23 14:59:28,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840640241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:28,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640893454] [2022-11-23 14:59:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:28,962 INFO L87 Difference]: Start difference. First operand 1660 states and 2147 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) [2022-11-23 14:59:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:29,764 INFO L93 Difference]: Finished difference Result 3292 states and 4268 transitions. [2022-11-23 14:59:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:29,765 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 [2022-11-23 14:59:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:29,774 INFO L225 Difference]: With dead ends: 3292 [2022-11-23 14:59:29,775 INFO L226 Difference]: Without dead ends: 1654 [2022-11-23 14:59:29,782 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 [2022-11-23 14:59:29,782 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 998 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:29,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 872 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:59:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2022-11-23 14:59:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1654. [2022-11-23 14:59:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 957 states have (on average 1.206896551724138) internal successors, (1155), 1016 states have internal predecessors, (1155), 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) [2022-11-23 14:59:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2138 transitions. [2022-11-23 14:59:30,078 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2138 transitions. Word has length 117 [2022-11-23 14:59:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:30,079 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 2138 transitions. [2022-11-23 14:59:30,079 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) [2022-11-23 14:59:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2138 transitions. [2022-11-23 14:59:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 14:59:30,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:30,082 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] [2022-11-23 14:59:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:59:30,082 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)] === [2022-11-23 14:59:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash 485634421, now seen corresponding path program 1 times [2022-11-23 14:59:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:30,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837429695] [2022-11-23 14:59:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:30,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:30,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837429695] [2022-11-23 14:59:30,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837429695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:30,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:30,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:30,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598709836] [2022-11-23 14:59:30,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:30,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:30,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:30,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:30,288 INFO L87 Difference]: Start difference. First operand 1654 states and 2138 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) [2022-11-23 14:59:31,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:31,260 INFO L93 Difference]: Finished difference Result 1654 states and 2138 transitions. [2022-11-23 14:59:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:31,260 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 [2022-11-23 14:59:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:31,269 INFO L225 Difference]: With dead ends: 1654 [2022-11-23 14:59:31,269 INFO L226 Difference]: Without dead ends: 1652 [2022-11-23 14:59:31,270 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 [2022-11-23 14:59:31,271 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1004 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:31,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1738 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:59:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-23 14:59:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1652. [2022-11-23 14:59:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 956 states have (on average 1.205020920502092) internal successors, (1152), 1014 states have internal predecessors, (1152), 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) [2022-11-23 14:59:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2135 transitions. [2022-11-23 14:59:31,536 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2135 transitions. Word has length 100 [2022-11-23 14:59:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:31,536 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2135 transitions. [2022-11-23 14:59:31,536 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) [2022-11-23 14:59:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2135 transitions. [2022-11-23 14:59:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 14:59:31,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:31,540 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] [2022-11-23 14:59:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:59:31,542 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2022-11-23 14:59:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1369745483, now seen corresponding path program 1 times [2022-11-23 14:59:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:31,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249849197] [2022-11-23 14:59:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-23 14:59:31,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249849197] [2022-11-23 14:59:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249849197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:31,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480387665] [2022-11-23 14:59:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:31,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:31,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:31,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:31,822 INFO L87 Difference]: Start difference. First operand 1652 states and 2135 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) [2022-11-23 14:59:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:33,320 INFO L93 Difference]: Finished difference Result 1675 states and 2149 transitions. [2022-11-23 14:59:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:59:33,321 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 [2022-11-23 14:59:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:33,339 INFO L225 Difference]: With dead ends: 1675 [2022-11-23 14:59:33,340 INFO L226 Difference]: Without dead ends: 1673 [2022-11-23 14:59:33,341 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 [2022-11-23 14:59:33,342 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 983 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:33,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 3039 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:59:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-11-23 14:59:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1652. [2022-11-23 14:59:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 956 states have (on average 1.202928870292887) internal successors, (1150), 1014 states have internal predecessors, (1150), 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) [2022-11-23 14:59:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2133 transitions. [2022-11-23 14:59:33,570 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2133 transitions. Word has length 127 [2022-11-23 14:59:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:33,571 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2133 transitions. [2022-11-23 14:59:33,571 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) [2022-11-23 14:59:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2133 transitions. [2022-11-23 14:59:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 14:59:33,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:33,574 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] [2022-11-23 14:59:33,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:59:33,574 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-11-23 14:59:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -299355369, now seen corresponding path program 1 times [2022-11-23 14:59:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:33,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395017338] [2022-11-23 14:59:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:33,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:33,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395017338] [2022-11-23 14:59:33,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395017338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:33,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:33,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666286269] [2022-11-23 14:59:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:33,794 INFO L87 Difference]: Start difference. First operand 1652 states and 2133 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) [2022-11-23 14:59:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:34,896 INFO L93 Difference]: Finished difference Result 1652 states and 2133 transitions. [2022-11-23 14:59:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:34,897 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 [2022-11-23 14:59:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:34,905 INFO L225 Difference]: With dead ends: 1652 [2022-11-23 14:59:34,906 INFO L226 Difference]: Without dead ends: 1650 [2022-11-23 14:59:34,906 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 [2022-11-23 14:59:34,907 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1001 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:34,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1734 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:59:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-11-23 14:59:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-11-23 14:59:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 955 states have (on average 1.2010471204188482) 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) [2022-11-23 14:59:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2130 transitions. [2022-11-23 14:59:35,254 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2130 transitions. Word has length 105 [2022-11-23 14:59:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:35,254 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2130 transitions. [2022-11-23 14:59:35,255 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) [2022-11-23 14:59:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2130 transitions. [2022-11-23 14:59:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 14:59:35,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:35,258 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] [2022-11-23 14:59:35,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 14:59:35,258 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)] === [2022-11-23 14:59:35,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1359241489, now seen corresponding path program 1 times [2022-11-23 14:59:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:35,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045034850] [2022-11-23 14:59:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:35,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-23 14:59:35,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:35,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045034850] [2022-11-23 14:59:35,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045034850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:35,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:35,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:59:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638434864] [2022-11-23 14:59:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:59:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:59:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:59:35,739 INFO L87 Difference]: Start difference. First operand 1650 states and 2130 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) [2022-11-23 14:59:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:37,542 INFO L93 Difference]: Finished difference Result 1694 states and 2172 transitions. [2022-11-23 14:59:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:59:37,542 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 [2022-11-23 14:59:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:37,549 INFO L225 Difference]: With dead ends: 1694 [2022-11-23 14:59:37,549 INFO L226 Difference]: Without dead ends: 1692 [2022-11-23 14:59:37,550 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 [2022-11-23 14:59:37,550 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 951 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:37,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 2647 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:59:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-11-23 14:59:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2022-11-23 14:59:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 978 states have (on average 1.196319018404908) internal successors, (1170), 1034 states have internal predecessors, (1170), 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) [2022-11-23 14:59:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2169 transitions. [2022-11-23 14:59:37,745 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2169 transitions. Word has length 131 [2022-11-23 14:59:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:37,746 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2169 transitions. [2022-11-23 14:59:37,746 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) [2022-11-23 14:59:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2169 transitions. [2022-11-23 14:59:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 14:59:37,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:37,749 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] [2022-11-23 14:59:37,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 14:59:37,750 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)] === [2022-11-23 14:59:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 941996136, now seen corresponding path program 1 times [2022-11-23 14:59:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:37,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588606494] [2022-11-23 14:59:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-23 14:59:38,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:38,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588606494] [2022-11-23 14:59:38,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588606494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:38,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:38,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:59:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105715688] [2022-11-23 14:59:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:38,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:59:38,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:59:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:59:38,563 INFO L87 Difference]: Start difference. First operand 1692 states and 2169 transitions. Second operand has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 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) [2022-11-23 14:59:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:45,057 INFO L93 Difference]: Finished difference Result 4346 states and 5897 transitions. [2022-11-23 14:59:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:59:45,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 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 134 [2022-11-23 14:59:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:45,072 INFO L225 Difference]: With dead ends: 4346 [2022-11-23 14:59:45,072 INFO L226 Difference]: Without dead ends: 2674 [2022-11-23 14:59:45,080 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 [2022-11-23 14:59:45,081 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 452 mSDsluCounter, 10888 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 12361 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:45,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 12361 Invalid, 2547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [339 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:59:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-23 14:59:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1704. [2022-11-23 14:59:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 986 states have (on average 1.1947261663286004) internal successors, (1178), 1042 states have internal predecessors, (1178), 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) [2022-11-23 14:59:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2185 transitions. [2022-11-23 14:59:45,393 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2185 transitions. Word has length 134 [2022-11-23 14:59:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:45,393 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2185 transitions. [2022-11-23 14:59:45,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 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) [2022-11-23 14:59:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2185 transitions. [2022-11-23 14:59:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 14:59:45,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:45,397 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] [2022-11-23 14:59:45,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 14:59:45,397 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)] === [2022-11-23 14:59:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1427166701, now seen corresponding path program 1 times [2022-11-23 14:59:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899672908] [2022-11-23 14:59:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:45,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899672908] [2022-11-23 14:59:45,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899672908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:45,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:45,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491094177] [2022-11-23 14:59:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:45,850 INFO L87 Difference]: Start difference. First operand 1704 states and 2185 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) [2022-11-23 14:59:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:47,230 INFO L93 Difference]: Finished difference Result 1704 states and 2185 transitions. [2022-11-23 14:59:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:47,230 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 [2022-11-23 14:59:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:47,239 INFO L225 Difference]: With dead ends: 1704 [2022-11-23 14:59:47,239 INFO L226 Difference]: Without dead ends: 1702 [2022-11-23 14:59:47,240 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 [2022-11-23 14:59:47,241 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 996 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:47,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 1726 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:59:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-23 14:59:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2022-11-23 14:59:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 985 states have (on average 1.1928934010152283) internal successors, (1175), 1040 states have internal predecessors, (1175), 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) [2022-11-23 14:59:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2182 transitions. [2022-11-23 14:59:47,630 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2182 transitions. Word has length 110 [2022-11-23 14:59:47,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:47,630 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2182 transitions. [2022-11-23 14:59:47,630 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) [2022-11-23 14:59:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2182 transitions. [2022-11-23 14:59:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 14:59:47,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:47,637 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] [2022-11-23 14:59:47,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 14:59:47,637 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)] === [2022-11-23 14:59:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 282484226, now seen corresponding path program 1 times [2022-11-23 14:59:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:47,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934766166] [2022-11-23 14:59:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:47,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-23 14:59:48,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934766166] [2022-11-23 14:59:48,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934766166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:48,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:48,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:59:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42340427] [2022-11-23 14:59:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:59:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:59:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:59:48,395 INFO L87 Difference]: Start difference. First operand 1702 states and 2182 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) [2022-11-23 14:59:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:54,767 INFO L93 Difference]: Finished difference Result 4237 states and 5734 transitions. [2022-11-23 14:59:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:59:54,771 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 [2022-11-23 14:59:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:54,782 INFO L225 Difference]: With dead ends: 4237 [2022-11-23 14:59:54,782 INFO L226 Difference]: Without dead ends: 2555 [2022-11-23 14:59:54,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:59:54,790 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 584 mSDsluCounter, 11436 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 12845 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:54,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 12845 Invalid, 3148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 14:59:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2022-11-23 14:59:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1721. [2022-11-23 14:59:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 994 states have (on average 1.1911468812877264) internal successors, (1184), 1048 states have internal predecessors, (1184), 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) [2022-11-23 14:59:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2214 transitions. [2022-11-23 14:59:55,172 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2214 transitions. Word has length 136 [2022-11-23 14:59:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:55,172 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2214 transitions. [2022-11-23 14:59:55,173 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) [2022-11-23 14:59:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2214 transitions. [2022-11-23 14:59:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 14:59:55,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:55,175 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] [2022-11-23 14:59:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 14:59:55,176 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)] === [2022-11-23 14:59:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2113001866, now seen corresponding path program 1 times [2022-11-23 14:59:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:55,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687587719] [2022-11-23 14:59:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:55,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:55,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687587719] [2022-11-23 14:59:55,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687587719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:55,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:55,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:55,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81794337] [2022-11-23 14:59:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:55,380 INFO L87 Difference]: Start difference. First operand 1721 states and 2214 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) [2022-11-23 14:59:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:56,542 INFO L93 Difference]: Finished difference Result 1721 states and 2214 transitions. [2022-11-23 14:59:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:56,542 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 [2022-11-23 14:59:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:56,549 INFO L225 Difference]: With dead ends: 1721 [2022-11-23 14:59:56,549 INFO L226 Difference]: Without dead ends: 1719 [2022-11-23 14:59:56,551 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 [2022-11-23 14:59:56,551 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 993 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:56,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1722 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:59:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-23 14:59:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-11-23 14:59:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 993 states have (on average 1.18932527693857) internal successors, (1181), 1046 states have internal predecessors, (1181), 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) [2022-11-23 14:59:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2211 transitions. [2022-11-23 14:59:56,881 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2211 transitions. Word has length 115 [2022-11-23 14:59:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:56,882 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2211 transitions. [2022-11-23 14:59:56,882 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) [2022-11-23 14:59:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2211 transitions. [2022-11-23 14:59:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-23 14:59:56,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:56,886 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] [2022-11-23 14:59:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 14:59:56,886 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)] === [2022-11-23 14:59:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1924094184, now seen corresponding path program 1 times [2022-11-23 14:59:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:56,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802365082] [2022-11-23 14:59:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:56,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:57,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:57,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802365082] [2022-11-23 14:59:57,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802365082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:57,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:57,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:57,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141390417] [2022-11-23 14:59:57,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:57,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:57,060 INFO L87 Difference]: Start difference. First operand 1719 states and 2211 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) [2022-11-23 14:59:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:58,260 INFO L93 Difference]: Finished difference Result 1719 states and 2211 transitions. [2022-11-23 14:59:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:58,261 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 [2022-11-23 14:59:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:58,267 INFO L225 Difference]: With dead ends: 1719 [2022-11-23 14:59:58,267 INFO L226 Difference]: Without dead ends: 1717 [2022-11-23 14:59:58,268 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 [2022-11-23 14:59:58,268 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 990 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:58,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1718 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:59:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-11-23 14:59:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1717. [2022-11-23 14:59:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 992 states have (on average 1.1875) internal successors, (1178), 1044 states have internal predecessors, (1178), 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) [2022-11-23 14:59:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2208 transitions. [2022-11-23 14:59:58,566 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2208 transitions. Word has length 120 [2022-11-23 14:59:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2208 transitions. [2022-11-23 14:59:58,567 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) [2022-11-23 14:59:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2208 transitions. [2022-11-23 14:59:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 14:59:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:58,570 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] [2022-11-23 14:59:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 14:59:58,570 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)] === [2022-11-23 14:59:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -736849666, now seen corresponding path program 1 times [2022-11-23 14:59:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:58,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581030909] [2022-11-23 14:59:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:58,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:58,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581030909] [2022-11-23 14:59:58,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581030909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:58,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:58,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:59:58,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140154646] [2022-11-23 14:59:58,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:58,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:59:58,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:59:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:59:58,750 INFO L87 Difference]: Start difference. First operand 1717 states and 2208 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) [2022-11-23 14:59:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:59,845 INFO L93 Difference]: Finished difference Result 1717 states and 2208 transitions. [2022-11-23 14:59:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:59:59,846 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 [2022-11-23 14:59:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:59,852 INFO L225 Difference]: With dead ends: 1717 [2022-11-23 14:59:59,852 INFO L226 Difference]: Without dead ends: 1715 [2022-11-23 14:59:59,853 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 [2022-11-23 14:59:59,854 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 987 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:59,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1714 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:59:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-11-23 15:00:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2022-11-23 15:00:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 991 states have (on average 1.1856710393541876) internal successors, (1175), 1042 states have internal predecessors, (1175), 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) [2022-11-23 15:00:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2205 transitions. [2022-11-23 15:00:00,192 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2205 transitions. Word has length 125 [2022-11-23 15:00:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:00,193 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2205 transitions. [2022-11-23 15:00:00,193 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) [2022-11-23 15:00:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2205 transitions. [2022-11-23 15:00:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 15:00:00,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:00,196 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] [2022-11-23 15:00:00,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 15:00:00,196 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)] === [2022-11-23 15:00:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -776639370, now seen corresponding path program 1 times [2022-11-23 15:00:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:00,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433242313] [2022-11-23 15:00:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:00:00,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:00,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433242313] [2022-11-23 15:00:00,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433242313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:00,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:00,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:00:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385692697] [2022-11-23 15:00:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:00,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:00:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:00:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:00:00,380 INFO L87 Difference]: Start difference. First operand 1715 states and 2205 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) [2022-11-23 15:00:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:01,530 INFO L93 Difference]: Finished difference Result 1715 states and 2205 transitions. [2022-11-23 15:00:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:00:01,530 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 [2022-11-23 15:00:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:01,536 INFO L225 Difference]: With dead ends: 1715 [2022-11-23 15:00:01,537 INFO L226 Difference]: Without dead ends: 1713 [2022-11-23 15:00:01,538 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 [2022-11-23 15:00:01,538 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 984 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:01,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1710 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:00:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-11-23 15:00:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2022-11-23 15:00:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 990 states have (on average 1.183838383838384) internal successors, (1172), 1040 states have internal predecessors, (1172), 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) [2022-11-23 15:00:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2202 transitions. [2022-11-23 15:00:01,957 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2202 transitions. Word has length 130 [2022-11-23 15:00:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:01,957 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2202 transitions. [2022-11-23 15:00:01,958 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) [2022-11-23 15:00:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2202 transitions. [2022-11-23 15:00:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 15:00:01,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:01,960 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] [2022-11-23 15:00:01,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 15:00:01,961 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)] === [2022-11-23 15:00:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1668146862, now seen corresponding path program 1 times [2022-11-23 15:00:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:01,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512771696] [2022-11-23 15:00:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-23 15:00:02,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512771696] [2022-11-23 15:00:02,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512771696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384751101] [2022-11-23 15:00:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:02,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:02,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:02,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:00:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:03,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:00:03,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-23 15:00:03,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:03,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384751101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:03,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:03,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 14 [2022-11-23 15:00:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382356236] [2022-11-23 15:00:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:00:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:00:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:00:03,808 INFO L87 Difference]: Start difference. First operand 1713 states and 2202 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) [2022-11-23 15:00:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:08,236 INFO L93 Difference]: Finished difference Result 2250 states and 2843 transitions. [2022-11-23 15:00:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:00:08,237 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 [2022-11-23 15:00:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:08,244 INFO L225 Difference]: With dead ends: 2250 [2022-11-23 15:00:08,244 INFO L226 Difference]: Without dead ends: 1746 [2022-11-23 15:00:08,247 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 [2022-11-23 15:00:08,247 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 24 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8457 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:08,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8457 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 15:00:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-11-23 15:00:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1722. [2022-11-23 15:00:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 995 states have (on average 1.1829145728643216) internal successors, (1177), 1045 states have internal predecessors, (1177), 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) [2022-11-23 15:00:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2215 transitions. [2022-11-23 15:00:08,719 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2215 transitions. Word has length 157 [2022-11-23 15:00:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:08,719 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2215 transitions. [2022-11-23 15:00:08,719 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) [2022-11-23 15:00:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2215 transitions. [2022-11-23 15:00:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 15:00:08,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:08,722 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] [2022-11-23 15:00:08,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:08,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-23 15:00:08,931 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)] === [2022-11-23 15:00:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1663659430, now seen corresponding path program 1 times [2022-11-23 15:00:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:08,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566428316] [2022-11-23 15:00:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 15:00:09,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566428316] [2022-11-23 15:00:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566428316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:00:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184391311] [2022-11-23 15:00:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:00:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:00:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:00:09,157 INFO L87 Difference]: Start difference. First operand 1722 states and 2215 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) [2022-11-23 15:00:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:10,655 INFO L93 Difference]: Finished difference Result 1722 states and 2215 transitions. [2022-11-23 15:00:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:00:10,656 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 [2022-11-23 15:00:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:10,661 INFO L225 Difference]: With dead ends: 1722 [2022-11-23 15:00:10,661 INFO L226 Difference]: Without dead ends: 1504 [2022-11-23 15:00:10,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:00:10,663 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 981 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1708 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 [2022-11-23 15:00:10,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1708 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:00:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-11-23 15:00:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2022-11-23 15:00:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 876 states have (on average 1.2009132420091324) internal successors, (1052), 922 states have internal predecessors, (1052), 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) [2022-11-23 15:00:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1965 transitions. [2022-11-23 15:00:11,032 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1965 transitions. Word has length 135 [2022-11-23 15:00:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:11,032 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1965 transitions. [2022-11-23 15:00:11,032 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) [2022-11-23 15:00:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1965 transitions. [2022-11-23 15:00:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 15:00:11,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:11,035 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] [2022-11-23 15:00:11,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 15:00:11,036 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)] === [2022-11-23 15:00:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -745740765, now seen corresponding path program 1 times [2022-11-23 15:00:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:11,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689922706] [2022-11-23 15:00:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-23 15:00:11,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:11,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689922706] [2022-11-23 15:00:11,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689922706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:11,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844540559] [2022-11-23 15:00:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:11,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:11,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:11,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:11,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:00:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:12,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:00:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-23 15:00:12,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:12,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844540559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:12,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:12,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 14 [2022-11-23 15:00:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18542637] [2022-11-23 15:00:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:12,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:00:12,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:00:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:00:12,706 INFO L87 Difference]: Start difference. First operand 1504 states and 1965 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) [2022-11-23 15:00:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:16,499 INFO L93 Difference]: Finished difference Result 1830 states and 2373 transitions. [2022-11-23 15:00:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:00:16,500 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 [2022-11-23 15:00:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:16,505 INFO L225 Difference]: With dead ends: 1830 [2022-11-23 15:00:16,506 INFO L226 Difference]: Without dead ends: 1504 [2022-11-23 15:00:16,507 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 [2022-11-23 15:00:16,508 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 21 mSDsluCounter, 7292 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8029 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:16,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8029 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 15:00:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-11-23 15:00:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2022-11-23 15:00:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 876 states have (on average 1.1997716894977168) internal successors, (1051), 921 states have internal predecessors, (1051), 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) [2022-11-23 15:00:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1964 transitions. [2022-11-23 15:00:16,950 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1964 transitions. Word has length 162 [2022-11-23 15:00:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:16,951 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1964 transitions. [2022-11-23 15:00:16,951 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) [2022-11-23 15:00:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1964 transitions. [2022-11-23 15:00:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-23 15:00:16,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:16,954 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] [2022-11-23 15:00:16,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-23 15:00:17,163 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)] === [2022-11-23 15:00:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1552640051, now seen corresponding path program 1 times [2022-11-23 15:00:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:17,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046458899] [2022-11-23 15:00:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-11-23 15:00:17,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046458899] [2022-11-23 15:00:17,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046458899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:17,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:17,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:00:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432494591] [2022-11-23 15:00:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:17,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:00:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:00:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:00:17,895 INFO L87 Difference]: Start difference. First operand 1504 states and 1964 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 15:00:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:19,873 INFO L93 Difference]: Finished difference Result 2104 states and 2705 transitions. [2022-11-23 15:00:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:00:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 170 [2022-11-23 15:00:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:19,879 INFO L225 Difference]: With dead ends: 2104 [2022-11-23 15:00:19,879 INFO L226 Difference]: Without dead ends: 1516 [2022-11-23 15:00:19,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:00:19,882 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4363 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 15:00:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-11-23 15:00:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1512. [2022-11-23 15:00:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 880 states have (on average 1.1988636363636365) internal successors, (1055), 929 states have internal predecessors, (1055), 449 states have call successors, (449), 171 states have call predecessors, (449), 173 states have return successors, (475), 441 states have call predecessors, (475), 446 states have call successors, (475) [2022-11-23 15:00:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1979 transitions. [2022-11-23 15:00:20,296 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1979 transitions. Word has length 170 [2022-11-23 15:00:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1979 transitions. [2022-11-23 15:00:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 1 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-23 15:00:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1979 transitions. [2022-11-23 15:00:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-23 15:00:20,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:20,300 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] [2022-11-23 15:00:20,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 15:00:20,300 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)] === [2022-11-23 15:00:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -770122110, now seen corresponding path program 1 times [2022-11-23 15:00:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576890824] [2022-11-23 15:00:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-23 15:00:21,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576890824] [2022-11-23 15:00:21,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576890824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621147701] [2022-11-23 15:00:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:21,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:21,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:21,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:00:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:21,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 15:00:21,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-23 15:00:21,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:21,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621147701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:21,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:21,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2022-11-23 15:00:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177719262] [2022-11-23 15:00:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:00:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:00:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:00:21,820 INFO L87 Difference]: Start difference. First operand 1512 states and 1979 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) [2022-11-23 15:00:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:24,447 INFO L93 Difference]: Finished difference Result 2189 states and 2941 transitions. [2022-11-23 15:00:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:00:24,448 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 [2022-11-23 15:00:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:24,454 INFO L225 Difference]: With dead ends: 2189 [2022-11-23 15:00:24,455 INFO L226 Difference]: Without dead ends: 1853 [2022-11-23 15:00:24,457 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 [2022-11-23 15:00:24,457 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 218 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 4761 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:24,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 4761 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 15:00:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2022-11-23 15:00:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1514. [2022-11-23 15:00:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 882 states have (on average 1.1984126984126984) internal successors, (1057), 931 states have internal predecessors, (1057), 449 states have call successors, (449), 171 states have call predecessors, (449), 173 states have return successors, (475), 441 states have call predecessors, (475), 446 states have call successors, (475) [2022-11-23 15:00:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1981 transitions. [2022-11-23 15:00:24,854 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1981 transitions. Word has length 183 [2022-11-23 15:00:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:24,855 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1981 transitions. [2022-11-23 15:00:24,855 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) [2022-11-23 15:00:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1981 transitions. [2022-11-23 15:00:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-23 15:00:24,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:24,857 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] [2022-11-23 15:00:24,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:25,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:25,072 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)] === [2022-11-23 15:00:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 18538414, now seen corresponding path program 1 times [2022-11-23 15:00:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:25,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670974347] [2022-11-23 15:00:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:25,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-23 15:00:26,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:26,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670974347] [2022-11-23 15:00:26,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670974347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:26,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903044527] [2022-11-23 15:00:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:26,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:26,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:26,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:26,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:00:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:26,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 15:00:26,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-23 15:00:27,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:27,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903044527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:27,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:27,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 16 [2022-11-23 15:00:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355363647] [2022-11-23 15:00:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:27,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:00:27,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:00:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:00:27,098 INFO L87 Difference]: Start difference. First operand 1514 states and 1981 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) [2022-11-23 15:00:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:30,771 INFO L93 Difference]: Finished difference Result 2180 states and 2817 transitions. [2022-11-23 15:00:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:00:30,773 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 [2022-11-23 15:00:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:30,778 INFO L225 Difference]: With dead ends: 2180 [2022-11-23 15:00:30,778 INFO L226 Difference]: Without dead ends: 1518 [2022-11-23 15:00:30,781 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 [2022-11-23 15:00:30,782 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 32 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8046 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:30,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 8046 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 15:00:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-11-23 15:00:31,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1512. [2022-11-23 15:00:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 881 states have (on average 1.1963677639046537) internal successors, (1054), 930 states have internal predecessors, (1054), 450 states have call successors, (450), 169 states have call predecessors, (450), 171 states have return successors, (476), 442 states have call predecessors, (476), 447 states have call successors, (476) [2022-11-23 15:00:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1980 transitions. [2022-11-23 15:00:31,218 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1980 transitions. Word has length 190 [2022-11-23 15:00:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:31,218 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1980 transitions. [2022-11-23 15:00:31,219 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) [2022-11-23 15:00:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1980 transitions. [2022-11-23 15:00:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-23 15:00:31,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:31,221 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] [2022-11-23 15:00:31,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:31,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:31,429 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)] === [2022-11-23 15:00:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:31,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1966981529, now seen corresponding path program 1 times [2022-11-23 15:00:31,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:31,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532534500] [2022-11-23 15:00:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:31,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 15:00:31,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:31,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532534500] [2022-11-23 15:00:31,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532534500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:31,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:31,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:00:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710013248] [2022-11-23 15:00:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:00:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:00:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:00:31,784 INFO L87 Difference]: Start difference. First operand 1512 states and 1980 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) [2022-11-23 15:00:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:34,100 INFO L93 Difference]: Finished difference Result 1966 states and 2680 transitions. [2022-11-23 15:00:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:00:34,100 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 [2022-11-23 15:00:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:34,106 INFO L225 Difference]: With dead ends: 1966 [2022-11-23 15:00:34,106 INFO L226 Difference]: Without dead ends: 1964 [2022-11-23 15:00:34,107 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 [2022-11-23 15:00:34,108 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 978 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:34,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 3237 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 15:00:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-23 15:00:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1514. [2022-11-23 15:00:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 883 states have (on average 1.1959229898074746) internal successors, (1056), 931 states have internal predecessors, (1056), 450 states have call successors, (450), 169 states have call predecessors, (450), 171 states have return successors, (476), 443 states have call predecessors, (476), 447 states have call successors, (476) [2022-11-23 15:00:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1982 transitions. [2022-11-23 15:00:34,559 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1982 transitions. Word has length 202 [2022-11-23 15:00:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:34,559 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1982 transitions. [2022-11-23 15:00:34,560 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) [2022-11-23 15:00:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1982 transitions. [2022-11-23 15:00:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-23 15:00:34,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:34,562 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] [2022-11-23 15:00:34,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 15:00:34,563 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)] === [2022-11-23 15:00:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1647028617, now seen corresponding path program 1 times [2022-11-23 15:00:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:34,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226041050] [2022-11-23 15:00:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 15:00:34,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226041050] [2022-11-23 15:00:34,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226041050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:34,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:34,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:00:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955763153] [2022-11-23 15:00:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:00:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:00:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:00:34,888 INFO L87 Difference]: Start difference. First operand 1514 states and 1982 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) [2022-11-23 15:00:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:37,275 INFO L93 Difference]: Finished difference Result 3392 states and 4546 transitions. [2022-11-23 15:00:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:00:37,276 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 [2022-11-23 15:00:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:37,282 INFO L225 Difference]: With dead ends: 3392 [2022-11-23 15:00:37,282 INFO L226 Difference]: Without dead ends: 1898 [2022-11-23 15:00:37,287 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 [2022-11-23 15:00:37,288 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 108 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:37,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 4360 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 15:00:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-11-23 15:00:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1522. [2022-11-23 15:00:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 889 states have (on average 1.1946006749156355) internal successors, (1062), 937 states have internal predecessors, (1062), 450 states have call successors, (450), 169 states have call predecessors, (450), 173 states have return successors, (480), 445 states have call predecessors, (480), 447 states have call successors, (480) [2022-11-23 15:00:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1992 transitions. [2022-11-23 15:00:37,607 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1992 transitions. Word has length 213 [2022-11-23 15:00:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1992 transitions. [2022-11-23 15:00:37,608 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) [2022-11-23 15:00:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1992 transitions. [2022-11-23 15:00:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-23 15:00:37,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:37,611 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] [2022-11-23 15:00:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 15:00:37,612 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)] === [2022-11-23 15:00:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1301938378, now seen corresponding path program 1 times [2022-11-23 15:00:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777525850] [2022-11-23 15:00:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:37,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-23 15:00:38,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777525850] [2022-11-23 15:00:38,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777525850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338249523] [2022-11-23 15:00:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:38,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:38,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:38,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:00:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:00:39,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-11-23 15:00:39,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:39,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338249523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:39,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:39,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2022-11-23 15:00:39,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387367071] [2022-11-23 15:00:39,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:39,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 15:00:39,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 15:00:39,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:00:39,575 INFO L87 Difference]: Start difference. First operand 1522 states and 1992 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) [2022-11-23 15:00:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:46,913 INFO L93 Difference]: Finished difference Result 3800 states and 5177 transitions. [2022-11-23 15:00:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 15:00:46,913 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 [2022-11-23 15:00:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:46,918 INFO L225 Difference]: With dead ends: 3800 [2022-11-23 15:00:46,918 INFO L226 Difference]: Without dead ends: 2296 [2022-11-23 15:00:46,922 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 [2022-11-23 15:00:46,923 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 550 mSDsluCounter, 13033 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 14207 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:46,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 14207 Invalid, 3550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:00:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-11-23 15:00:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1522. [2022-11-23 15:00:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 889 states have (on average 1.1946006749156355) internal successors, (1062), 937 states have internal predecessors, (1062), 450 states have call successors, (450), 169 states have call predecessors, (450), 173 states have return successors, (480), 445 states have call predecessors, (480), 447 states have call successors, (480) [2022-11-23 15:00:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1992 transitions. [2022-11-23 15:00:47,222 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1992 transitions. Word has length 226 [2022-11-23 15:00:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1992 transitions. [2022-11-23 15:00:47,223 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) [2022-11-23 15:00:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1992 transitions. [2022-11-23 15:00:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-23 15:00:47,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:47,226 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] [2022-11-23 15:00:47,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:47,435 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)] === [2022-11-23 15:00:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -110188336, now seen corresponding path program 1 times [2022-11-23 15:00:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915233532] [2022-11-23 15:00:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 15:00:47,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915233532] [2022-11-23 15:00:47,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915233532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:47,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:47,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:00:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946295946] [2022-11-23 15:00:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:47,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:00:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:00:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:00:47,712 INFO L87 Difference]: Start difference. First operand 1522 states and 1992 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) [2022-11-23 15:00:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:49,129 INFO L93 Difference]: Finished difference Result 3092 states and 4075 transitions. [2022-11-23 15:00:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:00:49,129 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 [2022-11-23 15:00:49,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:49,134 INFO L225 Difference]: With dead ends: 3092 [2022-11-23 15:00:49,134 INFO L226 Difference]: Without dead ends: 1590 [2022-11-23 15:00:49,137 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 [2022-11-23 15:00:49,137 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 42 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2249 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:00:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-11-23 15:00:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1554. [2022-11-23 15:00:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 909 states have (on average 1.199119911991199) internal successors, (1090), 961 states have internal predecessors, (1090), 462 states have call successors, (462), 169 states have call predecessors, (462), 173 states have return successors, (492), 457 states have call predecessors, (492), 459 states have call successors, (492) [2022-11-23 15:00:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2044 transitions. [2022-11-23 15:00:49,596 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2044 transitions. Word has length 244 [2022-11-23 15:00:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:49,597 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2044 transitions. [2022-11-23 15:00:49,597 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) [2022-11-23 15:00:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2044 transitions. [2022-11-23 15:00:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-23 15:00:49,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:49,601 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] [2022-11-23 15:00:49,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-23 15:00:49,601 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)] === [2022-11-23 15:00:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:49,602 INFO L85 PathProgramCache]: Analyzing trace with hash -776923253, now seen corresponding path program 1 times [2022-11-23 15:00:49,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:49,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684296123] [2022-11-23 15:00:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:49,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 15:00:50,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:50,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684296123] [2022-11-23 15:00:50,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684296123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:50,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:00:50,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 15:00:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713609444] [2022-11-23 15:00:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:50,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:00:50,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:00:50,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:00:50,046 INFO L87 Difference]: Start difference. First operand 1554 states and 2044 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) [2022-11-23 15:00:52,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:52,398 INFO L93 Difference]: Finished difference Result 3504 states and 4732 transitions. [2022-11-23 15:00:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:00:52,398 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 [2022-11-23 15:00:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:52,404 INFO L225 Difference]: With dead ends: 3504 [2022-11-23 15:00:52,404 INFO L226 Difference]: Without dead ends: 1970 [2022-11-23 15:00:52,407 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 [2022-11-23 15:00:52,407 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 147 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 5309 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:52,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 5309 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 15:00:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-11-23 15:00:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1566. [2022-11-23 15:00:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 917 states have (on average 1.1973827699018538) internal successors, (1098), 969 states have internal predecessors, (1098), 464 states have call successors, (464), 169 states have call predecessors, (464), 175 states have return successors, (498), 461 states have call predecessors, (498), 461 states have call successors, (498) [2022-11-23 15:00:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2060 transitions. [2022-11-23 15:00:52,714 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2060 transitions. Word has length 248 [2022-11-23 15:00:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:52,714 INFO L495 AbstractCegarLoop]: Abstraction has 1566 states and 2060 transitions. [2022-11-23 15:00:52,715 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) [2022-11-23 15:00:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2060 transitions. [2022-11-23 15:00:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-23 15:00:52,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:00:52,718 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] [2022-11-23 15:00:52,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-23 15:00:52,718 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)] === [2022-11-23 15:00:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:00:52,719 INFO L85 PathProgramCache]: Analyzing trace with hash 244508168, now seen corresponding path program 1 times [2022-11-23 15:00:52,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:00:52,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569919827] [2022-11-23 15:00:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:00:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-23 15:00:53,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:00:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569919827] [2022-11-23 15:00:53,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569919827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:00:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682741110] [2022-11-23 15:00:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:00:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:00:53,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:00:53,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:00:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:00:54,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:00:54,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:00:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-23 15:00:54,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:00:54,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682741110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:00:54,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:00:54,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2022-11-23 15:00:54,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487970845] [2022-11-23 15:00:54,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:00:54,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 15:00:54,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:00:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 15:00:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:00:54,768 INFO L87 Difference]: Start difference. First operand 1566 states and 2060 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) [2022-11-23 15:01:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:03,061 INFO L93 Difference]: Finished difference Result 3920 states and 5373 transitions. [2022-11-23 15:01:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 15:01:03,061 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 [2022-11-23 15:01:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:03,067 INFO L225 Difference]: With dead ends: 3920 [2022-11-23 15:01:03,067 INFO L226 Difference]: Without dead ends: 2372 [2022-11-23 15:01:03,070 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 [2022-11-23 15:01:03,070 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 589 mSDsluCounter, 14339 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 15525 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:03,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 15525 Invalid, 3832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [466 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-23 15:01:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-11-23 15:01:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1558. [2022-11-23 15:01:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 911 states have (on average 1.198682766190999) internal successors, (1092), 963 states have internal predecessors, (1092), 464 states have call successors, (464), 169 states have call predecessors, (464), 173 states have return successors, (494), 459 states have call predecessors, (494), 461 states have call successors, (494) [2022-11-23 15:01:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2050 transitions. [2022-11-23 15:01:03,477 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2050 transitions. Word has length 261 [2022-11-23 15:01:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:03,478 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2050 transitions. [2022-11-23 15:01:03,478 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) [2022-11-23 15:01:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2050 transitions. [2022-11-23 15:01:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-23 15:01:03,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:03,481 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] [2022-11-23 15:01:03,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:01:03,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:03,691 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)] === [2022-11-23 15:01:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1025093937, now seen corresponding path program 1 times [2022-11-23 15:01:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400409999] [2022-11-23 15:01:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-23 15:01:04,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400409999] [2022-11-23 15:01:04,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400409999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:04,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790450337] [2022-11-23 15:01:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:04,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:04,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:04,703 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:04,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:01:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:05,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:01:05,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-11-23 15:01:06,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:01:06,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790450337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:06,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:01:06,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-23 15:01:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883082761] [2022-11-23 15:01:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:06,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:01:06,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:06,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:01:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:01:06,133 INFO L87 Difference]: Start difference. First operand 1558 states and 2050 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) [2022-11-23 15:01:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:07,742 INFO L93 Difference]: Finished difference Result 4505 states and 5897 transitions. [2022-11-23 15:01:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:01:07,742 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 [2022-11-23 15:01:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:07,749 INFO L225 Difference]: With dead ends: 4505 [2022-11-23 15:01:07,749 INFO L226 Difference]: Without dead ends: 2967 [2022-11-23 15:01:07,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:01:07,753 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 601 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:07,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1646 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:01:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-11-23 15:01:08,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2893. [2022-11-23 15:01:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1685 states have (on average 1.200593471810089) internal successors, (2023), 1778 states have internal predecessors, (2023), 864 states have call successors, (864), 324 states have call predecessors, (864), 334 states have return successors, (921), 856 states have call predecessors, (921), 861 states have call successors, (921) [2022-11-23 15:01:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 3808 transitions. [2022-11-23 15:01:08,359 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 3808 transitions. Word has length 261 [2022-11-23 15:01:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:08,360 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 3808 transitions. [2022-11-23 15:01:08,360 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) [2022-11-23 15:01:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 3808 transitions. [2022-11-23 15:01:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-23 15:01:08,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:08,363 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] [2022-11-23 15:01:08,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:01:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-23 15:01:08,578 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)] === [2022-11-23 15:01:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1911627918, now seen corresponding path program 1 times [2022-11-23 15:01:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:08,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430314123] [2022-11-23 15:01:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-23 15:01:09,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:09,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430314123] [2022-11-23 15:01:09,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430314123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538099359] [2022-11-23 15:01:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:09,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:09,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:09,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:01:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:10,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 15:01:10,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-23 15:01:10,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:01:10,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538099359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:01:10,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:01:10,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2022-11-23 15:01:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449187730] [2022-11-23 15:01:10,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:01:10,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:01:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:01:10,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:01:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:01:10,536 INFO L87 Difference]: Start difference. First operand 2893 states and 3808 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) [2022-11-23 15:01:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:01:13,747 INFO L93 Difference]: Finished difference Result 6324 states and 8501 transitions. [2022-11-23 15:01:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:01:13,748 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 [2022-11-23 15:01:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:01:13,759 INFO L225 Difference]: With dead ends: 6324 [2022-11-23 15:01:13,759 INFO L226 Difference]: Without dead ends: 3451 [2022-11-23 15:01:13,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:01:13,768 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 68 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 6109 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:01:13,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 6109 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 15:01:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2022-11-23 15:01:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 2917. [2022-11-23 15:01:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 1701 states have (on average 1.1987066431510875) internal successors, (2039), 1790 states have internal predecessors, (2039), 868 states have call successors, (868), 324 states have call predecessors, (868), 338 states have return successors, (961), 868 states have call predecessors, (961), 865 states have call successors, (961) [2022-11-23 15:01:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3868 transitions. [2022-11-23 15:01:14,425 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3868 transitions. Word has length 266 [2022-11-23 15:01:14,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:01:14,425 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3868 transitions. [2022-11-23 15:01:14,426 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) [2022-11-23 15:01:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3868 transitions. [2022-11-23 15:01:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-23 15:01:14,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:01:14,429 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] [2022-11-23 15:01:14,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 15:01:14,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-23 15:01:14,639 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)] === [2022-11-23 15:01:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:01:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1020129715, now seen corresponding path program 1 times [2022-11-23 15:01:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:01:14,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087014735] [2022-11-23 15:01:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:01:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2022-11-23 15:01:16,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:01:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087014735] [2022-11-23 15:01:16,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087014735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:01:16,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676868604] [2022-11-23 15:01:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:01:16,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:01:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:01:16,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:01:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46a01d5-47d6-4180-8de2-a0502fcb420c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:01:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:01:17,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2184 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 15:01:17,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:01:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-23 15:01:17,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:01:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-23 15:01:18,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676868604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:01:18,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671959598] [2022-11-23 15:01:18,043 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-23 15:01:18,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:01:18,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:01:18,052 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:01:18,052 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:01:19,471 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 [2022-11-23 15:01:19,683 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 [2022-11-23 15:01:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:24,382 INFO L321 Elim1Store]: treesize reduction 576, result has 33.4 percent of original size [2022-11-23 15:01:24,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 563 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 64 case distinctions, treesize of input 182 treesize of output 409 [2022-11-23 15:01:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:25,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 33 select indices, 33 select index equivalence classes, 562 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 270 [2022-11-23 15:01:40,543 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 [2022-11-23 15:01:40,548 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 [2022-11-23 15:01:42,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:42,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 562 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-23 15:01:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:42,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-23 15:01:45,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:45,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-23 15:01:45,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:45,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 562 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-23 15:01:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:52,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:52,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:53,654 INFO L321 Elim1Store]: treesize reduction 96, result has 48.1 percent of original size [2022-11-23 15:01:53,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 5223 treesize of output 5066 [2022-11-23 15:01:54,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:54,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:54,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:55,048 INFO L321 Elim1Store]: treesize reduction 124, result has 33.0 percent of original size [2022-11-23 15:01:55,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 67 select indices, 67 select index equivalence classes, 442 disjoint index pairs (out of 2211 index pairs), introduced 67 new quantified variables, introduced 8 case distinctions, treesize of input 5159 treesize of output 4974 [2022-11-23 15:01:56,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,182 INFO L217 Elim1Store]: Index analysis took 128 ms [2022-11-23 15:01:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:56,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:56,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:56,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:01:56,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:01:56,476 INFO L321 Elim1Store]: treesize reduction 160, result has 41.0 percent of original size [2022-11-23 15:01:56,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 99 select indices, 99 select index equivalence classes, 412 disjoint index pairs (out of 4851 index pairs), introduced 99 new quantified variables, introduced 10 case distinctions, treesize of input 5155 treesize of output 4963 [2022-11-23 15:04:45,285 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 1192 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:07:05,435 WARN L233 SmtUtils]: Spent 9.72s on a formula simplification that was a NOOP. DAG size: 1213 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:11:37,018 WARN L233 SmtUtils]: Spent 17.95s on a formula simplification that was a NOOP. DAG size: 1294 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 15:11:55,143 WARN L233 SmtUtils]: Spent 9.03s on a formula simplification that was a NOOP. DAG size: 1286 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)