./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7 --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 5c8407b01b6fe267e548d9a1140b4b401c355e8b9b48d0e3e8bb3d2d9d4dce8c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:59:23,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:59:23,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:59:23,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:59:23,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:59:23,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:59:23,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:59:23,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:59:23,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:59:23,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:59:23,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:59:23,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:59:23,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:59:23,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:59:23,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:59:23,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:59:23,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:59:23,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:59:23,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:59:23,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:59:23,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:59:23,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:59:23,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:59:23,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:59:23,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:59:23,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:59:23,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:59:23,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:59:23,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:59:23,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:59:23,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:59:23,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:59:23,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:59:23,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:59:23,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:59:23,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:59:23,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:59:23,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:59:23,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:59:23,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:59:23,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:59:23,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:59:23,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:59:23,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:59:23,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:59:23,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:59:23,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:59:23,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:59:23,803 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:59:23,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:59:23,803 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:59:23,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:59:23,804 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:59:23,805 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:59:23,805 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:59:23,805 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:59:23,805 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:59:23,806 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:59:23,806 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:59:23,806 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:59:23,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:59:23,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:59:23,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:59:23,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:59:23,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:59:23,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:59:23,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:59:23,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:59:23,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:59:23,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:59:23,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:59:23,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:23,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:59:23,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:59:23,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:59:23,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:59:23,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:59:23,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:59:23,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:59:23,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:59:23,813 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c8407b01b6fe267e548d9a1140b4b401c355e8b9b48d0e3e8bb3d2d9d4dce8c [2021-11-25 19:59:24,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:59:24,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:59:24,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:59:24,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:59:24,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:59:24,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i [2021-11-25 19:59:24,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/data/41f8f79b9/1db443660e6d4047aee7d0ebdfe5710f/FLAG41cd075b1 [2021-11-25 19:59:25,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:59:25,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i [2021-11-25 19:59:25,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/data/41f8f79b9/1db443660e6d4047aee7d0ebdfe5710f/FLAG41cd075b1 [2021-11-25 19:59:25,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/data/41f8f79b9/1db443660e6d4047aee7d0ebdfe5710f [2021-11-25 19:59:25,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:59:25,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:59:25,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:25,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:59:25,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:59:25,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86583b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:25, skipping insertion in model container [2021-11-25 19:59:25,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:25" (1/1) ... [2021-11-25 19:59:25,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:59:25,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:59:30,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479065,479078] [2021-11-25 19:59:30,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479210,479223] [2021-11-25 19:59:30,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479356,479369] [2021-11-25 19:59:30,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479521,479534] [2021-11-25 19:59:30,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479679,479692] [2021-11-25 19:59:30,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479837,479850] [2021-11-25 19:59:30,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479995,480008] [2021-11-25 19:59:30,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480155,480168] [2021-11-25 19:59:30,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480314,480327] [2021-11-25 19:59:30,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480453,480466] [2021-11-25 19:59:30,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480595,480608] [2021-11-25 19:59:30,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480744,480757] [2021-11-25 19:59:30,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480883,480896] [2021-11-25 19:59:30,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481038,481051] [2021-11-25 19:59:30,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481198,481211] [2021-11-25 19:59:30,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481349,481362] [2021-11-25 19:59:30,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481500,481513] [2021-11-25 19:59:30,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481652,481665] [2021-11-25 19:59:30,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481801,481814] [2021-11-25 19:59:30,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481949,481962] [2021-11-25 19:59:30,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482106,482119] [2021-11-25 19:59:30,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482255,482268] [2021-11-25 19:59:30,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482411,482424] [2021-11-25 19:59:30,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482564,482577] [2021-11-25 19:59:30,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482710,482723] [2021-11-25 19:59:30,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482853,482866] [2021-11-25 19:59:30,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483005,483018] [2021-11-25 19:59:30,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483151,483164] [2021-11-25 19:59:30,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483296,483309] [2021-11-25 19:59:30,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483450,483463] [2021-11-25 19:59:30,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483601,483614] [2021-11-25 19:59:30,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483756,483769] [2021-11-25 19:59:30,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483908,483921] [2021-11-25 19:59:30,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484063,484076] [2021-11-25 19:59:30,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484227,484240] [2021-11-25 19:59:30,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484383,484396] [2021-11-25 19:59:30,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484547,484560] [2021-11-25 19:59:30,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484689,484702] [2021-11-25 19:59:30,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484847,484860] [2021-11-25 19:59:30,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485014,485027] [2021-11-25 19:59:30,873 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485173,485186] [2021-11-25 19:59:30,874 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485332,485345] [2021-11-25 19:59:30,874 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485481,485494] [2021-11-25 19:59:30,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485628,485641] [2021-11-25 19:59:30,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485767,485780] [2021-11-25 19:59:30,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485930,485943] [2021-11-25 19:59:30,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486096,486109] [2021-11-25 19:59:30,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486260,486273] [2021-11-25 19:59:30,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486425,486438] [2021-11-25 19:59:30,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486590,486603] [2021-11-25 19:59:30,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486756,486769] [2021-11-25 19:59:30,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486921,486934] [2021-11-25 19:59:30,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487088,487101] [2021-11-25 19:59:30,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487248,487261] [2021-11-25 19:59:30,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487410,487423] [2021-11-25 19:59:30,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487569,487582] [2021-11-25 19:59:30,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487715,487728] [2021-11-25 19:59:30,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487858,487871] [2021-11-25 19:59:30,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488002,488015] [2021-11-25 19:59:30,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488145,488158] [2021-11-25 19:59:30,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488289,488302] [2021-11-25 19:59:30,883 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488430,488443] [2021-11-25 19:59:30,883 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488568,488581] [2021-11-25 19:59:30,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488726,488739] [2021-11-25 19:59:30,884 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488885,488898] [2021-11-25 19:59:30,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489041,489054] [2021-11-25 19:59:30,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489190,489203] [2021-11-25 19:59:30,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489342,489355] [2021-11-25 19:59:30,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489493,489506] [2021-11-25 19:59:30,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489642,489655] [2021-11-25 19:59:30,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489794,489807] [2021-11-25 19:59:30,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489942,489955] [2021-11-25 19:59:30,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490095,490108] [2021-11-25 19:59:30,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490246,490259] [2021-11-25 19:59:30,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490396,490409] [2021-11-25 19:59:30,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490543,490556] [2021-11-25 19:59:30,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490694,490707] [2021-11-25 19:59:30,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490845,490858] [2021-11-25 19:59:30,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490993,491006] [2021-11-25 19:59:30,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491159,491172] [2021-11-25 19:59:30,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491328,491341] [2021-11-25 19:59:30,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491495,491508] [2021-11-25 19:59:30,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491663,491676] [2021-11-25 19:59:30,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491813,491826] [2021-11-25 19:59:30,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491960,491973] [2021-11-25 19:59:30,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492121,492134] [2021-11-25 19:59:30,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492291,492304] [2021-11-25 19:59:30,916 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492453,492466] [2021-11-25 19:59:30,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:30,980 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:59:31,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479065,479078] [2021-11-25 19:59:31,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479210,479223] [2021-11-25 19:59:31,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479356,479369] [2021-11-25 19:59:31,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479521,479534] [2021-11-25 19:59:31,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479679,479692] [2021-11-25 19:59:31,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479837,479850] [2021-11-25 19:59:31,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[479995,480008] [2021-11-25 19:59:31,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480155,480168] [2021-11-25 19:59:31,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480314,480327] [2021-11-25 19:59:31,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480453,480466] [2021-11-25 19:59:31,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480595,480608] [2021-11-25 19:59:31,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480744,480757] [2021-11-25 19:59:31,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[480883,480896] [2021-11-25 19:59:31,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481038,481051] [2021-11-25 19:59:31,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481198,481211] [2021-11-25 19:59:31,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481349,481362] [2021-11-25 19:59:31,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481500,481513] [2021-11-25 19:59:31,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481652,481665] [2021-11-25 19:59:31,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481801,481814] [2021-11-25 19:59:31,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[481949,481962] [2021-11-25 19:59:31,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482106,482119] [2021-11-25 19:59:31,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482255,482268] [2021-11-25 19:59:31,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482411,482424] [2021-11-25 19:59:31,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482564,482577] [2021-11-25 19:59:31,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482710,482723] [2021-11-25 19:59:31,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[482853,482866] [2021-11-25 19:59:31,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483005,483018] [2021-11-25 19:59:31,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483151,483164] [2021-11-25 19:59:31,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483296,483309] [2021-11-25 19:59:31,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483450,483463] [2021-11-25 19:59:31,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483601,483614] [2021-11-25 19:59:31,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483756,483769] [2021-11-25 19:59:31,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[483908,483921] [2021-11-25 19:59:31,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484063,484076] [2021-11-25 19:59:31,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484227,484240] [2021-11-25 19:59:31,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484383,484396] [2021-11-25 19:59:31,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484547,484560] [2021-11-25 19:59:31,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484689,484702] [2021-11-25 19:59:31,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[484847,484860] [2021-11-25 19:59:31,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485014,485027] [2021-11-25 19:59:31,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485173,485186] [2021-11-25 19:59:31,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485332,485345] [2021-11-25 19:59:31,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485481,485494] [2021-11-25 19:59:31,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485628,485641] [2021-11-25 19:59:31,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485767,485780] [2021-11-25 19:59:31,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[485930,485943] [2021-11-25 19:59:31,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486096,486109] [2021-11-25 19:59:31,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486260,486273] [2021-11-25 19:59:31,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486425,486438] [2021-11-25 19:59:31,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486590,486603] [2021-11-25 19:59:31,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486756,486769] [2021-11-25 19:59:31,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[486921,486934] [2021-11-25 19:59:31,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487088,487101] [2021-11-25 19:59:31,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487248,487261] [2021-11-25 19:59:31,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487410,487423] [2021-11-25 19:59:31,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487569,487582] [2021-11-25 19:59:31,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487715,487728] [2021-11-25 19:59:31,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[487858,487871] [2021-11-25 19:59:31,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488002,488015] [2021-11-25 19:59:31,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488145,488158] [2021-11-25 19:59:31,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488289,488302] [2021-11-25 19:59:31,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488430,488443] [2021-11-25 19:59:31,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488568,488581] [2021-11-25 19:59:31,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488726,488739] [2021-11-25 19:59:31,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[488885,488898] [2021-11-25 19:59:31,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489041,489054] [2021-11-25 19:59:31,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489190,489203] [2021-11-25 19:59:31,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489342,489355] [2021-11-25 19:59:31,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489493,489506] [2021-11-25 19:59:31,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489642,489655] [2021-11-25 19:59:31,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489794,489807] [2021-11-25 19:59:31,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[489942,489955] [2021-11-25 19:59:31,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490095,490108] [2021-11-25 19:59:31,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490246,490259] [2021-11-25 19:59:31,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490396,490409] [2021-11-25 19:59:31,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490543,490556] [2021-11-25 19:59:31,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490694,490707] [2021-11-25 19:59:31,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490845,490858] [2021-11-25 19:59:31,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[490993,491006] [2021-11-25 19:59:31,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491159,491172] [2021-11-25 19:59:31,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491328,491341] [2021-11-25 19:59:31,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491495,491508] [2021-11-25 19:59:31,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491663,491676] [2021-11-25 19:59:31,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491813,491826] [2021-11-25 19:59:31,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[491960,491973] [2021-11-25 19:59:31,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492121,492134] [2021-11-25 19:59:31,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492291,492304] [2021-11-25 19:59:31,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i[492453,492466] [2021-11-25 19:59:31,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:31,940 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:59:31,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31 WrapperNode [2021-11-25 19:59:31,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:31,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:31,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:59:31,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:59:31,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,471 INFO L137 Inliner]: procedures = 716, calls = 4114, calls flagged for inlining = 351, calls inlined = 253, statements flattened = 8148 [2021-11-25 19:59:32,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:32,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:59:32,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:59:32,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:59:32,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:59:32,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:59:32,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:59:32,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:59:32,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (1/1) ... [2021-11-25 19:59:32,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:32,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:59:33,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:59:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure put_bh___2 [2021-11-25 19:59:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure put_bh___2 [2021-11-25 19:59:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure put_bh___3 [2021-11-25 19:59:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure put_bh___3 [2021-11-25 19:59:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure set_nlink [2021-11-25 19:59:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure set_nlink [2021-11-25 19:59:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure zlib_uncompress [2021-11-25 19:59:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure zlib_uncompress [2021-11-25 19:59:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 19:59:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-25 19:59:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-25 19:59:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2021-11-25 19:59:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2021-11-25 19:59:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:59:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:59:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 19:59:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 19:59:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ll_rw_block [2021-11-25 19:59:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_rw_block [2021-11-25 19:59:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:59:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:59:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-25 19:59:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-25 19:59:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-25 19:59:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-25 19:59:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:59:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 19:59:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_finish_page [2021-11-25 19:59:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_finish_page [2021-11-25 19:59:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-25 19:59:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-25 19:59:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-25 19:59:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-25 19:59:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_xz_uncompress [2021-11-25 19:59:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_xz_uncompress [2021-11-25 19:59:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_lookup [2021-11-25 19:59:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_lookup [2021-11-25 19:59:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_meta_index_mutex_of_squashfs_sb_info [2021-11-25 19:59:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_meta_index_mutex_of_squashfs_sb_info [2021-11-25 19:59:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:59:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:59:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_copy_data [2021-11-25 19:59:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_copy_data [2021-11-25 19:59:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:59:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:59:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-25 19:59:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-25 19:59:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_inodecache [2021-11-25 19:59:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_inodecache [2021-11-25 19:59:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_read_inode [2021-11-25 19:59:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_read_inode [2021-11-25 19:59:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:59:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure lzo_free [2021-11-25 19:59:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure lzo_free [2021-11-25 19:59:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure init_special_inode [2021-11-25 19:59:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure init_special_inode [2021-11-25 19:59:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure zlib_free [2021-11-25 19:59:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure zlib_free [2021-11-25 19:59:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:59:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:59:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_frag_lookup [2021-11-25 19:59:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_frag_lookup [2021-11-25 19:59:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-25 19:59:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-25 19:59:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 19:59:33,045 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 19:59:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure init_once [2021-11-25 19:59:33,046 INFO L138 BoogieDeclarations]: Found implementation of procedure init_once [2021-11-25 19:59:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:59:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure sb_bread [2021-11-25 19:59:33,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sb_bread [2021-11-25 19:59:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_xz_init [2021-11-25 19:59:33,046 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_xz_init [2021-11-25 19:59:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:59:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-25 19:59:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-25 19:59:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:59:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:59:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-25 19:59:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-25 19:59:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:59:33,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-25 19:59:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-25 19:59:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure read_indexes [2021-11-25 19:59:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure read_indexes [2021-11-25 19:59:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 19:59:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 19:59:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure new_decode_dev [2021-11-25 19:59:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure new_decode_dev [2021-11-25 19:59:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:59:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:59:33,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-25 19:59:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-25 19:59:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 19:59:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 19:59:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-25 19:59:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-25 19:59:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_i [2021-11-25 19:59:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_i [2021-11-25 19:59:33,051 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 19:59:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-25 19:59:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_next_page [2021-11-25 19:59:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_next_page [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-25 19:59:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_export_iget [2021-11-25 19:59:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_export_iget [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:59:33,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_meta_index_mutex_of_squashfs_sb_info [2021-11-25 19:59:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_meta_index_mutex_of_squashfs_sb_info [2021-11-25 19:59:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_user_list [2021-11-25 19:59:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_user_list [2021-11-25 19:59:33,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-25 19:59:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-25 19:59:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure lzo_uncompress [2021-11-25 19:59:33,054 INFO L138 BoogieDeclarations]: Found implementation of procedure lzo_uncompress [2021-11-25 19:59:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:59:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:59:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:59:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:59:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:59:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:59:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:59:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_statfs [2021-11-25 19:59:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_statfs [2021-11-25 19:59:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure release_meta_index [2021-11-25 19:59:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure release_meta_index [2021-11-25 19:59:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-25 19:59:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-25 19:59:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-25 19:59:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-25 19:59:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_cache_delete [2021-11-25 19:59:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_cache_delete [2021-11-25 19:59:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure lz4_comp_opts [2021-11-25 19:59:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure lz4_comp_opts [2021-11-25 19:59:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:59:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:59:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 19:59:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 19:59:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:59:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:59:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_read_metadata [2021-11-25 19:59:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_read_metadata [2021-11-25 19:59:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_read_data [2021-11-25 19:59:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_read_data [2021-11-25 19:59:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure kill_block_super [2021-11-25 19:59:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_block_super [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_page [2021-11-25 19:59:33,058 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_page [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure dir_emit [2021-11-25 19:59:33,058 INFO L138 BoogieDeclarations]: Found implementation of procedure dir_emit [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:59:33,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:59:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_security_list [2021-11-25 19:59:33,058 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_security_list [2021-11-25 19:59:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:59:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 19:59:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_squashfs_stream [2021-11-25 19:59:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_squashfs_stream [2021-11-25 19:59:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageError [2021-11-25 19:59:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageError [2021-11-25 19:59:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_iget [2021-11-25 19:59:33,059 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_iget [2021-11-25 19:59:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_xattr_get [2021-11-25 19:59:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_xattr_get [2021-11-25 19:59:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure lzo_init [2021-11-25 19:59:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure lzo_init [2021-11-25 19:59:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:59:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:59:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_get_id [2021-11-25 19:59:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_get_id [2021-11-25 19:59:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-25 19:59:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-25 19:59:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-25 19:59:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_for_read_section [2021-11-25 19:59:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_for_read_section [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 19:59:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-25 19:59:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_copy_cache [2021-11-25 19:59:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_copy_cache [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:59:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:59:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:59:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-25 19:59:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-25 19:59:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-25 19:59:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-25 19:59:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:59:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure page_follow_link_light [2021-11-25 19:59:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure page_follow_link_light [2021-11-25 19:59:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure put_bh [2021-11-25 19:59:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure put_bh [2021-11-25 19:59:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_xz_free [2021-11-25 19:59:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_xz_free [2021-11-25 19:59:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:59:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_symlink_readpage [2021-11-25 19:59:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_symlink_readpage [2021-11-25 19:59:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 19:59:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 19:59:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-25 19:59:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-25 19:59:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:59:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:59:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_trusted_list [2021-11-25 19:59:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_trusted_list [2021-11-25 19:59:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 19:59:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 19:59:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-25 19:59:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-25 19:59:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:59:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 19:59:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-25 19:59:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-25 19:59:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_decompressor_destroy [2021-11-25 19:59:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_decompressor_destroy [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_cache_get [2021-11-25 19:59:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_cache_get [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:59:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-25 19:59:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-25 19:59:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_destroy_inode [2021-11-25 19:59:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_destroy_inode [2021-11-25 19:59:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:59:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:59:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:59:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 19:59:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_readdir [2021-11-25 19:59:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_readdir [2021-11-25 19:59:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:59:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-25 19:59:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-25 19:59:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_first_page [2021-11-25 19:59:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_first_page [2021-11-25 19:59:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_readpage [2021-11-25 19:59:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_readpage [2021-11-25 19:59:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:59:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:59:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageUptodate [2021-11-25 19:59:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageUptodate [2021-11-25 19:59:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_cache_put [2021-11-25 19:59:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_cache_put [2021-11-25 19:59:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_95 [2021-11-25 19:59:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_95 [2021-11-25 19:59:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-25 19:59:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-25 19:59:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_96 [2021-11-25 19:59:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_96 [2021-11-25 19:59:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure lz4_init [2021-11-25 19:59:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure lz4_init [2021-11-25 19:59:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 19:59:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 19:59:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:59:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:59:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure zlib_init [2021-11-25 19:59:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure zlib_init [2021-11-25 19:59:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:59:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:59:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-25 19:59:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-25 19:59:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure sb_getblk [2021-11-25 19:59:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure sb_getblk [2021-11-25 19:59:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_xz_comp_opts [2021-11-25 19:59:33,071 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_xz_comp_opts [2021-11-25 19:59:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure squashfs_put_super [2021-11-25 19:59:33,071 INFO L138 BoogieDeclarations]: Found implementation of procedure squashfs_put_super [2021-11-25 19:59:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-25 19:59:33,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-25 19:59:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:59:33,071 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 19:59:34,387 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:59:34,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:59:35,205 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:59:47,238 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:59:48,906 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:59:48,906 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 19:59:48,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:48 BoogieIcfgContainer [2021-11-25 19:59:48,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:59:48,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:59:48,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:59:48,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:59:48,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:59:25" (1/3) ... [2021-11-25 19:59:48,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bff3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:48, skipping insertion in model container [2021-11-25 19:59:48,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:31" (2/3) ... [2021-11-25 19:59:48,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bff3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:48, skipping insertion in model container [2021-11-25 19:59:48,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:48" (3/3) ... [2021-11-25 19:59:48,924 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---fs--squashfs--squashfs.ko.cil.i [2021-11-25 19:59:48,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:59:48,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2021-11-25 19:59:49,012 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:59:49,027 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:59:49,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-11-25 19:59:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 2000 states, 1193 states have (on average 1.3378038558256495) internal successors, (1596), 1286 states have internal predecessors, (1596), 644 states have call successors, (644), 130 states have call predecessors, (644), 129 states have return successors, (634), 617 states have call predecessors, (634), 634 states have call successors, (634) [2021-11-25 19:59:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 19:59:49,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:49,118 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:59:49,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_for_read_sectionErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 19:59:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1000908406, now seen corresponding path program 1 times [2021-11-25 19:59:49,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:59:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4130943] [2021-11-25 19:59:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:49,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:59:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:59:49,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:59:49,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4130943] [2021-11-25 19:59:49,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4130943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:49,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:49,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:59:49,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750949351] [2021-11-25 19:59:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:49,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:59:49,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:59:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:59:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:59:50,044 INFO L87 Difference]: Start difference. First operand has 2000 states, 1193 states have (on average 1.3378038558256495) internal successors, (1596), 1286 states have internal predecessors, (1596), 644 states have call successors, (644), 130 states have call predecessors, (644), 129 states have return successors, (634), 617 states have call predecessors, (634), 634 states have call successors, (634) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:59:54,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:57,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:59:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:59,978 INFO L93 Difference]: Finished difference Result 4630 states and 6855 transitions. [2021-11-25 19:59:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:59:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-11-25 19:59:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:00,030 INFO L225 Difference]: With dead ends: 4630 [2021-11-25 20:00:00,030 INFO L226 Difference]: Without dead ends: 2632 [2021-11-25 20:00:00,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:00,055 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 2800 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 6723 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:00,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2808 Valid, 6723 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 20:00:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-25 20:00:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2620. [2021-11-25 20:00:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 1579 states have (on average 1.304623179227359) internal successors, (2060), 1675 states have internal predecessors, (2060), 826 states have call successors, (826), 184 states have call predecessors, (826), 183 states have return successors, (827), 802 states have call predecessors, (827), 824 states have call successors, (827) [2021-11-25 20:00:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3713 transitions. [2021-11-25 20:00:00,437 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3713 transitions. Word has length 35 [2021-11-25 20:00:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:00,438 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 3713 transitions. [2021-11-25 20:00:00,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3713 transitions. [2021-11-25 20:00:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:00:00,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:00,443 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:00:00,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:00:00,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_for_read_sectionErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash -195380262, now seen corresponding path program 1 times [2021-11-25 20:00:00,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:00,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443635891] [2021-11-25 20:00:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:00,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 20:00:00,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443635891] [2021-11-25 20:00:00,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443635891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:00,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:00,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:00,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522594946] [2021-11-25 20:00:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:00,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:00,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:00,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:00,801 INFO L87 Difference]: Start difference. First operand 2620 states and 3713 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:06,531 INFO L93 Difference]: Finished difference Result 2620 states and 3713 transitions. [2021-11-25 20:00:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:06,532 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-25 20:00:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:06,558 INFO L225 Difference]: With dead ends: 2620 [2021-11-25 20:00:06,558 INFO L226 Difference]: Without dead ends: 2618 [2021-11-25 20:00:06,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:06,566 INFO L933 BasicCegarLoop]: 2482 mSDtfsCounter, 2799 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:06,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 4958 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:00:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-11-25 20:00:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2618. [2021-11-25 20:00:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 1578 states have (on average 1.3041825095057034) internal successors, (2058), 1673 states have internal predecessors, (2058), 826 states have call successors, (826), 184 states have call predecessors, (826), 183 states have return successors, (827), 802 states have call predecessors, (827), 824 states have call successors, (827) [2021-11-25 20:00:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3711 transitions. [2021-11-25 20:00:06,797 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3711 transitions. Word has length 37 [2021-11-25 20:00:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:06,798 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 3711 transitions. [2021-11-25 20:00:06,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3711 transitions. [2021-11-25 20:00:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 20:00:06,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:06,808 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:00:06,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:00:06,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_for_read_sectionErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1222727075, now seen corresponding path program 1 times [2021-11-25 20:00:06,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959280450] [2021-11-25 20:00:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:06,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 20:00:07,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:07,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959280450] [2021-11-25 20:00:07,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959280450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:07,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:07,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:07,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698286030] [2021-11-25 20:00:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:07,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:07,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:07,173 INFO L87 Difference]: Start difference. First operand 2618 states and 3711 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:10,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:12,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:15,427 INFO L93 Difference]: Finished difference Result 2627 states and 3722 transitions. [2021-11-25 20:00:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2021-11-25 20:00:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:15,453 INFO L225 Difference]: With dead ends: 2627 [2021-11-25 20:00:15,453 INFO L226 Difference]: Without dead ends: 2625 [2021-11-25 20:00:15,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:15,457 INFO L933 BasicCegarLoop]: 2484 mSDtfsCounter, 2782 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:15,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2787 Valid, 4981 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 20:00:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-11-25 20:00:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2625. [2021-11-25 20:00:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 1584 states have (on average 1.3042929292929293) internal successors, (2066), 1679 states have internal predecessors, (2066), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3720 transitions. [2021-11-25 20:00:15,650 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 3720 transitions. Word has length 39 [2021-11-25 20:00:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:15,651 INFO L470 AbstractCegarLoop]: Abstraction has 2625 states and 3720 transitions. [2021-11-25 20:00:15,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 3720 transitions. [2021-11-25 20:00:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 20:00:15,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:15,654 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:00:15,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:00:15,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_for_read_sectionErr3ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1775984165, now seen corresponding path program 1 times [2021-11-25 20:00:15,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:15,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159550643] [2021-11-25 20:00:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:15,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 20:00:15,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:15,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159550643] [2021-11-25 20:00:15,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159550643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:15,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:15,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:15,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144674455] [2021-11-25 20:00:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:15,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:15,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:15,900 INFO L87 Difference]: Start difference. First operand 2625 states and 3720 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:20,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:22,334 INFO L93 Difference]: Finished difference Result 2625 states and 3720 transitions. [2021-11-25 20:00:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:22,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-11-25 20:00:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:22,354 INFO L225 Difference]: With dead ends: 2625 [2021-11-25 20:00:22,354 INFO L226 Difference]: Without dead ends: 2623 [2021-11-25 20:00:22,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:22,356 INFO L933 BasicCegarLoop]: 2482 mSDtfsCounter, 2774 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:22,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 4980 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 20:00:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2021-11-25 20:00:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2623. [2021-11-25 20:00:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1583 states have (on average 1.3038534428300694) internal successors, (2064), 1677 states have internal predecessors, (2064), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3718 transitions. [2021-11-25 20:00:22,527 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3718 transitions. Word has length 41 [2021-11-25 20:00:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:22,527 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3718 transitions. [2021-11-25 20:00:22,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:00:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3718 transitions. [2021-11-25 20:00:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 20:00:22,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:22,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:22,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:00:22,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1610845130, now seen corresponding path program 1 times [2021-11-25 20:00:22,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:22,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356020038] [2021-11-25 20:00:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:22,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:00:22,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:22,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356020038] [2021-11-25 20:00:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356020038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:22,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:22,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714753754] [2021-11-25 20:00:22,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:22,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:22,785 INFO L87 Difference]: Start difference. First operand 2623 states and 3718 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-25 20:00:26,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:30,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:30,584 INFO L93 Difference]: Finished difference Result 2623 states and 3718 transitions. [2021-11-25 20:00:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 [2021-11-25 20:00:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:30,604 INFO L225 Difference]: With dead ends: 2623 [2021-11-25 20:00:30,604 INFO L226 Difference]: Without dead ends: 2621 [2021-11-25 20:00:30,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:30,607 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2776 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2781 SdHoareTripleChecker+Valid, 4976 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:30,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2781 Valid, 4976 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 20:00:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-25 20:00:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2621. [2021-11-25 20:00:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 1582 states have (on average 1.3034134007585334) internal successors, (2062), 1675 states have internal predecessors, (2062), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3716 transitions. [2021-11-25 20:00:30,787 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3716 transitions. Word has length 48 [2021-11-25 20:00:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:30,788 INFO L470 AbstractCegarLoop]: Abstraction has 2621 states and 3716 transitions. [2021-11-25 20:00:30,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2021-11-25 20:00:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3716 transitions. [2021-11-25 20:00:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 20:00:30,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:30,790 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:30,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:00:30,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1017087082, now seen corresponding path program 1 times [2021-11-25 20:00:30,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:30,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443690397] [2021-11-25 20:00:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:30,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:00:31,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443690397] [2021-11-25 20:00:31,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443690397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:31,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:31,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211322513] [2021-11-25 20:00:31,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:31,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:31,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:31,028 INFO L87 Difference]: Start difference. First operand 2621 states and 3716 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:00:33,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:36,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:39,340 INFO L93 Difference]: Finished difference Result 2621 states and 3716 transitions. [2021-11-25 20:00:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 [2021-11-25 20:00:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:39,363 INFO L225 Difference]: With dead ends: 2621 [2021-11-25 20:00:39,363 INFO L226 Difference]: Without dead ends: 2619 [2021-11-25 20:00:39,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:39,366 INFO L933 BasicCegarLoop]: 2478 mSDtfsCounter, 2773 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:39,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 4972 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 20:00:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-11-25 20:00:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2021-11-25 20:00:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1581 states have (on average 1.3029728020240354) internal successors, (2060), 1673 states have internal predecessors, (2060), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3714 transitions. [2021-11-25 20:00:39,541 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3714 transitions. Word has length 53 [2021-11-25 20:00:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:39,541 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3714 transitions. [2021-11-25 20:00:39,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 20:00:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3714 transitions. [2021-11-25 20:00:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 20:00:39,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:39,544 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:39,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:00:39,544 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 154990989, now seen corresponding path program 1 times [2021-11-25 20:00:39,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138989193] [2021-11-25 20:00:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:39,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:00:39,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:39,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138989193] [2021-11-25 20:00:39,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138989193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:39,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:39,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:39,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616879953] [2021-11-25 20:00:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:39,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:39,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:39,775 INFO L87 Difference]: Start difference. First operand 2619 states and 3714 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:00:43,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:45,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:47,631 INFO L93 Difference]: Finished difference Result 2619 states and 3714 transitions. [2021-11-25 20:00:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 [2021-11-25 20:00:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:47,651 INFO L225 Difference]: With dead ends: 2619 [2021-11-25 20:00:47,651 INFO L226 Difference]: Without dead ends: 2617 [2021-11-25 20:00:47,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:47,654 INFO L933 BasicCegarLoop]: 2472 mSDtfsCounter, 2779 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2781 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:47,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2781 Valid, 4944 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 20:00:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2021-11-25 20:00:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2617. [2021-11-25 20:00:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 1580 states have (on average 1.3025316455696203) internal successors, (2058), 1671 states have internal predecessors, (2058), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3712 transitions. [2021-11-25 20:00:47,819 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3712 transitions. Word has length 58 [2021-11-25 20:00:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:47,820 INFO L470 AbstractCegarLoop]: Abstraction has 2617 states and 3712 transitions. [2021-11-25 20:00:47,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:00:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3712 transitions. [2021-11-25 20:00:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 20:00:47,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:47,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:47,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:00:47,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:47,823 INFO L85 PathProgramCache]: Analyzing trace with hash -587127176, now seen corresponding path program 1 times [2021-11-25 20:00:47,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:47,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38966640] [2021-11-25 20:00:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:47,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:00:48,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:48,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38966640] [2021-11-25 20:00:48,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38966640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:48,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:48,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:00:48,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704785852] [2021-11-25 20:00:48,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:48,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:00:48,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:48,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:00:48,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:00:48,091 INFO L87 Difference]: Start difference. First operand 2617 states and 3712 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 20:00:51,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:00:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:00:54,067 INFO L93 Difference]: Finished difference Result 2617 states and 3712 transitions. [2021-11-25 20:00:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:00:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 [2021-11-25 20:00:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:00:54,086 INFO L225 Difference]: With dead ends: 2617 [2021-11-25 20:00:54,087 INFO L226 Difference]: Without dead ends: 2615 [2021-11-25 20:00:54,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:00:54,089 INFO L933 BasicCegarLoop]: 2474 mSDtfsCounter, 2767 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:00:54,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 4964 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:00:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-11-25 20:00:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2615. [2021-11-25 20:00:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 1579 states have (on average 1.3020899303356555) internal successors, (2056), 1669 states have internal predecessors, (2056), 826 states have call successors, (826), 185 states have call predecessors, (826), 185 states have return successors, (828), 802 states have call predecessors, (828), 824 states have call successors, (828) [2021-11-25 20:00:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3710 transitions. [2021-11-25 20:00:54,260 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3710 transitions. Word has length 63 [2021-11-25 20:00:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:00:54,260 INFO L470 AbstractCegarLoop]: Abstraction has 2615 states and 3710 transitions. [2021-11-25 20:00:54,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 20:00:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3710 transitions. [2021-11-25 20:00:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 20:00:54,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:00:54,263 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:00:54,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:00:54,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:00:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:00:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 46899514, now seen corresponding path program 1 times [2021-11-25 20:00:54,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:00:54,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429421995] [2021-11-25 20:00:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:54,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:00:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:00:54,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:00:54,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429421995] [2021-11-25 20:00:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429421995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:00:54,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:00:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:00:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120237710] [2021-11-25 20:00:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:00:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:00:54,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:00:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:00:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:00:54,528 INFO L87 Difference]: Start difference. First operand 2615 states and 3710 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:01:00,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:02,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:07,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:10,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:12,774 INFO L93 Difference]: Finished difference Result 2641 states and 3734 transitions. [2021-11-25 20:01:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:01:12,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 64 [2021-11-25 20:01:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:12,791 INFO L225 Difference]: With dead ends: 2641 [2021-11-25 20:01:12,791 INFO L226 Difference]: Without dead ends: 2639 [2021-11-25 20:01:12,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:01:12,794 INFO L933 BasicCegarLoop]: 2909 mSDtfsCounter, 2755 mSDsluCounter, 9433 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 11200 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:12,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2764 Valid, 11200 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2760 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-25 20:01:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-11-25 20:01:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2619. [2021-11-25 20:01:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1581 states have (on average 1.3023402909550916) internal successors, (2059), 1670 states have internal predecessors, (2059), 828 states have call successors, (828), 186 states have call predecessors, (828), 185 states have return successors, (826), 804 states have call predecessors, (826), 826 states have call successors, (826) [2021-11-25 20:01:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3713 transitions. [2021-11-25 20:01:12,965 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3713 transitions. Word has length 64 [2021-11-25 20:01:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:12,966 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3713 transitions. [2021-11-25 20:01:12,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:01:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3713 transitions. [2021-11-25 20:01:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 20:01:12,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:12,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:12,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:01:12,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:12,969 INFO L85 PathProgramCache]: Analyzing trace with hash 64212490, now seen corresponding path program 1 times [2021-11-25 20:01:12,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:12,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795631812] [2021-11-25 20:01:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:12,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:01:13,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795631812] [2021-11-25 20:01:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795631812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:13,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:13,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:01:13,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007998757] [2021-11-25 20:01:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:13,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:01:13,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:01:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:01:13,178 INFO L87 Difference]: Start difference. First operand 2619 states and 3713 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:01:17,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:19,870 INFO L93 Difference]: Finished difference Result 2629 states and 3727 transitions. [2021-11-25 20:01:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:01:19,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 [2021-11-25 20:01:19,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:19,889 INFO L225 Difference]: With dead ends: 2629 [2021-11-25 20:01:19,890 INFO L226 Difference]: Without dead ends: 2627 [2021-11-25 20:01:19,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:01:19,893 INFO L933 BasicCegarLoop]: 2472 mSDtfsCounter, 2764 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2769 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:19,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2769 Valid, 4960 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 20:01:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2021-11-25 20:01:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2617. [2021-11-25 20:01:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 1580 states have (on average 1.3018987341772152) internal successors, (2057), 1668 states have internal predecessors, (2057), 828 states have call successors, (828), 186 states have call predecessors, (828), 185 states have return successors, (826), 804 states have call predecessors, (826), 826 states have call successors, (826) [2021-11-25 20:01:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3711 transitions. [2021-11-25 20:01:20,148 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3711 transitions. Word has length 68 [2021-11-25 20:01:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 2617 states and 3711 transitions. [2021-11-25 20:01:20,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 20:01:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3711 transitions. [2021-11-25 20:01:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:01:20,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:20,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:20,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:01:20,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1497082449, now seen corresponding path program 1 times [2021-11-25 20:01:20,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:20,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15831850] [2021-11-25 20:01:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:20,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:01:20,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:20,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15831850] [2021-11-25 20:01:20,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15831850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:20,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:20,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:01:20,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438087491] [2021-11-25 20:01:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:20,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:01:20,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:01:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:20,368 INFO L87 Difference]: Start difference. First operand 2617 states and 3711 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:01:23,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:26,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:30,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:30,930 INFO L93 Difference]: Finished difference Result 5700 states and 8114 transitions. [2021-11-25 20:01:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:01:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 67 [2021-11-25 20:01:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:30,954 INFO L225 Difference]: With dead ends: 5700 [2021-11-25 20:01:30,954 INFO L226 Difference]: Without dead ends: 3100 [2021-11-25 20:01:30,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:01:30,973 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 2564 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:30,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 4193 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2021-11-25 20:01:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2021-11-25 20:01:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3089. [2021-11-25 20:01:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 1863 states have (on average 1.3022007514761138) internal successors, (2426), 1967 states have internal predecessors, (2426), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:01:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4342 transitions. [2021-11-25 20:01:31,206 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4342 transitions. Word has length 67 [2021-11-25 20:01:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:31,207 INFO L470 AbstractCegarLoop]: Abstraction has 3089 states and 4342 transitions. [2021-11-25 20:01:31,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:01:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4342 transitions. [2021-11-25 20:01:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 20:01:31,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:31,209 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:31,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:01:31,210 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:31,210 INFO L85 PathProgramCache]: Analyzing trace with hash -489572012, now seen corresponding path program 1 times [2021-11-25 20:01:31,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:31,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582476593] [2021-11-25 20:01:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:31,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:01:31,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:31,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582476593] [2021-11-25 20:01:31,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582476593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:31,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:31,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:01:31,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13671244] [2021-11-25 20:01:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:31,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:01:31,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:01:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:01:31,482 INFO L87 Difference]: Start difference. First operand 3089 states and 4342 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 20:01:35,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:37,359 INFO L93 Difference]: Finished difference Result 3104 states and 4363 transitions. [2021-11-25 20:01:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:01:37,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 [2021-11-25 20:01:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:37,387 INFO L225 Difference]: With dead ends: 3104 [2021-11-25 20:01:37,388 INFO L226 Difference]: Without dead ends: 3102 [2021-11-25 20:01:37,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:01:37,390 INFO L933 BasicCegarLoop]: 2470 mSDtfsCounter, 2761 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:37,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2766 Valid, 4956 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:01:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2021-11-25 20:01:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3087. [2021-11-25 20:01:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 1862 states have (on average 1.301825993555317) internal successors, (2424), 1965 states have internal predecessors, (2424), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:01:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4340 transitions. [2021-11-25 20:01:37,620 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4340 transitions. Word has length 73 [2021-11-25 20:01:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:37,620 INFO L470 AbstractCegarLoop]: Abstraction has 3087 states and 4340 transitions. [2021-11-25 20:01:37,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 20:01:37,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4340 transitions. [2021-11-25 20:01:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 20:01:37,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:37,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:37,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:01:37,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1249233851, now seen corresponding path program 1 times [2021-11-25 20:01:37,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:37,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726819233] [2021-11-25 20:01:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:37,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:01:37,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726819233] [2021-11-25 20:01:37,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726819233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:37,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:37,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:01:37,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899578884] [2021-11-25 20:01:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:37,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:01:37,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:01:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:01:37,835 INFO L87 Difference]: Start difference. First operand 3087 states and 4340 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 20:01:42,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:46,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:47,524 INFO L93 Difference]: Finished difference Result 3107 states and 4360 transitions. [2021-11-25 20:01:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:01:47,525 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, (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 78 [2021-11-25 20:01:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:47,540 INFO L225 Difference]: With dead ends: 3107 [2021-11-25 20:01:47,540 INFO L226 Difference]: Without dead ends: 3105 [2021-11-25 20:01:47,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:01:47,543 INFO L933 BasicCegarLoop]: 2904 mSDtfsCounter, 2731 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 6640 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:47,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2739 Valid, 6640 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 802 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 20:01:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2021-11-25 20:01:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 3085. [2021-11-25 20:01:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 1861 states have (on average 1.3014508328855454) internal successors, (2422), 1963 states have internal predecessors, (2422), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:01:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4338 transitions. [2021-11-25 20:01:47,770 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4338 transitions. Word has length 78 [2021-11-25 20:01:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:47,771 INFO L470 AbstractCegarLoop]: Abstraction has 3085 states and 4338 transitions. [2021-11-25 20:01:47,771 INFO L471 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 20:01:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4338 transitions. [2021-11-25 20:01:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-25 20:01:47,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:47,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:47,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:01:47,774 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash 575964128, now seen corresponding path program 1 times [2021-11-25 20:01:47,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:47,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972883807] [2021-11-25 20:01:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:47,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:01:47,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:47,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972883807] [2021-11-25 20:01:47,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972883807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:47,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:47,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:01:47,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326927591] [2021-11-25 20:01:47,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:47,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:01:47,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:01:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:01:47,983 INFO L87 Difference]: Start difference. First operand 3085 states and 4338 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:01:52,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:55,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:01:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:01:57,166 INFO L93 Difference]: Finished difference Result 3105 states and 4358 transitions. [2021-11-25 20:01:57,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:01:57,168 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, (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 83 [2021-11-25 20:01:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:01:57,182 INFO L225 Difference]: With dead ends: 3105 [2021-11-25 20:01:57,183 INFO L226 Difference]: Without dead ends: 3103 [2021-11-25 20:01:57,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:01:57,185 INFO L933 BasicCegarLoop]: 2902 mSDtfsCounter, 2732 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 6632 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:01:57,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 6632 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 802 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:01:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2021-11-25 20:01:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 3083. [2021-11-25 20:01:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 1860 states have (on average 1.3010752688172043) internal successors, (2420), 1961 states have internal predecessors, (2420), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:01:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4336 transitions. [2021-11-25 20:01:57,433 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4336 transitions. Word has length 83 [2021-11-25 20:01:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:01:57,436 INFO L470 AbstractCegarLoop]: Abstraction has 3083 states and 4336 transitions. [2021-11-25 20:01:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:01:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4336 transitions. [2021-11-25 20:01:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:01:57,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:01:57,440 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:01:57,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:01:57,440 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:01:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:01:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -549098493, now seen corresponding path program 1 times [2021-11-25 20:01:57,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:01:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697205539] [2021-11-25 20:01:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:57,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:01:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:01:57,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:01:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697205539] [2021-11-25 20:01:57,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697205539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:01:57,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:01:57,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:01:57,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306083470] [2021-11-25 20:01:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:01:57,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:01:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:01:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:01:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:01:57,675 INFO L87 Difference]: Start difference. First operand 3083 states and 4336 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:02:01,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:04,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:09,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:10,605 INFO L93 Difference]: Finished difference Result 3099 states and 4352 transitions. [2021-11-25 20:02:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:10,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 [2021-11-25 20:02:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:10,621 INFO L225 Difference]: With dead ends: 3099 [2021-11-25 20:02:10,622 INFO L226 Difference]: Without dead ends: 3097 [2021-11-25 20:02:10,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:10,625 INFO L933 BasicCegarLoop]: 3149 mSDtfsCounter, 2549 mSDsluCounter, 4726 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 7338 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:10,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 7338 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-25 20:02:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-11-25 20:02:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3081. [2021-11-25 20:02:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 1859 states have (on average 1.3006993006993006) internal successors, (2418), 1959 states have internal predecessors, (2418), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4334 transitions. [2021-11-25 20:02:10,954 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4334 transitions. Word has length 85 [2021-11-25 20:02:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:10,955 INFO L470 AbstractCegarLoop]: Abstraction has 3081 states and 4334 transitions. [2021-11-25 20:02:10,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:02:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4334 transitions. [2021-11-25 20:02:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-25 20:02:10,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:10,959 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:10,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:02:10,959 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1918700949, now seen corresponding path program 1 times [2021-11-25 20:02:10,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:10,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402369723] [2021-11-25 20:02:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:10,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:02:11,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:11,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402369723] [2021-11-25 20:02:11,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402369723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:11,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:11,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:11,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565644679] [2021-11-25 20:02:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:11,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:11,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:11,166 INFO L87 Difference]: Start difference. First operand 3081 states and 4334 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:02:13,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:16,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:19,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:21,436 INFO L93 Difference]: Finished difference Result 3101 states and 4354 transitions. [2021-11-25 20:02:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 [2021-11-25 20:02:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:21,457 INFO L225 Difference]: With dead ends: 3101 [2021-11-25 20:02:21,457 INFO L226 Difference]: Without dead ends: 3099 [2021-11-25 20:02:21,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:21,461 INFO L933 BasicCegarLoop]: 2898 mSDtfsCounter, 2723 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:21,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 6628 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 802 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 20:02:21,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2021-11-25 20:02:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3079. [2021-11-25 20:02:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 1858 states have (on average 1.3003229278794401) internal successors, (2416), 1957 states have internal predecessors, (2416), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 4332 transitions. [2021-11-25 20:02:21,787 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 4332 transitions. Word has length 90 [2021-11-25 20:02:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:21,788 INFO L470 AbstractCegarLoop]: Abstraction has 3079 states and 4332 transitions. [2021-11-25 20:02:21,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:02:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 4332 transitions. [2021-11-25 20:02:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 20:02:21,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:21,792 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:21,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:02:21,793 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1606280939, now seen corresponding path program 1 times [2021-11-25 20:02:21,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:21,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673044588] [2021-11-25 20:02:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:21,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:02:22,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673044588] [2021-11-25 20:02:22,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673044588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:22,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:22,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:22,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902856459] [2021-11-25 20:02:22,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:22,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:22,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:22,008 INFO L87 Difference]: Start difference. First operand 3079 states and 4332 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:02:26,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:28,544 INFO L93 Difference]: Finished difference Result 3094 states and 4353 transitions. [2021-11-25 20:02:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 [2021-11-25 20:02:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:28,561 INFO L225 Difference]: With dead ends: 3094 [2021-11-25 20:02:28,561 INFO L226 Difference]: Without dead ends: 3092 [2021-11-25 20:02:28,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:28,565 INFO L933 BasicCegarLoop]: 2459 mSDtfsCounter, 2747 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:28,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2752 Valid, 4934 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 654 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 20:02:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2021-11-25 20:02:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3077. [2021-11-25 20:02:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 1857 states have (on average 1.2999461497038234) internal successors, (2414), 1955 states have internal predecessors, (2414), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4330 transitions. [2021-11-25 20:02:28,887 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4330 transitions. Word has length 95 [2021-11-25 20:02:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:28,887 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 4330 transitions. [2021-11-25 20:02:28,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:02:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4330 transitions. [2021-11-25 20:02:28,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:02:28,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:28,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:28,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:02:28,892 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2001368014, now seen corresponding path program 1 times [2021-11-25 20:02:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:28,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162786866] [2021-11-25 20:02:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:28,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:02:29,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:29,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162786866] [2021-11-25 20:02:29,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162786866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:29,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:29,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:29,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25478754] [2021-11-25 20:02:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:29,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:29,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:29,111 INFO L87 Difference]: Start difference. First operand 3077 states and 4330 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 20:02:33,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:35,487 INFO L93 Difference]: Finished difference Result 3092 states and 4351 transitions. [2021-11-25 20:02:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 [2021-11-25 20:02:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:35,502 INFO L225 Difference]: With dead ends: 3092 [2021-11-25 20:02:35,503 INFO L226 Difference]: Without dead ends: 3090 [2021-11-25 20:02:35,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:35,506 INFO L933 BasicCegarLoop]: 2458 mSDtfsCounter, 2744 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:35,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 4932 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 20:02:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-25 20:02:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3075. [2021-11-25 20:02:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 1856 states have (on average 1.2995689655172413) internal successors, (2412), 1953 states have internal predecessors, (2412), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4328 transitions. [2021-11-25 20:02:35,763 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4328 transitions. Word has length 100 [2021-11-25 20:02:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:35,764 INFO L470 AbstractCegarLoop]: Abstraction has 3075 states and 4328 transitions. [2021-11-25 20:02:35,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 20:02:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4328 transitions. [2021-11-25 20:02:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-25 20:02:35,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:35,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:35,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:02:35,769 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1252065671, now seen corresponding path program 1 times [2021-11-25 20:02:35,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:35,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601675424] [2021-11-25 20:02:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:35,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:02:36,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:36,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601675424] [2021-11-25 20:02:36,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601675424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:36,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:36,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:36,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190968910] [2021-11-25 20:02:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:36,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:36,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:36,029 INFO L87 Difference]: Start difference. First operand 3075 states and 4328 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:02:38,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:42,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:43,785 INFO L93 Difference]: Finished difference Result 3085 states and 4333 transitions. [2021-11-25 20:02:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:43,787 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, (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 [2021-11-25 20:02:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:43,802 INFO L225 Difference]: With dead ends: 3085 [2021-11-25 20:02:43,802 INFO L226 Difference]: Without dead ends: 3083 [2021-11-25 20:02:43,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:43,804 INFO L933 BasicCegarLoop]: 2890 mSDtfsCounter, 2723 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 6612 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:43,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 6612 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 20:02:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2021-11-25 20:02:44,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3073. [2021-11-25 20:02:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 1855 states have (on average 1.2991913746630728) internal successors, (2410), 1951 states have internal predecessors, (2410), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4326 transitions. [2021-11-25 20:02:44,055 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4326 transitions. Word has length 105 [2021-11-25 20:02:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:44,056 INFO L470 AbstractCegarLoop]: Abstraction has 3073 states and 4326 transitions. [2021-11-25 20:02:44,056 INFO L471 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:02:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4326 transitions. [2021-11-25 20:02:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 20:02:44,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:44,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:44,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:02:44,061 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1767937066, now seen corresponding path program 1 times [2021-11-25 20:02:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109905299] [2021-11-25 20:02:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:44,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:02:44,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109905299] [2021-11-25 20:02:44,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109905299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:44,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:44,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:02:44,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114019225] [2021-11-25 20:02:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:44,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:02:44,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:02:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:02:44,282 INFO L87 Difference]: Start difference. First operand 3073 states and 4326 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:02:49,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:51,834 INFO L93 Difference]: Finished difference Result 3083 states and 4331 transitions. [2021-11-25 20:02:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:02:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 [2021-11-25 20:02:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:51,847 INFO L225 Difference]: With dead ends: 3083 [2021-11-25 20:02:51,848 INFO L226 Difference]: Without dead ends: 3081 [2021-11-25 20:02:51,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:51,851 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 2720 mSDsluCounter, 4170 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 6608 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:51,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2725 Valid, 6608 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-25 20:02:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2021-11-25 20:02:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3071. [2021-11-25 20:02:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1854 states have (on average 1.2988133764832794) internal successors, (2408), 1949 states have internal predecessors, (2408), 959 states have call successors, (959), 244 states have call predecessors, (959), 243 states have return successors, (957), 929 states have call predecessors, (957), 957 states have call successors, (957) [2021-11-25 20:02:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4324 transitions. [2021-11-25 20:02:52,106 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4324 transitions. Word has length 110 [2021-11-25 20:02:52,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:52,108 INFO L470 AbstractCegarLoop]: Abstraction has 3071 states and 4324 transitions. [2021-11-25 20:02:52,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:02:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4324 transitions. [2021-11-25 20:02:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 20:02:52,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:52,113 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:52,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:02:52,114 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:02:52,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:52,114 INFO L85 PathProgramCache]: Analyzing trace with hash 942188787, now seen corresponding path program 1 times [2021-11-25 20:02:52,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:52,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918180082] [2021-11-25 20:02:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:52,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-25 20:02:52,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:52,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918180082] [2021-11-25 20:02:52,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918180082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:52,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:52,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:02:52,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595921113] [2021-11-25 20:02:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:52,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:02:52,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:02:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:52,476 INFO L87 Difference]: Start difference. First operand 3071 states and 4324 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:02:53,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:58,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:02,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:05,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:08,240 INFO L93 Difference]: Finished difference Result 4137 states and 5778 transitions. [2021-11-25 20:03:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:03:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 139 [2021-11-25 20:03:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:08,260 INFO L225 Difference]: With dead ends: 4137 [2021-11-25 20:03:08,261 INFO L226 Difference]: Without dead ends: 4135 [2021-11-25 20:03:08,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:03:08,265 INFO L933 BasicCegarLoop]: 3029 mSDtfsCounter, 2712 mSDsluCounter, 8061 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 10224 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:08,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 10224 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1230 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2021-11-25 20:03:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-11-25 20:03:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4098. [2021-11-25 20:03:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 2468 states have (on average 1.2820097244732578) internal successors, (3164), 2581 states have internal predecessors, (3164), 1266 states have call successors, (1266), 356 states have call predecessors, (1266), 349 states have return successors, (1313), 1222 states have call predecessors, (1313), 1264 states have call successors, (1313) [2021-11-25 20:03:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5743 transitions. [2021-11-25 20:03:08,608 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5743 transitions. Word has length 139 [2021-11-25 20:03:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:08,608 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 5743 transitions. [2021-11-25 20:03:08,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:03:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5743 transitions. [2021-11-25 20:03:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:03:08,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:08,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:08,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:03:08,614 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:03:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:08,614 INFO L85 PathProgramCache]: Analyzing trace with hash -181401304, now seen corresponding path program 1 times [2021-11-25 20:03:08,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340898836] [2021-11-25 20:03:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:08,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:03:08,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340898836] [2021-11-25 20:03:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340898836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:08,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:08,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:03:08,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114642458] [2021-11-25 20:03:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:08,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:03:08,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:03:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:08,890 INFO L87 Difference]: Start difference. First operand 4098 states and 5743 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:03:11,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:13,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:16,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:18,220 INFO L93 Difference]: Finished difference Result 4118 states and 5762 transitions. [2021-11-25 20:03:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:03:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 [2021-11-25 20:03:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:18,241 INFO L225 Difference]: With dead ends: 4118 [2021-11-25 20:03:18,242 INFO L226 Difference]: Without dead ends: 4116 [2021-11-25 20:03:18,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:18,245 INFO L933 BasicCegarLoop]: 2890 mSDtfsCounter, 2708 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 6612 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:18,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 6612 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 802 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 20:03:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-11-25 20:03:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 4101. [2021-11-25 20:03:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 2471 states have (on average 1.2812626467017403) internal successors, (3166), 2584 states have internal predecessors, (3166), 1266 states have call successors, (1266), 356 states have call predecessors, (1266), 350 states have return successors, (1314), 1222 states have call predecessors, (1314), 1264 states have call successors, (1314) [2021-11-25 20:03:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5746 transitions. [2021-11-25 20:03:18,620 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5746 transitions. Word has length 115 [2021-11-25 20:03:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:18,621 INFO L470 AbstractCegarLoop]: Abstraction has 4101 states and 5746 transitions. [2021-11-25 20:03:18,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:03:18,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5746 transitions. [2021-11-25 20:03:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 20:03:18,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:18,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:18,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:03:18,626 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:03:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 974798736, now seen corresponding path program 1 times [2021-11-25 20:03:18,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:18,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126455817] [2021-11-25 20:03:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:18,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:03:18,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126455817] [2021-11-25 20:03:18,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126455817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:18,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:18,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:03:18,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191819946] [2021-11-25 20:03:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:03:18,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:03:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:18,817 INFO L87 Difference]: Start difference. First operand 4101 states and 5746 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:23,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:26,209 INFO L93 Difference]: Finished difference Result 4111 states and 5751 transitions. [2021-11-25 20:03:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:03:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 [2021-11-25 20:03:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:26,239 INFO L225 Difference]: With dead ends: 4111 [2021-11-25 20:03:26,240 INFO L226 Difference]: Without dead ends: 4109 [2021-11-25 20:03:26,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:26,243 INFO L933 BasicCegarLoop]: 2886 mSDtfsCounter, 2714 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:26,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2719 Valid, 6604 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 20:03:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-25 20:03:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4099. [2021-11-25 20:03:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 2470 states have (on average 1.2805668016194331) internal successors, (3163), 2582 states have internal predecessors, (3163), 1266 states have call successors, (1266), 356 states have call predecessors, (1266), 350 states have return successors, (1314), 1222 states have call predecessors, (1314), 1264 states have call successors, (1314) [2021-11-25 20:03:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5743 transitions. [2021-11-25 20:03:26,648 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5743 transitions. Word has length 120 [2021-11-25 20:03:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:26,648 INFO L470 AbstractCegarLoop]: Abstraction has 4099 states and 5743 transitions. [2021-11-25 20:03:26,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5743 transitions. [2021-11-25 20:03:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 20:03:26,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:26,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:26,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:03:26,654 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:03:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1283158659, now seen corresponding path program 1 times [2021-11-25 20:03:26,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:26,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251369895] [2021-11-25 20:03:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:26,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:03:26,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:26,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251369895] [2021-11-25 20:03:26,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251369895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:26,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:26,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:03:26,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33985193] [2021-11-25 20:03:26,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:26,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:03:26,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:03:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:26,844 INFO L87 Difference]: Start difference. First operand 4099 states and 5743 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:03:28,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:32,098 INFO L93 Difference]: Finished difference Result 4099 states and 5743 transitions. [2021-11-25 20:03:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:03:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 [2021-11-25 20:03:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:32,111 INFO L225 Difference]: With dead ends: 4099 [2021-11-25 20:03:32,111 INFO L226 Difference]: Without dead ends: 4097 [2021-11-25 20:03:32,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:32,114 INFO L933 BasicCegarLoop]: 2444 mSDtfsCounter, 2738 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:32,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 4888 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-25 20:03:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2021-11-25 20:03:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 4097. [2021-11-25 20:03:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 2469 states have (on average 1.279870392871608) internal successors, (3160), 2580 states have internal predecessors, (3160), 1266 states have call successors, (1266), 356 states have call predecessors, (1266), 350 states have return successors, (1314), 1222 states have call predecessors, (1314), 1264 states have call successors, (1314) [2021-11-25 20:03:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5740 transitions. [2021-11-25 20:03:32,409 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5740 transitions. Word has length 125 [2021-11-25 20:03:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:32,410 INFO L470 AbstractCegarLoop]: Abstraction has 4097 states and 5740 transitions. [2021-11-25 20:03:32,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:03:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5740 transitions. [2021-11-25 20:03:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:03:32,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:32,415 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 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] [2021-11-25 20:03:32,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:03:32,415 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:03:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2112444567, now seen corresponding path program 1 times [2021-11-25 20:03:32,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:32,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393937453] [2021-11-25 20:03:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:32,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:32,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:03:32,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43761055] [2021-11-25 20:03:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:32,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:03:32,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:03:32,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:03:32,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:03:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:34,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 4155 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-25 20:03:34,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:03:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-25 20:03:34,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:03:34,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393937453] [2021-11-25 20:03:34,462 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:03:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43761055] [2021-11-25 20:03:34,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43761055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:34,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:34,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:03:34,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512559666] [2021-11-25 20:03:34,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:34,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:03:34,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:34,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:03:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:03:34,465 INFO L87 Difference]: Start difference. First operand 4097 states and 5740 transitions. Second operand has 11 states, 8 states have (on average 7.625) internal successors, (61), 10 states have internal predecessors, (61), 6 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 20:03:36,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:46,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:52,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:56,081 INFO L93 Difference]: Finished difference Result 8055 states and 11272 transitions. [2021-11-25 20:03:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:03:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 10 states have internal predecessors, (61), 6 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 153 [2021-11-25 20:03:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:56,097 INFO L225 Difference]: With dead ends: 8055 [2021-11-25 20:03:56,097 INFO L226 Difference]: Without dead ends: 4130 [2021-11-25 20:03:56,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:03:56,120 INFO L933 BasicCegarLoop]: 2448 mSDtfsCounter, 22 mSDsluCounter, 24755 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 97 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 24331 SdHoareTripleChecker+Invalid, 3590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:56,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 24331 Invalid, 3590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3491 Invalid, 2 Unknown, 0 Unchecked, 21.2s Time] [2021-11-25 20:03:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-11-25 20:03:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4106. [2021-11-25 20:03:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 2474 states have (on average 1.2793047696038804) internal successors, (3165), 2585 states have internal predecessors, (3165), 1270 states have call successors, (1270), 356 states have call predecessors, (1270), 350 states have return successors, (1318), 1226 states have call predecessors, (1318), 1268 states have call successors, (1318) [2021-11-25 20:03:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 5753 transitions. [2021-11-25 20:03:56,508 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 5753 transitions. Word has length 153 [2021-11-25 20:03:56,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:56,509 INFO L470 AbstractCegarLoop]: Abstraction has 4106 states and 5753 transitions. [2021-11-25 20:03:56,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 10 states have internal predecessors, (61), 6 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 20:03:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 5753 transitions. [2021-11-25 20:03:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 20:03:56,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:56,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:56,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:03:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-25 20:03:56,739 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:03:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 23844601, now seen corresponding path program 1 times [2021-11-25 20:03:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752498410] [2021-11-25 20:03:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:56,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:03:56,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752498410] [2021-11-25 20:03:56,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752498410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:56,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:56,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:03:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424910785] [2021-11-25 20:03:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:56,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:03:56,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:03:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:03:56,942 INFO L87 Difference]: Start difference. First operand 4106 states and 5753 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:03:58,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:01,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:04,265 INFO L93 Difference]: Finished difference Result 4116 states and 5767 transitions. [2021-11-25 20:04:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:04:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 [2021-11-25 20:04:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:04,276 INFO L225 Difference]: With dead ends: 4116 [2021-11-25 20:04:04,276 INFO L226 Difference]: Without dead ends: 4114 [2021-11-25 20:04:04,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:04,280 INFO L933 BasicCegarLoop]: 2446 mSDtfsCounter, 2726 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:04,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 4908 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 20:04:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-11-25 20:04:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4104. [2021-11-25 20:04:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 2473 states have (on average 1.2786089769510716) internal successors, (3162), 2583 states have internal predecessors, (3162), 1270 states have call successors, (1270), 356 states have call predecessors, (1270), 350 states have return successors, (1318), 1226 states have call predecessors, (1318), 1268 states have call successors, (1318) [2021-11-25 20:04:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5750 transitions. [2021-11-25 20:04:04,659 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5750 transitions. Word has length 130 [2021-11-25 20:04:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:04,659 INFO L470 AbstractCegarLoop]: Abstraction has 4104 states and 5750 transitions. [2021-11-25 20:04:04,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:04:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5750 transitions. [2021-11-25 20:04:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:04:04,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:04,664 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:04,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 20:04:04,664 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:04:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1612927354, now seen corresponding path program 1 times [2021-11-25 20:04:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:04,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379239053] [2021-11-25 20:04:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:04,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:04:04,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:04,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379239053] [2021-11-25 20:04:04,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379239053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:04,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:04,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:04,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892555104] [2021-11-25 20:04:04,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:04,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:04,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:04,912 INFO L87 Difference]: Start difference. First operand 4104 states and 5750 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:04:10,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:12,711 INFO L93 Difference]: Finished difference Result 4114 states and 5755 transitions. [2021-11-25 20:04:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:04:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 [2021-11-25 20:04:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:12,728 INFO L225 Difference]: With dead ends: 4114 [2021-11-25 20:04:12,728 INFO L226 Difference]: Without dead ends: 4112 [2021-11-25 20:04:12,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:12,731 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 2705 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 6592 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:12,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 6592 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 803 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 20:04:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-11-25 20:04:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4102. [2021-11-25 20:04:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 2472 states have (on average 1.2779126213592233) internal successors, (3159), 2581 states have internal predecessors, (3159), 1270 states have call successors, (1270), 356 states have call predecessors, (1270), 350 states have return successors, (1318), 1226 states have call predecessors, (1318), 1268 states have call successors, (1318) [2021-11-25 20:04:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5747 transitions. [2021-11-25 20:04:13,145 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5747 transitions. Word has length 135 [2021-11-25 20:04:13,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:13,145 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 5747 transitions. [2021-11-25 20:04:13,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:04:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5747 transitions. [2021-11-25 20:04:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 20:04:13,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:13,150 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:13,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 20:04:13,151 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:04:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1756447825, now seen corresponding path program 1 times [2021-11-25 20:04:13,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:13,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416559834] [2021-11-25 20:04:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:13,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:13,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:04:13,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876072500] [2021-11-25 20:04:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:13,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:04:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:04:13,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:04:13,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:04:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:14,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 4231 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 20:04:14,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-25 20:04:14,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:14,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416559834] [2021-11-25 20:04:14,951 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:04:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876072500] [2021-11-25 20:04:14,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876072500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:14,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:14,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:04:14,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357706413] [2021-11-25 20:04:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:14,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:04:14,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:04:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:04:14,953 INFO L87 Difference]: Start difference. First operand 4102 states and 5747 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:04:20,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:25,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:27,330 INFO L93 Difference]: Finished difference Result 9104 states and 13011 transitions. [2021-11-25 20:04:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:04:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 165 [2021-11-25 20:04:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:27,349 INFO L225 Difference]: With dead ends: 9104 [2021-11-25 20:04:27,349 INFO L226 Difference]: Without dead ends: 5148 [2021-11-25 20:04:27,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:04:27,369 INFO L933 BasicCegarLoop]: 2810 mSDtfsCounter, 1067 mSDsluCounter, 15199 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 554 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 16330 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:27,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 16330 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2210 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 20:04:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2021-11-25 20:04:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 4104. [2021-11-25 20:04:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 2474 states have (on average 1.2776879547291835) internal successors, (3161), 2583 states have internal predecessors, (3161), 1270 states have call successors, (1270), 356 states have call predecessors, (1270), 350 states have return successors, (1318), 1226 states have call predecessors, (1318), 1268 states have call successors, (1318) [2021-11-25 20:04:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5749 transitions. [2021-11-25 20:04:27,778 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5749 transitions. Word has length 165 [2021-11-25 20:04:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:27,778 INFO L470 AbstractCegarLoop]: Abstraction has 4104 states and 5749 transitions. [2021-11-25 20:04:27,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:04:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5749 transitions. [2021-11-25 20:04:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 20:04:27,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:27,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:27,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:28,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-25 20:04:28,007 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:04:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1556785936, now seen corresponding path program 1 times [2021-11-25 20:04:28,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775681417] [2021-11-25 20:04:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:28,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:04:28,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:28,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775681417] [2021-11-25 20:04:28,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775681417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:28,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:28,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:28,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823455475] [2021-11-25 20:04:28,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:28,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:28,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:28,213 INFO L87 Difference]: Start difference. First operand 4104 states and 5749 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:04:31,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:35,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:36,148 INFO L93 Difference]: Finished difference Result 4114 states and 5763 transitions. [2021-11-25 20:04:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:04:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 140 [2021-11-25 20:04:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:36,157 INFO L225 Difference]: With dead ends: 4114 [2021-11-25 20:04:36,157 INFO L226 Difference]: Without dead ends: 4112 [2021-11-25 20:04:36,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:36,159 INFO L933 BasicCegarLoop]: 2442 mSDtfsCounter, 2720 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:36,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2725 Valid, 4900 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 651 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-25 20:04:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-11-25 20:04:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4102. [2021-11-25 20:04:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 2473 states have (on average 1.276991508289527) internal successors, (3158), 2581 states have internal predecessors, (3158), 1270 states have call successors, (1270), 356 states have call predecessors, (1270), 350 states have return successors, (1318), 1226 states have call predecessors, (1318), 1268 states have call successors, (1318) [2021-11-25 20:04:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 5746 transitions. [2021-11-25 20:04:36,535 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 5746 transitions. Word has length 140 [2021-11-25 20:04:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 5746 transitions. [2021-11-25 20:04:36,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:04:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 5746 transitions. [2021-11-25 20:04:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 20:04:36,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:36,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:36,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:04:36,539 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:04:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 573158222, now seen corresponding path program 1 times [2021-11-25 20:04:36,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:36,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879706864] [2021-11-25 20:04:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:36,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:04:36,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879706864] [2021-11-25 20:04:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879706864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:36,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650776302] [2021-11-25 20:04:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:36,720 INFO L87 Difference]: Start difference. First operand 4102 states and 5746 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:04:38,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:41,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:43,762 INFO L93 Difference]: Finished difference Result 4112 states and 5760 transitions. [2021-11-25 20:04:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:04:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 145 [2021-11-25 20:04:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:43,772 INFO L225 Difference]: With dead ends: 4112 [2021-11-25 20:04:43,772 INFO L226 Difference]: Without dead ends: 3862 [2021-11-25 20:04:43,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:43,775 INFO L933 BasicCegarLoop]: 2441 mSDtfsCounter, 2717 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:43,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2720 Valid, 4898 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 20:04:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-11-25 20:04:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3852. [2021-11-25 20:04:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 2331 states have (on average 1.2917202917202917) internal successors, (3011), 2436 states have internal predecessors, (3011), 1203 states have call successors, (1203), 315 states have call predecessors, (1203), 310 states have return successors, (1253), 1162 states have call predecessors, (1253), 1203 states have call successors, (1253) [2021-11-25 20:04:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5467 transitions. [2021-11-25 20:04:44,107 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5467 transitions. Word has length 145 [2021-11-25 20:04:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:44,108 INFO L470 AbstractCegarLoop]: Abstraction has 3852 states and 5467 transitions. [2021-11-25 20:04:44,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:04:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5467 transitions. [2021-11-25 20:04:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-25 20:04:44,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:44,112 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:44,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:04:44,112 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:04:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1018236899, now seen corresponding path program 1 times [2021-11-25 20:04:44,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465715214] [2021-11-25 20:04:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:44,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:44,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:04:44,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515954917] [2021-11-25 20:04:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:44,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:04:44,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:04:44,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:04:44,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:04:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:45,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 4268 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 20:04:45,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-25 20:04:45,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:45,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465715214] [2021-11-25 20:04:45,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:04:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515954917] [2021-11-25 20:04:45,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515954917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:45,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:45,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:04:45,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112166259] [2021-11-25 20:04:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:45,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:04:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:04:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:04:45,940 INFO L87 Difference]: Start difference. First operand 3852 states and 5467 transitions. Second operand has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 7 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-11-25 20:04:47,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:58,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:08,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:10,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:13,626 INFO L93 Difference]: Finished difference Result 7547 states and 10710 transitions. [2021-11-25 20:05:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:05:13,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 7 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 181 [2021-11-25 20:05:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:13,635 INFO L225 Difference]: With dead ends: 7547 [2021-11-25 20:05:13,636 INFO L226 Difference]: Without dead ends: 3842 [2021-11-25 20:05:13,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:05:13,646 INFO L933 BasicCegarLoop]: 2294 mSDtfsCounter, 17 mSDsluCounter, 25865 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25180 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:13,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 25180 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3575 Invalid, 3 Unknown, 0 Unchecked, 27.2s Time] [2021-11-25 20:05:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-11-25 20:05:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3842. [2021-11-25 20:05:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3842 states, 2325 states have (on average 1.2916129032258064) internal successors, (3003), 2430 states have internal predecessors, (3003), 1200 states have call successors, (1200), 314 states have call predecessors, (1200), 309 states have return successors, (1250), 1159 states have call predecessors, (1250), 1200 states have call successors, (1250) [2021-11-25 20:05:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5453 transitions. [2021-11-25 20:05:13,910 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5453 transitions. Word has length 181 [2021-11-25 20:05:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:13,910 INFO L470 AbstractCegarLoop]: Abstraction has 3842 states and 5453 transitions. [2021-11-25 20:05:13,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.666666666666666) internal successors, (78), 11 states have internal predecessors, (78), 7 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-11-25 20:05:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5453 transitions. [2021-11-25 20:05:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-25 20:05:13,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:13,915 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:13,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:14,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:14,143 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-25 20:05:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1732631312, now seen corresponding path program 1 times [2021-11-25 20:05:14,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:14,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142057542] [2021-11-25 20:05:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:14,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:14,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:05:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575385903] [2021-11-25 20:05:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:14,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:14,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:14,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:14,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a98b0-41d9-4cb4-9f01-84a9c8a96e50/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:05:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:16,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 4366 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 20:05:16,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-25 20:05:16,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-25 20:05:17,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:17,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142057542] [2021-11-25 20:05:17,598 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:05:17,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575385903] [2021-11-25 20:05:17,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575385903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025348063] [2021-11-25 20:05:17,630 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2021-11-25 20:05:17,631 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:05:17,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:05:17,641 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:05:17,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:06:34,861 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 3796 for LOIs [2021-11-25 20:07:27,012 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 3790 for LOIs [2021-11-25 20:07:31,598 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assume with input of size 3790 for LOIs [2021-11-25 20:07:40,653 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:09:19,857 WARN L227 SmtUtils]: Spent 1.64m on a formula simplification that was a NOOP. DAG size: 3785 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:11:12,709 WARN L227 SmtUtils]: Spent 1.86m on a formula simplification that was a NOOP. DAG size: 3790 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)