./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS --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 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:23:04,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:23:04,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:23:04,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:23:04,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:23:04,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:23:04,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:23:04,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:23:04,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:23:04,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:23:04,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:23:04,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:23:04,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:23:04,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:23:04,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:23:04,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:23:04,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:23:04,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:23:04,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:23:04,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:23:04,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:23:04,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:23:04,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:23:04,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:23:04,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:23:04,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:23:04,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:23:04,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:23:04,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:23:04,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:23:04,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:23:04,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:23:04,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:23:04,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:23:04,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:23:04,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:23:04,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:23:04,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:23:04,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:23:04,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:23:04,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:23:04,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:23:04,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:23:04,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:23:04,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:23:04,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:23:04,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:23:04,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:23:04,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:23:04,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:23:04,582 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:23:04,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:23:04,583 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:23:04,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:23:04,584 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:23:04,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:23:04,584 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:23:04,585 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:23:04,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:23:04,585 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:23:04,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:23:04,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:23:04,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:23:04,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:23:04,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:23:04,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:23:04,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:23:04,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:23:04,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:23:04,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:23:04,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:23:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:23:04,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:23:04,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:23:04,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:23:04,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:23:04,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:23:04,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:23:04,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:23:04,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:23:04,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 [2022-11-19 07:23:04,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:23:04,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:23:04,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:23:04,985 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:23:04,985 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:23:04,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-19 07:23:05,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/data/cf2e78efc/b77e23a86b5f401f8c4f41435c6d6ba0/FLAG6f3dc5d65 [2022-11-19 07:23:06,431 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:23:06,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-19 07:23:06,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/data/cf2e78efc/b77e23a86b5f401f8c4f41435c6d6ba0/FLAG6f3dc5d65 [2022-11-19 07:23:06,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/data/cf2e78efc/b77e23a86b5f401f8c4f41435c6d6ba0 [2022-11-19 07:23:06,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:23:06,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:23:06,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:23:06,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:23:06,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:23:06,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:23:06" (1/1) ... [2022-11-19 07:23:06,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30721f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:06, skipping insertion in model container [2022-11-19 07:23:06,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:23:06" (1/1) ... [2022-11-19 07:23:06,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:23:07,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:23:13,784 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-19 07:23:14,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:14,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:23:15,282 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-19 07:23:15,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:15,591 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:23:15,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15 WrapperNode [2022-11-19 07:23:15,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:23:15,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:15,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:23:15,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:23:15,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:15,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:16,670 INFO L138 Inliner]: procedures = 644, calls = 13565, calls flagged for inlining = 231, calls inlined = 205, statements flattened = 26799 [2022-11-19 07:23:16,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:16,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:23:16,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:23:16,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:23:16,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:16,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:16,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:16,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:17,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:17,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:17,997 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:18,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:18,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:23:18,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:23:18,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:23:18,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:23:18,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (1/1) ... [2022-11-19 07:23:18,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:23:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:18,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:23:18,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f56a1b2f-c2bd-4c8d-94e5-c16018674415/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:23:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_init [2022-11-19 07:23:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_init [2022-11-19 07:23:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_ec_hdr [2022-11-19 07:23:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_ec_hdr [2022-11-19 07:23:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_unmap_leb [2022-11-19 07:23:18,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_unmap_leb [2022-11-19 07:23:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-19 07:23:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-19 07:23:18,308 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-19 07:23:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2022-11-19 07:23:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2022-11-19 07:23:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_resize_volume [2022-11-19 07:23:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_resize_volume [2022-11-19 07:23:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_internal_volumes [2022-11-19 07:23:18,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_internal_volumes [2022-11-19 07:23:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure __schedule_ubi_work [2022-11-19 07:23:18,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __schedule_ubi_work [2022-11-19 07:23:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_volume_notify [2022-11-19 07:23:18,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_volume_notify [2022-11-19 07:23:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:23:18,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:23:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_detach_mtd_dev [2022-11-19 07:23:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_detach_mtd_dev [2022-11-19 07:23:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2022-11-19 07:23:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2022-11-19 07:23:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure erase_block [2022-11-19 07:23:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_block [2022-11-19 07:23:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_pending [2022-11-19 07:23:18,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_pending [2022-11-19 07:23:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-19 07:23:18,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-19 07:23:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-19 07:23:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-19 07:23:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2022-11-19 07:23:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2022-11-19 07:23:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_read_leb [2022-11-19 07:23:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_read_leb [2022-11-19 07:23:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_device_info [2022-11-19 07:23:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_device_info [2022-11-19 07:23:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_cdev_ioctl [2022-11-19 07:23:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_cdev_ioctl [2022-11-19 07:23:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-19 07:23:18,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-19 07:23:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-19 07:23:18,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-19 07:23:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_sysfs_close [2022-11-19 07:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_sysfs_close [2022-11-19 07:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure vtbl_check [2022-11-19 07:23:18,316 INFO L138 BoogieDeclarations]: Found implementation of procedure vtbl_check [2022-11-19 07:23:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_vid_hdr [2022-11-19 07:23:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_vid_hdr [2022-11-19 07:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_cdev_ioctl [2022-11-19 07:23:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_cdev_ioctl [2022-11-19 07:23:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-19 07:23:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-19 07:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_compare_lebs [2022-11-19 07:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_compare_lebs [2022-11-19 07:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_fm_peb [2022-11-19 07:23:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_fm_peb [2022-11-19 07:23:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-19 07:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-19 07:23:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure vol_cdev_ioctl [2022-11-19 07:23:18,319 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_cdev_ioctl [2022-11-19 07:23:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_fastmap [2022-11-19 07:23:18,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_fastmap [2022-11-19 07:23:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure is_error_sane [2022-11-19 07:23:18,320 INFO L138 BoogieDeclarations]: Found implementation of procedure is_error_sane [2022-11-19 07:23:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_vid_hdr [2022-11-19 07:23:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_vid_hdr [2022-11-19 07:23:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vid_hdr [2022-11-19 07:23:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vid_hdr [2022-11-19 07:23:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure rb_next [2022-11-19 07:23:18,321 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_next [2022-11-19 07:23:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_volume [2022-11-19 07:23:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_volume [2022-11-19 07:23:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:23:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calc_data_len [2022-11-19 07:23:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calc_data_len [2022-11-19 07:23:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_data [2022-11-19 07:23:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_data [2022-11-19 07:23:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_close [2022-11-19 07:23:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_close [2022-11-19 07:23:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_vid_hdr [2022-11-19 07:23:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_vid_hdr [2022-11-19 07:23:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:23:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 07:23:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 07:23:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure rb_link_node [2022-11-19 07:23:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_link_node [2022-11-19 07:23:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_find_av [2022-11-19 07:23:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_find_av [2022-11-19 07:23:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 07:23:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 07:23:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 07:23:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 07:23:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:23:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:23:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_ubi_work [2022-11-19 07:23:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_ubi_work [2022-11-19 07:23:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase___0 [2022-11-19 07:23:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase___0 [2022-11-19 07:23:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:23:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:23:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-19 07:23:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-19 07:23:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_ec_hdr [2022-11-19 07:23:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_ec_hdr [2022-11-19 07:23:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:23:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_not_bad [2022-11-19 07:23:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_not_bad [2022-11-19 07:23:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 07:23:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 07:23:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_eb [2022-11-19 07:23:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_eb [2022-11-19 07:23:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:23:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:23:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calculate_reserved [2022-11-19 07:23:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calculate_reserved [2022-11-19 07:23:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_debugfs_exit_dev [2022-11-19 07:23:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_debugfs_exit_dev [2022-11-19 07:23:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:23:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr [2022-11-19 07:23:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr [2022-11-19 07:23:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-19 07:23:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-19 07:23:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure find_mean_wl_entry [2022-11-19 07:23:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mean_wl_entry [2022-11-19 07:23:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-19 07:23:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-19 07:23:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:23:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-19 07:23:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-19 07:23:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 07:23:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 07:23:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:23:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:23:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_data [2022-11-19 07:23:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_data [2022-11-19 07:23:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_add [2022-11-19 07:23:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_add [2022-11-19 07:23:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-19 07:23:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-19 07:23:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-19 07:23:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-19 07:23:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2022-11-19 07:23:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2022-11-19 07:23:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:23:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:23:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 07:23:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 07:23:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2022-11-19 07:23:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2022-11-19 07:23:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure new_fm_vhdr [2022-11-19 07:23:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure new_fm_vhdr [2022-11-19 07:23:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure yield [2022-11-19 07:23:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure yield [2022-11-19 07:23:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2022-11-19 07:23:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2022-11-19 07:23:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure find_wl_entry [2022-11-19 07:23:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure find_wl_entry [2022-11-19 07:23:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_io [2022-11-19 07:23:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_io [2022-11-19 07:23:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure __vmalloc [2022-11-19 07:23:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __vmalloc [2022-11-19 07:23:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_is_bad [2022-11-19 07:23:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_is_bad [2022-11-19 07:23:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure vol_id2idx [2022-11-19 07:23:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_id2idx [2022-11-19 07:23:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-19 07:23:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-19 07:23:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-19 07:23:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-19 07:23:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:23:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_reserved [2022-11-19 07:23:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_reserved [2022-11-19 07:23:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_fm_peb [2022-11-19 07:23:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_fm_peb [2022-11-19 07:23:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure in_wl_tree [2022-11-19 07:23:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure in_wl_tree [2022-11-19 07:23:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ai [2022-11-19 07:23:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ai [2022-11-19 07:23:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-19 07:23:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-19 07:23:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-19 07:23:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-19 07:23:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_peb [2022-11-19 07:23:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_peb [2022-11-19 07:23:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 07:23:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 07:23:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:23:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_ai [2022-11-19 07:23:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_ai [2022-11-19 07:23:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:23:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:23:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_aeb [2022-11-19 07:23:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_aeb [2022-11-19 07:23:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_av [2022-11-19 07:23:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_av [2022-11-19 07:23:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure write_leb [2022-11-19 07:23:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure write_leb [2022-11-19 07:23:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure rb_erase [2022-11-19 07:23:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_erase [2022-11-19 07:23:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-19 07:23:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-19 07:23:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_erase [2022-11-19 07:23:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_erase [2022-11-19 07:23:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_del [2022-11-19 07:23:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_del [2022-11-19 07:23:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure validate_ec_hdr [2022-11-19 07:23:18,348 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_ec_hdr [2022-11-19 07:23:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_compat [2022-11-19 07:23:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_compat [2022-11-19 07:23:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_gen [2022-11-19 07:23:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_gen [2022-11-19 07:23:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_av [2022-11-19 07:23:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_av [2022-11-19 07:23:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-19 07:23:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-19 07:23:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_device [2022-11-19 07:23:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_device [2022-11-19 07:23:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure rb_first [2022-11-19 07:23:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_first [2022-11-19 07:23:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_vid_hdr [2022-11-19 07:23:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_vid_hdr [2022-11-19 07:23:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2022-11-19 07:23:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2022-11-19 07:23:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_lock [2022-11-19 07:23:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_lock [2022-11-19 07:23:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 07:23:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 07:23:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure rb_insert_color [2022-11-19 07:23:18,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_insert_color [2022-11-19 07:23:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read [2022-11-19 07:23:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read [2022-11-19 07:23:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_change_vtbl_record [2022-11-19 07:23:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_change_vtbl_record [2022-11-19 07:23:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure uif_close [2022-11-19 07:23:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure uif_close [2022-11-19 07:23:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-19 07:23:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-19 07:23:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_atomic_leb_change [2022-11-19 07:23:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_atomic_leb_change [2022-11-19 07:23:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:23:18,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:23:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:23:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:23:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_ro_mode [2022-11-19 07:23:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_ro_mode [2022-11-19 07:23:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:23:18,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:23:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-19 07:23:18,356 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-19 07:23:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:23:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-19 07:23:18,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-19 07:23:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:23:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-19 07:23:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-19 07:23:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-19 07:23:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-19 07:23:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 07:23:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 07:23:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure scan_all [2022-11-19 07:23:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_all [2022-11-19 07:23:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_flash [2022-11-19 07:23:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_flash [2022-11-19 07:23:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_zalloc_vid_hdr [2022-11-19 07:23:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_zalloc_vid_hdr [2022-11-19 07:23:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_is_fm_block [2022-11-19 07:23:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_is_fm_block [2022-11-19 07:23:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_unlock [2022-11-19 07:23:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_unlock [2022-11-19 07:23:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-19 07:23:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-19 07:23:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure device_register [2022-11-19 07:23:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure device_register [2022-11-19 07:23:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_sync_erase [2022-11-19 07:23:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_sync_erase [2022-11-19 07:23:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:23:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:23:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:23:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:23:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure idx2vol_id [2022-11-19 07:23:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure idx2vol_id [2022-11-19 07:23:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-19 07:23:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-19 07:23:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_peb_ec_hdr [2022-11-19 07:23:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_peb_ec_hdr [2022-11-19 07:23:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vol_info [2022-11-19 07:23:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vol_info [2022-11-19 07:23:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:23:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:23:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure get_peb_for_wl [2022-11-19 07:23:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure get_peb_for_wl [2022-11-19 07:23:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-19 07:23:18,364 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-19 07:23:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:23:18,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:23:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure blocking_notifier_call_chain [2022-11-19 07:23:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure blocking_notifier_call_chain [2022-11-19 07:23:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure create_vtbl [2022-11-19 07:23:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure create_vtbl [2022-11-19 07:23:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2022-11-19 07:23:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2022-11-19 07:23:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 07:23:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 07:23:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2022-11-19 07:23:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2022-11-19 07:23:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:23:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure do_work [2022-11-19 07:23:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure do_work [2022-11-19 07:23:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:23:18,367 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:23:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_in_wl_tree [2022-11-19 07:23:18,367 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_in_wl_tree [2022-11-19 07:23:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_open_volume [2022-11-19 07:23:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_open_volume [2022-11-19 07:23:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_pattern [2022-11-19 07:23:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_pattern [2022-11-19 07:23:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2022-11-19 07:23:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2022-11-19 07:23:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_write_leb [2022-11-19 07:23:18,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_write_leb [2022-11-19 07:23:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-19 07:23:18,369 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-19 07:23:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 07:23:18,369 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 07:23:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:23:18,370 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_put_device [2022-11-19 07:23:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_put_device [2022-11-19 07:23:18,370 INFO L130 BoogieDeclarations]: Found specification of procedure assign_aeb_to_av [2022-11-19 07:23:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assign_aeb_to_av [2022-11-19 07:23:18,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:23:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-19 07:23:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure clear_update_marker [2022-11-19 07:23:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_update_marker [2022-11-19 07:23:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-19 07:23:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-19 07:23:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure scan_peb [2022-11-19 07:23:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_peb [2022-11-19 07:23:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-11-19 07:23:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-11-19 07:23:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr___0 [2022-11-19 07:23:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr___0 [2022-11-19 07:23:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:23:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 07:23:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 07:23:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_self_check_all_ff [2022-11-19 07:23:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_self_check_all_ff [2022-11-19 07:23:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2022-11-19 07:23:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2022-11-19 07:23:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2022-11-19 07:23:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_close_volume [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_close_volume [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_peb [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_peb [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 07:23:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 07:23:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_wear_leveling [2022-11-19 07:23:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_wear_leveling [2022-11-19 07:23:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure leb_read_unlock [2022-11-19 07:23:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_read_unlock [2022-11-19 07:23:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_next_sqnum [2022-11-19 07:23:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_next_sqnum [2022-11-19 07:23:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-19 07:23:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-19 07:23:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-19 07:23:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-19 07:23:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_ec_hdr [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_ec_hdr [2022-11-19 07:23:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_add_entry [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_add_entry [2022-11-19 07:23:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_close [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_close [2022-11-19 07:23:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure revoke_exclusive [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure revoke_exclusive [2022-11-19 07:23:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure return_unused_pool_pebs [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure return_unused_pool_pebs [2022-11-19 07:23:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:23:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vtbl_record [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vtbl_record [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure erase_worker [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_worker [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_add_to_av [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_add_to_av [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2022-11-19 07:23:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-19 07:23:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:23:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 07:23:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2022-11-19 07:23:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_volume [2022-11-19 07:23:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_volume [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:23:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:23:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_lookup [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_lookup [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_flush [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_flush [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_list [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_list [2022-11-19 07:23:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_volumes [2022-11-19 07:23:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_volumes [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure kill_volumes [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_volumes [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_is_bgt_disabled [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_is_bgt_disabled [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_notify_all [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_notify_all [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write [2022-11-19 07:23:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure imajor [2022-11-19 07:23:18,509 INFO L138 BoogieDeclarations]: Found implementation of procedure imajor [2022-11-19 07:23:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure scan_pool [2022-11-19 07:23:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_pool [2022-11-19 07:23:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 07:23:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 07:23:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure add_aeb [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure add_aeb [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure get_exclusive [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exclusive [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_major2num [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_major2num [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_volume_info [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_volume_info [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-19 07:23:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2022-11-19 07:23:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure tree_destroy [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_destroy [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_ec_hdr [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_ec_hdr [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure find_anchor_wl_entry [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure find_anchor_wl_entry [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:23:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-19 07:23:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-19 07:23:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure wl_tree_add [2022-11-19 07:23:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure wl_tree_add [2022-11-19 07:23:20,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:23:20,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:29:40,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:29:44,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:29:44,948 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:29:44,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:44 BoogieIcfgContainer [2022-11-19 07:29:44,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:29:44,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:29:44,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:29:44,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:29:44,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:23:06" (1/3) ... [2022-11-19 07:29:44,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e9a792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:44, skipping insertion in model container [2022-11-19 07:29:44,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:15" (2/3) ... [2022-11-19 07:29:44,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e9a792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:44, skipping insertion in model container [2022-11-19 07:29:44,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:44" (3/3) ... [2022-11-19 07:29:44,971 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-19 07:29:45,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:29:45,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:29:45,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:29:45,179 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@582895cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:29:45,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:29:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-11-19 07:29:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:29:45,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:45,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:45,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -482885780, now seen corresponding path program 1 times [2022-11-19 07:29:45,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:45,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922895854] [2022-11-19 07:29:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:29:46,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922895854] [2022-11-19 07:29:46,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922895854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:46,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:46,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:46,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663160908] [2022-11-19 07:29:46,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:46,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:46,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:46,687 INFO L87 Difference]: Start difference. First operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:29:48,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:29:52,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:29:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:56,563 INFO L93 Difference]: Finished difference Result 16272 states and 25136 transitions. [2022-11-19 07:29:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:56,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-19 07:29:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:56,656 INFO L225 Difference]: With dead ends: 16272 [2022-11-19 07:29:56,656 INFO L226 Difference]: Without dead ends: 9373 [2022-11-19 07:29:56,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:56,731 INFO L413 NwaCegarLoop]: 11054 mSDtfsCounter, 10482 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10482 SdHoareTripleChecker+Valid, 14699 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:56,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10482 Valid, 14699 Invalid, 733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-19 07:29:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2022-11-19 07:29:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9365. [2022-11-19 07:29:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 5676 states have (on average 1.3428470754052149) internal successors, (7622), 6028 states have internal predecessors, (7622), 3345 states have call successors, (3345), 345 states have call predecessors, (3345), 343 states have return successors, (3320), 3245 states have call predecessors, (3320), 3320 states have call successors, (3320) [2022-11-19 07:29:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 14287 transitions. [2022-11-19 07:29:57,766 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 14287 transitions. Word has length 10 [2022-11-19 07:29:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:57,766 INFO L495 AbstractCegarLoop]: Abstraction has 9365 states and 14287 transitions. [2022-11-19 07:29:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:29:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 14287 transitions. [2022-11-19 07:29:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:29:57,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:57,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:29:57,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2089489386, now seen corresponding path program 1 times [2022-11-19 07:29:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:57,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275265031] [2022-11-19 07:29:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:29:58,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:58,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275265031] [2022-11-19 07:29:58,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275265031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:58,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:58,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:58,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500319275] [2022-11-19 07:29:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:58,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:58,608 INFO L87 Difference]: Start difference. First operand 9365 states and 14287 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:01,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:04,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:08,335 INFO L93 Difference]: Finished difference Result 10810 states and 16370 transitions. [2022-11-19 07:30:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-19 07:30:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:08,412 INFO L225 Difference]: With dead ends: 10810 [2022-11-19 07:30:08,412 INFO L226 Difference]: Without dead ends: 10806 [2022-11-19 07:30:08,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:08,422 INFO L413 NwaCegarLoop]: 10324 mSDtfsCounter, 10293 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10293 SdHoareTripleChecker+Valid, 11599 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:08,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10293 Valid, 11599 Invalid, 626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-19 07:30:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2022-11-19 07:30:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 10804. [2022-11-19 07:30:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 6545 states have (on average 1.3393430099312453) internal successors, (8766), 6961 states have internal predecessors, (8766), 3810 states have call successors, (3810), 450 states have call predecessors, (3810), 448 states have return successors, (3787), 3690 states have call predecessors, (3787), 3787 states have call successors, (3787) [2022-11-19 07:30:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 16363 transitions. [2022-11-19 07:30:09,284 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 16363 transitions. Word has length 11 [2022-11-19 07:30:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:09,285 INFO L495 AbstractCegarLoop]: Abstraction has 10804 states and 16363 transitions. [2022-11-19 07:30:09,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 16363 transitions. [2022-11-19 07:30:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:30:09,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:09,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:30:09,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:09,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -354588753, now seen corresponding path program 1 times [2022-11-19 07:30:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:09,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478221681] [2022-11-19 07:30:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:10,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:10,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478221681] [2022-11-19 07:30:10,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478221681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:10,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:10,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939831119] [2022-11-19 07:30:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:10,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:10,053 INFO L87 Difference]: Start difference. First operand 10804 states and 16363 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:12,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:16,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:20,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:20,857 INFO L93 Difference]: Finished difference Result 11520 states and 17379 transitions. [2022-11-19 07:30:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:30:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:20,960 INFO L225 Difference]: With dead ends: 11520 [2022-11-19 07:30:20,960 INFO L226 Difference]: Without dead ends: 11516 [2022-11-19 07:30:20,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:20,974 INFO L413 NwaCegarLoop]: 10272 mSDtfsCounter, 10540 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10546 SdHoareTripleChecker+Valid, 11239 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:20,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10546 Valid, 11239 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 619 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-19 07:30:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11516 states. [2022-11-19 07:30:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11516 to 11512. [2022-11-19 07:30:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11512 states, 6972 states have (on average 1.3383534136546185) internal successors, (9331), 7419 states have internal predecessors, (9331), 4028 states have call successors, (4028), 513 states have call predecessors, (4028), 511 states have return successors, (4007), 3905 states have call predecessors, (4007), 4007 states have call successors, (4007) [2022-11-19 07:30:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11512 states to 11512 states and 17366 transitions. [2022-11-19 07:30:22,061 INFO L78 Accepts]: Start accepts. Automaton has 11512 states and 17366 transitions. Word has length 12 [2022-11-19 07:30:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:22,061 INFO L495 AbstractCegarLoop]: Abstraction has 11512 states and 17366 transitions. [2022-11-19 07:30:22,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11512 states and 17366 transitions. [2022-11-19 07:30:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:30:22,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:22,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:22,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:30:22,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1887728185, now seen corresponding path program 1 times [2022-11-19 07:30:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:22,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124961690] [2022-11-19 07:30:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:22,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:22,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124961690] [2022-11-19 07:30:22,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124961690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:22,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:22,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311896763] [2022-11-19 07:30:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:22,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:22,965 INFO L87 Difference]: Start difference. First operand 11512 states and 17366 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:25,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:28,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:31,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:35,038 INFO L93 Difference]: Finished difference Result 15250 states and 22919 transitions. [2022-11-19 07:30:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-19 07:30:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:35,130 INFO L225 Difference]: With dead ends: 15250 [2022-11-19 07:30:35,131 INFO L226 Difference]: Without dead ends: 15246 [2022-11-19 07:30:35,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:35,145 INFO L413 NwaCegarLoop]: 11428 mSDtfsCounter, 10172 mSDsluCounter, 4689 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10172 SdHoareTripleChecker+Valid, 16117 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:35,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10172 Valid, 16117 Invalid, 808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 805 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-19 07:30:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15246 states. [2022-11-19 07:30:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15246 to 15239. [2022-11-19 07:30:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 9197 states have (on average 1.3338045014678699) internal successors, (12267), 9791 states have internal predecessors, (12267), 5330 states have call successors, (5330), 713 states have call predecessors, (5330), 711 states have return successors, (5311), 5172 states have call predecessors, (5311), 5311 states have call successors, (5311) [2022-11-19 07:30:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 22908 transitions. [2022-11-19 07:30:36,524 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 22908 transitions. Word has length 13 [2022-11-19 07:30:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:36,524 INFO L495 AbstractCegarLoop]: Abstraction has 15239 states and 22908 transitions. [2022-11-19 07:30:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:36,525 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 22908 transitions. [2022-11-19 07:30:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:30:36,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:36,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:36,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:30:36,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1614885902, now seen corresponding path program 1 times [2022-11-19 07:30:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:36,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674399735] [2022-11-19 07:30:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:37,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674399735] [2022-11-19 07:30:37,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674399735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:37,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:37,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21836705] [2022-11-19 07:30:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:37,215 INFO L87 Difference]: Start difference. First operand 15239 states and 22908 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:39,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:44,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:48,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:48,810 INFO L93 Difference]: Finished difference Result 21106 states and 31476 transitions. [2022-11-19 07:30:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:48,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-19 07:30:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:48,930 INFO L225 Difference]: With dead ends: 21106 [2022-11-19 07:30:48,930 INFO L226 Difference]: Without dead ends: 21102 [2022-11-19 07:30:48,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:48,947 INFO L413 NwaCegarLoop]: 10902 mSDtfsCounter, 8932 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8932 SdHoareTripleChecker+Valid, 15095 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:48,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8932 Valid, 15095 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-19 07:30:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21102 states. [2022-11-19 07:30:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21102 to 21097. [2022-11-19 07:30:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21097 states, 12694 states have (on average 1.3292894280762566) internal successors, (16874), 13545 states have internal predecessors, (16874), 7304 states have call successors, (7304), 1100 states have call predecessors, (7304), 1098 states have return successors, (7287), 7069 states have call predecessors, (7287), 7287 states have call successors, (7287) [2022-11-19 07:30:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21097 states to 21097 states and 31465 transitions. [2022-11-19 07:30:50,643 INFO L78 Accepts]: Start accepts. Automaton has 21097 states and 31465 transitions. Word has length 14 [2022-11-19 07:30:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:50,644 INFO L495 AbstractCegarLoop]: Abstraction has 21097 states and 31465 transitions. [2022-11-19 07:30:50,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 21097 states and 31465 transitions. [2022-11-19 07:30:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:30:50,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:50,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:30:50,647 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1473231964, now seen corresponding path program 1 times [2022-11-19 07:30:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:50,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578825025] [2022-11-19 07:30:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:51,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:51,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578825025] [2022-11-19 07:30:51,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578825025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:51,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:51,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188840860] [2022-11-19 07:30:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:51,510 INFO L87 Difference]: Start difference. First operand 21097 states and 31465 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:30:54,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:58,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:00,989 INFO L93 Difference]: Finished difference Result 24183 states and 36012 transitions. [2022-11-19 07:31:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:00,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-19 07:31:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:01,095 INFO L225 Difference]: With dead ends: 24183 [2022-11-19 07:31:01,095 INFO L226 Difference]: Without dead ends: 24179 [2022-11-19 07:31:01,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:01,105 INFO L413 NwaCegarLoop]: 11713 mSDtfsCounter, 10510 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10510 SdHoareTripleChecker+Valid, 15114 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:01,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10510 Valid, 15114 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 07:31:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24179 states. [2022-11-19 07:31:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24179 to 24173. [2022-11-19 07:31:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24173 states, 14526 states have (on average 1.3269310202395703) internal successors, (19275), 15506 states have internal predecessors, (19275), 8371 states have call successors, (8371), 1277 states have call predecessors, (8371), 1275 states have return successors, (8356), 8103 states have call predecessors, (8356), 8356 states have call successors, (8356) [2022-11-19 07:31:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24173 states to 24173 states and 36002 transitions. [2022-11-19 07:31:02,858 INFO L78 Accepts]: Start accepts. Automaton has 24173 states and 36002 transitions. Word has length 15 [2022-11-19 07:31:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:02,859 INFO L495 AbstractCegarLoop]: Abstraction has 24173 states and 36002 transitions. [2022-11-19 07:31:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 24173 states and 36002 transitions. [2022-11-19 07:31:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:31:02,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:02,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:31:02,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1579357131, now seen corresponding path program 1 times [2022-11-19 07:31:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:02,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200551754] [2022-11-19 07:31:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:03,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200551754] [2022-11-19 07:31:03,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200551754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:03,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:03,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661373948] [2022-11-19 07:31:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:03,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:03,462 INFO L87 Difference]: Start difference. First operand 24173 states and 36002 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:05,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:08,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:11,503 INFO L93 Difference]: Finished difference Result 24175 states and 36003 transitions. [2022-11-19 07:31:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-19 07:31:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:11,598 INFO L225 Difference]: With dead ends: 24175 [2022-11-19 07:31:11,598 INFO L226 Difference]: Without dead ends: 24172 [2022-11-19 07:31:11,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:11,609 INFO L413 NwaCegarLoop]: 10008 mSDtfsCounter, 10546 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10546 SdHoareTripleChecker+Valid, 10009 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:11,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10546 Valid, 10009 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 07:31:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24172 states. [2022-11-19 07:31:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24172 to 24172. [2022-11-19 07:31:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24172 states, 14526 states have (on average 1.3268621781632934) internal successors, (19274), 15505 states have internal predecessors, (19274), 8370 states have call successors, (8370), 1277 states have call predecessors, (8370), 1275 states have return successors, (8356), 8103 states have call predecessors, (8356), 8356 states have call successors, (8356) [2022-11-19 07:31:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24172 states to 24172 states and 36000 transitions. [2022-11-19 07:31:13,148 INFO L78 Accepts]: Start accepts. Automaton has 24172 states and 36000 transitions. Word has length 16 [2022-11-19 07:31:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:13,149 INFO L495 AbstractCegarLoop]: Abstraction has 24172 states and 36000 transitions. [2022-11-19 07:31:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 24172 states and 36000 transitions. [2022-11-19 07:31:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:31:13,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:13,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:31:13,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:13,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1720333697, now seen corresponding path program 1 times [2022-11-19 07:31:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011142844] [2022-11-19 07:31:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:13,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:13,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011142844] [2022-11-19 07:31:13,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011142844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:13,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:13,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238559183] [2022-11-19 07:31:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:13,765 INFO L87 Difference]: Start difference. First operand 24172 states and 36000 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:22,429 INFO L93 Difference]: Finished difference Result 35114 states and 51933 transitions. [2022-11-19 07:31:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 07:31:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:22,559 INFO L225 Difference]: With dead ends: 35114 [2022-11-19 07:31:22,559 INFO L226 Difference]: Without dead ends: 35110 [2022-11-19 07:31:22,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:22,576 INFO L413 NwaCegarLoop]: 10508 mSDtfsCounter, 9944 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9944 SdHoareTripleChecker+Valid, 12982 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:22,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9944 Valid, 12982 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-19 07:31:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35110 states. [2022-11-19 07:31:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35110 to 35107. [2022-11-19 07:31:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35107 states, 21117 states have (on average 1.3258512099256523) internal successors, (27998), 22579 states have internal predecessors, (27998), 11967 states have call successors, (11967), 2024 states have call predecessors, (11967), 2022 states have return successors, (11955), 11550 states have call predecessors, (11955), 11955 states have call successors, (11955) [2022-11-19 07:31:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35107 states to 35107 states and 51920 transitions. [2022-11-19 07:31:24,733 INFO L78 Accepts]: Start accepts. Automaton has 35107 states and 51920 transitions. Word has length 17 [2022-11-19 07:31:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:24,734 INFO L495 AbstractCegarLoop]: Abstraction has 35107 states and 51920 transitions. [2022-11-19 07:31:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 35107 states and 51920 transitions. [2022-11-19 07:31:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:31:24,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:24,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:24,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:31:24,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:24,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1795635080, now seen corresponding path program 1 times [2022-11-19 07:31:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:24,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124768233] [2022-11-19 07:31:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:25,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124768233] [2022-11-19 07:31:25,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124768233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:25,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348613437] [2022-11-19 07:31:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:25,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:25,502 INFO L87 Difference]: Start difference. First operand 35107 states and 51920 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:27,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:32,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:40,850 INFO L93 Difference]: Finished difference Result 47152 states and 69811 transitions. [2022-11-19 07:31:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:40,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-19 07:31:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:41,026 INFO L225 Difference]: With dead ends: 47152 [2022-11-19 07:31:41,027 INFO L226 Difference]: Without dead ends: 47149 [2022-11-19 07:31:41,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:41,075 INFO L413 NwaCegarLoop]: 12306 mSDtfsCounter, 10488 mSDsluCounter, 7322 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10490 SdHoareTripleChecker+Valid, 19628 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:41,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10490 Valid, 19628 Invalid, 1009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1008 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-11-19 07:31:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47149 states. [2022-11-19 07:31:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47149 to 47138. [2022-11-19 07:31:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47138 states, 28387 states have (on average 1.3271567971254448) internal successors, (37674), 30321 states have internal predecessors, (37674), 16067 states have call successors, (16067), 2685 states have call predecessors, (16067), 2683 states have return successors, (16056), 15516 states have call predecessors, (16056), 16056 states have call successors, (16056) [2022-11-19 07:31:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47138 states to 47138 states and 69797 transitions. [2022-11-19 07:31:44,666 INFO L78 Accepts]: Start accepts. Automaton has 47138 states and 69797 transitions. Word has length 18 [2022-11-19 07:31:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:44,666 INFO L495 AbstractCegarLoop]: Abstraction has 47138 states and 69797 transitions. [2022-11-19 07:31:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 47138 states and 69797 transitions. [2022-11-19 07:31:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:31:44,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:44,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:44,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:31:44,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash 164994210, now seen corresponding path program 1 times [2022-11-19 07:31:44,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:44,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407547100] [2022-11-19 07:31:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:44,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:45,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:45,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407547100] [2022-11-19 07:31:45,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407547100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:45,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:45,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594503348] [2022-11-19 07:31:45,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:45,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:45,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:45,366 INFO L87 Difference]: Start difference. First operand 47138 states and 69797 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:31:48,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:54,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:55,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:01,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:02,333 INFO L93 Difference]: Finished difference Result 56734 states and 83885 transitions. [2022-11-19 07:32:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-19 07:32:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:02,685 INFO L225 Difference]: With dead ends: 56734 [2022-11-19 07:32:02,685 INFO L226 Difference]: Without dead ends: 56719 [2022-11-19 07:32:02,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:02,706 INFO L413 NwaCegarLoop]: 11077 mSDtfsCounter, 7021 mSDsluCounter, 7584 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7022 SdHoareTripleChecker+Valid, 18661 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7022 Valid, 18661 Invalid, 983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-11-19 07:32:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56719 states. [2022-11-19 07:32:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56719 to 56708. [2022-11-19 07:32:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56708 states, 34104 states have (on average 1.3256509500351865) internal successors, (45210), 36454 states have internal predecessors, (45210), 19327 states have call successors, (19327), 3277 states have call predecessors, (19327), 3276 states have return successors, (19319), 18658 states have call predecessors, (19319), 19319 states have call successors, (19319) [2022-11-19 07:32:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56708 states to 56708 states and 83856 transitions. [2022-11-19 07:32:07,273 INFO L78 Accepts]: Start accepts. Automaton has 56708 states and 83856 transitions. Word has length 19 [2022-11-19 07:32:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:07,274 INFO L495 AbstractCegarLoop]: Abstraction has 56708 states and 83856 transitions. [2022-11-19 07:32:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:32:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 56708 states and 83856 transitions. [2022-11-19 07:32:07,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 07:32:07,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:07,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:07,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:32:07,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:32:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1833164718, now seen corresponding path program 1 times [2022-11-19 07:32:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:07,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177535187] [2022-11-19 07:32:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:08,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177535187] [2022-11-19 07:32:08,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177535187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:08,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:08,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:32:08,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517008631] [2022-11-19 07:32:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:08,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:08,270 INFO L87 Difference]: Start difference. First operand 56708 states and 83856 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:32:12,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:18,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:20,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:32:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:26,348 INFO L93 Difference]: Finished difference Result 56715 states and 83861 transitions. [2022-11-19 07:32:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:26,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-11-19 07:32:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:26,561 INFO L225 Difference]: With dead ends: 56715 [2022-11-19 07:32:26,561 INFO L226 Difference]: Without dead ends: 56712 [2022-11-19 07:32:26,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:26,583 INFO L413 NwaCegarLoop]: 12486 mSDtfsCounter, 3557 mSDsluCounter, 9949 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3557 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:26,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3557 Valid, 22435 Invalid, 1194 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1192 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2022-11-19 07:32:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56712 states.