./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/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_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:55:03,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:55:03,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:55:03,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:55:03,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:55:03,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:55:03,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:55:03,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:55:03,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:55:03,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:55:03,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:55:03,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:55:03,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:55:03,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:55:03,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:55:03,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:55:03,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:55:03,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:55:03,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:55:03,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:55:03,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:55:03,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:55:03,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:55:03,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:55:03,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:55:03,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:55:03,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:55:03,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:55:03,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:55:03,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:55:03,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:55:03,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:55:03,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:55:03,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:55:03,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:55:03,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:55:03,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:55:03,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:55:03,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:55:03,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:55:03,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:55:03,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:55:03,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:55:03,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:55:03,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:55:03,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:55:03,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:55:03,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:55:03,586 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:55:03,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:55:03,587 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:55:03,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:55:03,588 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:55:03,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:55:03,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:55:03,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:55:03,589 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:55:03,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:55:03,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:55:03,590 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:55:03,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:55:03,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:55:03,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:55:03,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:55:03,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:55:03,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:55:03,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:55:03,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:55:03,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:55:03,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:55:03,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:55:03,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:03,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:55:03,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:55:03,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:55:03,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:55:03,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:55:03,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:55:03,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:55:03,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:55:03,597 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 [2021-11-25 17:55:03,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:55:04,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:55:04,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:55:04,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:55:04,007 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:55:04,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-25 17:55:04,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/data/eba95fb9b/46aa8ab2f50e4bda92d90dffdf0e9310/FLAG7139f2da0 [2021-11-25 17:55:05,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:55:05,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-25 17:55:05,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/data/eba95fb9b/46aa8ab2f50e4bda92d90dffdf0e9310/FLAG7139f2da0 [2021-11-25 17:55:06,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/data/eba95fb9b/46aa8ab2f50e4bda92d90dffdf0e9310 [2021-11-25 17:55:06,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:55:06,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:55:06,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:06,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:55:06,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:55:06,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:06" (1/1) ... [2021-11-25 17:55:06,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3e932d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:06, skipping insertion in model container [2021-11-25 17:55:06,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:06" (1/1) ... [2021-11-25 17:55:06,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:55:06,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:55:12,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2021-11-25 17:55:13,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:13,361 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:55:14,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2021-11-25 17:55:14,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:55:14,648 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:55:14,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14 WrapperNode [2021-11-25 17:55:14,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:14,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:14,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:55:14,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:55:14,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:14,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:15,727 INFO L137 Inliner]: procedures = 644, calls = 13325, calls flagged for inlining = 231, calls inlined = 205, statements flattened = 26582 [2021-11-25 17:55:15,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:55:15,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:55:15,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:55:15,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:55:15,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:15,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:15,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:15,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:16,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:16,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:16,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:16,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:55:16,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:55:16,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:55:16,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:55:16,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (1/1) ... [2021-11-25 17:55:16,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:55:16,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:55:17,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f9e9b5-fb1d-4031-bdd8-d1d9f996e72f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:55:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_init [2021-11-25 17:55:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_init [2021-11-25 17:55:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_ec_hdr [2021-11-25 17:55:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_ec_hdr [2021-11-25 17:55:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_unmap_leb [2021-11-25 17:55:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_unmap_leb [2021-11-25 17:55:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 17:55:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-25 17:55:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-25 17:55:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2021-11-25 17:55:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2021-11-25 17:55:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_resize_volume [2021-11-25 17:55:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_resize_volume [2021-11-25 17:55:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_internal_volumes [2021-11-25 17:55:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_internal_volumes [2021-11-25 17:55:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure __schedule_ubi_work [2021-11-25 17:55:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __schedule_ubi_work [2021-11-25 17:55:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_volume_notify [2021-11-25 17:55:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_volume_notify [2021-11-25 17:55:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:55:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:55:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_detach_mtd_dev [2021-11-25 17:55:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_detach_mtd_dev [2021-11-25 17:55:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2021-11-25 17:55:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2021-11-25 17:55:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure erase_block [2021-11-25 17:55:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_block [2021-11-25 17:55:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_pending [2021-11-25 17:55:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_pending [2021-11-25 17:55:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-11-25 17:55:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-11-25 17:55:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-25 17:55:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-25 17:55:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2021-11-25 17:55:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2021-11-25 17:55:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_read_leb [2021-11-25 17:55:17,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_read_leb [2021-11-25 17:55:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_device_info [2021-11-25 17:55:17,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_device_info [2021-11-25 17:55:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_cdev_ioctl [2021-11-25 17:55:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_cdev_ioctl [2021-11-25 17:55:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2021-11-25 17:55:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2021-11-25 17:55:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-25 17:55:17,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-25 17:55:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_sysfs_close [2021-11-25 17:55:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_sysfs_close [2021-11-25 17:55:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure vtbl_check [2021-11-25 17:55:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vtbl_check [2021-11-25 17:55:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_vid_hdr [2021-11-25 17:55:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_vid_hdr [2021-11-25 17:55:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_cdev_ioctl [2021-11-25 17:55:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_cdev_ioctl [2021-11-25 17:55:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 17:55:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 17:55:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_compare_lebs [2021-11-25 17:55:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_compare_lebs [2021-11-25 17:55:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_fm_peb [2021-11-25 17:55:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_fm_peb [2021-11-25 17:55:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 17:55:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 17:55:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2021-11-25 17:55:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2021-11-25 17:55:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure vol_cdev_ioctl [2021-11-25 17:55:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_cdev_ioctl [2021-11-25 17:55:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_fastmap [2021-11-25 17:55:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_fastmap [2021-11-25 17:55:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure is_error_sane [2021-11-25 17:55:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure is_error_sane [2021-11-25 17:55:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_vid_hdr [2021-11-25 17:55:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_vid_hdr [2021-11-25 17:55:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vid_hdr [2021-11-25 17:55:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vid_hdr [2021-11-25 17:55:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure rb_next [2021-11-25 17:55:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_next [2021-11-25 17:55:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_volume [2021-11-25 17:55:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_volume [2021-11-25 17:55:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 17:55:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calc_data_len [2021-11-25 17:55:17,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calc_data_len [2021-11-25 17:55:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_data [2021-11-25 17:55:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_data [2021-11-25 17:55:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_close [2021-11-25 17:55:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_close [2021-11-25 17:55:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_vid_hdr [2021-11-25 17:55:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_vid_hdr [2021-11-25 17:55:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:55:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 17:55:17,050 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 17:55:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure rb_link_node [2021-11-25 17:55:17,051 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_link_node [2021-11-25 17:55:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_find_av [2021-11-25 17:55:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_find_av [2021-11-25 17:55:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 17:55:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 17:55:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-25 17:55:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-25 17:55:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 17:55:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 17:55:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_ubi_work [2021-11-25 17:55:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_ubi_work [2021-11-25 17:55:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase___0 [2021-11-25 17:55:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase___0 [2021-11-25 17:55:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 17:55:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 17:55:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 17:55:17,054 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 17:55:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_ec_hdr [2021-11-25 17:55:17,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_ec_hdr [2021-11-25 17:55:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:55:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_not_bad [2021-11-25 17:55:17,056 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_not_bad [2021-11-25 17:55:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 17:55:17,058 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 17:55:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_eb [2021-11-25 17:55:17,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_eb [2021-11-25 17:55:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 17:55:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 17:55:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calculate_reserved [2021-11-25 17:55:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calculate_reserved [2021-11-25 17:55:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_debugfs_exit_dev [2021-11-25 17:55:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_debugfs_exit_dev [2021-11-25 17:55:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:55:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr [2021-11-25 17:55:17,068 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr [2021-11-25 17:55:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2021-11-25 17:55:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2021-11-25 17:55:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure find_mean_wl_entry [2021-11-25 17:55:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mean_wl_entry [2021-11-25 17:55:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-25 17:55:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-25 17:55:17,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:55:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2021-11-25 17:55:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2021-11-25 17:55:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-25 17:55:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-25 17:55:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:55:17,070 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:55:17,070 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_data [2021-11-25 17:55:17,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_data [2021-11-25 17:55:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_add [2021-11-25 17:55:17,071 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_add [2021-11-25 17:55:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-25 17:55:17,071 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-25 17:55:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-11-25 17:55:17,071 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-11-25 17:55:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2021-11-25 17:55:17,072 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2021-11-25 17:55:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 17:55:17,072 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 17:55:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 17:55:17,072 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 17:55:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2021-11-25 17:55:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2021-11-25 17:55:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure new_fm_vhdr [2021-11-25 17:55:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure new_fm_vhdr [2021-11-25 17:55:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure yield [2021-11-25 17:55:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure yield [2021-11-25 17:55:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-25 17:55:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-25 17:55:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure find_wl_entry [2021-11-25 17:55:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure find_wl_entry [2021-11-25 17:55:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_io [2021-11-25 17:55:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_io [2021-11-25 17:55:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure __vmalloc [2021-11-25 17:55:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __vmalloc [2021-11-25 17:55:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_is_bad [2021-11-25 17:55:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_is_bad [2021-11-25 17:55:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure vol_id2idx [2021-11-25 17:55:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_id2idx [2021-11-25 17:55:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2021-11-25 17:55:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2021-11-25 17:55:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-25 17:55:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-25 17:55:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:55:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_reserved [2021-11-25 17:55:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_reserved [2021-11-25 17:55:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_fm_peb [2021-11-25 17:55:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_fm_peb [2021-11-25 17:55:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure in_wl_tree [2021-11-25 17:55:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure in_wl_tree [2021-11-25 17:55:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ai [2021-11-25 17:55:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ai [2021-11-25 17:55:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-25 17:55:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-25 17:55:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2021-11-25 17:55:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2021-11-25 17:55:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_peb [2021-11-25 17:55:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_peb [2021-11-25 17:55:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-25 17:55:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-25 17:55:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:55:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_ai [2021-11-25 17:55:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_ai [2021-11-25 17:55:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:55:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 17:55:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_aeb [2021-11-25 17:55:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_aeb [2021-11-25 17:55:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_av [2021-11-25 17:55:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_av [2021-11-25 17:55:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure write_leb [2021-11-25 17:55:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure write_leb [2021-11-25 17:55:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure rb_erase [2021-11-25 17:55:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_erase [2021-11-25 17:55:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-25 17:55:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-25 17:55:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_erase [2021-11-25 17:55:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_erase [2021-11-25 17:55:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_del [2021-11-25 17:55:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_del [2021-11-25 17:55:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure validate_ec_hdr [2021-11-25 17:55:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_ec_hdr [2021-11-25 17:55:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_compat [2021-11-25 17:55:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_compat [2021-11-25 17:55:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_gen [2021-11-25 17:55:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_gen [2021-11-25 17:55:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_av [2021-11-25 17:55:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_av [2021-11-25 17:55:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-25 17:55:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-25 17:55:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_device [2021-11-25 17:55:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_device [2021-11-25 17:55:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure rb_first [2021-11-25 17:55:17,082 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_first [2021-11-25 17:55:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_vid_hdr [2021-11-25 17:55:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_vid_hdr [2021-11-25 17:55:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2021-11-25 17:55:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2021-11-25 17:55:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_lock [2021-11-25 17:55:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_lock [2021-11-25 17:55:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 17:55:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 17:55:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure rb_insert_color [2021-11-25 17:55:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_insert_color [2021-11-25 17:55:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read [2021-11-25 17:55:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read [2021-11-25 17:55:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_change_vtbl_record [2021-11-25 17:55:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_change_vtbl_record [2021-11-25 17:55:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure uif_close [2021-11-25 17:55:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure uif_close [2021-11-25 17:55:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-25 17:55:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-25 17:55:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_atomic_leb_change [2021-11-25 17:55:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_atomic_leb_change [2021-11-25 17:55:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:55:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:55:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 17:55:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 17:55:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_ro_mode [2021-11-25 17:55:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_ro_mode [2021-11-25 17:55:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 17:55:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 17:55:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-11-25 17:55:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-11-25 17:55:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:55:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2021-11-25 17:55:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2021-11-25 17:55:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:55:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2021-11-25 17:55:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2021-11-25 17:55:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ubi_devices_mutex [2021-11-25 17:55:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ubi_devices_mutex [2021-11-25 17:55:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 17:55:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 17:55:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure scan_all [2021-11-25 17:55:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_all [2021-11-25 17:55:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_flash [2021-11-25 17:55:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_flash [2021-11-25 17:55:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_zalloc_vid_hdr [2021-11-25 17:55:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_zalloc_vid_hdr [2021-11-25 17:55:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_is_fm_block [2021-11-25 17:55:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_is_fm_block [2021-11-25 17:55:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_unlock [2021-11-25 17:55:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_unlock [2021-11-25 17:55:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2021-11-25 17:55:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2021-11-25 17:55:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure device_register [2021-11-25 17:55:17,096 INFO L138 BoogieDeclarations]: Found implementation of procedure device_register [2021-11-25 17:55:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_sync_erase [2021-11-25 17:55:17,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_sync_erase [2021-11-25 17:55:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 17:55:17,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 17:55:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 17:55:17,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 17:55:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure idx2vol_id [2021-11-25 17:55:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure idx2vol_id [2021-11-25 17:55:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-25 17:55:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-25 17:55:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_peb_ec_hdr [2021-11-25 17:55:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_peb_ec_hdr [2021-11-25 17:55:17,097 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vol_info [2021-11-25 17:55:17,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vol_info [2021-11-25 17:55:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:55:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:55:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure get_peb_for_wl [2021-11-25 17:55:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure get_peb_for_wl [2021-11-25 17:55:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-25 17:55:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-25 17:55:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-25 17:55:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-25 17:55:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure blocking_notifier_call_chain [2021-11-25 17:55:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure blocking_notifier_call_chain [2021-11-25 17:55:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure create_vtbl [2021-11-25 17:55:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure create_vtbl [2021-11-25 17:55:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2021-11-25 17:55:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2021-11-25 17:55:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 17:55:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 17:55:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2021-11-25 17:55:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2021-11-25 17:55:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:55:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure do_work [2021-11-25 17:55:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure do_work [2021-11-25 17:55:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 17:55:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 17:55:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_in_wl_tree [2021-11-25 17:55:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_in_wl_tree [2021-11-25 17:55:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_open_volume [2021-11-25 17:55:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_open_volume [2021-11-25 17:55:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_pattern [2021-11-25 17:55:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_pattern [2021-11-25 17:55:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2021-11-25 17:55:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2021-11-25 17:55:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_write_leb [2021-11-25 17:55:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_write_leb [2021-11-25 17:55:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-25 17:55:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-25 17:55:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-25 17:55:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-25 17:55:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:55:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_put_device [2021-11-25 17:55:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_put_device [2021-11-25 17:55:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure assign_aeb_to_av [2021-11-25 17:55:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assign_aeb_to_av [2021-11-25 17:55:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-25 17:55:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-25 17:55:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure clear_update_marker [2021-11-25 17:55:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_update_marker [2021-11-25 17:55:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-25 17:55:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-25 17:55:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure scan_peb [2021-11-25 17:55:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_peb [2021-11-25 17:55:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-25 17:55:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-25 17:55:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr___0 [2021-11-25 17:55:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr___0 [2021-11-25 17:55:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:55:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 17:55:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 17:55:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_self_check_all_ff [2021-11-25 17:55:17,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_self_check_all_ff [2021-11-25 17:55:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2021-11-25 17:55:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2021-11-25 17:55:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2021-11-25 17:55:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2021-11-25 17:55:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_close_volume [2021-11-25 17:55:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_close_volume [2021-11-25 17:55:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_peb [2021-11-25 17:55:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_peb [2021-11-25 17:55:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 17:55:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 17:55:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-25 17:55:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-25 17:55:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 17:55:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 17:55:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 17:55:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 17:55:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_wear_leveling [2021-11-25 17:55:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_wear_leveling [2021-11-25 17:55:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure leb_read_unlock [2021-11-25 17:55:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_read_unlock [2021-11-25 17:55:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_next_sqnum [2021-11-25 17:55:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_next_sqnum [2021-11-25 17:55:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ubi_devices_mutex [2021-11-25 17:55:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ubi_devices_mutex [2021-11-25 17:55:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-25 17:55:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-25 17:55:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_ec_hdr [2021-11-25 17:55:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_ec_hdr [2021-11-25 17:55:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_add_entry [2021-11-25 17:55:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_add_entry [2021-11-25 17:55:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_close [2021-11-25 17:55:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_close [2021-11-25 17:55:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure revoke_exclusive [2021-11-25 17:55:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure revoke_exclusive [2021-11-25 17:55:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure return_unused_pool_pebs [2021-11-25 17:55:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure return_unused_pool_pebs [2021-11-25 17:55:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 17:55:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 17:55:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vtbl_record [2021-11-25 17:55:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vtbl_record [2021-11-25 17:55:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure erase_worker [2021-11-25 17:55:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_worker [2021-11-25 17:55:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase [2021-11-25 17:55:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase [2021-11-25 17:55:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_add_to_av [2021-11-25 17:55:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_add_to_av [2021-11-25 17:55:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2021-11-25 17:55:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2021-11-25 17:55:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 17:55:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 17:55:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:55:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:55:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-25 17:55:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-25 17:55:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:55:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-25 17:55:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-25 17:55:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_volume [2021-11-25 17:55:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_volume [2021-11-25 17:55:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:55:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:55:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_lookup [2021-11-25 17:55:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_lookup [2021-11-25 17:55:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2021-11-25 17:55:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2021-11-25 17:55:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-25 17:55:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-25 17:55:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 17:55:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 17:55:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_flush [2021-11-25 17:55:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_flush [2021-11-25 17:55:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_list [2021-11-25 17:55:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_list [2021-11-25 17:55:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_volumes [2021-11-25 17:55:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_volumes [2021-11-25 17:55:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure kill_volumes [2021-11-25 17:55:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_volumes [2021-11-25 17:55:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_is_bgt_disabled [2021-11-25 17:55:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_is_bgt_disabled [2021-11-25 17:55:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_notify_all [2021-11-25 17:55:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_notify_all [2021-11-25 17:55:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-25 17:55:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-25 17:55:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write [2021-11-25 17:55:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write [2021-11-25 17:55:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure imajor [2021-11-25 17:55:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure imajor [2021-11-25 17:55:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure scan_pool [2021-11-25 17:55:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_pool [2021-11-25 17:55:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 17:55:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 17:55:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure add_aeb [2021-11-25 17:55:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure add_aeb [2021-11-25 17:55:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2021-11-25 17:55:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2021-11-25 17:55:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure get_exclusive [2021-11-25 17:55:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exclusive [2021-11-25 17:55:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_major2num [2021-11-25 17:55:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_major2num [2021-11-25 17:55:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_volume_info [2021-11-25 17:55:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_volume_info [2021-11-25 17:55:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2021-11-25 17:55:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2021-11-25 17:55:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2021-11-25 17:55:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2021-11-25 17:55:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 17:55:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 17:55:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure tree_destroy [2021-11-25 17:55:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_destroy [2021-11-25 17:55:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:55:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_ec_hdr [2021-11-25 17:55:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_ec_hdr [2021-11-25 17:55:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure find_anchor_wl_entry [2021-11-25 17:55:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure find_anchor_wl_entry [2021-11-25 17:55:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:55:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:55:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-25 17:55:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-25 17:55:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure wl_tree_add [2021-11-25 17:55:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure wl_tree_add [2021-11-25 17:55:19,268 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:55:19,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:01:04,347 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:01:09,178 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:01:09,178 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:01:09,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:09 BoogieIcfgContainer [2021-11-25 18:01:09,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:01:09,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:01:09,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:01:09,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:01:09,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:55:06" (1/3) ... [2021-11-25 18:01:09,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13414044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:09, skipping insertion in model container [2021-11-25 18:01:09,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:14" (2/3) ... [2021-11-25 18:01:09,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13414044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:01:09, skipping insertion in model container [2021-11-25 18:01:09,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:01:09" (3/3) ... [2021-11-25 18:01:09,201 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-25 18:01:09,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:01:09,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:01:09,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:01:09,292 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:01:09,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:01:09,447 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) [2021-11-25 18:01:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:01:09,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:09,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:09,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:01:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 936932398, now seen corresponding path program 1 times [2021-11-25 18:01:09,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:09,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396666266] [2021-11-25 18:01:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:09,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:10,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396666266] [2021-11-25 18:01:10,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396666266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:10,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:10,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:01:10,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071762428] [2021-11-25 18:01:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:10,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:10,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:10,710 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) [2021-11-25 18:01:13,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:18,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:24,912 INFO L93 Difference]: Finished difference Result 18838 states and 29173 transitions. [2021-11-25 18:01:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:01:24,916 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 [2021-11-25 18:01:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:25,088 INFO L225 Difference]: With dead ends: 18838 [2021-11-25 18:01:25,088 INFO L226 Difference]: Without dead ends: 11937 [2021-11-25 18:01:25,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:25,206 INFO L933 BasicCegarLoop]: 11937 mSDtfsCounter, 10429 mSDsluCounter, 7840 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10433 SdHoareTripleChecker+Valid, 19357 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:25,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10433 Valid, 19357 Invalid, 998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 994 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2021-11-25 18:01:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11937 states. [2021-11-25 18:01:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11937 to 11921. [2021-11-25 18:01:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11921 states, 7274 states have (on average 1.3501512235358812) internal successors, (9821), 7682 states have internal predecessors, (9821), 4231 states have call successors, (4231), 417 states have call predecessors, (4231), 415 states have return successors, (4206), 4118 states have call predecessors, (4206), 4206 states have call successors, (4206) [2021-11-25 18:01:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11921 states to 11921 states and 18258 transitions. [2021-11-25 18:01:27,055 INFO L78 Accepts]: Start accepts. Automaton has 11921 states and 18258 transitions. Word has length 10 [2021-11-25 18:01:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:27,057 INFO L470 AbstractCegarLoop]: Abstraction has 11921 states and 18258 transitions. [2021-11-25 18:01:27,059 INFO L471 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) [2021-11-25 18:01:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11921 states and 18258 transitions. [2021-11-25 18:01:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:01:27,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:27,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:27,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:01:27,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:01:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1024824668, now seen corresponding path program 1 times [2021-11-25 18:01:27,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:27,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311797251] [2021-11-25 18:01:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:27,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:27,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:27,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311797251] [2021-11-25 18:01:27,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311797251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:27,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:27,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:01:27,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207049855] [2021-11-25 18:01:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:27,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:27,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:27,821 INFO L87 Difference]: Start difference. First operand 11921 states and 18258 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) [2021-11-25 18:01:30,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:35,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:43,722 INFO L93 Difference]: Finished difference Result 23321 states and 35828 transitions. [2021-11-25 18:01:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:01:43,723 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 [2021-11-25 18:01:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:43,922 INFO L225 Difference]: With dead ends: 23321 [2021-11-25 18:01:43,922 INFO L226 Difference]: Without dead ends: 23317 [2021-11-25 18:01:43,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:43,946 INFO L933 BasicCegarLoop]: 13547 mSDtfsCounter, 10320 mSDsluCounter, 10481 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10322 SdHoareTripleChecker+Valid, 23478 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:43,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10322 Valid, 23478 Invalid, 1214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1208 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2021-11-25 18:01:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23317 states. [2021-11-25 18:01:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23317 to 23299. [2021-11-25 18:01:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23299 states, 14239 states have (on average 1.350516187934546) internal successors, (19230), 15032 states have internal predecessors, (19230), 8239 states have call successors, (8239), 825 states have call predecessors, (8239), 820 states have return successors, (8336), 8027 states have call predecessors, (8336), 8213 states have call successors, (8336) [2021-11-25 18:01:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23299 states to 23299 states and 35805 transitions. [2021-11-25 18:01:46,780 INFO L78 Accepts]: Start accepts. Automaton has 23299 states and 35805 transitions. Word has length 11 [2021-11-25 18:01:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:46,781 INFO L470 AbstractCegarLoop]: Abstraction has 23299 states and 35805 transitions. [2021-11-25 18:01:46,781 INFO L471 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) [2021-11-25 18:01:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 23299 states and 35805 transitions. [2021-11-25 18:01:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 18:01:46,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:46,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:46,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:01:46,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:01:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1709746703, now seen corresponding path program 1 times [2021-11-25 18:01:46,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:46,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601094936] [2021-11-25 18:01:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:46,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:01:47,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601094936] [2021-11-25 18:01:47,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601094936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:47,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:47,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:01:47,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355916596] [2021-11-25 18:01:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:47,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:47,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:47,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:47,411 INFO L87 Difference]: Start difference. First operand 23299 states and 35805 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) [2021-11-25 18:01:51,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:54,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:57,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:01,527 INFO L93 Difference]: Finished difference Result 38819 states and 59242 transitions. [2021-11-25 18:02:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:02:01,528 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 [2021-11-25 18:02:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:01,745 INFO L225 Difference]: With dead ends: 38819 [2021-11-25 18:02:01,746 INFO L226 Difference]: Without dead ends: 38815 [2021-11-25 18:02:01,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:01,774 INFO L933 BasicCegarLoop]: 11672 mSDtfsCounter, 9672 mSDsluCounter, 7059 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9674 SdHoareTripleChecker+Valid, 18365 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:01,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9674 Valid, 18365 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2021-11-25 18:02:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38815 states. [2021-11-25 18:02:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38815 to 38764. [2021-11-25 18:02:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38764 states, 23588 states have (on average 1.3457266406647448) internal successors, (31743), 24924 states have internal predecessors, (31743), 13640 states have call successors, (13640), 1542 states have call predecessors, (13640), 1535 states have return successors, (13793), 13296 states have call predecessors, (13793), 13616 states have call successors, (13793) [2021-11-25 18:02:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38764 states to 38764 states and 59176 transitions. [2021-11-25 18:02:04,903 INFO L78 Accepts]: Start accepts. Automaton has 38764 states and 59176 transitions. Word has length 12 [2021-11-25 18:02:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:04,904 INFO L470 AbstractCegarLoop]: Abstraction has 38764 states and 59176 transitions. [2021-11-25 18:02:04,904 INFO L471 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) [2021-11-25 18:02:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38764 states and 59176 transitions. [2021-11-25 18:02:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:02:04,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:04,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:04,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:02:04,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:02:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1467488441, now seen corresponding path program 1 times [2021-11-25 18:02:04,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:04,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49747613] [2021-11-25 18:02:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:04,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:05,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:05,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49747613] [2021-11-25 18:02:05,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49747613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:05,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:05,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:02:05,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897490815] [2021-11-25 18:02:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:05,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:02:05,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:05,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:02:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:05,647 INFO L87 Difference]: Start difference. First operand 38764 states and 59176 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) [2021-11-25 18:02:10,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:12,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:16,604 INFO L93 Difference]: Finished difference Result 44662 states and 67989 transitions. [2021-11-25 18:02:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:02:16,604 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 [2021-11-25 18:02:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:16,901 INFO L225 Difference]: With dead ends: 44662 [2021-11-25 18:02:16,901 INFO L226 Difference]: Without dead ends: 44658 [2021-11-25 18:02:16,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:16,939 INFO L933 BasicCegarLoop]: 11351 mSDtfsCounter, 10176 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10176 SdHoareTripleChecker+Valid, 16040 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:16,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10176 Valid, 16040 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 809 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 18:02:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44658 states. [2021-11-25 18:02:20,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44658 to 44650. [2021-11-25 18:02:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44650 states, 27094 states have (on average 1.342031446076622) internal successors, (36361), 28660 states have internal predecessors, (36361), 15717 states have call successors, (15717), 1846 states have call predecessors, (15717), 1838 states have return successors, (15892), 15320 states have call predecessors, (15892), 15695 states have call successors, (15892) [2021-11-25 18:02:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44650 states to 44650 states and 67970 transitions. [2021-11-25 18:02:20,728 INFO L78 Accepts]: Start accepts. Automaton has 44650 states and 67970 transitions. Word has length 13 [2021-11-25 18:02:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:20,728 INFO L470 AbstractCegarLoop]: Abstraction has 44650 states and 67970 transitions. [2021-11-25 18:02:20,729 INFO L471 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) [2021-11-25 18:02:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 44650 states and 67970 transitions. [2021-11-25 18:02:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:02:20,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:20,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:20,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:02:20,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:02:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1747555252, now seen corresponding path program 1 times [2021-11-25 18:02:20,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299475974] [2021-11-25 18:02:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:20,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:21,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:21,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299475974] [2021-11-25 18:02:21,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299475974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:21,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:21,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:02:21,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50089319] [2021-11-25 18:02:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:21,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:02:21,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:02:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:21,672 INFO L87 Difference]: Start difference. First operand 44650 states and 67970 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) [2021-11-25 18:02:24,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:28,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-25 18:02:31,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:34,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:36,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:38,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:45,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:45,915 INFO L93 Difference]: Finished difference Result 81721 states and 124315 transitions. [2021-11-25 18:02:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:02:45,916 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 [2021-11-25 18:02:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:46,438 INFO L225 Difference]: With dead ends: 81721 [2021-11-25 18:02:46,438 INFO L226 Difference]: Without dead ends: 81717 [2021-11-25 18:02:46,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:46,482 INFO L933 BasicCegarLoop]: 13515 mSDtfsCounter, 8974 mSDsluCounter, 10482 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8976 SdHoareTripleChecker+Valid, 23448 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:46,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8976 Valid, 23448 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1250 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2021-11-25 18:02:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81717 states. [2021-11-25 18:02:51,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81717 to 81691. [2021-11-25 18:02:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81691 states, 49620 states have (on average 1.344800483675937) internal successors, (66729), 52512 states have internal predecessors, (66729), 28517 states have call successors, (28517), 3588 states have call predecessors, (28517), 3553 states have return successors, (29030), 27717 states have call predecessors, (29030), 28493 states have call successors, (29030) [2021-11-25 18:02:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81691 states to 81691 states and 124276 transitions. [2021-11-25 18:02:53,222 INFO L78 Accepts]: Start accepts. Automaton has 81691 states and 124276 transitions. Word has length 14 [2021-11-25 18:02:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:53,223 INFO L470 AbstractCegarLoop]: Abstraction has 81691 states and 124276 transitions. [2021-11-25 18:02:53,223 INFO L471 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) [2021-11-25 18:02:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 81691 states and 124276 transitions. [2021-11-25 18:02:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:02:53,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:53,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:02:53,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:02:53,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:02:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1665300502, now seen corresponding path program 1 times [2021-11-25 18:02:53,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:53,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7067094] [2021-11-25 18:02:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:53,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:02:54,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7067094] [2021-11-25 18:02:54,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7067094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:54,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:54,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:02:54,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197329399] [2021-11-25 18:02:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:54,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:02:54,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:02:54,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:02:54,038 INFO L87 Difference]: Start difference. First operand 81691 states and 124276 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) [2021-11-25 18:02:59,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:04,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:05,744 INFO L93 Difference]: Finished difference Result 86397 states and 131255 transitions. [2021-11-25 18:03:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:05,745 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 [2021-11-25 18:03:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:06,238 INFO L225 Difference]: With dead ends: 86397 [2021-11-25 18:03:06,238 INFO L226 Difference]: Without dead ends: 86393 [2021-11-25 18:03:06,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:06,293 INFO L933 BasicCegarLoop]: 11787 mSDtfsCounter, 10513 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10519 SdHoareTripleChecker+Valid, 15192 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:06,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10519 Valid, 15192 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 801 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 18:03:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86393 states. [2021-11-25 18:03:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86393 to 86377. [2021-11-25 18:03:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86377 states, 52396 states have (on average 1.342678830445072) internal successors, (70351), 55482 states have internal predecessors, (70351), 30167 states have call successors, (30167), 3853 states have call predecessors, (30167), 3813 states have return successors, (30694), 29317 states have call predecessors, (30694), 30145 states have call successors, (30694) [2021-11-25 18:03:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86377 states to 86377 states and 131212 transitions. [2021-11-25 18:03:11,906 INFO L78 Accepts]: Start accepts. Automaton has 86377 states and 131212 transitions. Word has length 15 [2021-11-25 18:03:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:11,907 INFO L470 AbstractCegarLoop]: Abstraction has 86377 states and 131212 transitions. [2021-11-25 18:03:11,907 INFO L471 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) [2021-11-25 18:03:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 86377 states and 131212 transitions. [2021-11-25 18:03:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:03:11,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:11,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:11,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:03:11,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:03:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash -89641609, now seen corresponding path program 1 times [2021-11-25 18:03:11,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:11,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223396083] [2021-11-25 18:03:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:11,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:12,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:12,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223396083] [2021-11-25 18:03:12,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223396083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:12,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:12,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:03:12,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003359107] [2021-11-25 18:03:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:12,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:12,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:12,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:12,698 INFO L87 Difference]: Start difference. First operand 86377 states and 131212 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) [2021-11-25 18:03:14,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:19,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:22,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:29,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:30,651 INFO L93 Difference]: Finished difference Result 93170 states and 141226 transitions. [2021-11-25 18:03:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:30,658 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 [2021-11-25 18:03:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:30,975 INFO L225 Difference]: With dead ends: 93170 [2021-11-25 18:03:30,976 INFO L226 Difference]: Without dead ends: 93167 [2021-11-25 18:03:31,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:31,008 INFO L933 BasicCegarLoop]: 12351 mSDtfsCounter, 10504 mSDsluCounter, 7739 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10506 SdHoareTripleChecker+Valid, 19670 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:31,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10506 Valid, 19670 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1030 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2021-11-25 18:03:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93167 states. [2021-11-25 18:03:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93167 to 93133. [2021-11-25 18:03:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93133 states, 56400 states have (on average 1.3402836879432625) internal successors, (75592), 59786 states have internal predecessors, (75592), 32516 states have call successors, (32516), 4259 states have call predecessors, (32516), 4216 states have return successors, (33066), 31593 states have call predecessors, (33066), 32495 states have call successors, (33066) [2021-11-25 18:03:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93133 states to 93133 states and 141174 transitions. [2021-11-25 18:03:37,151 INFO L78 Accepts]: Start accepts. Automaton has 93133 states and 141174 transitions. Word has length 16 [2021-11-25 18:03:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:37,151 INFO L470 AbstractCegarLoop]: Abstraction has 93133 states and 141174 transitions. [2021-11-25 18:03:37,151 INFO L471 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) [2021-11-25 18:03:37,151 INFO L276 IsEmpty]: Start isEmpty. Operand 93133 states and 141174 transitions. [2021-11-25 18:03:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:03:37,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:37,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:37,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:03:37,153 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:03:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:37,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1511148685, now seen corresponding path program 1 times [2021-11-25 18:03:37,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:37,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946143414] [2021-11-25 18:03:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:37,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:03:37,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946143414] [2021-11-25 18:03:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946143414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:37,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:03:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425802594] [2021-11-25 18:03:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:37,644 INFO L87 Difference]: Start difference. First operand 93133 states and 141174 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) [2021-11-25 18:03:39,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:48,423 INFO L93 Difference]: Finished difference Result 124258 states and 186541 transitions. [2021-11-25 18:03:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:48,424 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 [2021-11-25 18:03:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:48,884 INFO L225 Difference]: With dead ends: 124258 [2021-11-25 18:03:48,885 INFO L226 Difference]: Without dead ends: 124254 [2021-11-25 18:03:48,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:48,936 INFO L933 BasicCegarLoop]: 10459 mSDtfsCounter, 9952 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9952 SdHoareTripleChecker+Valid, 12933 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:48,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9952 Valid, 12933 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 18:03:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124254 states.