./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/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_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:27:36,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:27:36,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:27:36,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:27:36,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:27:36,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:27:36,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:27:36,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:27:36,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:27:36,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:27:36,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:27:36,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:27:36,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:27:36,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:27:36,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:27:36,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:27:36,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:27:36,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:27:36,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:27:36,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:27:36,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:27:36,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:27:36,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:27:36,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:27:36,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:27:36,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:27:36,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:27:36,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:27:36,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:27:36,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:27:36,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:27:36,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:27:36,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:27:36,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:27:36,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:27:36,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:27:36,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:27:36,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:27:36,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:27:36,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:27:36,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:27:36,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:27:36,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:27:36,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:27:36,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:27:36,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:27:36,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:27:36,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:27:36,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:27:36,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:27:36,503 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:27:36,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:27:36,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:27:36,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:27:36,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:27:36,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:27:36,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:27:36,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:27:36,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:27:36,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:27:36,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:27:36,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:27:36,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:27:36,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:27:36,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:27:36,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:27:36,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:27:36,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:27:36,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:27:36,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:27:36,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:27:36,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:36,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:27:36,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:27:36,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:27:36,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:27:36,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:27:36,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:27:36,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:27:36,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:27:36,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 [2022-11-23 14:27:36,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:27:36,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:27:36,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:27:36,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:27:36,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:27:36,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-23 14:27:40,019 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:27:40,857 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:27:40,858 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-23 14:27:40,935 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/data/390e5eef8/27c7442168a143889bce8cde5dcab249/FLAG14db6d107 [2022-11-23 14:27:40,951 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/data/390e5eef8/27c7442168a143889bce8cde5dcab249 [2022-11-23 14:27:40,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:27:40,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:27:40,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:40,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:27:40,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:27:40,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:40" (1/1) ... [2022-11-23 14:27:40,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345b1942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:40, skipping insertion in model container [2022-11-23 14:27:40,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:27:40" (1/1) ... [2022-11-23 14:27:40,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:27:41,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:27:47,590 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-23 14:27:48,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:48,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:27:49,074 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-23 14:27:49,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:27:49,376 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:27:49,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49 WrapperNode [2022-11-23 14:27:49,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:27:49,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:49,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:27:49,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:27:49,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:49,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:50,811 INFO L138 Inliner]: procedures = 644, calls = 13559, calls flagged for inlining = 231, calls inlined = 205, statements flattened = 26796 [2022-11-23 14:27:50,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:27:50,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:27:50,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:27:50,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:27:50,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:50,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:27:51,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:27:51,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:27:51,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:27:51,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (1/1) ... [2022-11-23 14:27:51,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:27:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:27:51,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:27:51,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02fdd96-7a8e-4553-a77e-1d096120b6e4/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:27:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_init [2022-11-23 14:27:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_init [2022-11-23 14:27:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_ec_hdr [2022-11-23 14:27:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_ec_hdr [2022-11-23 14:27:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_unmap_leb [2022-11-23 14:27:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_unmap_leb [2022-11-23 14:27:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 14:27:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-23 14:27:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-23 14:27:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2022-11-23 14:27:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2022-11-23 14:27:52,005 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_resize_volume [2022-11-23 14:27:52,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_resize_volume [2022-11-23 14:27:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_internal_volumes [2022-11-23 14:27:52,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_internal_volumes [2022-11-23 14:27:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure __schedule_ubi_work [2022-11-23 14:27:52,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __schedule_ubi_work [2022-11-23 14:27:52,006 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_volume_notify [2022-11-23 14:27:52,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_volume_notify [2022-11-23 14:27:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:27:52,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:27:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_detach_mtd_dev [2022-11-23 14:27:52,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_detach_mtd_dev [2022-11-23 14:27:52,007 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2022-11-23 14:27:52,008 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2022-11-23 14:27:52,008 INFO L130 BoogieDeclarations]: Found specification of procedure erase_block [2022-11-23 14:27:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_block [2022-11-23 14:27:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_pending [2022-11-23 14:27:52,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_pending [2022-11-23 14:27:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-23 14:27:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-23 14:27:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-23 14:27:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-23 14:27:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2022-11-23 14:27:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2022-11-23 14:27:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_read_leb [2022-11-23 14:27:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_read_leb [2022-11-23 14:27:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_device_info [2022-11-23 14:27:52,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_device_info [2022-11-23 14:27:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_cdev_ioctl [2022-11-23 14:27:52,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_cdev_ioctl [2022-11-23 14:27:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-23 14:27:52,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-23 14:27:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 14:27:52,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 14:27:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_sysfs_close [2022-11-23 14:27:52,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_sysfs_close [2022-11-23 14:27:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure vtbl_check [2022-11-23 14:27:52,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vtbl_check [2022-11-23 14:27:52,013 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_vid_hdr [2022-11-23 14:27:52,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_vid_hdr [2022-11-23 14:27:52,013 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_cdev_ioctl [2022-11-23 14:27:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_cdev_ioctl [2022-11-23 14:27:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-23 14:27:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-23 14:27:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_compare_lebs [2022-11-23 14:27:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_compare_lebs [2022-11-23 14:27:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_fm_peb [2022-11-23 14:27:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_fm_peb [2022-11-23 14:27:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:27:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:27:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-23 14:27:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-23 14:27:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure vol_cdev_ioctl [2022-11-23 14:27:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_cdev_ioctl [2022-11-23 14:27:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_fastmap [2022-11-23 14:27:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_fastmap [2022-11-23 14:27:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure is_error_sane [2022-11-23 14:27:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure is_error_sane [2022-11-23 14:27:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_vid_hdr [2022-11-23 14:27:52,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_vid_hdr [2022-11-23 14:27:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vid_hdr [2022-11-23 14:27:52,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vid_hdr [2022-11-23 14:27:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure rb_next [2022-11-23 14:27:52,017 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_next [2022-11-23 14:27:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_volume [2022-11-23 14:27:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_volume [2022-11-23 14:27:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:27:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calc_data_len [2022-11-23 14:27:52,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calc_data_len [2022-11-23 14:27:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_data [2022-11-23 14:27:52,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_data [2022-11-23 14:27:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_close [2022-11-23 14:27:52,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_close [2022-11-23 14:27:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_vid_hdr [2022-11-23 14:27:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_vid_hdr [2022-11-23 14:27:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:27:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:27:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:27:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure rb_link_node [2022-11-23 14:27:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_link_node [2022-11-23 14:27:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_find_av [2022-11-23 14:27:52,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_find_av [2022-11-23 14:27:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:27:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:27:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-23 14:27:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-23 14:27:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:27:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:27:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_ubi_work [2022-11-23 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_ubi_work [2022-11-23 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase___0 [2022-11-23 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase___0 [2022-11-23 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_ec_hdr [2022-11-23 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_ec_hdr [2022-11-23 14:27:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:27:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_not_bad [2022-11-23 14:27:52,028 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_not_bad [2022-11-23 14:27:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:27:52,028 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:27:52,028 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_eb [2022-11-23 14:27:52,029 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_eb [2022-11-23 14:27:52,029 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:27:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:27:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calculate_reserved [2022-11-23 14:27:52,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calculate_reserved [2022-11-23 14:27:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_debugfs_exit_dev [2022-11-23 14:27:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_debugfs_exit_dev [2022-11-23 14:27:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:27:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr [2022-11-23 14:27:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr [2022-11-23 14:27:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-23 14:27:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-23 14:27:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure find_mean_wl_entry [2022-11-23 14:27:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mean_wl_entry [2022-11-23 14:27:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-23 14:27:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-23 14:27:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:27:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-23 14:27:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-23 14:27:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-23 14:27:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-23 14:27:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:27:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:27:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_data [2022-11-23 14:27:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_data [2022-11-23 14:27:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_add [2022-11-23 14:27:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_add [2022-11-23 14:27:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-23 14:27:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-23 14:27:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-23 14:27:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-23 14:27:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2022-11-23 14:27:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2022-11-23 14:27:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:27:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:27:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 14:27:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 14:27:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2022-11-23 14:27:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2022-11-23 14:27:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure new_fm_vhdr [2022-11-23 14:27:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure new_fm_vhdr [2022-11-23 14:27:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure yield [2022-11-23 14:27:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure yield [2022-11-23 14:27:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2022-11-23 14:27:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2022-11-23 14:27:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure find_wl_entry [2022-11-23 14:27:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure find_wl_entry [2022-11-23 14:27:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_io [2022-11-23 14:27:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_io [2022-11-23 14:27:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure __vmalloc [2022-11-23 14:27:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __vmalloc [2022-11-23 14:27:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_is_bad [2022-11-23 14:27:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_is_bad [2022-11-23 14:27:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure vol_id2idx [2022-11-23 14:27:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_id2idx [2022-11-23 14:27:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-23 14:27:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-23 14:27:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-23 14:27:52,045 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-23 14:27:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:27:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_reserved [2022-11-23 14:27:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_reserved [2022-11-23 14:27:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_fm_peb [2022-11-23 14:27:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_fm_peb [2022-11-23 14:27:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure in_wl_tree [2022-11-23 14:27:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure in_wl_tree [2022-11-23 14:27:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ai [2022-11-23 14:27:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ai [2022-11-23 14:27:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-23 14:27:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-23 14:27:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-23 14:27:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-23 14:27:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_peb [2022-11-23 14:27:52,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_peb [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 14:27:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_ai [2022-11-23 14:27:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_ai [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:27:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_aeb [2022-11-23 14:27:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_aeb [2022-11-23 14:27:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_av [2022-11-23 14:27:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_av [2022-11-23 14:27:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure write_leb [2022-11-23 14:27:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure write_leb [2022-11-23 14:27:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure rb_erase [2022-11-23 14:27:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_erase [2022-11-23 14:27:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-23 14:27:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-23 14:27:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_erase [2022-11-23 14:27:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_erase [2022-11-23 14:27:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_del [2022-11-23 14:27:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_del [2022-11-23 14:27:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure validate_ec_hdr [2022-11-23 14:27:52,050 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_ec_hdr [2022-11-23 14:27:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_compat [2022-11-23 14:27:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_compat [2022-11-23 14:27:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_gen [2022-11-23 14:27:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_gen [2022-11-23 14:27:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_av [2022-11-23 14:27:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_av [2022-11-23 14:27:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-23 14:27:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-23 14:27:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_device [2022-11-23 14:27:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_device [2022-11-23 14:27:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure rb_first [2022-11-23 14:27:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_first [2022-11-23 14:27:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_vid_hdr [2022-11-23 14:27:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_vid_hdr [2022-11-23 14:27:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2022-11-23 14:27:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2022-11-23 14:27:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_lock [2022-11-23 14:27:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_lock [2022-11-23 14:27:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 14:27:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 14:27:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure rb_insert_color [2022-11-23 14:27:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_insert_color [2022-11-23 14:27:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read [2022-11-23 14:27:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read [2022-11-23 14:27:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_change_vtbl_record [2022-11-23 14:27:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_change_vtbl_record [2022-11-23 14:27:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure uif_close [2022-11-23 14:27:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure uif_close [2022-11-23 14:27:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-23 14:27:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-23 14:27:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_atomic_leb_change [2022-11-23 14:27:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_atomic_leb_change [2022-11-23 14:27:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:27:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:27:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:27:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:27:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_ro_mode [2022-11-23 14:27:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_ro_mode [2022-11-23 14:27:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 14:27:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 14:27:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-23 14:27:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-23 14:27:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:27:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-23 14:27:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-23 14:27:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:27:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-23 14:27:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-23 14:27:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-23 14:27:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-23 14:27:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:27:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:27:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure scan_all [2022-11-23 14:27:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_all [2022-11-23 14:27:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_flash [2022-11-23 14:27:52,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_flash [2022-11-23 14:27:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_zalloc_vid_hdr [2022-11-23 14:27:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_zalloc_vid_hdr [2022-11-23 14:27:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_is_fm_block [2022-11-23 14:27:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_is_fm_block [2022-11-23 14:27:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_unlock [2022-11-23 14:27:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_unlock [2022-11-23 14:27:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-23 14:27:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-23 14:27:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure device_register [2022-11-23 14:27:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure device_register [2022-11-23 14:27:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_sync_erase [2022-11-23 14:27:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_sync_erase [2022-11-23 14:27:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:27:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:27:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:27:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:27:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure idx2vol_id [2022-11-23 14:27:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure idx2vol_id [2022-11-23 14:27:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-23 14:27:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-23 14:27:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_peb_ec_hdr [2022-11-23 14:27:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_peb_ec_hdr [2022-11-23 14:27:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vol_info [2022-11-23 14:27:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vol_info [2022-11-23 14:27:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:27:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:27:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure get_peb_for_wl [2022-11-23 14:27:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure get_peb_for_wl [2022-11-23 14:27:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-23 14:27:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-23 14:27:52,068 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:27:52,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:27:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure blocking_notifier_call_chain [2022-11-23 14:27:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure blocking_notifier_call_chain [2022-11-23 14:27:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure create_vtbl [2022-11-23 14:27:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure create_vtbl [2022-11-23 14:27:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2022-11-23 14:27:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2022-11-23 14:27:52,069 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:27:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:27:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2022-11-23 14:27:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2022-11-23 14:27:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:27:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure do_work [2022-11-23 14:27:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure do_work [2022-11-23 14:27:52,070 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:27:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:27:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_in_wl_tree [2022-11-23 14:27:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_in_wl_tree [2022-11-23 14:27:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_open_volume [2022-11-23 14:27:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_open_volume [2022-11-23 14:27:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_pattern [2022-11-23 14:27:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_pattern [2022-11-23 14:27:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2022-11-23 14:27:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2022-11-23 14:27:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_write_leb [2022-11-23 14:27:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_write_leb [2022-11-23 14:27:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-23 14:27:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-23 14:27:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-23 14:27:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-23 14:27:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:27:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_put_device [2022-11-23 14:27:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_put_device [2022-11-23 14:27:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure assign_aeb_to_av [2022-11-23 14:27:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assign_aeb_to_av [2022-11-23 14:27:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:27:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:27:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure clear_update_marker [2022-11-23 14:27:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_update_marker [2022-11-23 14:27:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-23 14:27:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-23 14:27:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure scan_peb [2022-11-23 14:27:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_peb [2022-11-23 14:27:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-11-23 14:27:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-11-23 14:27:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr___0 [2022-11-23 14:27:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr___0 [2022-11-23 14:27:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:27:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:27:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:27:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_self_check_all_ff [2022-11-23 14:27:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_self_check_all_ff [2022-11-23 14:27:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2022-11-23 14:27:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2022-11-23 14:27:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2022-11-23 14:27:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2022-11-23 14:27:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_close_volume [2022-11-23 14:27:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_close_volume [2022-11-23 14:27:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_peb [2022-11-23 14:27:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_peb [2022-11-23 14:27:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:27:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:27:52,076 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-23 14:27:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-23 14:27:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:27:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:27:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:27:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:27:52,077 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_wear_leveling [2022-11-23 14:27:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_wear_leveling [2022-11-23 14:27:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure leb_read_unlock [2022-11-23 14:27:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_read_unlock [2022-11-23 14:27:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_next_sqnum [2022-11-23 14:27:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_next_sqnum [2022-11-23 14:27:52,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-23 14:27:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-23 14:27:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 14:27:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 14:27:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_ec_hdr [2022-11-23 14:27:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_ec_hdr [2022-11-23 14:27:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_add_entry [2022-11-23 14:27:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_add_entry [2022-11-23 14:27:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_close [2022-11-23 14:27:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_close [2022-11-23 14:27:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure revoke_exclusive [2022-11-23 14:27:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure revoke_exclusive [2022-11-23 14:27:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure return_unused_pool_pebs [2022-11-23 14:27:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure return_unused_pool_pebs [2022-11-23 14:27:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:27:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:27:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vtbl_record [2022-11-23 14:27:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vtbl_record [2022-11-23 14:27:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure erase_worker [2022-11-23 14:27:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_worker [2022-11-23 14:27:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase [2022-11-23 14:27:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase [2022-11-23 14:27:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_add_to_av [2022-11-23 14:27:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_add_to_av [2022-11-23 14:27:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2022-11-23 14:27:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2022-11-23 14:27:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-23 14:27:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-23 14:27:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:27:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:27:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-23 14:27:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-23 14:27:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:27:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2022-11-23 14:27:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2022-11-23 14:27:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_volume [2022-11-23 14:27:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_volume [2022-11-23 14:27:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:27:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:27:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_lookup [2022-11-23 14:27:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_lookup [2022-11-23 14:27:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2022-11-23 14:27:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2022-11-23 14:27:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-23 14:27:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-23 14:27:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:27:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:27:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_flush [2022-11-23 14:27:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_flush [2022-11-23 14:27:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_list [2022-11-23 14:27:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_list [2022-11-23 14:27:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_volumes [2022-11-23 14:27:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_volumes [2022-11-23 14:27:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure kill_volumes [2022-11-23 14:27:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_volumes [2022-11-23 14:27:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_is_bgt_disabled [2022-11-23 14:27:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_is_bgt_disabled [2022-11-23 14:27:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_notify_all [2022-11-23 14:27:52,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_notify_all [2022-11-23 14:27:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-23 14:27:52,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-23 14:27:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write [2022-11-23 14:27:52,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write [2022-11-23 14:27:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure imajor [2022-11-23 14:27:52,087 INFO L138 BoogieDeclarations]: Found implementation of procedure imajor [2022-11-23 14:27:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure scan_pool [2022-11-23 14:27:52,088 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_pool [2022-11-23 14:27:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:27:52,088 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:27:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure add_aeb [2022-11-23 14:27:52,088 INFO L138 BoogieDeclarations]: Found implementation of procedure add_aeb [2022-11-23 14:27:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2022-11-23 14:27:52,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2022-11-23 14:27:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure get_exclusive [2022-11-23 14:27:52,089 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exclusive [2022-11-23 14:27:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_major2num [2022-11-23 14:27:52,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_major2num [2022-11-23 14:27:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_volume_info [2022-11-23 14:27:52,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_volume_info [2022-11-23 14:27:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-23 14:27:52,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-23 14:27:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2022-11-23 14:27:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2022-11-23 14:27:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:27:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:27:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure tree_destroy [2022-11-23 14:27:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_destroy [2022-11-23 14:27:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:27:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_ec_hdr [2022-11-23 14:27:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_ec_hdr [2022-11-23 14:27:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure find_anchor_wl_entry [2022-11-23 14:27:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure find_anchor_wl_entry [2022-11-23 14:27:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:27:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:27:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-23 14:27:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-23 14:27:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure wl_tree_add [2022-11-23 14:27:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure wl_tree_add [2022-11-23 14:27:54,403 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:27:54,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:33:36,394 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:33:40,972 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:33:40,972 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:33:40,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:40 BoogieIcfgContainer [2022-11-23 14:33:40,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:33:40,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:33:40,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:33:40,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:33:40,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:27:40" (1/3) ... [2022-11-23 14:33:40,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f77a1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:40, skipping insertion in model container [2022-11-23 14:33:40,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:27:49" (2/3) ... [2022-11-23 14:33:40,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f77a1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:40, skipping insertion in model container [2022-11-23 14:33:40,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:40" (3/3) ... [2022-11-23 14:33:40,990 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-23 14:33:41,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:33:41,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:33:41,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:33:41,204 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c6c6948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:33:41,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:33:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 6898 states, 4211 states have (on average 1.3545476133934933) internal successors, (5704), 4460 states have internal predecessors, (5704), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-11-23 14:33:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:33:41,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:41,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:41,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:33:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 595285054, now seen corresponding path program 1 times [2022-11-23 14:33:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030415741] [2022-11-23 14:33:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:33:42,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:42,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030415741] [2022-11-23 14:33:42,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030415741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:42,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:42,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:33:42,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166494092] [2022-11-23 14:33:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:33:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:33:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:42,665 INFO L87 Difference]: Start difference. First operand has 6898 states, 4211 states have (on average 1.3545476133934933) internal successors, (5704), 4460 states have internal predecessors, (5704), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:33:44,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:48,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:33:52,290 INFO L93 Difference]: Finished difference Result 16274 states and 25140 transitions. [2022-11-23 14:33:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:33:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-23 14:33:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:33:52,377 INFO L225 Difference]: With dead ends: 16274 [2022-11-23 14:33:52,377 INFO L226 Difference]: Without dead ends: 9374 [2022-11-23 14:33:52,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:52,447 INFO L413 NwaCegarLoop]: 11062 mSDtfsCounter, 10484 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10484 SdHoareTripleChecker+Valid, 14707 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:33:52,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10484 Valid, 14707 Invalid, 730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-23 14:33:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2022-11-23 14:33:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 9366. [2022-11-23 14:33:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 5677 states have (on average 1.3429628324819447) internal successors, (7624), 6029 states have internal predecessors, (7624), 3345 states have call successors, (3345), 345 states have call predecessors, (3345), 343 states have return successors, (3320), 3245 states have call predecessors, (3320), 3320 states have call successors, (3320) [2022-11-23 14:33:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 14289 transitions. [2022-11-23 14:33:53,801 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 14289 transitions. Word has length 10 [2022-11-23 14:33:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:53,802 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 14289 transitions. [2022-11-23 14:33:53,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:33:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 14289 transitions. [2022-11-23 14:33:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:33:53,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:53,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:33:53,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:33:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1269034838, now seen corresponding path program 1 times [2022-11-23 14:33:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:53,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115516658] [2022-11-23 14:33:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:53,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:33:54,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:54,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115516658] [2022-11-23 14:33:54,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115516658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:54,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:54,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:33:54,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531276306] [2022-11-23 14:33:54,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:54,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:33:54,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:33:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:54,635 INFO L87 Difference]: Start difference. First operand 9366 states and 14289 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:33:57,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:02,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:09,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:09,842 INFO L93 Difference]: Finished difference Result 18320 states and 28037 transitions. [2022-11-23 14:34:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:34:09,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 14:34:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:10,027 INFO L225 Difference]: With dead ends: 18320 [2022-11-23 14:34:10,027 INFO L226 Difference]: Without dead ends: 18316 [2022-11-23 14:34:10,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:10,048 INFO L413 NwaCegarLoop]: 12519 mSDtfsCounter, 10322 mSDsluCounter, 9944 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10324 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:10,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10324 Valid, 22463 Invalid, 1110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1104 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2022-11-23 14:34:10,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18316 states. [2022-11-23 14:34:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18316 to 18298. [2022-11-23 14:34:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18298 states, 11109 states have (on average 1.3431451975875417) internal successors, (14921), 11789 states have internal predecessors, (14921), 6512 states have call successors, (6512), 681 states have call predecessors, (6512), 676 states have return successors, (6581), 6328 states have call predecessors, (6581), 6486 states have call successors, (6581) [2022-11-23 14:34:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18298 states to 18298 states and 28014 transitions. [2022-11-23 14:34:12,046 INFO L78 Accepts]: Start accepts. Automaton has 18298 states and 28014 transitions. Word has length 11 [2022-11-23 14:34:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:34:12,046 INFO L495 AbstractCegarLoop]: Abstraction has 18298 states and 28014 transitions. [2022-11-23 14:34:12,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 18298 states and 28014 transitions. [2022-11-23 14:34:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:34:12,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:34:12,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:34:12,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:34:12,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:34:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:34:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 680446529, now seen corresponding path program 1 times [2022-11-23 14:34:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:34:12,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436804885] [2022-11-23 14:34:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:34:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:34:12,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:34:12,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436804885] [2022-11-23 14:34:12,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436804885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:34:12,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:34:12,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:34:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551787728] [2022-11-23 14:34:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:34:12,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:34:12,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:34:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:34:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:12,801 INFO L87 Difference]: Start difference. First operand 18298 states and 28014 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:15,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:19,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:25,251 INFO L93 Difference]: Finished difference Result 28458 states and 43554 transitions. [2022-11-23 14:34:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:34:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 14:34:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:25,574 INFO L225 Difference]: With dead ends: 28458 [2022-11-23 14:34:25,574 INFO L226 Difference]: Without dead ends: 28454 [2022-11-23 14:34:25,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:25,595 INFO L413 NwaCegarLoop]: 12508 mSDtfsCounter, 10498 mSDsluCounter, 7599 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10502 SdHoareTripleChecker+Valid, 20107 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:25,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10502 Valid, 20107 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1018 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-11-23 14:34:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28454 states. [2022-11-23 14:34:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28454 to 28438. [2022-11-23 14:34:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28438 states, 17290 states have (on average 1.3442452284557547) internal successors, (23242), 18312 states have internal predecessors, (23242), 10087 states have call successors, (10087), 1065 states have call predecessors, (10087), 1060 states have return successors, (10201), 9827 states have call predecessors, (10201), 10063 states have call successors, (10201) [2022-11-23 14:34:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28438 states to 28438 states and 43530 transitions. [2022-11-23 14:34:27,993 INFO L78 Accepts]: Start accepts. Automaton has 28438 states and 43530 transitions. Word has length 12 [2022-11-23 14:34:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:34:27,994 INFO L495 AbstractCegarLoop]: Abstraction has 28438 states and 43530 transitions. [2022-11-23 14:34:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 28438 states and 43530 transitions. [2022-11-23 14:34:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:34:27,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:34:27,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:34:27,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:34:27,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:34:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:34:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash -385916999, now seen corresponding path program 1 times [2022-11-23 14:34:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:34:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093789233] [2022-11-23 14:34:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:34:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:34:28,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:34:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093789233] [2022-11-23 14:34:28,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093789233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:34:28,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:34:28,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:34:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980921283] [2022-11-23 14:34:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:34:28,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:34:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:34:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:34:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:28,671 INFO L87 Difference]: Start difference. First operand 28438 states and 43530 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:32,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:35,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:42,230 INFO L93 Difference]: Finished difference Result 47553 states and 72626 transitions. [2022-11-23 14:34:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:34:42,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-23 14:34:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:42,514 INFO L225 Difference]: With dead ends: 47553 [2022-11-23 14:34:42,514 INFO L226 Difference]: Without dead ends: 47549 [2022-11-23 14:34:42,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:42,553 INFO L413 NwaCegarLoop]: 12701 mSDtfsCounter, 10139 mSDsluCounter, 9938 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10139 SdHoareTripleChecker+Valid, 22639 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:42,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10139 Valid, 22639 Invalid, 1129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-11-23 14:34:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47549 states. [2022-11-23 14:34:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47549 to 47529. [2022-11-23 14:34:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47529 states, 28892 states have (on average 1.3436937560570401) internal successors, (38822), 30644 states have internal predecessors, (38822), 16777 states have call successors, (16777), 1873 states have call predecessors, (16777), 1859 states have return successors, (17002), 16327 states have call predecessors, (17002), 16751 states have call successors, (17002) [2022-11-23 14:34:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47529 states to 47529 states and 72601 transitions. [2022-11-23 14:34:46,426 INFO L78 Accepts]: Start accepts. Automaton has 47529 states and 72601 transitions. Word has length 13 [2022-11-23 14:34:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:34:46,426 INFO L495 AbstractCegarLoop]: Abstraction has 47529 states and 72601 transitions. [2022-11-23 14:34:46,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47529 states and 72601 transitions. [2022-11-23 14:34:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:34:46,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:34:46,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:34:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:34:46,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:34:46,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:34:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash 916556868, now seen corresponding path program 1 times [2022-11-23 14:34:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:34:46,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501138742] [2022-11-23 14:34:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:46,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:34:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:34:47,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:34:47,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501138742] [2022-11-23 14:34:47,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501138742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:34:47,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:34:47,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:34:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866367538] [2022-11-23 14:34:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:34:47,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:34:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:34:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:34:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:47,122 INFO L87 Difference]: Start difference. First operand 47529 states and 72601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:34:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:56,902 INFO L93 Difference]: Finished difference Result 61443 states and 92918 transitions. [2022-11-23 14:34:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:34:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-23 14:34:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:57,273 INFO L225 Difference]: With dead ends: 61443 [2022-11-23 14:34:57,273 INFO L226 Difference]: Without dead ends: 61439 [2022-11-23 14:34:57,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:57,314 INFO L413 NwaCegarLoop]: 10914 mSDtfsCounter, 8942 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8942 SdHoareTripleChecker+Valid, 15109 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8942 Valid, 15109 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:34:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61439 states. [2022-11-23 14:35:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61439 to 61433. [2022-11-23 14:35:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61433 states, 37170 states have (on average 1.3375302663438258) internal successors, (49716), 39539 states have internal predecessors, (49716), 21469 states have call successors, (21469), 2810 states have call predecessors, (21469), 2793 states have return successors, (21714), 20832 states have call predecessors, (21714), 21445 states have call successors, (21714) [2022-11-23 14:35:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61433 states to 61433 states and 92899 transitions. [2022-11-23 14:35:01,603 INFO L78 Accepts]: Start accepts. Automaton has 61433 states and 92899 transitions. Word has length 14 [2022-11-23 14:35:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:35:01,603 INFO L495 AbstractCegarLoop]: Abstraction has 61433 states and 92899 transitions. [2022-11-23 14:35:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 61433 states and 92899 transitions. [2022-11-23 14:35:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:35:01,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:35:01,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:35:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:35:01,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:35:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:35:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1656421348, now seen corresponding path program 1 times [2022-11-23 14:35:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:35:01,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800263682] [2022-11-23 14:35:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:35:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:35:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:35:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:35:02,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:35:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800263682] [2022-11-23 14:35:02,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800263682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:35:02,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:35:02,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:35:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115268579] [2022-11-23 14:35:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:35:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:35:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:35:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:35:02,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:02,646 INFO L87 Difference]: Start difference. First operand 61433 states and 92899 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:05,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:35:09,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:35:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:35:13,826 INFO L93 Difference]: Finished difference Result 70662 states and 106600 transitions. [2022-11-23 14:35:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:35:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-23 14:35:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:35:14,239 INFO L225 Difference]: With dead ends: 70662 [2022-11-23 14:35:14,239 INFO L226 Difference]: Without dead ends: 70658 [2022-11-23 14:35:14,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:14,277 INFO L413 NwaCegarLoop]: 11725 mSDtfsCounter, 10520 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10520 SdHoareTripleChecker+Valid, 15128 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:35:14,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10520 Valid, 15128 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 14:35:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70658 states. [2022-11-23 14:35:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70658 to 70651. [2022-11-23 14:35:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70651 states, 42638 states have (on average 1.3337633097237207) internal successors, (56869), 45397 states have internal predecessors, (56869), 24723 states have call successors, (24723), 3308 states have call predecessors, (24723), 3289 states have return successors, (24994), 23988 states have call predecessors, (24994), 24701 states have call successors, (24994) [2022-11-23 14:35:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70651 states to 70651 states and 106586 transitions. [2022-11-23 14:35:19,184 INFO L78 Accepts]: Start accepts. Automaton has 70651 states and 106586 transitions. Word has length 15 [2022-11-23 14:35:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:35:19,184 INFO L495 AbstractCegarLoop]: Abstraction has 70651 states and 106586 transitions. [2022-11-23 14:35:19,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 70651 states and 106586 transitions. [2022-11-23 14:35:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:35:19,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:35:19,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:35:19,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:35:19,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:35:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:35:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 185637447, now seen corresponding path program 1 times [2022-11-23 14:35:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:35:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195772969] [2022-11-23 14:35:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:35:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:35:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:35:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:35:20,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:35:20,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195772969] [2022-11-23 14:35:20,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195772969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:35:20,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:35:20,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:35:20,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213758166] [2022-11-23 14:35:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:35:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:35:20,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:35:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:35:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:20,191 INFO L87 Difference]: Start difference. First operand 70651 states and 106586 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:29,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:35:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:35:30,736 INFO L93 Difference]: Finished difference Result 70701 states and 106659 transitions. [2022-11-23 14:35:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:35:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 14:35:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:35:31,075 INFO L225 Difference]: With dead ends: 70701 [2022-11-23 14:35:31,075 INFO L226 Difference]: Without dead ends: 70698 [2022-11-23 14:35:31,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:31,113 INFO L413 NwaCegarLoop]: 10021 mSDtfsCounter, 10552 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10558 SdHoareTripleChecker+Valid, 10029 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:35:31,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10558 Valid, 10029 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:35:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70698 states. [2022-11-23 14:35:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70698 to 70686. [2022-11-23 14:35:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70686 states, 42656 states have (on average 1.333599024756189) internal successors, (56886), 45414 states have internal predecessors, (56886), 24728 states have call successors, (24728), 3320 states have call predecessors, (24728), 3301 states have return successors, (25000), 23994 states have call predecessors, (25000), 24707 states have call successors, (25000) [2022-11-23 14:35:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70686 states to 70686 states and 106614 transitions. [2022-11-23 14:35:35,902 INFO L78 Accepts]: Start accepts. Automaton has 70686 states and 106614 transitions. Word has length 16 [2022-11-23 14:35:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:35:35,903 INFO L495 AbstractCegarLoop]: Abstraction has 70686 states and 106614 transitions. [2022-11-23 14:35:35,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 70686 states and 106614 transitions. [2022-11-23 14:35:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:35:35,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:35:35,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:35:35,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:35:35,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:35:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:35:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1454890111, now seen corresponding path program 1 times [2022-11-23 14:35:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:35:35,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019692024] [2022-11-23 14:35:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:35:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:35:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:35:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:35:36,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:35:36,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019692024] [2022-11-23 14:35:36,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019692024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:35:36,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:35:36,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:35:36,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847528191] [2022-11-23 14:35:36,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:35:36,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:35:36,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:35:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:35:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:36,564 INFO L87 Difference]: Start difference. First operand 70686 states and 106614 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:35:39,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:35:44,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []