./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/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_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:45:43,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:45:43,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:45:43,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:45:43,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:45:43,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:45:43,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:45:43,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:45:43,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:45:43,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:45:43,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:45:43,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:45:43,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:45:43,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:45:43,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:45:43,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:45:43,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:45:43,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:45:43,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:45:43,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:45:43,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:45:43,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:45:43,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:45:43,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:45:43,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:45:43,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:45:43,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:45:43,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:45:43,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:45:43,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:45:43,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:45:43,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:45:43,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:45:43,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:45:43,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:45:43,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:45:43,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:45:43,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:45:43,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:45:43,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:45:43,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:45:43,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 22:45:43,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:45:43,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:45:43,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:45:43,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:45:43,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:45:43,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:45:43,622 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:45:43,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:45:43,622 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:45:43,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:45:43,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:45:43,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:45:43,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:45:43,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:45:43,625 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:45:43,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:45:43,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:45:43,625 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:45:43,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:45:43,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:45:43,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:45:43,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:45:43,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:45:43,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:45:43,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:45:43,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:45:43,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:45:43,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:45:43,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:45:43,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:45:43,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:45:43,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:45:43,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:45:43,631 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:45:43,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:45:43,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:45:43,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:45:43,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:45:43,632 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 [2021-11-20 22:45:43,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:45:43,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:45:43,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:45:43,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:45:43,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:45:43,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-20 22:45:43,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/data/02f477e56/f51fbe8c2306428fae4e9df45712a8c9/FLAGfc2c9dc01 [2021-11-20 22:45:45,238 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:45:45,239 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-20 22:45:45,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/data/02f477e56/f51fbe8c2306428fae4e9df45712a8c9/FLAGfc2c9dc01 [2021-11-20 22:45:45,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/data/02f477e56/f51fbe8c2306428fae4e9df45712a8c9 [2021-11-20 22:45:45,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:45:45,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:45:45,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:45:45,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:45:45,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:45:45,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:45" (1/1) ... [2021-11-20 22:45:45,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e21d544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:45, skipping insertion in model container [2021-11-20 22:45:45,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:45:45" (1/1) ... [2021-11-20 22:45:45,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:45:45,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:45:51,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2021-11-20 22:45:52,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:45:52,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:45:53,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2021-11-20 22:45:53,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:45:53,551 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:45:53,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53 WrapperNode [2021-11-20 22:45:53,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:45:53,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:45:53,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:45:53,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:45:53,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:53,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:54,526 INFO L137 Inliner]: procedures = 644, calls = 13325, calls flagged for inlining = 231, calls inlined = 205, statements flattened = 26582 [2021-11-20 22:45:54,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:45:54,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:45:54,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:45:54,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:45:54,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:54,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:54,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:54,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:55,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:55,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:55,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:55,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:45:55,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:45:55,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:45:55,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:45:55,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (1/1) ... [2021-11-20 22:45:55,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:45:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:45:55,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:45:55,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b43e608a-8bac-4578-9070-1243b97fa181/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:45:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_init [2021-11-20 22:45:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_init [2021-11-20 22:45:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_ec_hdr [2021-11-20 22:45:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_ec_hdr [2021-11-20 22:45:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_unmap_leb [2021-11-20 22:45:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_unmap_leb [2021-11-20 22:45:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-20 22:45:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-20 22:45:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-20 22:45:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2021-11-20 22:45:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2021-11-20 22:45:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_resize_volume [2021-11-20 22:45:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_resize_volume [2021-11-20 22:45:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_internal_volumes [2021-11-20 22:45:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_internal_volumes [2021-11-20 22:45:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure __schedule_ubi_work [2021-11-20 22:45:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __schedule_ubi_work [2021-11-20 22:45:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_volume_notify [2021-11-20 22:45:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_volume_notify [2021-11-20 22:45:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 22:45:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 22:45:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_detach_mtd_dev [2021-11-20 22:45:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_detach_mtd_dev [2021-11-20 22:45:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2021-11-20 22:45:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2021-11-20 22:45:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure erase_block [2021-11-20 22:45:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_block [2021-11-20 22:45:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_pending [2021-11-20 22:45:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_pending [2021-11-20 22:45:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-11-20 22:45:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-11-20 22:45:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-20 22:45:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-20 22:45:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2021-11-20 22:45:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2021-11-20 22:45:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_read_leb [2021-11-20 22:45:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_read_leb [2021-11-20 22:45:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_device_info [2021-11-20 22:45:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_device_info [2021-11-20 22:45:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_cdev_ioctl [2021-11-20 22:45:55,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_cdev_ioctl [2021-11-20 22:45:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2021-11-20 22:45:55,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2021-11-20 22:45:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-20 22:45:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-20 22:45:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_sysfs_close [2021-11-20 22:45:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_sysfs_close [2021-11-20 22:45:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure vtbl_check [2021-11-20 22:45:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure vtbl_check [2021-11-20 22:45:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_vid_hdr [2021-11-20 22:45:55,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_vid_hdr [2021-11-20 22:45:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_cdev_ioctl [2021-11-20 22:45:55,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_cdev_ioctl [2021-11-20 22:45:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-20 22:45:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-20 22:45:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_compare_lebs [2021-11-20 22:45:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_compare_lebs [2021-11-20 22:45:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_fm_peb [2021-11-20 22:45:55,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_fm_peb [2021-11-20 22:45:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 22:45:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 22:45:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2021-11-20 22:45:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2021-11-20 22:45:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure vol_cdev_ioctl [2021-11-20 22:45:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_cdev_ioctl [2021-11-20 22:45:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_fastmap [2021-11-20 22:45:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_fastmap [2021-11-20 22:45:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure is_error_sane [2021-11-20 22:45:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure is_error_sane [2021-11-20 22:45:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_vid_hdr [2021-11-20 22:45:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_vid_hdr [2021-11-20 22:45:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vid_hdr [2021-11-20 22:45:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vid_hdr [2021-11-20 22:45:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure rb_next [2021-11-20 22:45:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_next [2021-11-20 22:45:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_volume [2021-11-20 22:45:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_volume [2021-11-20 22:45:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 22:45:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calc_data_len [2021-11-20 22:45:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calc_data_len [2021-11-20 22:45:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_data [2021-11-20 22:45:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_data [2021-11-20 22:45:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_close [2021-11-20 22:45:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_close [2021-11-20 22:45:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_vid_hdr [2021-11-20 22:45:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_vid_hdr [2021-11-20 22:45:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:45:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-20 22:45:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-20 22:45:55,966 INFO L130 BoogieDeclarations]: Found specification of procedure rb_link_node [2021-11-20 22:45:55,966 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_link_node [2021-11-20 22:45:55,966 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_find_av [2021-11-20 22:45:55,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_find_av [2021-11-20 22:45:55,967 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 22:45:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 22:45:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-20 22:45:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-20 22:45:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 22:45:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 22:45:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_ubi_work [2021-11-20 22:45:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_ubi_work [2021-11-20 22:45:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase___0 [2021-11-20 22:45:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase___0 [2021-11-20 22:45:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 22:45:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 22:45:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-20 22:45:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-20 22:45:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_ec_hdr [2021-11-20 22:45:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_ec_hdr [2021-11-20 22:45:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 22:45:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_not_bad [2021-11-20 22:45:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_not_bad [2021-11-20 22:45:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 22:45:55,974 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 22:45:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_eb [2021-11-20 22:45:55,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_eb [2021-11-20 22:45:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 22:45:55,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 22:45:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calculate_reserved [2021-11-20 22:45:55,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calculate_reserved [2021-11-20 22:45:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_debugfs_exit_dev [2021-11-20 22:45:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_debugfs_exit_dev [2021-11-20 22:45:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 22:45:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr [2021-11-20 22:45:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr [2021-11-20 22:45:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2021-11-20 22:45:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2021-11-20 22:45:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure find_mean_wl_entry [2021-11-20 22:45:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mean_wl_entry [2021-11-20 22:45:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-20 22:45:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-20 22:45:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:45:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2021-11-20 22:45:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2021-11-20 22:45:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-20 22:45:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-20 22:45:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 22:45:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 22:45:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_data [2021-11-20 22:45:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_data [2021-11-20 22:45:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_add [2021-11-20 22:45:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_add [2021-11-20 22:45:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-20 22:45:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-20 22:45:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-11-20 22:45:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-11-20 22:45:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2021-11-20 22:45:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2021-11-20 22:45:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 22:45:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 22:45:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 22:45:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 22:45:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2021-11-20 22:45:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2021-11-20 22:45:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure new_fm_vhdr [2021-11-20 22:45:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure new_fm_vhdr [2021-11-20 22:45:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure yield [2021-11-20 22:45:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure yield [2021-11-20 22:45:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-20 22:45:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-20 22:45:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure find_wl_entry [2021-11-20 22:45:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure find_wl_entry [2021-11-20 22:45:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_io [2021-11-20 22:45:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_io [2021-11-20 22:45:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure __vmalloc [2021-11-20 22:45:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __vmalloc [2021-11-20 22:45:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_is_bad [2021-11-20 22:45:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_is_bad [2021-11-20 22:45:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure vol_id2idx [2021-11-20 22:45:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_id2idx [2021-11-20 22:45:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2021-11-20 22:45:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2021-11-20 22:45:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-20 22:45:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-20 22:45:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 22:45:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_reserved [2021-11-20 22:45:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_reserved [2021-11-20 22:45:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_fm_peb [2021-11-20 22:45:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_fm_peb [2021-11-20 22:45:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure in_wl_tree [2021-11-20 22:45:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure in_wl_tree [2021-11-20 22:45:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ai [2021-11-20 22:45:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ai [2021-11-20 22:45:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-20 22:45:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-20 22:45:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2021-11-20 22:45:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2021-11-20 22:45:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_peb [2021-11-20 22:45:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_peb [2021-11-20 22:45:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-20 22:45:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-20 22:45:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:45:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_ai [2021-11-20 22:45:55,995 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_ai [2021-11-20 22:45:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 22:45:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 22:45:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_aeb [2021-11-20 22:45:55,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_aeb [2021-11-20 22:45:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_av [2021-11-20 22:45:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_av [2021-11-20 22:45:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write_leb [2021-11-20 22:45:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure write_leb [2021-11-20 22:45:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure rb_erase [2021-11-20 22:45:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_erase [2021-11-20 22:45:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-20 22:45:55,996 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-20 22:45:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_erase [2021-11-20 22:45:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_erase [2021-11-20 22:45:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_del [2021-11-20 22:45:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_del [2021-11-20 22:45:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure validate_ec_hdr [2021-11-20 22:45:55,997 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_ec_hdr [2021-11-20 22:45:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_compat [2021-11-20 22:45:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_compat [2021-11-20 22:45:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_gen [2021-11-20 22:45:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_gen [2021-11-20 22:45:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_av [2021-11-20 22:45:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_av [2021-11-20 22:45:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-20 22:45:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-20 22:45:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_device [2021-11-20 22:45:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_device [2021-11-20 22:45:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure rb_first [2021-11-20 22:45:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_first [2021-11-20 22:45:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_vid_hdr [2021-11-20 22:45:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_vid_hdr [2021-11-20 22:45:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2021-11-20 22:45:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2021-11-20 22:45:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_lock [2021-11-20 22:45:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_lock [2021-11-20 22:45:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-20 22:45:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-20 22:45:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure rb_insert_color [2021-11-20 22:45:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_insert_color [2021-11-20 22:45:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read [2021-11-20 22:45:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read [2021-11-20 22:45:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_change_vtbl_record [2021-11-20 22:45:56,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_change_vtbl_record [2021-11-20 22:45:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure uif_close [2021-11-20 22:45:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure uif_close [2021-11-20 22:45:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-20 22:45:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-20 22:45:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_atomic_leb_change [2021-11-20 22:45:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_atomic_leb_change [2021-11-20 22:45:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:45:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:45:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 22:45:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 22:45:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_ro_mode [2021-11-20 22:45:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_ro_mode [2021-11-20 22:45:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 22:45:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 22:45:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-11-20 22:45:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-11-20 22:45:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 22:45:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2021-11-20 22:45:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2021-11-20 22:45:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 22:45:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2021-11-20 22:45:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2021-11-20 22:45:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ubi_devices_mutex [2021-11-20 22:45:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ubi_devices_mutex [2021-11-20 22:45:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 22:45:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 22:45:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure scan_all [2021-11-20 22:45:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_all [2021-11-20 22:45:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_flash [2021-11-20 22:45:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_flash [2021-11-20 22:45:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_zalloc_vid_hdr [2021-11-20 22:45:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_zalloc_vid_hdr [2021-11-20 22:45:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_is_fm_block [2021-11-20 22:45:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_is_fm_block [2021-11-20 22:45:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_unlock [2021-11-20 22:45:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_unlock [2021-11-20 22:45:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2021-11-20 22:45:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2021-11-20 22:45:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure device_register [2021-11-20 22:45:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure device_register [2021-11-20 22:45:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_sync_erase [2021-11-20 22:45:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_sync_erase [2021-11-20 22:45:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 22:45:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 22:45:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 22:45:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 22:45:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure idx2vol_id [2021-11-20 22:45:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure idx2vol_id [2021-11-20 22:45:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-20 22:45:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-20 22:45:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_peb_ec_hdr [2021-11-20 22:45:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_peb_ec_hdr [2021-11-20 22:45:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vol_info [2021-11-20 22:45:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vol_info [2021-11-20 22:45:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 22:45:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 22:45:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure get_peb_for_wl [2021-11-20 22:45:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure get_peb_for_wl [2021-11-20 22:45:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-11-20 22:45:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-11-20 22:45:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 22:45:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 22:45:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure blocking_notifier_call_chain [2021-11-20 22:45:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure blocking_notifier_call_chain [2021-11-20 22:45:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure create_vtbl [2021-11-20 22:45:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure create_vtbl [2021-11-20 22:45:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2021-11-20 22:45:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2021-11-20 22:45:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 22:45:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 22:45:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2021-11-20 22:45:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2021-11-20 22:45:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:45:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure do_work [2021-11-20 22:45:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure do_work [2021-11-20 22:45:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 22:45:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 22:45:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_in_wl_tree [2021-11-20 22:45:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_in_wl_tree [2021-11-20 22:45:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_open_volume [2021-11-20 22:45:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_open_volume [2021-11-20 22:45:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_pattern [2021-11-20 22:45:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_pattern [2021-11-20 22:45:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2021-11-20 22:45:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2021-11-20 22:45:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_write_leb [2021-11-20 22:45:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_write_leb [2021-11-20 22:45:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-20 22:45:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-20 22:45:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-20 22:45:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-20 22:45:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 22:45:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_put_device [2021-11-20 22:45:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_put_device [2021-11-20 22:45:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure assign_aeb_to_av [2021-11-20 22:45:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assign_aeb_to_av [2021-11-20 22:45:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 22:45:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-20 22:45:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure clear_update_marker [2021-11-20 22:45:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_update_marker [2021-11-20 22:45:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-20 22:45:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-20 22:45:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure scan_peb [2021-11-20 22:45:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_peb [2021-11-20 22:45:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-20 22:45:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-20 22:45:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr___0 [2021-11-20 22:45:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr___0 [2021-11-20 22:45:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 22:45:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 22:45:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 22:45:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_self_check_all_ff [2021-11-20 22:45:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_self_check_all_ff [2021-11-20 22:45:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2021-11-20 22:45:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2021-11-20 22:45:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2021-11-20 22:45:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2021-11-20 22:45:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_close_volume [2021-11-20 22:45:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_close_volume [2021-11-20 22:45:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_peb [2021-11-20 22:45:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_peb [2021-11-20 22:45:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 22:45:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 22:45:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-20 22:45:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-20 22:45:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 22:45:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 22:45:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-20 22:45:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-20 22:45:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_wear_leveling [2021-11-20 22:45:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_wear_leveling [2021-11-20 22:45:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure leb_read_unlock [2021-11-20 22:45:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_read_unlock [2021-11-20 22:45:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_next_sqnum [2021-11-20 22:45:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_next_sqnum [2021-11-20 22:45:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ubi_devices_mutex [2021-11-20 22:45:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ubi_devices_mutex [2021-11-20 22:45:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 22:45:56,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 22:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_ec_hdr [2021-11-20 22:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_ec_hdr [2021-11-20 22:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_add_entry [2021-11-20 22:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_add_entry [2021-11-20 22:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_close [2021-11-20 22:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_close [2021-11-20 22:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure revoke_exclusive [2021-11-20 22:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure revoke_exclusive [2021-11-20 22:45:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure return_unused_pool_pebs [2021-11-20 22:45:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure return_unused_pool_pebs [2021-11-20 22:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 22:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 22:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vtbl_record [2021-11-20 22:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vtbl_record [2021-11-20 22:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure erase_worker [2021-11-20 22:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_worker [2021-11-20 22:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase [2021-11-20 22:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase [2021-11-20 22:45:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_add_to_av [2021-11-20 22:45:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_add_to_av [2021-11-20 22:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2021-11-20 22:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2021-11-20 22:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-20 22:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-20 22:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 22:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 22:45:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-20 22:45:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-20 22:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-20 22:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-20 22:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_volume [2021-11-20 22:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_volume [2021-11-20 22:45:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 22:45:56,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 22:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_lookup [2021-11-20 22:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_lookup [2021-11-20 22:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2021-11-20 22:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2021-11-20 22:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-20 22:45:56,132 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-20 22:45:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-20 22:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-20 22:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_flush [2021-11-20 22:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_flush [2021-11-20 22:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_list [2021-11-20 22:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_list [2021-11-20 22:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_volumes [2021-11-20 22:45:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_volumes [2021-11-20 22:45:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure kill_volumes [2021-11-20 22:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_volumes [2021-11-20 22:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_is_bgt_disabled [2021-11-20 22:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_is_bgt_disabled [2021-11-20 22:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_notify_all [2021-11-20 22:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_notify_all [2021-11-20 22:45:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-20 22:45:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-20 22:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write [2021-11-20 22:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write [2021-11-20 22:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure imajor [2021-11-20 22:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure imajor [2021-11-20 22:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure scan_pool [2021-11-20 22:45:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_pool [2021-11-20 22:45:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 22:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 22:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure add_aeb [2021-11-20 22:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure add_aeb [2021-11-20 22:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2021-11-20 22:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2021-11-20 22:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure get_exclusive [2021-11-20 22:45:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exclusive [2021-11-20 22:45:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_major2num [2021-11-20 22:45:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_major2num [2021-11-20 22:45:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_volume_info [2021-11-20 22:45:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_volume_info [2021-11-20 22:45:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2021-11-20 22:45:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2021-11-20 22:45:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2021-11-20 22:45:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2021-11-20 22:45:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 22:45:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 22:45:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure tree_destroy [2021-11-20 22:45:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_destroy [2021-11-20 22:45:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:45:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_ec_hdr [2021-11-20 22:45:56,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_ec_hdr [2021-11-20 22:45:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure find_anchor_wl_entry [2021-11-20 22:45:56,139 INFO L138 BoogieDeclarations]: Found implementation of procedure find_anchor_wl_entry [2021-11-20 22:45:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 22:45:56,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 22:45:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-20 22:45:56,139 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-20 22:45:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure wl_tree_add [2021-11-20 22:45:56,139 INFO L138 BoogieDeclarations]: Found implementation of procedure wl_tree_add [2021-11-20 22:45:58,055 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:45:58,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:51:37,225 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:51:41,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:51:41,800 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 22:51:41,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:41 BoogieIcfgContainer [2021-11-20 22:51:41,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:51:41,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:51:41,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:51:41,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:51:41,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:45:45" (1/3) ... [2021-11-20 22:51:41,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75010de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:41, skipping insertion in model container [2021-11-20 22:51:41,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:45:53" (2/3) ... [2021-11-20 22:51:41,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75010de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:41, skipping insertion in model container [2021-11-20 22:51:41,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:41" (3/3) ... [2021-11-20 22:51:41,818 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2021-11-20 22:51:41,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:51:41,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:51:41,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:51:41,905 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:51:41,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:51:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) [2021-11-20 22:51:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 22:51:42,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:42,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:42,056 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 936932398, now seen corresponding path program 1 times [2021-11-20 22:51:42,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109700601] [2021-11-20 22:51:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:42,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:43,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109700601] [2021-11-20 22:51:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109700601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:43,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:43,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503077227] [2021-11-20 22:51:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:43,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:43,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:43,182 INFO L87 Difference]: Start difference. First operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:51:45,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:51:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:53,171 INFO L93 Difference]: Finished difference Result 16272 states and 25136 transitions. [2021-11-20 22:51:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:51:53,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-20 22:51:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:53,271 INFO L225 Difference]: With dead ends: 16272 [2021-11-20 22:51:53,271 INFO L226 Difference]: Without dead ends: 9373 [2021-11-20 22:51:53,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:53,345 INFO L933 BasicCegarLoop]: 11051 mSDtfsCounter, 10479 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10481 SdHoareTripleChecker+Valid, 14692 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:53,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10481 Valid, 14692 Invalid, 746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 743 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-20 22:51:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2021-11-20 22:51:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9365. [2021-11-20 22:51:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 5676 states have (on average 1.3428470754052149) internal successors, (7622), 6028 states have internal predecessors, (7622), 3345 states have call successors, (3345), 345 states have call predecessors, (3345), 343 states have return successors, (3320), 3245 states have call predecessors, (3320), 3320 states have call successors, (3320) [2021-11-20 22:51:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 14287 transitions. [2021-11-20 22:51:54,434 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 14287 transitions. Word has length 10 [2021-11-20 22:51:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 9365 states and 14287 transitions. [2021-11-20 22:51:54,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:51:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 14287 transitions. [2021-11-20 22:51:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 22:51:54,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:54,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:54,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:51:54,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:51:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1024824668, now seen corresponding path program 1 times [2021-11-20 22:51:54,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:51:54,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072907109] [2021-11-20 22:51:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:54,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:51:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:55,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:51:55,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072907109] [2021-11-20 22:51:55,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072907109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:55,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:55,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:51:55,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706454983] [2021-11-20 22:51:55,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:55,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:51:55,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:51:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:51:55,075 INFO L87 Difference]: Start difference. First operand 9365 states and 14287 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:51:57,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:04,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:05,177 INFO L93 Difference]: Finished difference Result 10818 states and 16382 transitions. [2021-11-20 22:52:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:52:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 22:52:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:05,278 INFO L225 Difference]: With dead ends: 10818 [2021-11-20 22:52:05,279 INFO L226 Difference]: Without dead ends: 10814 [2021-11-20 22:52:05,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:05,291 INFO L933 BasicCegarLoop]: 10314 mSDtfsCounter, 10286 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10294 SdHoareTripleChecker+Valid, 11593 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:05,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10294 Valid, 11593 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 633 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2021-11-20 22:52:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10814 states. [2021-11-20 22:52:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10814 to 10810. [2021-11-20 22:52:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10810 states, 6548 states have (on average 1.3391875381795968) internal successors, (8769), 6964 states have internal predecessors, (8769), 3811 states have call successors, (3811), 452 states have call predecessors, (3811), 450 states have return successors, (3788), 3691 states have call predecessors, (3788), 3788 states have call successors, (3788) [2021-11-20 22:52:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 16368 transitions. [2021-11-20 22:52:06,443 INFO L78 Accepts]: Start accepts. Automaton has 10810 states and 16368 transitions. Word has length 11 [2021-11-20 22:52:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:06,444 INFO L470 AbstractCegarLoop]: Abstraction has 10810 states and 16368 transitions. [2021-11-20 22:52:06,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states and 16368 transitions. [2021-11-20 22:52:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 22:52:06,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:06,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:06,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:52:06,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1709746703, now seen corresponding path program 1 times [2021-11-20 22:52:06,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:06,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482830973] [2021-11-20 22:52:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:06,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:52:07,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482830973] [2021-11-20 22:52:07,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482830973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:07,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:07,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:52:07,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415519268] [2021-11-20 22:52:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:07,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:52:07,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:52:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:07,088 INFO L87 Difference]: Start difference. First operand 10810 states and 16368 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:09,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:14,546 INFO L93 Difference]: Finished difference Result 11524 states and 17377 transitions. [2021-11-20 22:52:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:52:14,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 22:52:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:14,633 INFO L225 Difference]: With dead ends: 11524 [2021-11-20 22:52:14,633 INFO L226 Difference]: Without dead ends: 11520 [2021-11-20 22:52:14,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:14,644 INFO L933 BasicCegarLoop]: 10232 mSDtfsCounter, 10545 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10545 SdHoareTripleChecker+Valid, 11193 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:14,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10545 Valid, 11193 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 22:52:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2021-11-20 22:52:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 11518. [2021-11-20 22:52:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11518 states, 6975 states have (on average 1.3382078853046595) internal successors, (9334), 7422 states have internal predecessors, (9334), 4029 states have call successors, (4029), 515 states have call predecessors, (4029), 513 states have return successors, (4008), 3906 states have call predecessors, (4008), 4008 states have call successors, (4008) [2021-11-20 22:52:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 17371 transitions. [2021-11-20 22:52:15,643 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 17371 transitions. Word has length 12 [2021-11-20 22:52:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:15,643 INFO L470 AbstractCegarLoop]: Abstraction has 11518 states and 17371 transitions. [2021-11-20 22:52:15,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 17371 transitions. [2021-11-20 22:52:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 22:52:15,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:15,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:15,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:52:15,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:15,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1467488441, now seen corresponding path program 1 times [2021-11-20 22:52:15,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:15,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499073737] [2021-11-20 22:52:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:15,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:52:16,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499073737] [2021-11-20 22:52:16,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499073737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:16,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:16,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:52:16,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407770071] [2021-11-20 22:52:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:16,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:52:16,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:52:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:16,239 INFO L87 Difference]: Start difference. First operand 11518 states and 17371 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:18,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:21,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-20 22:52:25,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:30,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:32,675 INFO L93 Difference]: Finished difference Result 22173 states and 33396 transitions. [2021-11-20 22:52:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:52:32,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-20 22:52:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:32,798 INFO L225 Difference]: With dead ends: 22173 [2021-11-20 22:52:32,798 INFO L226 Difference]: Without dead ends: 22169 [2021-11-20 22:52:32,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:32,809 INFO L933 BasicCegarLoop]: 12623 mSDtfsCounter, 9304 mSDsluCounter, 10469 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9305 SdHoareTripleChecker+Valid, 22544 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:32,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9305 Valid, 22544 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1145 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2021-11-20 22:52:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22169 states. [2021-11-20 22:52:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22169 to 22153. [2021-11-20 22:52:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22153 states, 13413 states have (on average 1.337582941922016) internal successors, (17941), 14273 states have internal predecessors, (17941), 7724 states have call successors, (7724), 1021 states have call predecessors, (7724), 1015 states have return successors, (7711), 7491 states have call predecessors, (7711), 7702 states have call successors, (7711) [2021-11-20 22:52:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22153 states to 22153 states and 33376 transitions. [2021-11-20 22:52:34,584 INFO L78 Accepts]: Start accepts. Automaton has 22153 states and 33376 transitions. Word has length 13 [2021-11-20 22:52:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:34,584 INFO L470 AbstractCegarLoop]: Abstraction has 22153 states and 33376 transitions. [2021-11-20 22:52:34,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22153 states and 33376 transitions. [2021-11-20 22:52:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 22:52:34,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:34,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:34,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 22:52:34,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1747555252, now seen corresponding path program 1 times [2021-11-20 22:52:34,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:34,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70234296] [2021-11-20 22:52:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:34,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:52:35,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70234296] [2021-11-20 22:52:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70234296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:35,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:35,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:52:35,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951927323] [2021-11-20 22:52:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:35,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:52:35,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:52:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:35,071 INFO L87 Difference]: Start difference. First operand 22153 states and 33376 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:37,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:41,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-20 22:52:45,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:52:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:52:50,999 INFO L93 Difference]: Finished difference Result 37694 states and 56736 transitions. [2021-11-20 22:52:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:52:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 22:52:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:52:51,195 INFO L225 Difference]: With dead ends: 37694 [2021-11-20 22:52:51,196 INFO L226 Difference]: Without dead ends: 37690 [2021-11-20 22:52:51,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:51,219 INFO L933 BasicCegarLoop]: 13485 mSDtfsCounter, 8974 mSDsluCounter, 10483 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8976 SdHoareTripleChecker+Valid, 23418 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:52:51,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8976 Valid, 23418 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1249 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2021-11-20 22:52:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37690 states. [2021-11-20 22:52:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37690 to 37673. [2021-11-20 22:52:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37673 states, 22851 states have (on average 1.3405977856548947) internal successors, (30634), 24308 states have internal predecessors, (30634), 13003 states have call successors, (13003), 1837 states have call predecessors, (13003), 1818 states have return successors, (13075), 12598 states have call predecessors, (13075), 12979 states have call successors, (13075) [2021-11-20 22:52:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37673 states to 37673 states and 56712 transitions. [2021-11-20 22:52:54,350 INFO L78 Accepts]: Start accepts. Automaton has 37673 states and 56712 transitions. Word has length 14 [2021-11-20 22:52:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:52:54,351 INFO L470 AbstractCegarLoop]: Abstraction has 37673 states and 56712 transitions. [2021-11-20 22:52:54,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 37673 states and 56712 transitions. [2021-11-20 22:52:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 22:52:54,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:52:54,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 22:52:54,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:52:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:52:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1665300502, now seen corresponding path program 1 times [2021-11-20 22:52:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:52:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101025164] [2021-11-20 22:52:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:54,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:52:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:52:55,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:52:55,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101025164] [2021-11-20 22:52:55,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101025164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:52:55,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:55,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:52:55,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946140956] [2021-11-20 22:52:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:52:55,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:52:55,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:52:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:52:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:52:55,032 INFO L87 Difference]: Start difference. First operand 37673 states and 56712 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:52:57,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:02,953 INFO L93 Difference]: Finished difference Result 43904 states and 65887 transitions. [2021-11-20 22:53:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:53:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 22:53:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:03,298 INFO L225 Difference]: With dead ends: 43904 [2021-11-20 22:53:03,298 INFO L226 Difference]: Without dead ends: 43900 [2021-11-20 22:53:03,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:03,317 INFO L933 BasicCegarLoop]: 11655 mSDtfsCounter, 10518 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10518 SdHoareTripleChecker+Valid, 15054 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:03,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10518 Valid, 15054 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-20 22:53:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43900 states. [2021-11-20 22:53:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43900 to 43893. [2021-11-20 22:53:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43893 states, 26551 states have (on average 1.336183194606606) internal successors, (35477), 28268 states have internal predecessors, (35477), 15161 states have call successors, (15161), 2203 states have call predecessors, (15161), 2180 states have return successors, (15235), 14686 states have call predecessors, (15235), 15139 states have call successors, (15235) [2021-11-20 22:53:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43893 states to 43893 states and 65873 transitions. [2021-11-20 22:53:05,813 INFO L78 Accepts]: Start accepts. Automaton has 43893 states and 65873 transitions. Word has length 15 [2021-11-20 22:53:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:05,814 INFO L470 AbstractCegarLoop]: Abstraction has 43893 states and 65873 transitions. [2021-11-20 22:53:05,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 43893 states and 65873 transitions. [2021-11-20 22:53:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 22:53:05,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:05,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:53:05,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 22:53:05,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:53:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash -89641609, now seen corresponding path program 1 times [2021-11-20 22:53:05,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381526266] [2021-11-20 22:53:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:05,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:53:06,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381526266] [2021-11-20 22:53:06,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381526266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:53:06,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:53:06,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:53:06,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962781544] [2021-11-20 22:53:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:53:06,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:53:06,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:53:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:06,577 INFO L87 Difference]: Start difference. First operand 43893 states and 65873 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:09,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:13,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:16,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:22,303 INFO L93 Difference]: Finished difference Result 63657 states and 95664 transitions. [2021-11-20 22:53:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:53:22,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 22:53:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:22,611 INFO L225 Difference]: With dead ends: 63657 [2021-11-20 22:53:22,612 INFO L226 Difference]: Without dead ends: 63654 [2021-11-20 22:53:22,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:22,642 INFO L933 BasicCegarLoop]: 12349 mSDtfsCounter, 10504 mSDsluCounter, 7739 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10506 SdHoareTripleChecker+Valid, 19668 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:22,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10506 Valid, 19668 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1029 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2021-11-20 22:53:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63654 states. [2021-11-20 22:53:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63654 to 63619. [2021-11-20 22:53:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63619 states, 38527 states have (on average 1.3379707737430893) internal successors, (51548), 40932 states have internal predecessors, (51548), 21981 states have call successors, (21981), 3141 states have call predecessors, (21981), 3110 states have return successors, (22070), 21312 states have call predecessors, (22070), 21960 states have call successors, (22070) [2021-11-20 22:53:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63619 states to 63619 states and 95599 transitions. [2021-11-20 22:53:26,536 INFO L78 Accepts]: Start accepts. Automaton has 63619 states and 95599 transitions. Word has length 16 [2021-11-20 22:53:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:26,536 INFO L470 AbstractCegarLoop]: Abstraction has 63619 states and 95599 transitions. [2021-11-20 22:53:26,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 63619 states and 95599 transitions. [2021-11-20 22:53:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 22:53:26,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:26,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:53:26,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 22:53:26,538 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:53:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1511148685, now seen corresponding path program 1 times [2021-11-20 22:53:26,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032165975] [2021-11-20 22:53:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:26,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:53:27,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:27,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032165975] [2021-11-20 22:53:27,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032165975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:53:27,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:53:27,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:53:27,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962407839] [2021-11-20 22:53:27,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:53:27,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:53:27,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:53:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:27,183 INFO L87 Difference]: Start difference. First operand 63619 states and 95599 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:29,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:35,950 INFO L93 Difference]: Finished difference Result 86112 states and 128331 transitions. [2021-11-20 22:53:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:53:35,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-20 22:53:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:36,401 INFO L225 Difference]: With dead ends: 86112 [2021-11-20 22:53:36,402 INFO L226 Difference]: Without dead ends: 86108 [2021-11-20 22:53:36,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:36,446 INFO L933 BasicCegarLoop]: 10459 mSDtfsCounter, 9952 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9952 SdHoareTripleChecker+Valid, 12931 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:36,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9952 Valid, 12931 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 22:53:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86108 states. [2021-11-20 22:53:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86108 to 86105. [2021-11-20 22:53:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86105 states, 52052 states have (on average 1.3340889879351419) internal successors, (69442), 55467 states have internal predecessors, (69442), 29389 states have call successors, (29389), 4694 states have call predecessors, (29389), 4663 states have return successors, (29480), 28412 states have call predecessors, (29480), 29370 states have call successors, (29480) [2021-11-20 22:53:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86105 states to 86105 states and 128311 transitions. [2021-11-20 22:53:41,214 INFO L78 Accepts]: Start accepts. Automaton has 86105 states and 128311 transitions. Word has length 17 [2021-11-20 22:53:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:53:41,214 INFO L470 AbstractCegarLoop]: Abstraction has 86105 states and 128311 transitions. [2021-11-20 22:53:41,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 86105 states and 128311 transitions. [2021-11-20 22:53:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 22:53:41,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:53:41,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:53:41,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 22:53:41,216 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:53:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:53:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash -403954886, now seen corresponding path program 1 times [2021-11-20 22:53:41,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:53:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703211772] [2021-11-20 22:53:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:53:41,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:53:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:53:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:53:41,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:53:41,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703211772] [2021-11-20 22:53:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703211772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:53:41,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:53:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:53:41,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377432353] [2021-11-20 22:53:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:53:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:53:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:53:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:53:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:41,992 INFO L87 Difference]: Start difference. First operand 86105 states and 128311 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:53:44,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:48,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 22:53:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:53:52,083 INFO L93 Difference]: Finished difference Result 86107 states and 128312 transitions. [2021-11-20 22:53:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:53:52,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 22:53:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:53:52,418 INFO L225 Difference]: With dead ends: 86107 [2021-11-20 22:53:52,418 INFO L226 Difference]: Without dead ends: 86104 [2021-11-20 22:53:52,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:53:52,451 INFO L933 BasicCegarLoop]: 10001 mSDtfsCounter, 10543 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10545 SdHoareTripleChecker+Valid, 10002 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:53:52,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10545 Valid, 10002 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-20 22:53:52,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86104 states.