./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V --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 d23ad328ad1b14f5ea514e4bbe064d6db9a0af91365ea0b59871d4844f775f13 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:34:31,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:34:31,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:34:31,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:34:31,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:34:31,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:34:31,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:34:31,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:34:31,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:34:31,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:34:31,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:34:31,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:34:31,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:34:31,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:34:31,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:34:31,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:34:31,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:34:31,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:34:31,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:34:31,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:34:31,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:34:31,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:34:31,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:34:31,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:34:31,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:34:31,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:34:31,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:34:31,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:34:31,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:34:31,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:34:31,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:34:31,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:34:31,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:34:31,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:34:31,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:34:31,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:34:31,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:34:31,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:34:31,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:34:31,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:34:31,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:34:31,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:34:31,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:34:31,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:34:31,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:34:31,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:34:31,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:34:31,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:34:31,975 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:34:31,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:34:31,976 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:34:31,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:34:31,977 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:34:31,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:34:31,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:34:31,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:34:31,978 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:34:31,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:34:31,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:34:31,979 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:34:31,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:34:31,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:34:31,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:34:31,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:34:31,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:34:31,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:34:31,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:34:31,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:34:31,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:34:31,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:34:31,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:34:31,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:31,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:34:31,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:34:31,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:34:31,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:34:31,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:34:31,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:34:31,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:34:31,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:34:31,987 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_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d23ad328ad1b14f5ea514e4bbe064d6db9a0af91365ea0b59871d4844f775f13 [2021-11-23 02:34:32,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:34:32,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:34:32,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:34:32,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:34:32,417 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:34:32,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i [2021-11-23 02:34:32,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/data/b00458878/3bcb04d469f64c43afd40688362356f7/FLAGe4199d490 [2021-11-23 02:34:33,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:34:33,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i [2021-11-23 02:34:33,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/data/b00458878/3bcb04d469f64c43afd40688362356f7/FLAGe4199d490 [2021-11-23 02:34:34,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/data/b00458878/3bcb04d469f64c43afd40688362356f7 [2021-11-23 02:34:34,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:34:34,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:34:34,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:34,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:34:34,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:34:34,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:34" (1/1) ... [2021-11-23 02:34:34,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24019276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:34, skipping insertion in model container [2021-11-23 02:34:34,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:34" (1/1) ... [2021-11-23 02:34:34,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:34:34,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:34:39,070 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:39,074 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:39,076 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:39,076 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:39,077 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:40,362 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_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i[665471,665484] [2021-11-23 02:34:40,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:40,788 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:34:41,397 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:41,398 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:41,424 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:41,424 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:41,425 WARN L1533 CHandler]: Possible shadowing of function abort [2021-11-23 02:34:42,255 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_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i[665471,665484] [2021-11-23 02:34:42,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:42,520 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:34:42,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42 WrapperNode [2021-11-23 02:34:42,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:42,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:42,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:34:42,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:34:42,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:42,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:43,411 INFO L137 Inliner]: procedures = 574, calls = 7108, calls flagged for inlining = 215, calls inlined = 200, statements flattened = 17812 [2021-11-23 02:34:43,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:43,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:34:43,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:34:43,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:34:43,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:43,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:43,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:43,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:43,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:44,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:44,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:44,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:34:44,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:34:44,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:34:44,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:34:44,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (1/1) ... [2021-11-23 02:34:44,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:44,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:44,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:34:44,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ddb02d-d9ec-4262-9ba2-abb9f9be7df8/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:34:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:34:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:34:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_thread_groups [2021-11-23 02:34:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_thread_groups [2021-11-23 02:34:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_notify [2021-11-23 02:34:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_notify [2021-11-23 02:34:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure bio_endio [2021-11-23 02:34:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_endio [2021-11-23 02:34:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure init_async_submit [2021-11-23 02:34:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure init_async_submit [2021-11-23 02:34:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 02:34:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_finish_reshape [2021-11-23 02:34:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_finish_reshape [2021-11-23 02:34:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2021-11-23 02:34:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2021-11-23 02:34:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:34:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:34:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure flex_array_free [2021-11-23 02:34:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure flex_array_free [2021-11-23 02:34:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure sync_request [2021-11-23 02:34:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_request [2021-11-23 02:34:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure get_active_stripe [2021-11-23 02:34:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure get_active_stripe [2021-11-23 02:34:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:34:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:34:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:34:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:34:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_remove_disk [2021-11-23 02:34:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_remove_disk [2021-11-23 02:34:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-11-23 02:34:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-11-23 02:34:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-23 02:34:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-23 02:34:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_start_sync [2021-11-23 02:34:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_start_sync [2021-11-23 02:34:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure release_stripe_list [2021-11-23 02:34:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure release_stripe_list [2021-11-23 02:34:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure blk_finish_plug [2021-11-23 02:34:44,583 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_finish_plug [2021-11-23 02:34:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 02:34:44,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 02:34:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_check_reshape [2021-11-23 02:34:44,585 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_check_reshape [2021-11-23 02:34:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure bdevname [2021-11-23 02:34:44,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bdevname [2021-11-23 02:34:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-23 02:34:44,587 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-23 02:34:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure __clear_bit [2021-11-23 02:34:44,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __clear_bit [2021-11-23 02:34:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-23 02:34:44,588 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-23 02:34:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:34:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:34:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure setup_conf [2021-11-23 02:34:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_conf [2021-11-23 02:34:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_plug [2021-11-23 02:34:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_plug [2021-11-23 02:34:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2021-11-23 02:34:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2021-11-23 02:34:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:34:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:34:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure add_stripe_bio [2021-11-23 02:34:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure add_stripe_bio [2021-11-23 02:34:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure bio_init [2021-11-23 02:34:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_init [2021-11-23 02:34:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure generic_make_request [2021-11-23 02:34:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_make_request [2021-11-23 02:34:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-23 02:34:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-23 02:34:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure handle_stripe_clean_event [2021-11-23 02:34:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_stripe_clean_event [2021-11-23 02:34:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-23 02:34:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-23 02:34:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_endwrite [2021-11-23 02:34:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_endwrite [2021-11-23 02:34:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:34:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure async_memcpy [2021-11-23 02:34:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure async_memcpy [2021-11-23 02:34:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:34:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:34:44,598 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-23 02:34:44,598 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-23 02:34:44,599 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:34:44,599 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:34:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure __release_stripe [2021-11-23 02:34:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_stripe [2021-11-23 02:34:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure md_write_end [2021-11-23 02:34:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure md_write_end [2021-11-23 02:34:44,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:34:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqcount_begin [2021-11-23 02:34:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqcount_begin [2021-11-23 02:34:44,601 INFO L130 BoogieDeclarations]: Found specification of procedure is_badblock [2021-11-23 02:34:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure is_badblock [2021-11-23 02:34:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-11-23 02:34:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-11-23 02:34:44,602 INFO L130 BoogieDeclarations]: Found specification of procedure md_set_array_sectors [2021-11-23 02:34:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure md_set_array_sectors [2021-11-23 02:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_node [2021-11-23 02:34:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_node [2021-11-23 02:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure async_trigger_callback [2021-11-23 02:34:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure async_trigger_callback [2021-11-23 02:34:44,606 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_dec_bi_active_stripes [2021-11-23 02:34:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_dec_bi_active_stripes [2021-11-23 02:34:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:34:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:34:44,610 INFO L130 BoogieDeclarations]: Found specification of procedure register_md_personality [2021-11-23 02:34:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure register_md_personality [2021-11-23 02:34:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 02:34:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 02:34:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:34:44,612 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_md_personality [2021-11-23 02:34:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_md_personality [2021-11-23 02:34:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:34:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:34:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:34:44,620 INFO L130 BoogieDeclarations]: Found specification of procedure get_start_sect [2021-11-23 02:34:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure get_start_sect [2021-11-23 02:34:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure lock_device_hash_lock [2021-11-23 02:34:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_device_hash_lock [2021-11-23 02:34:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:34:44,621 INFO L130 BoogieDeclarations]: Found specification of procedure md_check_recovery [2021-11-23 02:34:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure md_check_recovery [2021-11-23 02:34:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure stripe_operations_active [2021-11-23 02:34:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stripe_operations_active [2021-11-23 02:34:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure stripe_hash_locks_hash [2021-11-23 02:34:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stripe_hash_locks_hash [2021-11-23 02:34:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure print_raid5_conf [2021-11-23 02:34:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure print_raid5_conf [2021-11-23 02:34:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure free_scratch_buffer [2021-11-23 02:34:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scratch_buffer [2021-11-23 02:34:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure raid6_next_disk [2021-11-23 02:34:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure raid6_next_disk [2021-11-23 02:34:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure raid6_d0 [2021-11-23 02:34:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure raid6_d0 [2021-11-23 02:34:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:34:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:34:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure handle_stripe [2021-11-23 02:34:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_stripe [2021-11-23 02:34:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure status [2021-11-23 02:34:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure status [2021-11-23 02:34:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-23 02:34:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-23 02:34:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_congested [2021-11-23 02:34:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_congested [2021-11-23 02:34:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:34:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:34:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure put_online_cpus [2021-11-23 02:34:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure put_online_cpus [2021-11-23 02:34:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_do_work [2021-11-23 02:34:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_do_work [2021-11-23 02:34:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-23 02:34:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-23 02:34:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2021-11-23 02:34:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2021-11-23 02:34:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:34:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:34:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:34:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:34:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:34:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-23 02:34:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-23 02:34:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_enable [2021-11-23 02:34:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_enable [2021-11-23 02:34:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2021-11-23 02:34:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2021-11-23 02:34:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 02:34:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 02:34:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure stripe_set_idx [2021-11-23 02:34:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure stripe_set_idx [2021-11-23 02:34:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:34:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure raid6_idx_to_slot [2021-11-23 02:34:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure raid6_idx_to_slot [2021-11-23 02:34:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_inc_bi_active_stripes [2021-11-23 02:34:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_inc_bi_active_stripes [2021-11-23 02:34:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_clear_badblocks [2021-11-23 02:34:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_clear_badblocks [2021-11-23 02:34:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:34:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:34:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:34:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure disk_stack_limits [2021-11-23 02:34:44,648 INFO L138 BoogieDeclarations]: Found implementation of procedure disk_stack_limits [2021-11-23 02:34:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:34:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure compute_blocknr [2021-11-23 02:34:44,648 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_blocknr [2021-11-23 02:34:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure remove_hash [2021-11-23 02:34:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_hash [2021-11-23 02:34:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure stripe_can_batch [2021-11-23 02:34:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure stripe_can_batch [2021-11-23 02:34:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure ops_run_check_pq [2021-11-23 02:34:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ops_run_check_pq [2021-11-23 02:34:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure stripe_hash [2021-11-23 02:34:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure stripe_hash [2021-11-23 02:34:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:34:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:34:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_wakeup_stripe_thread [2021-11-23 02:34:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_wakeup_stripe_thread [2021-11-23 02:34:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_set_badblocks [2021-11-23 02:34:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_set_badblocks [2021-11-23 02:34:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqcount_retry [2021-11-23 02:34:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqcount_retry [2021-11-23 02:34:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:34:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:34:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure release_inactive_stripe_list [2021-11-23 02:34:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure release_inactive_stripe_list [2021-11-23 02:34:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:34:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:34:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure release_stripe [2021-11-23 02:34:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure release_stripe [2021-11-23 02:34:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure md_error [2021-11-23 02:34:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure md_error [2021-11-23 02:34:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure md_done_sync [2021-11-23 02:34:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure md_done_sync [2021-11-23 02:34:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure __find_stripe [2021-11-23 02:34:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __find_stripe [2021-11-23 02:34:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure disk_devt [2021-11-23 02:34:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure disk_devt [2021-11-23 02:34:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:34:44,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:34:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure make_request [2021-11-23 02:34:44,655 INFO L138 BoogieDeclarations]: Found implementation of procedure make_request [2021-11-23 02:34:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:34:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:34:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write_seqcount_begin [2021-11-23 02:34:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure write_seqcount_begin [2021-11-23 02:34:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-23 02:34:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-23 02:34:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:34:44,657 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:34:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:34:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:34:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:34:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:34:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure handle_active_stripes [2021-11-23 02:34:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_active_stripes [2021-11-23 02:34:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2021-11-23 02:34:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2021-11-23 02:34:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2021-11-23 02:34:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2021-11-23 02:34:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-23 02:34:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:34:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:34:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:34:44,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:34:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_size [2021-11-23 02:34:44,669 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_size [2021-11-23 02:34:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure async_xor [2021-11-23 02:34:44,669 INFO L138 BoogieDeclarations]: Found implementation of procedure async_xor [2021-11-23 02:34:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure md_sync_acct [2021-11-23 02:34:44,669 INFO L138 BoogieDeclarations]: Found implementation of procedure md_sync_acct [2021-11-23 02:34:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_start_reshape [2021-11-23 02:34:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_start_reshape [2021-11-23 02:34:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:34:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:34:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_notify_dirent_safe [2021-11-23 02:34:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_notify_dirent_safe [2021-11-23 02:34:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_return [2021-11-23 02:34:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_return [2021-11-23 02:34:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:34:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_lock [2021-11-23 02:34:44,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_lock [2021-11-23 02:34:44,671 INFO L130 BoogieDeclarations]: Found specification of procedure async_copy_data [2021-11-23 02:34:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure async_copy_data [2021-11-23 02:34:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_spare_active [2021-11-23 02:34:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_spare_active [2021-11-23 02:34:44,672 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-23 02:34:44,672 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-23 02:34:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-23 02:34:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-23 02:34:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure write_seqcount_end [2021-11-23 02:34:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure write_seqcount_end [2021-11-23 02:34:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:34:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:34:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure md_allow_write [2021-11-23 02:34:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure md_allow_write [2021-11-23 02:34:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure return_io [2021-11-23 02:34:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure return_io [2021-11-23 02:34:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-23 02:34:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-23 02:34:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure lock_all_device_hash_locks_irq [2021-11-23 02:34:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_all_device_hash_locks_irq [2021-11-23 02:34:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:34:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:34:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:34:44,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:34:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:34:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:34:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure ops_complete_reconstruct [2021-11-23 02:34:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ops_complete_reconstruct [2021-11-23 02:34:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_device_hash_lock [2021-11-23 02:34:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_device_hash_lock [2021-11-23 02:34:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_resize [2021-11-23 02:34:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_resize [2021-11-23 02:34:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block_bio_remap [2021-11-23 02:34:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block_bio_remap [2021-11-23 02:34:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_takeover [2021-11-23 02:34:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_takeover [2021-11-23 02:34:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:34:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:34:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure md_register_thread [2021-11-23 02:34:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure md_register_thread [2021-11-23 02:34:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2021-11-23 02:34:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2021-11-23 02:34:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure run [2021-11-23 02:34:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2021-11-23 02:34:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:34:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:34:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:34:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure check_stripe_cache [2021-11-23 02:34:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure check_stripe_cache [2021-11-23 02:34:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-23 02:34:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-23 02:34:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure break_stripe_batch_list [2021-11-23 02:34:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure break_stripe_batch_list [2021-11-23 02:34:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_quiesce [2021-11-23 02:34:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_quiesce [2021-11-23 02:34:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:34:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:34:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:34:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-23 02:34:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-23 02:34:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure bio_reset [2021-11-23 02:34:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_reset [2021-11-23 02:34:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure drop_one_stripe [2021-11-23 02:34:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_one_stripe [2021-11-23 02:34:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2021-11-23 02:34:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2021-11-23 02:34:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:34:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_compute_sector [2021-11-23 02:34:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_compute_sector [2021-11-23 02:34:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_add_disk [2021-11-23 02:34:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_add_disk [2021-11-23 02:34:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block_bio_complete [2021-11-23 02:34:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block_bio_complete [2021-11-23 02:34:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure raid6_takeover [2021-11-23 02:34:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure raid6_takeover [2021-11-23 02:34:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:34:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:34:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-23 02:34:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-23 02:34:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:34:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:34:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:34:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:34:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure shrink_buffers [2021-11-23 02:34:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure shrink_buffers [2021-11-23 02:34:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure do_release_stripe [2021-11-23 02:34:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure do_release_stripe [2021-11-23 02:34:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 02:34:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 02:34:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure scribble_alloc [2021-11-23 02:34:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure scribble_alloc [2021-11-23 02:34:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure md_wait_for_blocked_rdev [2021-11-23 02:34:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wait_for_blocked_rdev [2021-11-23 02:34:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_mergeable_bvec [2021-11-23 02:34:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_mergeable_bvec [2021-11-23 02:34:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:34:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:34:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure check_reshape [2021-11-23 02:34:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure check_reshape [2021-11-23 02:34:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-23 02:34:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-23 02:34:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_free_stripe [2021-11-23 02:34:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure get_free_stripe [2021-11-23 02:34:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure mdname [2021-11-23 02:34:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure mdname [2021-11-23 02:34:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure raid4_takeover [2021-11-23 02:34:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure raid4_takeover [2021-11-23 02:34:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure r5_next_bio [2021-11-23 02:34:44,692 INFO L138 BoogieDeclarations]: Found implementation of procedure r5_next_bio [2021-11-23 02:34:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2021-11-23 02:34:44,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2021-11-23 02:34:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure free_conf [2021-11-23 02:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure free_conf [2021-11-23 02:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_cmpxchg [2021-11-23 02:34:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_cmpxchg [2021-11-23 02:34:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-23 02:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-23 02:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure only_parity [2021-11-23 02:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure only_parity [2021-11-23 02:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:34:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:34:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_unlock [2021-11-23 02:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_unlock [2021-11-23 02:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure to_addr_conv [2021-11-23 02:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure to_addr_conv [2021-11-23 02:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:34:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_3 [2021-11-23 02:34:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_3 [2021-11-23 02:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-23 02:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-23 02:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_2 [2021-11-23 02:34:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_2 [2021-11-23 02:34:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-23 02:34:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-23 02:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure grow_one_stripe [2021-11-23 02:34:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure grow_one_stripe [2021-11-23 02:34:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_stripe [2021-11-23 02:34:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_stripe [2021-11-23 02:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_dec_pending [2021-11-23 02:34:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_dec_pending [2021-11-23 02:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_4 [2021-11-23 02:34:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_4 [2021-11-23 02:34:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_resume [2021-11-23 02:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_resume [2021-11-23 02:34:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:34:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:34:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure async_gen_syndrome [2021-11-23 02:34:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure async_gen_syndrome [2021-11-23 02:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure release_stripe_plug [2021-11-23 02:34:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure release_stripe_plug [2021-11-23 02:34:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure raid6_check_reshape [2021-11-23 02:34:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure raid6_check_reshape [2021-11-23 02:34:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2021-11-23 02:34:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2021-11-23 02:34:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure has_failed [2021-11-23 02:34:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure has_failed [2021-11-23 02:34:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:34:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure get_online_cpus [2021-11-23 02:34:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure get_online_cpus [2021-11-23 02:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reconstruction [2021-11-23 02:34:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reconstruction [2021-11-23 02:34:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_all_device_hash_locks_irq [2021-11-23 02:34:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_all_device_hash_locks_irq [2021-11-23 02:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-23 02:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-23 02:34:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:34:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-23 02:34:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-23 02:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure raid5_free [2021-11-23 02:34:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure raid5_free [2021-11-23 02:34:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:34:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:34:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2021-11-23 02:34:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2021-11-23 02:34:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_unless [2021-11-23 02:34:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_unless [2021-11-23 02:34:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure calc_degraded [2021-11-23 02:34:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_degraded [2021-11-23 02:34:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_test_cpu [2021-11-23 02:34:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_test_cpu [2021-11-23 02:34:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_scratch_buffer [2021-11-23 02:34:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_scratch_buffer [2021-11-23 02:34:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:34:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:34:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2021-11-23 02:34:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2021-11-23 02:34:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:34:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:34:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure static_key_false [2021-11-23 02:34:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure static_key_false [2021-11-23 02:34:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure algorithm_valid_raid6 [2021-11-23 02:34:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure algorithm_valid_raid6 [2021-11-23 02:34:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure algorithm_valid_raid5 [2021-11-23 02:34:44,720 INFO L138 BoogieDeclarations]: Found implementation of procedure algorithm_valid_raid5 [2021-11-23 02:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_startwrite [2021-11-23 02:34:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_startwrite [2021-11-23 02:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure set_syndrome_sources [2021-11-23 02:34:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure set_syndrome_sources [2021-11-23 02:34:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 02:34:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 02:34:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-23 02:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-23 02:34:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-23 02:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-23 02:34:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure use_new_offset [2021-11-23 02:34:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure use_new_offset [2021-11-23 02:34:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:34:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:34:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 02:34:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 02:34:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2021-11-23 02:34:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2021-11-23 02:34:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:34:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:34:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2021-11-23 02:34:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2021-11-23 02:34:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:34:44,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:34:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure raid45_takeover_raid0 [2021-11-23 02:34:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure raid45_takeover_raid0 [2021-11-23 02:34:44,741 INFO L130 BoogieDeclarations]: Found specification of procedure to_addr_page [2021-11-23 02:34:44,741 INFO L138 BoogieDeclarations]: Found implementation of procedure to_addr_page [2021-11-23 02:34:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:34:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure flex_array_get [2021-11-23 02:34:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure flex_array_get [2021-11-23 02:34:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-11-23 02:34:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-11-23 02:34:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_add [2021-11-23 02:34:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_add [2021-11-23 02:34:46,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:34:46,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:34:47,619 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:35:08,884 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:35:16,967 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:35:16,967 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:35:16,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:16 BoogieIcfgContainer [2021-11-23 02:35:16,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:35:16,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:35:16,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:35:16,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:35:16,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:34:34" (1/3) ... [2021-11-23 02:35:16,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79509865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:16, skipping insertion in model container [2021-11-23 02:35:16,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:42" (2/3) ... [2021-11-23 02:35:16,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79509865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:16, skipping insertion in model container [2021-11-23 02:35:16,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:16" (3/3) ... [2021-11-23 02:35:16,994 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--raid456.ko-entry_point.cil.out.i [2021-11-23 02:35:17,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:35:17,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:35:17,071 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:35:17,078 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 [2021-11-23 02:35:17,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:35:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 5761 states, 3559 states have (on average 1.3897162124192188) internal successors, (4946), 3801 states have internal predecessors, (4946), 1963 states have call successors, (1963), 238 states have call predecessors, (1963), 237 states have return successors, (1951), 1910 states have call predecessors, (1951), 1951 states have call successors, (1951) [2021-11-23 02:35:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-23 02:35:17,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:17,263 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:17,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash 811835427, now seen corresponding path program 1 times [2021-11-23 02:35:17,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:17,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403422777] [2021-11-23 02:35:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:17,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:35:18,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403422777] [2021-11-23 02:35:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403422777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:18,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:18,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:18,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876687272] [2021-11-23 02:35:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:18,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:18,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:19,074 INFO L87 Difference]: Start difference. First operand has 5761 states, 3559 states have (on average 1.3897162124192188) internal successors, (4946), 3801 states have internal predecessors, (4946), 1963 states have call successors, (1963), 238 states have call predecessors, (1963), 237 states have return successors, (1951), 1910 states have call predecessors, (1951), 1951 states have call successors, (1951) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:35:21,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:25,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:27,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:30,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:35,073 INFO L93 Difference]: Finished difference Result 16973 states and 26135 transitions. [2021-11-23 02:35:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:35,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 622 [2021-11-23 02:35:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:35,248 INFO L225 Difference]: With dead ends: 16973 [2021-11-23 02:35:35,248 INFO L226 Difference]: Without dead ends: 11158 [2021-11-23 02:35:35,306 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 [2021-11-23 02:35:35,312 INFO L933 BasicCegarLoop]: 10042 mSDtfsCounter, 8557 mSDsluCounter, 8841 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8567 SdHoareTripleChecker+Valid, 18206 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:35,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8567 Valid, 18206 Invalid, 1375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1370 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2021-11-23 02:35:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2021-11-23 02:35:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 11144. [2021-11-23 02:35:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11144 states, 6856 states have (on average 1.3764585764294048) internal successors, (9437), 7309 states have internal predecessors, (9437), 3817 states have call successors, (3817), 471 states have call predecessors, (3817), 470 states have return successors, (3822), 3728 states have call predecessors, (3822), 3812 states have call successors, (3822) [2021-11-23 02:35:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 17076 transitions. [2021-11-23 02:35:36,552 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 17076 transitions. Word has length 622 [2021-11-23 02:35:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:36,563 INFO L470 AbstractCegarLoop]: Abstraction has 11144 states and 17076 transitions. [2021-11-23 02:35:36,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:35:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 17076 transitions. [2021-11-23 02:35:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-11-23 02:35:36,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:36,596 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:36,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:35:36,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1496071434, now seen corresponding path program 1 times [2021-11-23 02:35:36,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:36,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240546769] [2021-11-23 02:35:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:36,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:35:37,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:37,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240546769] [2021-11-23 02:35:37,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240546769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:37,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:37,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:37,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809280106] [2021-11-23 02:35:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:37,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:37,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:37,430 INFO L87 Difference]: Start difference. First operand 11144 states and 17076 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:35:39,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:35:43,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:46,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:49,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:53,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:53,017 INFO L93 Difference]: Finished difference Result 33112 states and 50758 transitions. [2021-11-23 02:35:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:53,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 625 [2021-11-23 02:35:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:53,249 INFO L225 Difference]: With dead ends: 33112 [2021-11-23 02:35:53,249 INFO L226 Difference]: Without dead ends: 22085 [2021-11-23 02:35:53,334 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 [2021-11-23 02:35:53,337 INFO L933 BasicCegarLoop]: 9908 mSDtfsCounter, 8399 mSDsluCounter, 8672 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8409 SdHoareTripleChecker+Valid, 17904 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:53,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8409 Valid, 17904 Invalid, 1377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2021-11-23 02:35:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22085 states. [2021-11-23 02:35:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22085 to 22071. [2021-11-23 02:35:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22071 states, 13585 states have (on average 1.3778432094221569) internal successors, (18718), 14489 states have internal predecessors, (18718), 7547 states have call successors, (7547), 939 states have call predecessors, (7547), 938 states have return successors, (7572), 7372 states have call predecessors, (7572), 7542 states have call successors, (7572) [2021-11-23 02:35:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22071 states to 22071 states and 33837 transitions. [2021-11-23 02:35:55,182 INFO L78 Accepts]: Start accepts. Automaton has 22071 states and 33837 transitions. Word has length 625 [2021-11-23 02:35:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:55,187 INFO L470 AbstractCegarLoop]: Abstraction has 22071 states and 33837 transitions. [2021-11-23 02:35:55,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:35:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22071 states and 33837 transitions. [2021-11-23 02:35:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-11-23 02:35:55,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:55,213 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:55,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:35:55,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash -961483177, now seen corresponding path program 1 times [2021-11-23 02:35:55,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:55,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915836580] [2021-11-23 02:35:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:55,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:35:56,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:56,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915836580] [2021-11-23 02:35:56,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915836580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:56,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:56,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:56,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65467201] [2021-11-23 02:35:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:56,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:56,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:56,017 INFO L87 Difference]: Start difference. First operand 22071 states and 33837 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:35:58,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:01,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:03,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:05,847 INFO L93 Difference]: Finished difference Result 22557 states and 34452 transitions. [2021-11-23 02:36:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 625 [2021-11-23 02:36:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:06,024 INFO L225 Difference]: With dead ends: 22557 [2021-11-23 02:36:06,025 INFO L226 Difference]: Without dead ends: 22554 [2021-11-23 02:36:06,053 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 [2021-11-23 02:36:06,054 INFO L933 BasicCegarLoop]: 8138 mSDtfsCounter, 8483 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8493 SdHoareTripleChecker+Valid, 8718 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8493 Valid, 8718 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 772 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-23 02:36:06,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22554 states. [2021-11-23 02:36:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22554 to 22554. [2021-11-23 02:36:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22554 states, 13857 states have (on average 1.3743956123259002) internal successors, (19045), 14779 states have internal predecessors, (19045), 7684 states have call successors, (7684), 1011 states have call predecessors, (7684), 1012 states have return successors, (7720), 7506 states have call predecessors, (7720), 7680 states have call successors, (7720) [2021-11-23 02:36:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 34449 transitions. [2021-11-23 02:36:08,003 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 34449 transitions. Word has length 625 [2021-11-23 02:36:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:08,005 INFO L470 AbstractCegarLoop]: Abstraction has 22554 states and 34449 transitions. [2021-11-23 02:36:08,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:36:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 34449 transitions. [2021-11-23 02:36:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2021-11-23 02:36:08,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:08,027 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:08,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:36:08,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash 255651988, now seen corresponding path program 1 times [2021-11-23 02:36:08,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:08,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953890591] [2021-11-23 02:36:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:08,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:36:09,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953890591] [2021-11-23 02:36:09,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953890591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:09,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:09,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:09,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603075548] [2021-11-23 02:36:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:09,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:09,054 INFO L87 Difference]: Start difference. First operand 22554 states and 34449 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:36:11,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:14,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:16,418 INFO L93 Difference]: Finished difference Result 22558 states and 34451 transitions. [2021-11-23 02:36:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:16,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 626 [2021-11-23 02:36:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:16,549 INFO L225 Difference]: With dead ends: 22558 [2021-11-23 02:36:16,549 INFO L226 Difference]: Without dead ends: 22555 [2021-11-23 02:36:16,564 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 [2021-11-23 02:36:16,565 INFO L933 BasicCegarLoop]: 8136 mSDtfsCounter, 8509 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8516 SdHoareTripleChecker+Valid, 8694 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:16,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8516 Valid, 8694 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 762 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 02:36:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22555 states. [2021-11-23 02:36:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22555 to 22555. [2021-11-23 02:36:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22555 states, 13858 states have (on average 1.374296435272045) internal successors, (19045), 14779 states have internal predecessors, (19045), 7683 states have call successors, (7683), 1012 states have call predecessors, (7683), 1013 states have return successors, (7720), 7506 states have call predecessors, (7720), 7680 states have call successors, (7720) [2021-11-23 02:36:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22555 states to 22555 states and 34448 transitions. [2021-11-23 02:36:18,268 INFO L78 Accepts]: Start accepts. Automaton has 22555 states and 34448 transitions. Word has length 626 [2021-11-23 02:36:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:18,271 INFO L470 AbstractCegarLoop]: Abstraction has 22555 states and 34448 transitions. [2021-11-23 02:36:18,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:36:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22555 states and 34448 transitions. [2021-11-23 02:36:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2021-11-23 02:36:18,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:18,283 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:18,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:36:18,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1930276827, now seen corresponding path program 1 times [2021-11-23 02:36:18,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:18,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466954686] [2021-11-23 02:36:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:18,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:36:18,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:18,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466954686] [2021-11-23 02:36:18,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466954686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:18,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:18,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:18,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443444768] [2021-11-23 02:36:18,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:18,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:18,812 INFO L87 Difference]: Start difference. First operand 22555 states and 34448 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:36:20,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:25,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:28,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:31,705 INFO L93 Difference]: Finished difference Result 66694 states and 101993 transitions. [2021-11-23 02:36:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 629 [2021-11-23 02:36:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:31,998 INFO L225 Difference]: With dead ends: 66694 [2021-11-23 02:36:31,999 INFO L226 Difference]: Without dead ends: 44256 [2021-11-23 02:36:32,269 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 [2021-11-23 02:36:32,271 INFO L933 BasicCegarLoop]: 9923 mSDtfsCounter, 8359 mSDsluCounter, 8669 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8366 SdHoareTripleChecker+Valid, 17915 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:32,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8366 Valid, 17915 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1377 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-23 02:36:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44256 states. [2021-11-23 02:36:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44256 to 44241. [2021-11-23 02:36:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44241 states, 27193 states have (on average 1.3763836281395947) internal successors, (37428), 29017 states have internal predecessors, (37428), 15097 states have call successors, (15097), 1948 states have call predecessors, (15097), 1950 states have return successors, (15174), 14748 states have call predecessors, (15174), 15094 states have call successors, (15174) [2021-11-23 02:36:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44241 states to 44241 states and 67699 transitions. [2021-11-23 02:36:35,208 INFO L78 Accepts]: Start accepts. Automaton has 44241 states and 67699 transitions. Word has length 629 [2021-11-23 02:36:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:35,210 INFO L470 AbstractCegarLoop]: Abstraction has 44241 states and 67699 transitions. [2021-11-23 02:36:35,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:36:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 44241 states and 67699 transitions. [2021-11-23 02:36:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2021-11-23 02:36:35,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:35,222 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:35,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:36:35,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -667858694, now seen corresponding path program 1 times [2021-11-23 02:36:35,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:35,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122212957] [2021-11-23 02:36:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:35,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:36:36,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:36,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122212957] [2021-11-23 02:36:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122212957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:36,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:36,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:36,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900347843] [2021-11-23 02:36:36,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:36,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:36,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:36,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:36,099 INFO L87 Difference]: Start difference. First operand 44241 states and 67699 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:36:38,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:40,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:43,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:45,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:48,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:50,286 INFO L93 Difference]: Finished difference Result 44283 states and 67796 transitions. [2021-11-23 02:36:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 627 [2021-11-23 02:36:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:50,661 INFO L225 Difference]: With dead ends: 44283 [2021-11-23 02:36:50,661 INFO L226 Difference]: Without dead ends: 44280 [2021-11-23 02:36:50,677 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 [2021-11-23 02:36:50,678 INFO L933 BasicCegarLoop]: 8134 mSDtfsCounter, 8467 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8488 SdHoareTripleChecker+Valid, 8721 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:50,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8488 Valid, 8721 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 771 Invalid, 5 Unknown, 0 Unchecked, 13.1s Time] [2021-11-23 02:36:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44280 states. [2021-11-23 02:36:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44280 to 44256. [2021-11-23 02:36:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44256 states, 27201 states have (on average 1.3762361677879489) internal successors, (37435), 29024 states have internal predecessors, (37435), 15096 states have call successors, (15096), 1956 states have call predecessors, (15096), 1958 states have return successors, (15174), 14748 states have call predecessors, (15174), 15094 states have call successors, (15174) [2021-11-23 02:36:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44256 states to 44256 states and 67705 transitions. [2021-11-23 02:36:53,350 INFO L78 Accepts]: Start accepts. Automaton has 44256 states and 67705 transitions. Word has length 627 [2021-11-23 02:36:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:53,352 INFO L470 AbstractCegarLoop]: Abstraction has 44256 states and 67705 transitions. [2021-11-23 02:36:53,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:36:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 44256 states and 67705 transitions. [2021-11-23 02:36:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2021-11-23 02:36:53,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:53,365 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:53,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:36:53,365 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash 740591181, now seen corresponding path program 1 times [2021-11-23 02:36:53,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:53,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942582176] [2021-11-23 02:36:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:53,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:36:54,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:54,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942582176] [2021-11-23 02:36:54,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942582176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:54,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:54,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:54,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157126850] [2021-11-23 02:36:54,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:54,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:54,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:54,070 INFO L87 Difference]: Start difference. First operand 44256 states and 67705 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:36:56,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:00,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:02,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:05,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:10,558 INFO L93 Difference]: Finished difference Result 131528 states and 201394 transitions. [2021-11-23 02:37:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 630 [2021-11-23 02:37:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:11,073 INFO L225 Difference]: With dead ends: 131528 [2021-11-23 02:37:11,073 INFO L226 Difference]: Without dead ends: 87389 [2021-11-23 02:37:11,234 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 [2021-11-23 02:37:11,234 INFO L933 BasicCegarLoop]: 9982 mSDtfsCounter, 8333 mSDsluCounter, 8666 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8343 SdHoareTripleChecker+Valid, 17971 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:11,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8343 Valid, 17971 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1382 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2021-11-23 02:37:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87389 states. [2021-11-23 02:37:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87389 to 87379. [2021-11-23 02:37:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87379 states, 53748 states have (on average 1.377558234725013) internal successors, (74041), 57351 states have internal predecessors, (74041), 29823 states have call successors, (29823), 3805 states have call predecessors, (29823), 3807 states have return successors, (29981), 29139 states have call predecessors, (29981), 29821 states have call successors, (29981) [2021-11-23 02:37:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87379 states to 87379 states and 133845 transitions. [2021-11-23 02:37:16,451 INFO L78 Accepts]: Start accepts. Automaton has 87379 states and 133845 transitions. Word has length 630 [2021-11-23 02:37:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:16,452 INFO L470 AbstractCegarLoop]: Abstraction has 87379 states and 133845 transitions. [2021-11-23 02:37:16,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:37:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 87379 states and 133845 transitions. [2021-11-23 02:37:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-11-23 02:37:16,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:16,466 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:16,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:37:16,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash 768086103, now seen corresponding path program 1 times [2021-11-23 02:37:16,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:16,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509904093] [2021-11-23 02:37:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:16,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7051 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7051 trivial. 0 not checked. [2021-11-23 02:37:17,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:17,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509904093] [2021-11-23 02:37:17,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509904093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:17,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:17,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:37:17,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321207616] [2021-11-23 02:37:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:17,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:17,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:37:17,312 INFO L87 Difference]: Start difference. First operand 87379 states and 133845 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:37:19,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:22,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:26,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:29,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:35,744 INFO L93 Difference]: Finished difference Result 173402 states and 265819 transitions. [2021-11-23 02:37:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 628 [2021-11-23 02:37:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:36,883 INFO L225 Difference]: With dead ends: 173402 [2021-11-23 02:37:36,883 INFO L226 Difference]: Without dead ends: 172832 [2021-11-23 02:37:37,011 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 [2021-11-23 02:37:37,012 INFO L933 BasicCegarLoop]: 9852 mSDtfsCounter, 8371 mSDsluCounter, 8502 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8378 SdHoareTripleChecker+Valid, 17679 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:37,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8378 Valid, 17679 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1357 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2021-11-23 02:37:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172832 states.