./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:31,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:31,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:31,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:31,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:31,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:31,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:31,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:31,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:31,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:31,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:31,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:31,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:31,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:31,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:31,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:31,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:31,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:31,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:31,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:31,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:31,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:31,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:31,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:31,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:31,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:31,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:31,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:31,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:31,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:31,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:31,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:31,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:31,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:31,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:31,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:31,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:31,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:31,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:31,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:31,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:31,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:45:31,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:31,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:31,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:31,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:31,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:31,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:31,326 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:31,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:31,327 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:31,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:31,328 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:31,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:31,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:31,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:31,330 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:31,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:31,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:31,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:31,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:31,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:31,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:31,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:45:31,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:31,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:45:31,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:45:31,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:31,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:45:31,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:31,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:31,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:31,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:31,337 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:31,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:31,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:45:31,338 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:31,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:31,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:45:31,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:31,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ab79e6f1cd195ff89e9316632c84dfdb1ee61de295f555610ad4d3f6315c80 [2022-11-03 01:45:31,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:31,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:31,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:31,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:31,742 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:31,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-03 01:45:31,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/data/87f6deb70/820ff90c27d9419d9ee6205a1ac981d8/FLAG9cd896107 [2022-11-03 01:45:33,284 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:33,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-03 01:45:33,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/data/87f6deb70/820ff90c27d9419d9ee6205a1ac981d8/FLAG9cd896107 [2022-11-03 01:45:33,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/data/87f6deb70/820ff90c27d9419d9ee6205a1ac981d8 [2022-11-03 01:45:33,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:33,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:33,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:33,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:33,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:33,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:33" (1/1) ... [2022-11-03 01:45:33,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a064471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:33, skipping insertion in model container [2022-11-03 01:45:33,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:33" (1/1) ... [2022-11-03 01:45:33,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:34,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:41,511 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_672eaa47-2642-473b-b822-475ecb499333/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-03 01:45:42,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:42,087 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:43,480 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_672eaa47-2642-473b-b822-475ecb499333/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i[705142,705155] [2022-11-03 01:45:43,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:44,052 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:44,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44 WrapperNode [2022-11-03 01:45:44,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:44,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:44,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:44,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:44,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:44,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:45,324 INFO L138 Inliner]: procedures = 644, calls = 13325, calls flagged for inlining = 231, calls inlined = 205, statements flattened = 26582 [2022-11-03 01:45:45,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:45,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:45,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:45,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:45,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:45,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:45,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:45,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:46,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:46,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:46,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:46,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:46,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:46,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:46,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:46,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:46,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (1/1) ... [2022-11-03 01:45:47,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:47,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:47,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672eaa47-2642-473b-b822-475ecb499333/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_init [2022-11-03 01:45:47,188 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_init [2022-11-03 01:45:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_ec_hdr [2022-11-03 01:45:47,189 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_ec_hdr [2022-11-03 01:45:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_unmap_leb [2022-11-03 01:45:47,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_unmap_leb [2022-11-03 01:45:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-03 01:45:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-03 01:45:47,190 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-03 01:45:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_create [2022-11-03 01:45:47,190 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_create [2022-11-03 01:45:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_resize_volume [2022-11-03 01:45:47,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_resize_volume [2022-11-03 01:45:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_internal_volumes [2022-11-03 01:45:47,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_internal_volumes [2022-11-03 01:45:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure __schedule_ubi_work [2022-11-03 01:45:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __schedule_ubi_work [2022-11-03 01:45:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_volume_notify [2022-11-03 01:45:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_volume_notify [2022-11-03 01:45:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:45:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:45:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_detach_mtd_dev [2022-11-03 01:45:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_detach_mtd_dev [2022-11-03 01:45:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2022-11-03 01:45:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2022-11-03 01:45:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure erase_block [2022-11-03 01:45:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_block [2022-11-03 01:45:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_pending [2022-11-03 01:45:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_pending [2022-11-03 01:45:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-03 01:45:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-03 01:45:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 01:45:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 01:45:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2022-11-03 01:45:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2022-11-03 01:45:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_read_leb [2022-11-03 01:45:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_read_leb [2022-11-03 01:45:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_device_info [2022-11-03 01:45:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_device_info [2022-11-03 01:45:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_cdev_ioctl [2022-11-03 01:45:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_cdev_ioctl [2022-11-03 01:45:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-03 01:45:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ckvol_mutex_of_ubi_device [2022-11-03 01:45:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 01:45:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 01:45:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_sysfs_close [2022-11-03 01:45:47,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_sysfs_close [2022-11-03 01:45:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure vtbl_check [2022-11-03 01:45:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure vtbl_check [2022-11-03 01:45:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_vid_hdr [2022-11-03 01:45:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_vid_hdr [2022-11-03 01:45:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_cdev_ioctl [2022-11-03 01:45:47,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_cdev_ioctl [2022-11-03 01:45:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-03 01:45:47,200 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-03 01:45:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_compare_lebs [2022-11-03 01:45:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_compare_lebs [2022-11-03 01:45:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_fm_peb [2022-11-03 01:45:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_fm_peb [2022-11-03 01:45:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:45:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:45:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure __init_rwsem [2022-11-03 01:45:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_rwsem [2022-11-03 01:45:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure vol_cdev_ioctl [2022-11-03 01:45:47,202 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_cdev_ioctl [2022-11-03 01:45:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_fastmap [2022-11-03 01:45:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_fastmap [2022-11-03 01:45:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure is_error_sane [2022-11-03 01:45:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure is_error_sane [2022-11-03 01:45:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_vid_hdr [2022-11-03 01:45:47,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_vid_hdr [2022-11-03 01:45:47,204 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vid_hdr [2022-11-03 01:45:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vid_hdr [2022-11-03 01:45:47,204 INFO L130 BoogieDeclarations]: Found specification of procedure rb_next [2022-11-03 01:45:47,204 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_next [2022-11-03 01:45:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_volume [2022-11-03 01:45:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_volume [2022-11-03 01:45:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:45:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calc_data_len [2022-11-03 01:45:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calc_data_len [2022-11-03 01:45:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_data [2022-11-03 01:45:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_data [2022-11-03 01:45:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_close [2022-11-03 01:45:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_close [2022-11-03 01:45:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_free_vid_hdr [2022-11-03 01:45:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_free_vid_hdr [2022-11-03 01:45:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:45:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 01:45:47,207 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 01:45:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure rb_link_node [2022-11-03 01:45:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_link_node [2022-11-03 01:45:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_find_av [2022-11-03 01:45:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_find_av [2022-11-03 01:45:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:45:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:45:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 01:45:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 01:45:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:45:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:45:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_ubi_work [2022-11-03 01:45:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_ubi_work [2022-11-03 01:45:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase___0 [2022-11-03 01:45:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase___0 [2022-11-03 01:45:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:45:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:45:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 01:45:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 01:45:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_ec_hdr [2022-11-03 01:45:47,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_ec_hdr [2022-11-03 01:45:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:45:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_not_bad [2022-11-03 01:45:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_not_bad [2022-11-03 01:45:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 01:45:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 01:45:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_eb [2022-11-03 01:45:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_eb [2022-11-03 01:45:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:45:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:45:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_calculate_reserved [2022-11-03 01:45:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_calculate_reserved [2022-11-03 01:45:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_debugfs_exit_dev [2022-11-03 01:45:47,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_debugfs_exit_dev [2022-11-03 01:45:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:45:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr [2022-11-03 01:45:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr [2022-11-03 01:45:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-03 01:45:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_buf_mutex_of_ubi_device [2022-11-03 01:45:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure find_mean_wl_entry [2022-11-03 01:45:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mean_wl_entry [2022-11-03 01:45:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-03 01:45:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-03 01:45:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:45:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-03 01:45:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_move_mutex_of_ubi_device [2022-11-03 01:45:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-03 01:45:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-03 01:45:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:45:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:45:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_data [2022-11-03 01:45:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_data [2022-11-03 01:45:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_add [2022-11-03 01:45:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_add [2022-11-03 01:45:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-03 01:45:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-03 01:45:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-03 01:45:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-03 01:45:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2022-11-03 01:45:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2022-11-03 01:45:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:45:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:45:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 01:45:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 01:45:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2022-11-03 01:45:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2022-11-03 01:45:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure new_fm_vhdr [2022-11-03 01:45:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure new_fm_vhdr [2022-11-03 01:45:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure yield [2022-11-03 01:45:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure yield [2022-11-03 01:45:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2022-11-03 01:45:47,229 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2022-11-03 01:45:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure find_wl_entry [2022-11-03 01:45:47,229 INFO L138 BoogieDeclarations]: Found implementation of procedure find_wl_entry [2022-11-03 01:45:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_io [2022-11-03 01:45:47,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_io [2022-11-03 01:45:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure __vmalloc [2022-11-03 01:45:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __vmalloc [2022-11-03 01:45:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_is_bad [2022-11-03 01:45:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_is_bad [2022-11-03 01:45:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure vol_id2idx [2022-11-03 01:45:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure vol_id2idx [2022-11-03 01:45:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-03 01:45:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_mutex_of_ubi_device [2022-11-03 01:45:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-03 01:45:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-03 01:45:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:45:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_update_reserved [2022-11-03 01:45:47,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_update_reserved [2022-11-03 01:45:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_fm_peb [2022-11-03 01:45:47,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_fm_peb [2022-11-03 01:45:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure in_wl_tree [2022-11-03 01:45:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure in_wl_tree [2022-11-03 01:45:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_ai [2022-11-03 01:45:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_ai [2022-11-03 01:45:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-11-03 01:45:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-11-03 01:45:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-03 01:45:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_move_mutex_of_ubi_device [2022-11-03 01:45:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_get_peb [2022-11-03 01:45:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_get_peb [2022-11-03 01:45:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 01:45:47,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 01:45:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_ai [2022-11-03 01:45:47,235 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_ai [2022-11-03 01:45:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:45:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:45:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_aeb [2022-11-03 01:45:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_aeb [2022-11-03 01:45:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_av [2022-11-03 01:45:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_av [2022-11-03 01:45:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure write_leb [2022-11-03 01:45:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure write_leb [2022-11-03 01:45:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure rb_erase [2022-11-03 01:45:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_erase [2022-11-03 01:45:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2022-11-03 01:45:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2022-11-03 01:45:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_erase [2022-11-03 01:45:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_erase [2022-11-03 01:45:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure prot_queue_del [2022-11-03 01:45:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure prot_queue_del [2022-11-03 01:45:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure validate_ec_hdr [2022-11-03 01:45:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_ec_hdr [2022-11-03 01:45:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_compat [2022-11-03 01:45:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_compat [2022-11-03 01:45:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_chk_gen [2022-11-03 01:45:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_chk_gen [2022-11-03 01:45:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_av [2022-11-03 01:45:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_av [2022-11-03 01:45:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-03 01:45:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-03 01:45:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_get_device [2022-11-03 01:45:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_get_device [2022-11-03 01:45:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure rb_first [2022-11-03 01:45:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_first [2022-11-03 01:45:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_vid_hdr [2022-11-03 01:45:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_vid_hdr [2022-11-03 01:45:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2022-11-03 01:45:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2022-11-03 01:45:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_lock [2022-11-03 01:45:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_lock [2022-11-03 01:45:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 01:45:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 01:45:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure rb_insert_color [2022-11-03 01:45:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure rb_insert_color [2022-11-03 01:45:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read [2022-11-03 01:45:47,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read [2022-11-03 01:45:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_change_vtbl_record [2022-11-03 01:45:47,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_change_vtbl_record [2022-11-03 01:45:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure uif_close [2022-11-03 01:45:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure uif_close [2022-11-03 01:45:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2022-11-03 01:45:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2022-11-03 01:45:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_atomic_leb_change [2022-11-03 01:45:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_atomic_leb_change [2022-11-03 01:45:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:45:47,251 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:45:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_ro_mode [2022-11-03 01:45:47,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_ro_mode [2022-11-03 01:45:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:45:47,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-11-03 01:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-11-03 01:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-03 01:45:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fm_mutex_of_ubi_device [2022-11-03 01:45:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-03 01:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_buf_mutex_of_ubi_device [2022-11-03 01:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-03 01:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ubi_devices_mutex [2022-11-03 01:45:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:45:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure scan_all [2022-11-03 01:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_all [2022-11-03 01:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_flash [2022-11-03 01:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_flash [2022-11-03 01:45:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_zalloc_vid_hdr [2022-11-03 01:45:47,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_zalloc_vid_hdr [2022-11-03 01:45:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_is_fm_block [2022-11-03 01:45:47,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_is_fm_block [2022-11-03 01:45:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure leb_write_unlock [2022-11-03 01:45:47,260 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_write_unlock [2022-11-03 01:45:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-03 01:45:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_mutex_of_ubi_device [2022-11-03 01:45:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure device_register [2022-11-03 01:45:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure device_register [2022-11-03 01:45:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_sync_erase [2022-11-03 01:45:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_sync_erase [2022-11-03 01:45:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:45:47,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:45:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:45:47,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:45:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure idx2vol_id [2022-11-03 01:45:47,262 INFO L138 BoogieDeclarations]: Found implementation of procedure idx2vol_id [2022-11-03 01:45:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-03 01:45:47,263 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-03 01:45:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_peb_ec_hdr [2022-11-03 01:45:47,263 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_peb_ec_hdr [2022-11-03 01:45:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vol_info [2022-11-03 01:45:47,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vol_info [2022-11-03 01:45:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:45:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:45:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure get_peb_for_wl [2022-11-03 01:45:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure get_peb_for_wl [2022-11-03 01:45:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-03 01:45:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-03 01:45:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:45:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:45:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure blocking_notifier_call_chain [2022-11-03 01:45:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure blocking_notifier_call_chain [2022-11-03 01:45:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure create_vtbl [2022-11-03 01:45:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure create_vtbl [2022-11-03 01:45:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure prandom_u32 [2022-11-03 01:45:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure prandom_u32 [2022-11-03 01:45:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:45:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:45:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2022-11-03 01:45:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2022-11-03 01:45:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:45:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure do_work [2022-11-03 01:45:47,267 INFO L138 BoogieDeclarations]: Found implementation of procedure do_work [2022-11-03 01:45:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:45:47,267 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:45:47,267 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_in_wl_tree [2022-11-03 01:45:47,267 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_in_wl_tree [2022-11-03 01:45:47,268 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_open_volume [2022-11-03 01:45:47,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_open_volume [2022-11-03 01:45:47,268 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_check_pattern [2022-11-03 01:45:47,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_check_pattern [2022-11-03 01:45:47,268 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2022-11-03 01:45:47,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2022-11-03 01:45:47,269 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_eba_write_leb [2022-11-03 01:45:47,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_eba_write_leb [2022-11-03 01:45:47,269 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-11-03 01:45:47,269 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-11-03 01:45:47,269 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 01:45:47,269 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 01:45:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:45:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_put_device [2022-11-03 01:45:47,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_put_device [2022-11-03 01:45:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure assign_aeb_to_av [2022-11-03 01:45:47,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assign_aeb_to_av [2022-11-03 01:45:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 01:45:47,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 01:45:47,271 INFO L130 BoogieDeclarations]: Found specification of procedure clear_update_marker [2022-11-03 01:45:47,271 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_update_marker [2022-11-03 01:45:47,271 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2022-11-03 01:45:47,271 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2022-11-03 01:45:47,271 INFO L130 BoogieDeclarations]: Found specification of procedure scan_peb [2022-11-03 01:45:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_peb [2022-11-03 01:45:47,272 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-11-03 01:45:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-11-03 01:45:47,272 INFO L130 BoogieDeclarations]: Found specification of procedure validate_vid_hdr___0 [2022-11-03 01:45:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_vid_hdr___0 [2022-11-03 01:45:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:45:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 01:45:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 01:45:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_self_check_all_ff [2022-11-03 01:45:47,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_self_check_all_ff [2022-11-03 01:45:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2022-11-03 01:45:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2022-11-03 01:45:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2022-11-03 01:45:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2022-11-03 01:45:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_close_volume [2022-11-03 01:45:47,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_close_volume [2022-11-03 01:45:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_put_peb [2022-11-03 01:45:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_put_peb [2022-11-03 01:45:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 01:45:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 01:45:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-03 01:45:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-03 01:45:47,275 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:45:47,276 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:45:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 01:45:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 01:45:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_wear_leveling [2022-11-03 01:45:47,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_wear_leveling [2022-11-03 01:45:47,280 INFO L130 BoogieDeclarations]: Found specification of procedure leb_read_unlock [2022-11-03 01:45:47,281 INFO L138 BoogieDeclarations]: Found implementation of procedure leb_read_unlock [2022-11-03 01:45:47,281 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_next_sqnum [2022-11-03 01:45:47,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_next_sqnum [2022-11-03 01:45:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-03 01:45:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ubi_devices_mutex [2022-11-03 01:45:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 01:45:47,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 01:45:47,282 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_read_ec_hdr [2022-11-03 01:45:47,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_read_ec_hdr [2022-11-03 01:45:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_add_entry [2022-11-03 01:45:47,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_add_entry [2022-11-03 01:45:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure volume_sysfs_close [2022-11-03 01:45:47,283 INFO L138 BoogieDeclarations]: Found implementation of procedure volume_sysfs_close [2022-11-03 01:45:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure revoke_exclusive [2022-11-03 01:45:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure revoke_exclusive [2022-11-03 01:45:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure return_unused_pool_pebs [2022-11-03 01:45:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure return_unused_pool_pebs [2022-11-03 01:45:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:45:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:45:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dump_vtbl_record [2022-11-03 01:45:47,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dump_vtbl_record [2022-11-03 01:45:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure erase_worker [2022-11-03 01:45:47,285 INFO L138 BoogieDeclarations]: Found implementation of procedure erase_worker [2022-11-03 01:45:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure do_sync_erase [2022-11-03 01:45:47,285 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sync_erase [2022-11-03 01:45:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_add_to_av [2022-11-03 01:45:47,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_add_to_av [2022-11-03 01:45:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2022-11-03 01:45:47,286 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2022-11-03 01:45:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-03 01:45:47,286 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-03 01:45:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:45:47,287 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:45:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-03 01:45:47,287 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-03 01:45:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:45:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2022-11-03 01:45:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2022-11-03 01:45:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_remove_volume [2022-11-03 01:45:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_remove_volume [2022-11-03 01:45:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:45:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:45:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ltree_lookup [2022-11-03 01:45:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ltree_lookup [2022-11-03 01:45:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2022-11-03 01:45:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2022-11-03 01:45:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 01:45:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 01:45:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 01:45:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 01:45:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_wl_flush [2022-11-03 01:45:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_wl_flush [2022-11-03 01:45:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_list [2022-11-03 01:45:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_list [2022-11-03 01:45:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure self_check_volumes [2022-11-03 01:45:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure self_check_volumes [2022-11-03 01:45:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure kill_volumes [2022-11-03 01:45:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_volumes [2022-11-03 01:45:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_dbg_is_bgt_disabled [2022-11-03 01:45:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_dbg_is_bgt_disabled [2022-11-03 01:45:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_notify_all [2022-11-03 01:45:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_notify_all [2022-11-03 01:45:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 01:45:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 01:45:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write [2022-11-03 01:45:47,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write [2022-11-03 01:45:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure imajor [2022-11-03 01:45:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure imajor [2022-11-03 01:45:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure scan_pool [2022-11-03 01:45:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_pool [2022-11-03 01:45:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:45:47,293 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:45:47,293 INFO L130 BoogieDeclarations]: Found specification of procedure add_aeb [2022-11-03 01:45:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure add_aeb [2022-11-03 01:45:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2022-11-03 01:45:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2022-11-03 01:45:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure get_exclusive [2022-11-03 01:45:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure get_exclusive [2022-11-03 01:45:47,294 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_major2num [2022-11-03 01:45:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_major2num [2022-11-03 01:45:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_do_get_volume_info [2022-11-03 01:45:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_do_get_volume_info [2022-11-03 01:45:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-03 01:45:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fm_mutex_of_ubi_device [2022-11-03 01:45:47,295 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2022-11-03 01:45:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2022-11-03 01:45:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:45:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:45:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure tree_destroy [2022-11-03 01:45:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_destroy [2022-11-03 01:45:47,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure ubi_io_write_ec_hdr [2022-11-03 01:45:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ubi_io_write_ec_hdr [2022-11-03 01:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure find_anchor_wl_entry [2022-11-03 01:45:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure find_anchor_wl_entry [2022-11-03 01:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 01:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 01:45:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-03 01:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-03 01:45:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure wl_tree_add [2022-11-03 01:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure wl_tree_add [2022-11-03 01:45:49,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:49,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:51:43,598 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:51:48,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:51:48,593 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:51:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:48 BoogieIcfgContainer [2022-11-03 01:51:48,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:51:48,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:51:48,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:51:48,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:51:48,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:33" (1/3) ... [2022-11-03 01:51:48,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120aa014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:48, skipping insertion in model container [2022-11-03 01:51:48,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:44" (2/3) ... [2022-11-03 01:51:48,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@120aa014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:48, skipping insertion in model container [2022-11-03 01:51:48,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:48" (3/3) ... [2022-11-03 01:51:48,621 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--mtd--ubi--ubi.ko-ldv_main4.cil.out.i [2022-11-03 01:51:48,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:51:48,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:51:48,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:51:48,838 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c47d035, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:51:48,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:51:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) [2022-11-03 01:51:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:51:48,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:48,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:48,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:48,880 INFO L85 PathProgramCache]: Analyzing trace with hash 936932398, now seen corresponding path program 1 times [2022-11-03 01:51:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:48,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682831572] [2022-11-03 01:51:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:50,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682831572] [2022-11-03 01:51:50,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682831572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:50,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:50,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222657917] [2022-11-03 01:51:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:50,402 INFO L87 Difference]: Start difference. First operand has 6897 states, 4210 states have (on average 1.354394299287411) internal successors, (5702), 4459 states have internal predecessors, (5702), 2459 states have call successors, (2459), 226 states have call predecessors, (2459), 226 states have return successors, (2459), 2409 states have call predecessors, (2459), 2459 states have call successors, (2459) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:51:53,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:01,485 INFO L93 Difference]: Finished difference Result 16272 states and 25136 transitions. [2022-11-03 01:52:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-03 01:52:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:01,597 INFO L225 Difference]: With dead ends: 16272 [2022-11-03 01:52:01,597 INFO L226 Difference]: Without dead ends: 9373 [2022-11-03 01:52:01,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:01,670 INFO L413 NwaCegarLoop]: 11051 mSDtfsCounter, 10479 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10481 SdHoareTripleChecker+Valid, 14692 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:01,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10481 Valid, 14692 Invalid, 746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 743 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 01:52:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2022-11-03 01:52:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9365. [2022-11-03 01:52:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 5676 states have (on average 1.3428470754052149) internal successors, (7622), 6028 states have internal predecessors, (7622), 3345 states have call successors, (3345), 345 states have call predecessors, (3345), 343 states have return successors, (3320), 3245 states have call predecessors, (3320), 3320 states have call successors, (3320) [2022-11-03 01:52:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 14287 transitions. [2022-11-03 01:52:02,852 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 14287 transitions. Word has length 10 [2022-11-03 01:52:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:02,853 INFO L495 AbstractCegarLoop]: Abstraction has 9365 states and 14287 transitions. [2022-11-03 01:52:02,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 14287 transitions. [2022-11-03 01:52:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:52:02,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:02,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:02,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:52:02,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1024824668, now seen corresponding path program 1 times [2022-11-03 01:52:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:02,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236039519] [2022-11-03 01:52:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:03,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:03,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236039519] [2022-11-03 01:52:03,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236039519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:03,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:03,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884136345] [2022-11-03 01:52:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:03,654 INFO L87 Difference]: Start difference. First operand 9365 states and 14287 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:06,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:10,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:14,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:20,082 INFO L93 Difference]: Finished difference Result 18319 states and 28033 transitions. [2022-11-03 01:52:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:52:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:20,244 INFO L225 Difference]: With dead ends: 18319 [2022-11-03 01:52:20,244 INFO L226 Difference]: Without dead ends: 18315 [2022-11-03 01:52:20,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:20,265 INFO L413 NwaCegarLoop]: 12584 mSDtfsCounter, 10323 mSDsluCounter, 10482 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10323 SdHoareTripleChecker+Valid, 22515 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:20,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10323 Valid, 22515 Invalid, 1133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1128 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 01:52:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18315 states. [2022-11-03 01:52:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18315 to 18298. [2022-11-03 01:52:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18298 states, 11108 states have (on average 1.3429960388908895) internal successors, (14918), 11788 states have internal predecessors, (14918), 6512 states have call successors, (6512), 682 states have call predecessors, (6512), 677 states have return successors, (6581), 6328 states have call predecessors, (6581), 6486 states have call successors, (6581) [2022-11-03 01:52:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18298 states to 18298 states and 28011 transitions. [2022-11-03 01:52:21,913 INFO L78 Accepts]: Start accepts. Automaton has 18298 states and 28011 transitions. Word has length 11 [2022-11-03 01:52:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:21,913 INFO L495 AbstractCegarLoop]: Abstraction has 18298 states and 28011 transitions. [2022-11-03 01:52:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 18298 states and 28011 transitions. [2022-11-03 01:52:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:52:21,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:21,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:52:21,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1709746703, now seen corresponding path program 1 times [2022-11-03 01:52:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729708135] [2022-11-03 01:52:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:22,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729708135] [2022-11-03 01:52:22,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729708135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:22,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:22,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406943355] [2022-11-03 01:52:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:22,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:22,608 INFO L87 Difference]: Start difference. First operand 18298 states and 28011 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:28,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:35,890 INFO L93 Difference]: Finished difference Result 28459 states and 43548 transitions. [2022-11-03 01:52:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-03 01:52:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:36,069 INFO L225 Difference]: With dead ends: 28459 [2022-11-03 01:52:36,069 INFO L226 Difference]: Without dead ends: 28455 [2022-11-03 01:52:36,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:36,099 INFO L413 NwaCegarLoop]: 12914 mSDtfsCounter, 10499 mSDsluCounter, 8012 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10501 SdHoareTripleChecker+Valid, 20501 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:36,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10501 Valid, 20501 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1072 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 01:52:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28455 states. [2022-11-03 01:52:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28455 to 28440. [2022-11-03 01:52:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28440 states, 17289 states have (on average 1.3440337787032217) internal successors, (23237), 18311 states have internal predecessors, (23237), 10087 states have call successors, (10087), 1068 states have call predecessors, (10087), 1063 states have return successors, (10201), 9827 states have call predecessors, (10201), 10063 states have call successors, (10201) [2022-11-03 01:52:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28440 states to 28440 states and 43525 transitions. [2022-11-03 01:52:38,762 INFO L78 Accepts]: Start accepts. Automaton has 28440 states and 43525 transitions. Word has length 12 [2022-11-03 01:52:38,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:38,762 INFO L495 AbstractCegarLoop]: Abstraction has 28440 states and 43525 transitions. [2022-11-03 01:52:38,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 28440 states and 43525 transitions. [2022-11-03 01:52:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:52:38,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:38,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:52:38,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1467488441, now seen corresponding path program 1 times [2022-11-03 01:52:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123415920] [2022-11-03 01:52:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:39,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:39,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123415920] [2022-11-03 01:52:39,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123415920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:39,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:39,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208911753] [2022-11-03 01:52:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:39,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:39,447 INFO L87 Difference]: Start difference. First operand 28440 states and 43525 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:52:42,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:46,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:49,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:56,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:57,761 INFO L93 Difference]: Finished difference Result 46451 states and 70860 transitions. [2022-11-03 01:52:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 01:52:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:58,027 INFO L225 Difference]: With dead ends: 46451 [2022-11-03 01:52:58,027 INFO L226 Difference]: Without dead ends: 46447 [2022-11-03 01:52:58,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:58,057 INFO L413 NwaCegarLoop]: 13215 mSDtfsCounter, 9258 mSDsluCounter, 10472 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9259 SdHoareTripleChecker+Valid, 23140 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:58,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9259 Valid, 23140 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1196 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2022-11-03 01:52:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46447 states. [2022-11-03 01:53:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46447 to 46421. [2022-11-03 01:53:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46421 states, 28182 states have (on average 1.3427010148321623) internal successors, (37840), 29902 states have internal predecessors, (37840), 16385 states have call successors, (16385), 1867 states have call predecessors, (16385), 1853 states have return successors, (16604), 15939 states have call predecessors, (16604), 16359 states have call successors, (16604) [2022-11-03 01:53:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46421 states to 46421 states and 70829 transitions. [2022-11-03 01:53:02,479 INFO L78 Accepts]: Start accepts. Automaton has 46421 states and 70829 transitions. Word has length 13 [2022-11-03 01:53:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:02,480 INFO L495 AbstractCegarLoop]: Abstraction has 46421 states and 70829 transitions. [2022-11-03 01:53:02,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 46421 states and 70829 transitions. [2022-11-03 01:53:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:53:02,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:02,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:53:02,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1747555252, now seen corresponding path program 1 times [2022-11-03 01:53:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:02,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994311108] [2022-11-03 01:53:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:03,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994311108] [2022-11-03 01:53:03,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994311108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:03,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931140062] [2022-11-03 01:53:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:03,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:03,377 INFO L87 Difference]: Start difference. First operand 46421 states and 70829 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:05,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:10,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:15,060 INFO L93 Difference]: Finished difference Result 60335 states and 91146 transitions. [2022-11-03 01:53:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:15,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-03 01:53:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:15,597 INFO L225 Difference]: With dead ends: 60335 [2022-11-03 01:53:15,597 INFO L226 Difference]: Without dead ends: 60331 [2022-11-03 01:53:15,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:15,635 INFO L413 NwaCegarLoop]: 10940 mSDtfsCounter, 8940 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8940 SdHoareTripleChecker+Valid, 15127 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:15,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8940 Valid, 15127 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 01:53:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60331 states. [2022-11-03 01:53:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60331 to 60325. [2022-11-03 01:53:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60325 states, 36460 states have (on average 1.3366428963247394) internal successors, (48734), 38797 states have internal predecessors, (48734), 21077 states have call successors, (21077), 2804 states have call predecessors, (21077), 2787 states have return successors, (21316), 20444 states have call predecessors, (21316), 21053 states have call successors, (21316) [2022-11-03 01:53:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60325 states to 60325 states and 91127 transitions. [2022-11-03 01:53:20,058 INFO L78 Accepts]: Start accepts. Automaton has 60325 states and 91127 transitions. Word has length 14 [2022-11-03 01:53:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:20,059 INFO L495 AbstractCegarLoop]: Abstraction has 60325 states and 91127 transitions. [2022-11-03 01:53:20,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 60325 states and 91127 transitions. [2022-11-03 01:53:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:53:20,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:20,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:20,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:53:20,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1665300502, now seen corresponding path program 1 times [2022-11-03 01:53:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:20,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661384932] [2022-11-03 01:53:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:21,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:21,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661384932] [2022-11-03 01:53:21,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661384932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:21,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:21,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114480459] [2022-11-03 01:53:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:21,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:21,003 INFO L87 Difference]: Start difference. First operand 60325 states and 91127 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:23,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:28,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:32,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:33,570 INFO L93 Difference]: Finished difference Result 69554 states and 104828 transitions. [2022-11-03 01:53:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:33,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-03 01:53:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:33,844 INFO L225 Difference]: With dead ends: 69554 [2022-11-03 01:53:33,845 INFO L226 Difference]: Without dead ends: 69550 [2022-11-03 01:53:33,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:33,875 INFO L413 NwaCegarLoop]: 11793 mSDtfsCounter, 10518 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10518 SdHoareTripleChecker+Valid, 15192 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:33,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10518 Valid, 15192 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 01:53:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69550 states. [2022-11-03 01:53:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69550 to 69543. [2022-11-03 01:53:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69543 states, 41928 states have (on average 1.3329278763594734) internal successors, (55887), 44655 states have internal predecessors, (55887), 24331 states have call successors, (24331), 3302 states have call predecessors, (24331), 3283 states have return successors, (24596), 23600 states have call predecessors, (24596), 24309 states have call successors, (24596) [2022-11-03 01:53:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69543 states to 69543 states and 104814 transitions. [2022-11-03 01:53:38,632 INFO L78 Accepts]: Start accepts. Automaton has 69543 states and 104814 transitions. Word has length 15 [2022-11-03 01:53:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:38,632 INFO L495 AbstractCegarLoop]: Abstraction has 69543 states and 104814 transitions. [2022-11-03 01:53:38,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 69543 states and 104814 transitions. [2022-11-03 01:53:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:53:38,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:38,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:53:38,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -89641609, now seen corresponding path program 1 times [2022-11-03 01:53:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276485806] [2022-11-03 01:53:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:39,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:39,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276485806] [2022-11-03 01:53:39,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276485806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:39,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:39,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:39,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372424541] [2022-11-03 01:53:39,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:39,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:39,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:39,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:39,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:39,306 INFO L87 Difference]: Start difference. First operand 69543 states and 104814 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:41,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:45,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:53:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:50,188 INFO L93 Difference]: Finished difference Result 69545 states and 104815 transitions. [2022-11-03 01:53:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:53:50,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 01:53:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:50,465 INFO L225 Difference]: With dead ends: 69545 [2022-11-03 01:53:50,466 INFO L226 Difference]: Without dead ends: 69542 [2022-11-03 01:53:50,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:50,495 INFO L413 NwaCegarLoop]: 10007 mSDtfsCounter, 10554 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10554 SdHoareTripleChecker+Valid, 10008 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:50,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10554 Valid, 10008 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 01:53:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69542 states. [2022-11-03 01:53:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69542 to 69542. [2022-11-03 01:53:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69542 states, 41928 states have (on average 1.3329040259492464) internal successors, (55886), 44654 states have internal predecessors, (55886), 24330 states have call successors, (24330), 3302 states have call predecessors, (24330), 3283 states have return successors, (24596), 23600 states have call predecessors, (24596), 24309 states have call successors, (24596) [2022-11-03 01:53:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69542 states to 69542 states and 104812 transitions. [2022-11-03 01:53:55,058 INFO L78 Accepts]: Start accepts. Automaton has 69542 states and 104812 transitions. Word has length 16 [2022-11-03 01:53:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:53:55,058 INFO L495 AbstractCegarLoop]: Abstraction has 69542 states and 104812 transitions. [2022-11-03 01:53:55,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:53:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 69542 states and 104812 transitions. [2022-11-03 01:53:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:53:55,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:53:55,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:53:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:53:55,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:53:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:53:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1511148685, now seen corresponding path program 1 times [2022-11-03 01:53:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:53:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694954863] [2022-11-03 01:53:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:53:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:53:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:53:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:53:55,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:53:55,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694954863] [2022-11-03 01:53:55,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694954863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:55,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:53:55,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:53:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100378735] [2022-11-03 01:53:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:53:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:53:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:53:55,994 INFO L87 Difference]: Start difference. First operand 69542 states and 104812 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:54:01,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []