./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37440c69f444d214751d1c949a02dfc2bef21892 .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 03:22:45,492 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 03:22:45,493 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 03:22:45,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 03:22:45,501 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 03:22:45,502 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 03:22:45,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 03:22:45,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 03:22:45,505 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 03:22:45,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 03:22:45,506 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 03:22:45,506 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 03:22:45,507 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 03:22:45,507 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 03:22:45,508 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 03:22:45,509 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 03:22:45,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 03:22:45,510 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 03:22:45,512 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 03:22:45,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 03:22:45,514 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 03:22:45,514 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 03:22:45,516 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 03:22:45,516 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 03:22:45,516 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 03:22:45,517 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 03:22:45,517 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 03:22:45,518 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 03:22:45,519 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 03:22:45,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 03:22:45,519 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 03:22:45,520 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 03:22:45,520 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 03:22:45,520 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 03:22:45,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 03:22:45,521 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 03:22:45,521 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 03:22:45,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 03:22:45,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 03:22:45,531 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 03:22:45,531 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 03:22:45,532 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 03:22:45,532 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 03:22:45,532 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 03:22:45,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 03:22:45,532 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 03:22:45,532 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 03:22:45,532 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 03:22:45,533 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 03:22:45,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 03:22:45,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 03:22:45,534 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 03:22:45,535 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 03:22:45,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 03:22:45,535 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37440c69f444d214751d1c949a02dfc2bef21892 [2018-11-23 03:22:45,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 03:22:45,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 03:22:45,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 03:22:45,565 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 03:22:45,566 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 03:22:45,566 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-23 03:22:45,601 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/data/80e45514e/20bff4da131649688df3fa7c8a1d0afa/FLAG69a5f56e1 [2018-11-23 03:22:46,034 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 03:22:46,034 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/sv-benchmarks/c/list-simple/dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-23 03:22:46,043 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/data/80e45514e/20bff4da131649688df3fa7c8a1d0afa/FLAG69a5f56e1 [2018-11-23 03:22:46,053 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/data/80e45514e/20bff4da131649688df3fa7c8a1d0afa [2018-11-23 03:22:46,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 03:22:46,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 03:22:46,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 03:22:46,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 03:22:46,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 03:22:46,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667e4ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46, skipping insertion in model container [2018-11-23 03:22:46,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 03:22:46,095 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 03:22:46,281 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:22:46,288 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 03:22:46,368 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 03:22:46,401 INFO L195 MainTranslator]: Completed translation [2018-11-23 03:22:46,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46 WrapperNode [2018-11-23 03:22:46,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 03:22:46,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 03:22:46,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 03:22:46,402 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 03:22:46,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 03:22:46,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 03:22:46,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 03:22:46,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 03:22:46,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... [2018-11-23 03:22:46,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 03:22:46,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 03:22:46,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 03:22:46,445 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 03:22:46,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 03:22:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-23 03:22:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-23 03:22:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 03:22:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 03:22:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2018-11-23 03:22:46,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2018-11-23 03:22:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-23 03:22:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-23 03:22:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 03:22:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2018-11-23 03:22:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2018-11-23 03:22:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 03:22:46,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 03:22:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 03:22:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 03:22:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 03:22:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 03:22:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 03:22:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-23 03:22:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-23 03:22:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 03:22:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 03:22:46,745 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 03:22:46,745 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 03:22:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:46 BoogieIcfgContainer [2018-11-23 03:22:46,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 03:22:46,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 03:22:46,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 03:22:46,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 03:22:46,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:46" (1/3) ... [2018-11-23 03:22:46,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6815dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:46, skipping insertion in model container [2018-11-23 03:22:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:46" (2/3) ... [2018-11-23 03:22:46,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6815dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:46, skipping insertion in model container [2018-11-23 03:22:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:46" (3/3) ... [2018-11-23 03:22:46,751 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse_true-unreach-call_true-valid-memsafety.i [2018-11-23 03:22:46,759 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 03:22:46,764 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 03:22:46,773 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 03:22:46,790 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 03:22:46,791 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 03:22:46,791 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 03:22:46,791 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 03:22:46,791 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 03:22:46,791 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 03:22:46,791 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 03:22:46,791 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 03:22:46,791 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 03:22:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-11-23 03:22:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 03:22:46,811 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 03:22:46,812 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 03:22:46,813 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 03:22:46,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 03:22:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash -529366065, now seen corresponding path program 1 times [2018-11-23 03:22:46,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 03:22:46,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 03:22:46,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:22:46,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 03:22:46,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 03:22:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 03:22:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 03:22:46,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 03:22:46,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 03:22:46,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 03:22:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 03:22:46,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 03:22:46,959 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2018-11-23 03:22:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 03:22:47,008 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2018-11-23 03:22:47,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 03:22:47,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-23 03:22:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 03:22:47,015 INFO L225 Difference]: With dead ends: 78 [2018-11-23 03:22:47,016 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 03:22:47,018 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 03:22:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 03:22:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 03:22:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 03:22:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 03:22:47,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-23 03:22:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 03:22:47,040 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 03:22:47,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 03:22:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 03:22:47,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 03:22:47,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 03:22:47,084 INFO L451 ceAbstractionStarter]: At program point L607-2(lines 607 610) the Hoare annotation is: true [2018-11-23 03:22:47,084 INFO L448 ceAbstractionStarter]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2018-11-23 03:22:47,084 INFO L451 ceAbstractionStarter]: At program point dll_update_atENTRY(lines 606 612) the Hoare annotation is: true [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point dll_update_atEXIT(lines 606 612) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point dll_update_atFINAL(lines 606 612) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point exitEXIT(lines 561 563) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L451 ceAbstractionStarter]: At program point exitENTRY(lines 561 563) the Hoare annotation is: true [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point exitFINAL(lines 561 563) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L451 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L448 ceAbstractionStarter]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2018-11-23 03:22:47,085 INFO L451 ceAbstractionStarter]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: true [2018-11-23 03:22:47,086 INFO L451 ceAbstractionStarter]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L451 ceAbstractionStarter]: At program point L579(line 579) the Hoare annotation is: true [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point L584(lines 584 586) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point L578(lines 578 580) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 03:22:47,086 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 03:22:47,086 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 03:22:47,086 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L451 ceAbstractionStarter]: At program point L600-2(lines 600 603) the Hoare annotation is: true [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point dll_get_data_atFINAL(lines 599 605) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L451 ceAbstractionStarter]: At program point dll_get_data_atENTRY(lines 599 605) the Hoare annotation is: true [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point dll_get_data_atEXIT(lines 599 605) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 613 632) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L444 ceAbstractionStarter]: At program point L624(line 624) the Hoare annotation is: false [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point L624-1(line 624) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point L624-2(lines 624 626) no Hoare annotation was computed. [2018-11-23 03:22:47,087 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 613 632) no Hoare annotation was computed. [2018-11-23 03:22:47,088 INFO L444 ceAbstractionStarter]: At program point L620(line 620) the Hoare annotation is: (<= 2 main_~len~0) [2018-11-23 03:22:47,088 INFO L448 ceAbstractionStarter]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2018-11-23 03:22:47,088 INFO L448 ceAbstractionStarter]: For program point L620-1(lines 618 621) no Hoare annotation was computed. [2018-11-23 03:22:47,088 INFO L444 ceAbstractionStarter]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 1 main_~i~0) (<= 2 main_~len~0)) [2018-11-23 03:22:47,088 INFO L444 ceAbstractionStarter]: At program point L622-4(lines 622 627) the Hoare annotation is: (and (<= 1 main_~i~0) (<= 2 main_~len~0)) [2018-11-23 03:22:47,088 INFO L444 ceAbstractionStarter]: At program point L616(line 616) the Hoare annotation is: (<= 2 main_~len~0) [2018-11-23 03:22:47,088 INFO L444 ceAbstractionStarter]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 main_~len~0) [2018-11-23 03:22:47,088 INFO L448 ceAbstractionStarter]: For program point L616-1(line 616) no Hoare annotation was computed. [2018-11-23 03:22:47,088 INFO L448 ceAbstractionStarter]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2018-11-23 03:22:47,089 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 613 632) the Hoare annotation is: true [2018-11-23 03:22:47,089 INFO L444 ceAbstractionStarter]: At program point L625(lines 613 632) the Hoare annotation is: false [2018-11-23 03:22:47,089 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2018-11-23 03:22:47,089 INFO L448 ceAbstractionStarter]: For program point dll_destroyEXIT(lines 592 598) no Hoare annotation was computed. [2018-11-23 03:22:47,089 INFO L451 ceAbstractionStarter]: At program point dll_destroyENTRY(lines 592 598) the Hoare annotation is: true [2018-11-23 03:22:47,089 INFO L451 ceAbstractionStarter]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2018-11-23 03:22:47,089 INFO L448 ceAbstractionStarter]: For program point L593-3(lines 592 598) no Hoare annotation was computed. [2018-11-23 03:22:47,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:22:47 BoogieIcfgContainer [2018-11-23 03:22:47,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 03:22:47,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 03:22:47,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 03:22:47,099 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 03:22:47,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:46" (3/4) ... [2018-11-23 03:22:47,102 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dll_update_at [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure exit [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dll_create [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dll_get_data_at [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 03:22:47,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dll_destroy [2018-11-23 03:22:47,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-23 03:22:47,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 03:22:47,110 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 03:22:47,146 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3057627c-1f67-4662-b996-1973ee2f5244/bin-2019/uautomizer/witness.graphml [2018-11-23 03:22:47,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 03:22:47,147 INFO L168 Benchmark]: Toolchain (without parser) took 1091.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.1 MB in the beginning and 1.0 GB in the end (delta: -80.0 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,148 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 03:22:47,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 03:22:47,148 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,149 INFO L168 Benchmark]: RCFGBuilder took 300.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,149 INFO L168 Benchmark]: TraceAbstraction took 352.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,149 INFO L168 Benchmark]: Witness Printer took 47.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 03:22:47,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 300.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 352.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 <= i && 2 <= len - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 53 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 13 SDslu, 69 SDs, 0 SdLazy, 8 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 28 PreInvPairs, 34 NumberOfFragments, 40 HoareAnnotationTreeSize, 28 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...