12.80/8.57 YES 12.80/8.57 12.80/8.57 Ultimate: Cannot open display: 12.80/8.57 This is Ultimate 0.1.24-8dc7c08-m 12.80/8.57 [2019-03-28 12:00:02,746 INFO L170 SettingsManager]: Resetting all preferences to default values... 12.80/8.57 [2019-03-28 12:00:02,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 12.80/8.57 [2019-03-28 12:00:02,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 12.80/8.57 [2019-03-28 12:00:02,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 12.80/8.57 [2019-03-28 12:00:02,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 12.80/8.57 [2019-03-28 12:00:02,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 12.80/8.57 [2019-03-28 12:00:02,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 12.80/8.57 [2019-03-28 12:00:02,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 12.80/8.57 [2019-03-28 12:00:02,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 12.80/8.57 [2019-03-28 12:00:02,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 12.80/8.57 [2019-03-28 12:00:02,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 12.80/8.57 [2019-03-28 12:00:02,771 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 12.80/8.57 [2019-03-28 12:00:02,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 12.80/8.57 [2019-03-28 12:00:02,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 12.80/8.57 [2019-03-28 12:00:02,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 12.80/8.57 [2019-03-28 12:00:02,776 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 12.80/8.57 [2019-03-28 12:00:02,778 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 12.80/8.57 [2019-03-28 12:00:02,778 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 12.80/8.57 [2019-03-28 12:00:02,780 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 12.80/8.57 [2019-03-28 12:00:02,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 12.80/8.57 [2019-03-28 12:00:02,783 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 12.80/8.57 [2019-03-28 12:00:02,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 12.80/8.57 [2019-03-28 12:00:02,784 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 12.80/8.57 [2019-03-28 12:00:02,785 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 12.80/8.57 [2019-03-28 12:00:02,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 12.80/8.57 [2019-03-28 12:00:02,786 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 12.80/8.57 [2019-03-28 12:00:02,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,788 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 12.80/8.57 [2019-03-28 12:00:02,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,788 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 12.80/8.57 [2019-03-28 12:00:02,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 12.80/8.57 [2019-03-28 12:00:02,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 12.80/8.57 [2019-03-28 12:00:02,790 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 12.80/8.57 [2019-03-28 12:00:02,790 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf 12.80/8.57 [2019-03-28 12:00:02,805 INFO L110 SettingsManager]: Loading preferences was successful 12.80/8.57 [2019-03-28 12:00:02,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 12.80/8.57 [2019-03-28 12:00:02,806 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 12.80/8.57 [2019-03-28 12:00:02,807 INFO L133 SettingsManager]: * Rewrite not-equals=true 12.80/8.57 [2019-03-28 12:00:02,807 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 12.80/8.57 [2019-03-28 12:00:02,807 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 12.80/8.57 [2019-03-28 12:00:02,807 INFO L133 SettingsManager]: * Use SBE=true 12.80/8.57 [2019-03-28 12:00:02,807 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 12.80/8.57 [2019-03-28 12:00:02,808 INFO L133 SettingsManager]: * Use old map elimination=false 12.80/8.57 [2019-03-28 12:00:02,808 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 12.80/8.57 [2019-03-28 12:00:02,808 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 12.80/8.57 [2019-03-28 12:00:02,808 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 12.80/8.57 [2019-03-28 12:00:02,808 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 12.80/8.57 [2019-03-28 12:00:02,809 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 12.80/8.57 [2019-03-28 12:00:02,809 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 12.80/8.57 [2019-03-28 12:00:02,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 12.80/8.57 [2019-03-28 12:00:02,809 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 12.80/8.57 [2019-03-28 12:00:02,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE 12.80/8.57 [2019-03-28 12:00:02,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 12.80/8.57 [2019-03-28 12:00:02,810 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 12.80/8.57 [2019-03-28 12:00:02,810 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 12.80/8.57 [2019-03-28 12:00:02,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 12.80/8.57 [2019-03-28 12:00:02,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 12.80/8.57 [2019-03-28 12:00:02,811 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 12.80/8.57 [2019-03-28 12:00:02,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 12.80/8.57 [2019-03-28 12:00:02,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 12.80/8.57 [2019-03-28 12:00:02,811 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 12.80/8.57 [2019-03-28 12:00:02,811 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 12.80/8.57 [2019-03-28 12:00:02,812 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 12.80/8.57 [2019-03-28 12:00:02,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 12.80/8.57 [2019-03-28 12:00:02,855 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 12.80/8.57 [2019-03-28 12:00:02,859 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 12.80/8.57 [2019-03-28 12:00:02,860 INFO L271 PluginConnector]: Initializing CDTParser... 12.80/8.57 [2019-03-28 12:00:02,860 INFO L276 PluginConnector]: CDTParser initialized 12.80/8.57 [2019-03-28 12:00:02,861 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c 12.80/8.57 [2019-03-28 12:00:02,925 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/3ec118c275be4b55b3885998d24b9ce7/FLAG61be32a88 12.80/8.57 [2019-03-28 12:00:03,461 INFO L307 CDTParser]: Found 1 translation units. 12.80/8.57 [2019-03-28 12:00:03,461 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c 12.80/8.57 [2019-03-28 12:00:03,468 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/3ec118c275be4b55b3885998d24b9ce7/FLAG61be32a88 12.80/8.57 [2019-03-28 12:00:03,862 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/3ec118c275be4b55b3885998d24b9ce7 12.80/8.57 [2019-03-28 12:00:03,873 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 12.80/8.57 [2019-03-28 12:00:03,875 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 12.80/8.57 [2019-03-28 12:00:03,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 12.80/8.57 [2019-03-28 12:00:03,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 12.80/8.57 [2019-03-28 12:00:03,880 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 12.80/8.57 [2019-03-28 12:00:03,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:00:03" (1/1) ... 12.80/8.57 [2019-03-28 12:00:03,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3787442e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:03, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:03,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:00:03" (1/1) ... 12.80/8.57 [2019-03-28 12:00:03,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 12.80/8.57 [2019-03-28 12:00:03,909 INFO L176 MainTranslator]: Built tables and reachable declarations 12.80/8.57 [2019-03-28 12:00:04,068 INFO L206 PostProcessor]: Analyzing one entry point: main 12.80/8.57 [2019-03-28 12:00:04,073 INFO L191 MainTranslator]: Completed pre-run 12.80/8.57 [2019-03-28 12:00:04,087 INFO L206 PostProcessor]: Analyzing one entry point: main 12.80/8.57 [2019-03-28 12:00:04,102 INFO L195 MainTranslator]: Completed translation 12.80/8.57 [2019-03-28 12:00:04,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04 WrapperNode 12.80/8.57 [2019-03-28 12:00:04,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 12.80/8.57 [2019-03-28 12:00:04,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 12.80/8.57 [2019-03-28 12:00:04,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 12.80/8.57 [2019-03-28 12:00:04,103 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 12.80/8.57 [2019-03-28 12:00:04,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 12.80/8.57 [2019-03-28 12:00:04,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 12.80/8.57 [2019-03-28 12:00:04,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 12.80/8.57 [2019-03-28 12:00:04,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized 12.80/8.57 [2019-03-28 12:00:04,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 12.80/8.57 [2019-03-28 12:00:04,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 12.80/8.57 [2019-03-28 12:00:04,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... 12.80/8.57 [2019-03-28 12:00:04,229 INFO L276 PluginConnector]: RCFGBuilder initialized 12.80/8.57 [2019-03-28 12:00:04,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (1/1) ... 12.80/8.57 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 12.80/8.57 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 12.80/8.57 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 12.80/8.57 [2019-03-28 12:00:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 12.80/8.57 [2019-03-28 12:00:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 12.80/8.57 [2019-03-28 12:00:04,412 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 12.80/8.57 [2019-03-28 12:00:04,413 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. 12.80/8.57 [2019-03-28 12:00:04,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:00:04 BoogieIcfgContainer 12.80/8.57 [2019-03-28 12:00:04,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 12.80/8.57 [2019-03-28 12:00:04,415 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 12.80/8.57 [2019-03-28 12:00:04,415 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 12.80/8.57 [2019-03-28 12:00:04,417 INFO L276 PluginConnector]: BlockEncodingV2 initialized 12.80/8.57 [2019-03-28 12:00:04,418 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:00:04" (1/1) ... 12.80/8.57 [2019-03-28 12:00:04,432 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges 12.80/8.57 [2019-03-28 12:00:04,434 INFO L258 BlockEncoder]: Using Remove infeasible edges 12.80/8.57 [2019-03-28 12:00:04,435 INFO L263 BlockEncoder]: Using Maximize final states 12.80/8.57 [2019-03-28 12:00:04,436 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 12.80/8.57 [2019-03-28 12:00:04,436 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 12.80/8.57 [2019-03-28 12:00:04,438 INFO L296 BlockEncoder]: Using Remove sink states 12.80/8.57 [2019-03-28 12:00:04,439 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 12.80/8.57 [2019-03-28 12:00:04,439 INFO L179 BlockEncoder]: Using Rewrite not-equals 12.80/8.57 [2019-03-28 12:00:04,454 INFO L185 BlockEncoder]: Using Use SBE 12.80/8.57 [2019-03-28 12:00:04,462 INFO L200 BlockEncoder]: SBE split 0 edges 12.80/8.57 [2019-03-28 12:00:04,466 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility 12.80/8.57 [2019-03-28 12:00:04,468 INFO L71 MaximizeFinalStates]: 0 new accepting states 12.80/8.57 [2019-03-28 12:00:04,478 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding 12.80/8.57 [2019-03-28 12:00:04,480 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states 12.80/8.57 [2019-03-28 12:00:04,482 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 12.80/8.57 [2019-03-28 12:00:04,482 INFO L71 MaximizeFinalStates]: 0 new accepting states 12.80/8.57 [2019-03-28 12:00:04,486 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding 12.80/8.57 [2019-03-28 12:00:04,486 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 12.80/8.57 [2019-03-28 12:00:04,487 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 12.80/8.57 [2019-03-28 12:00:04,487 INFO L71 MaximizeFinalStates]: 0 new accepting states 12.80/8.57 [2019-03-28 12:00:04,487 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 12.80/8.57 [2019-03-28 12:00:04,487 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 12.80/8.57 [2019-03-28 12:00:04,488 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges 12.80/8.57 [2019-03-28 12:00:04,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:00:04 BasicIcfg 12.80/8.57 [2019-03-28 12:00:04,488 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 12.80/8.57 [2019-03-28 12:00:04,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 12.80/8.57 [2019-03-28 12:00:04,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... 12.80/8.57 [2019-03-28 12:00:04,493 INFO L276 PluginConnector]: TraceAbstraction initialized 12.80/8.57 [2019-03-28 12:00:04,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:00:03" (1/4) ... 12.80/8.57 [2019-03-28 12:00:04,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51583f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (2/4) ... 12.80/8.57 [2019-03-28 12:00:04,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51583f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:00:04" (3/4) ... 12.80/8.57 [2019-03-28 12:00:04,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51583f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:00:04" (4/4) ... 12.80/8.57 [2019-03-28 12:00:04,497 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 12.80/8.57 [2019-03-28 12:00:04,506 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 12.80/8.57 [2019-03-28 12:00:04,513 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. 12.80/8.57 [2019-03-28 12:00:04,530 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. 12.80/8.57 [2019-03-28 12:00:04,559 INFO L133 ementStrategyFactory]: Using default assertion order modulation 12.80/8.57 [2019-03-28 12:00:04,560 INFO L382 AbstractCegarLoop]: Interprodecural is true 12.80/8.57 [2019-03-28 12:00:04,560 INFO L383 AbstractCegarLoop]: Hoare is true 12.80/8.57 [2019-03-28 12:00:04,560 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 12.80/8.57 [2019-03-28 12:00:04,560 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 12.80/8.57 [2019-03-28 12:00:04,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 12.80/8.57 [2019-03-28 12:00:04,561 INFO L387 AbstractCegarLoop]: Difference is false 12.80/8.57 [2019-03-28 12:00:04,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 12.80/8.57 [2019-03-28 12:00:04,561 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 12.80/8.57 [2019-03-28 12:00:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. 12.80/8.57 [2019-03-28 12:00:04,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. 12.80/8.57 [2019-03-28 12:00:04,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. 12.80/8.57 [2019-03-28 12:00:04,632 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. 12.80/8.57 [2019-03-28 12:00:04,633 INFO L451 ceAbstractionStarter]: At program point L23-2(lines 23 30) the Hoare annotation is: true 12.80/8.57 [2019-03-28 12:00:04,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:00:04 BasicIcfg 12.80/8.57 [2019-03-28 12:00:04,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- 12.80/8.57 [2019-03-28 12:00:04,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- 12.80/8.57 [2019-03-28 12:00:04,642 INFO L271 PluginConnector]: Initializing BuchiAutomizer... 12.80/8.57 [2019-03-28 12:00:04,645 INFO L276 PluginConnector]: BuchiAutomizer initialized 12.80/8.57 [2019-03-28 12:00:04,646 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis 12.80/8.57 [2019-03-28 12:00:04,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.03 12:00:03" (1/5) ... 12.80/8.57 [2019-03-28 12:00:04,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@719e8797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,647 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis 12.80/8.57 [2019-03-28 12:00:04,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:00:04" (2/5) ... 12.80/8.57 [2019-03-28 12:00:04,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@719e8797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,647 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis 12.80/8.57 [2019-03-28 12:00:04,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:00:04" (3/5) ... 12.80/8.57 [2019-03-28 12:00:04,648 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@719e8797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,648 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis 12.80/8.57 [2019-03-28 12:00:04,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:00:04" (4/5) ... 12.80/8.57 [2019-03-28 12:00:04,649 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@719e8797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.03 12:00:04, skipping insertion in model container 12.80/8.57 [2019-03-28 12:00:04,649 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis 12.80/8.57 [2019-03-28 12:00:04,649 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:00:04" (5/5) ... 12.80/8.57 [2019-03-28 12:00:04,650 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 12.80/8.57 [2019-03-28 12:00:04,678 INFO L133 ementStrategyFactory]: Using default assertion order modulation 12.80/8.57 [2019-03-28 12:00:04,678 INFO L374 BuchiCegarLoop]: Interprodecural is true 12.80/8.57 [2019-03-28 12:00:04,678 INFO L375 BuchiCegarLoop]: Hoare is true 12.80/8.57 [2019-03-28 12:00:04,679 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates 12.80/8.57 [2019-03-28 12:00:04,679 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE 12.80/8.57 [2019-03-28 12:00:04,679 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION 12.80/8.57 [2019-03-28 12:00:04,679 INFO L379 BuchiCegarLoop]: Difference is false 12.80/8.57 [2019-03-28 12:00:04,679 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA 12.80/8.57 [2019-03-28 12:00:04,679 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== 12.80/8.57 [2019-03-28 12:00:04,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. 12.80/8.57 [2019-03-28 12:00:04,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 12.80/8.57 [2019-03-28 12:00:04,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false 12.80/8.57 [2019-03-28 12:00:04,701 INFO L119 BuchiIsEmpty]: Starting construction of run 12.80/8.57 [2019-03-28 12:00:04,706 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] 12.80/8.57 [2019-03-28 12:00:04,706 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] 12.80/8.57 [2019-03-28 12:00:04,706 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ 12.80/8.57 [2019-03-28 12:00:04,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. 12.80/8.57 [2019-03-28 12:00:04,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 12.80/8.57 [2019-03-28 12:00:04,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false 12.80/8.57 [2019-03-28 12:00:04,707 INFO L119 BuchiIsEmpty]: Starting construction of run 12.80/8.57 [2019-03-28 12:00:04,707 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] 12.80/8.57 [2019-03-28 12:00:04,708 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] 12.80/8.57 [2019-03-28 12:00:04,713 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~old_y~0=v_ULTIMATE.start_main_~old_y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~old_y~0, ULTIMATE.start_main_~x~0] 3#L23-2true 12.80/8.57 [2019-03-28 12:00:04,713 INFO L796 eck$LassoCheckResult]: Loop: 3#L23-2true [36] L23-2-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~old_y~0_5 v_ULTIMATE.start_main_~y~0_9) (< 0 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_9) (<= (+ v_ULTIMATE.start_main_~old_y~0_5 v_ULTIMATE.start_main_~y~0_8) 0)) InVars {ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~old_y~0=v_ULTIMATE.start_main_~old_y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~old_y~0, ULTIMATE.start_main_~x~0] 3#L23-2true 12.80/8.57 [2019-03-28 12:00:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.80/8.57 [2019-03-28 12:00:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times 12.80/8.57 [2019-03-28 12:00:04,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.80/8.57 [2019-03-28 12:00:04,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.80/8.57 [2019-03-28 12:00:04,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.80/8.57 [2019-03-28 12:00:04,785 INFO L82 PathProgramCache]: Analyzing trace with hash 67, now seen corresponding path program 1 times 12.80/8.57 [2019-03-28 12:00:04,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.80/8.57 [2019-03-28 12:00:04,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.80/8.57 [2019-03-28 12:00:04,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.80/8.57 [2019-03-28 12:00:04,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1834, now seen corresponding path program 1 times 12.80/8.57 [2019-03-28 12:00:04,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.80/8.57 [2019-03-28 12:00:04,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.80/8.57 [2019-03-28 12:00:04,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.80/8.57 [2019-03-28 12:00:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.80/8.57 [2019-03-28 12:00:04,881 INFO L216 LassoAnalysis]: Preferences: 12.80/8.57 [2019-03-28 12:00:04,882 INFO L124 ssoRankerPreferences]: Compute integeral hull: false 12.80/8.57 [2019-03-28 12:00:04,882 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true 12.80/8.57 [2019-03-28 12:00:04,882 INFO L126 ssoRankerPreferences]: Term annotations enabled: false 12.80/8.57 [2019-03-28 12:00:04,883 INFO L127 ssoRankerPreferences]: Use exernal solver: true 12.80/8.57 [2019-03-28 12:00:04,883 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 12.80/8.57 [2019-03-28 12:00:04,883 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false 12.80/8.57 [2019-03-28 12:00:04,883 INFO L130 ssoRankerPreferences]: Path of dumped script: 12.80/8.57 [2019-03-28 12:00:04,883 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop 12.80/8.57 [2019-03-28 12:00:04,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank 12.80/8.57 [2019-03-28 12:00:04,884 INFO L282 LassoAnalysis]: Starting lasso preprocessing... 12.80/8.57 [2019-03-28 12:00:04,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true 12.80/8.57 [2019-03-28 12:00:04,982 INFO L300 LassoAnalysis]: Preprocessing complete. 12.80/8.57 [2019-03-28 12:00:04,983 INFO L412 LassoAnalysis]: Checking for nontermination... 12.80/8.57 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 12.80/8.57 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) 12.80/8.57 Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 12.80/8.57 [2019-03-28 12:00:04,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true 12.80/8.57 [2019-03-28 12:00:04,992 INFO L163 nArgumentSynthesizer]: Using integer mode. 12.80/8.57 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 12.80/8.57 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) 12.80/8.57 Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 12.80/8.57 [2019-03-28 12:00:05,032 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true 12.80/8.57 [2019-03-28 12:00:05,032 INFO L163 nArgumentSynthesizer]: Using integer mode. 12.80/8.57 [2019-03-28 12:00:05,229 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. 12.80/8.57 [2019-03-28 12:00:05,232 INFO L216 LassoAnalysis]: Preferences: 12.80/8.57 [2019-03-28 12:00:05,232 INFO L124 ssoRankerPreferences]: Compute integeral hull: false 12.80/8.57 [2019-03-28 12:00:05,232 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true 12.80/8.57 [2019-03-28 12:00:05,232 INFO L126 ssoRankerPreferences]: Term annotations enabled: false 12.80/8.57 [2019-03-28 12:00:05,232 INFO L127 ssoRankerPreferences]: Use exernal solver: false 12.80/8.57 [2019-03-28 12:00:05,232 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 12.80/8.57 [2019-03-28 12:00:05,233 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false 12.80/8.57 [2019-03-28 12:00:05,233 INFO L130 ssoRankerPreferences]: Path of dumped script: 12.80/8.57 [2019-03-28 12:00:05,233 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop 12.80/8.57 [2019-03-28 12:00:05,233 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank 12.80/8.57 [2019-03-28 12:00:05,233 INFO L282 LassoAnalysis]: Starting lasso preprocessing... 12.80/8.57 [2019-03-28 12:00:05,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true 12.80/8.57 [2019-03-28 12:00:05,313 INFO L300 LassoAnalysis]: Preprocessing complete. 12.80/8.57 [2019-03-28 12:00:05,319 INFO L497 LassoAnalysis]: Using template 'affine'. 12.80/8.57 [2019-03-28 12:00:05,321 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: 12.80/8.57 Termination analysis: LINEAR_WITH_GUESSES 12.80/8.57 Number of strict supporting invariants: 0 12.80/8.57 Number of non-strict supporting invariants: 1 12.80/8.57 Consider only non-deceasing supporting invariants: true 12.80/8.57 Simplify termination arguments: true 12.80/8.57 Simplify supporting invariants: trueOverapproximate stem: false 12.80/8.57 [2019-03-28 12:00:05,322 INFO L339 nArgumentSynthesizer]: Template has degree 0. 12.80/8.57 [2019-03-28 12:00:05,322 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. 12.80/8.57 [2019-03-28 12:00:05,323 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts 12.80/8.57 [2019-03-28 12:00:05,323 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts 12.80/8.57 [2019-03-28 12:00:05,323 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. 12.80/8.57 [2019-03-28 12:00:05,327 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. 12.80/8.57 [2019-03-28 12:00:05,327 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. 12.80/8.57 [2019-03-28 12:00:05,345 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. 12.80/8.57 [2019-03-28 12:00:05,345 INFO L497 LassoAnalysis]: Using template '2-nested'. 12.80/8.57 [2019-03-28 12:00:05,346 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: 12.80/8.57 Termination analysis: LINEAR_WITH_GUESSES 12.80/8.57 Number of strict supporting invariants: 0 12.80/8.57 Number of non-strict supporting invariants: 1 12.80/8.57 Consider only non-deceasing supporting invariants: true 12.80/8.57 Simplify termination arguments: true 12.80/8.57 Simplify supporting invariants: trueOverapproximate stem: false 12.80/8.57 [2019-03-28 12:00:05,347 INFO L339 nArgumentSynthesizer]: Template has degree 0. 12.80/8.57 [2019-03-28 12:00:05,347 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. 12.80/8.57 [2019-03-28 12:00:05,347 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts 12.80/8.57 [2019-03-28 12:00:05,348 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts 12.80/8.57 [2019-03-28 12:00:05,348 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. 12.80/8.57 [2019-03-28 12:00:05,350 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. 12.80/8.57 [2019-03-28 12:00:05,350 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. 12.80/8.57 [2019-03-28 12:00:05,371 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. 12.80/8.57 [2019-03-28 12:00:05,393 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. 12.80/8.57 [2019-03-28 12:00:05,393 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 1 variables to zero. 12.80/8.57 [2019-03-28 12:00:05,395 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... 12.80/8.57 [2019-03-28 12:00:05,396 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. 12.80/8.57 [2019-03-28 12:00:05,396 INFO L518 LassoAnalysis]: Proved termination. 12.80/8.57 [2019-03-28 12:00:05,396 INFO L520 LassoAnalysis]: Termination argument consisting of: 12.80/8.57 Ranking function 2-nested ranking function: 12.80/8.57 f0 = 2*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 12.80/8.57 f1 = 1*ULTIMATE.start_main_~x~0 12.80/8.57 Supporting invariants [] 12.80/8.57 [2019-03-28 12:00:05,398 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed 12.80/8.57 [2019-03-28 12:00:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.80/8.57 [2019-03-28 12:00:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.80/8.57 [2019-03-28 12:00:05,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core 12.80/8.57 [2019-03-28 12:00:05,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... 12.80/8.57 [2019-03-28 12:00:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.80/8.57 [2019-03-28 12:00:05,456 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core 12.80/8.57 [2019-03-28 12:00:05,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... 12.80/8.57 [2019-03-28 12:00:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 12.80/8.57 [2019-03-28 12:00:05,493 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization 12.80/8.57 [2019-03-28 12:00:05,498 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates 12.80/8.57 [2019-03-28 12:00:05,499 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 2 states. Second operand 2 states. 12.80/8.57 [2019-03-28 12:00:05,518 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 2 states.. Second operand 2 states. Result 3 states and 3 transitions. Complement of second has 2 states. 12.80/8.57 [2019-03-28 12:00:05,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states 12.80/8.57 [2019-03-28 12:00:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. 12.80/8.57 [2019-03-28 12:00:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. 12.80/8.57 [2019-03-28 12:00:05,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 1 letters. 12.80/8.57 [2019-03-28 12:00:05,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. 12.80/8.57 [2019-03-28 12:00:05,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 2 letters. Loop has 1 letters. 12.80/8.57 [2019-03-28 12:00:05,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. 12.80/8.57 [2019-03-28 12:00:05,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 1 letters. Loop has 2 letters. 12.80/8.57 [2019-03-28 12:00:05,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. 12.80/8.57 [2019-03-28 12:00:05,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. 12.80/8.57 [2019-03-28 12:00:05,529 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 12.80/8.57 [2019-03-28 12:00:05,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 12.80/8.57 [2019-03-28 12:00:05,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 12.80/8.57 [2019-03-28 12:00:05,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. 12.80/8.57 [2019-03-28 12:00:05,534 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,535 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,535 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,535 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ 12.80/8.57 [2019-03-28 12:00:05,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. 12.80/8.57 [2019-03-28 12:00:05,535 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 12.80/8.57 [2019-03-28 12:00:05,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true 12.80/8.57 [2019-03-28 12:00:05,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.03 12:00:05 BasicIcfg 12.80/8.57 [2019-03-28 12:00:05,541 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- 12.80/8.57 [2019-03-28 12:00:05,542 INFO L168 Benchmark]: Toolchain (without parser) took 1667.78 ms. Allocated memory was 649.6 MB in the beginning and 665.8 MB in the end (delta: 16.3 MB). Free memory was 565.1 MB in the beginning and 533.9 MB in the end (delta: 31.3 MB). Peak memory consumption was 47.5 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,544 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.83 ms. Allocated memory is still 649.6 MB. Free memory was 565.1 MB in the beginning and 554.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.14 ms. Allocated memory was 649.6 MB in the beginning and 665.8 MB in the end (delta: 16.3 MB). Free memory was 554.1 MB in the beginning and 631.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,546 INFO L168 Benchmark]: Boogie Preprocessor took 20.65 ms. Allocated memory is still 665.8 MB. Free memory was 631.7 MB in the beginning and 630.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,546 INFO L168 Benchmark]: RCFGBuilder took 185.77 ms. Allocated memory is still 665.8 MB. Free memory was 630.4 MB in the beginning and 617.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,547 INFO L168 Benchmark]: BlockEncodingV2 took 73.68 ms. Allocated memory is still 665.8 MB. Free memory was 617.5 MB in the beginning and 611.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,548 INFO L168 Benchmark]: TraceAbstraction took 151.64 ms. Allocated memory is still 665.8 MB. Free memory was 611.0 MB in the beginning and 601.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,548 INFO L168 Benchmark]: BuchiAutomizer took 899.76 ms. Allocated memory is still 665.8 MB. Free memory was 601.6 MB in the beginning and 533.9 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 50.3 GB. 12.80/8.57 [2019-03-28 12:00:05,552 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 12.80/8.57 --- Results --- 12.80/8.57 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 12.80/8.57 - StatisticsResult: Initial Icfg 12.80/8.57 7 locations, 9 edges 12.80/8.57 - StatisticsResult: Encoded RCFG 12.80/8.57 2 locations, 2 edges 12.80/8.57 * Results from de.uni_freiburg.informatik.ultimate.core: 12.80/8.57 - StatisticsResult: Toolchain Benchmarks 12.80/8.57 Benchmark results are: 12.80/8.57 * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.80/8.57 * CACSL2BoogieTranslator took 226.83 ms. Allocated memory is still 649.6 MB. Free memory was 565.1 MB in the beginning and 554.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 50.3 GB. 12.80/8.57 * Boogie Procedure Inliner took 104.14 ms. Allocated memory was 649.6 MB in the beginning and 665.8 MB in the end (delta: 16.3 MB). Free memory was 554.1 MB in the beginning and 631.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 50.3 GB. 12.80/8.57 * Boogie Preprocessor took 20.65 ms. Allocated memory is still 665.8 MB. Free memory was 631.7 MB in the beginning and 630.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 12.80/8.57 * RCFGBuilder took 185.77 ms. Allocated memory is still 665.8 MB. Free memory was 630.4 MB in the beginning and 617.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. 12.80/8.57 * BlockEncodingV2 took 73.68 ms. Allocated memory is still 665.8 MB. Free memory was 617.5 MB in the beginning and 611.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. 12.80/8.57 * TraceAbstraction took 151.64 ms. Allocated memory is still 665.8 MB. Free memory was 611.0 MB in the beginning and 601.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. 12.80/8.57 * BuchiAutomizer took 899.76 ms. Allocated memory is still 665.8 MB. Free memory was 601.6 MB in the beginning and 533.9 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 50.3 GB. 12.80/8.57 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 12.80/8.57 - AllSpecificationsHoldResult: All specifications hold 12.80/8.57 We were not able to verify any specifiation because the program does not contain any specification. 12.80/8.57 - InvariantResult [Line: 23]: Loop Invariant 12.80/8.57 Derived loop invariant: 1 12.80/8.57 - StatisticsResult: Ultimate Automizer benchmark data 12.80/8.57 CFG has 1 procedures, 2 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2occurred 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: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available 12.80/8.57 - StatisticsResult: Constructed decomposition of program 12.80/8.57 Your program was decomposed into 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has 2-nested ranking function (if 2 * x + y > 0 then 1 else 0), (if 2 * x + y > 0 then 2 * x + y else x) and consists of 2 locations. 12.80/8.57 - StatisticsResult: Timing statistics 12.80/8.57 BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf90 smp100 dnf100 smp100 tf107 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s 12.80/8.57 - TerminationAnalysisResult: Termination proven 12.80/8.57 Buchi Automizer proved that your program is terminating 12.80/8.57 RESULT: Ultimate proved your program to be correct! 12.80/8.57 !SESSION 2019-03-28 12:00:00.104 ----------------------------------------------- 12.80/8.57 eclipse.buildId=unknown 12.80/8.57 java.version=1.8.0_181 12.80/8.57 java.vendor=Oracle Corporation 12.80/8.57 BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US 12.80/8.57 Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c 12.80/8.57 Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c 12.80/8.57 12.80/8.57 !ENTRY org.eclipse.core.resources 2 10035 2019-03-28 12:00:05.786 12.80/8.57 !MESSAGE The workspace will exit with unsaved changes in this session. 12.80/8.57 Received shutdown request... 12.80/8.57 Ultimate: 12.80/8.57 GTK+ Version Check 12.80/8.57 EOF