NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 02:41:24,279 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 02:41:24,281 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 02:41:24,292 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 02:41:24,293 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 02:41:24,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 02:41:24,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 02:41:24,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 02:41:24,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 02:41:24,298 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 02:41:24,299 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 02:41:24,299 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 02:41:24,300 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 02:41:24,301 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 02:41:24,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 02:41:24,303 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 02:41:24,304 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 02:41:24,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 02:41:24,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 02:41:24,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 02:41:24,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 02:41:24,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 02:41:24,313 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 02:41:24,313 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 02:41:24,313 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 02:41:24,314 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 02:41:24,314 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 02:41:24,315 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 02:41:24,316 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 02:41:24,316 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 02:41:24,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 02:41:24,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 02:41:24,319 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 02:41:24,319 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 02:41:24,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 02:41:24,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 02:41:24,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 02:41:24,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 02:41:24,321 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 02:41:24,322 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 02:41:24,336 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 02:41:24,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 02:41:24,337 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 02:41:24,337 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 02:41:24,338 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 02:41:24,338 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 02:41:24,338 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 02:41:24,338 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 02:41:24,338 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 02:41:24,338 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 02:41:24,339 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 02:41:24,339 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 02:41:24,339 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 02:41:24,339 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 02:41:24,339 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 02:41:24,339 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 02:41:24,340 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 02:41:24,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 02:41:24,340 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 02:41:24,340 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 02:41:24,340 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 02:41:24,340 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 02:41:24,341 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 02:41:24,341 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 02:41:24,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 02:41:24,380 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 02:41:24,383 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 02:41:24,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 02:41:24,385 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 02:41:24,385 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 02:41:24,453 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/977af138e5524e4a93d1f4b26936ba1a/FLAG08b0e4b7e [2020-06-22 02:41:24,789 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 02:41:24,790 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 02:41:24,796 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/977af138e5524e4a93d1f4b26936ba1a/FLAG08b0e4b7e [2020-06-22 02:41:25,205 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/977af138e5524e4a93d1f4b26936ba1a [2020-06-22 02:41:25,217 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 02:41:25,218 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 02:41:25,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 02:41:25,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 02:41:25,223 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 02:41:25,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56037a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25, skipping insertion in model container [2020-06-22 02:41:25,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 02:41:25,254 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 02:41:25,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 02:41:25,418 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 02:41:25,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 02:41:25,506 INFO L195 MainTranslator]: Completed translation [2020-06-22 02:41:25,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25 WrapperNode [2020-06-22 02:41:25,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 02:41:25,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 02:41:25,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 02:41:25,508 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 02:41:25,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 02:41:25,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 02:41:25,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 02:41:25,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 02:41:25,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 02:41:25,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 02:41:25,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 02:41:25,563 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 02:41:25,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 02:41:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 02:41:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 02:41:25,764 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 02:41:25,765 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2020-06-22 02:41:25,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:25 BoogieIcfgContainer [2020-06-22 02:41:25,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 02:41:25,767 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 02:41:25,767 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 02:41:25,769 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 02:41:25,769 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:25" (1/1) ... [2020-06-22 02:41:25,784 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 13 edges [2020-06-22 02:41:25,786 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 02:41:25,786 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 02:41:25,787 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 02:41:25,787 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 02:41:25,789 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 02:41:25,790 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 02:41:25,791 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 02:41:25,806 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 02:41:25,821 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-22 02:41:25,825 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 02:41:25,827 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 02:41:25,839 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-06-22 02:41:25,841 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-06-22 02:41:25,842 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 02:41:25,842 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 02:41:25,846 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 02:41:25,846 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 02:41:25,847 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 02:41:25,847 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 02:41:25,847 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 02:41:25,847 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 02:41:25,848 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-22 02:41:25,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:41:25 BasicIcfg [2020-06-22 02:41:25,848 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 02:41:25,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 02:41:25,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 02:41:25,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 02:41:25,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 02:41:25" (1/4) ... [2020-06-22 02:41:25,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646de034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:41:25, skipping insertion in model container [2020-06-22 02:41:25,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (2/4) ... [2020-06-22 02:41:25,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646de034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:41:25, skipping insertion in model container [2020-06-22 02:41:25,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:25" (3/4) ... [2020-06-22 02:41:25,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646de034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:41:25, skipping insertion in model container [2020-06-22 02:41:25,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:41:25" (4/4) ... [2020-06-22 02:41:25,856 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 02:41:25,866 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 02:41:25,875 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 02:41:25,893 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 02:41:25,921 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 02:41:25,922 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 02:41:25,922 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 02:41:25,922 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 02:41:25,922 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 02:41:25,922 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 02:41:25,922 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 02:41:25,923 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 02:41:25,923 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 02:41:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 02:41:25,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 02:41:25,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 02:41:25,993 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-06-22 02:41:25,994 INFO L451 ceAbstractionStarter]: At program point L17-2(lines 16 22) the Hoare annotation is: true [2020-06-22 02:41:25,994 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 02:41:26,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:41:26 BasicIcfg [2020-06-22 02:41:26,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 02:41:26,003 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 02:41:26,003 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 02:41:26,007 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 02:41:26,007 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:41:26,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 02:41:25" (1/5) ... [2020-06-22 02:41:26,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b985d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 02:41:26, skipping insertion in model container [2020-06-22 02:41:26,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:41:26,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 02:41:25" (2/5) ... [2020-06-22 02:41:26,009 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b985d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 02:41:26, skipping insertion in model container [2020-06-22 02:41:26,009 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:41:26,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:25" (3/5) ... [2020-06-22 02:41:26,010 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b985d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:41:26, skipping insertion in model container [2020-06-22 02:41:26,010 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:41:26,010 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 02:41:25" (4/5) ... [2020-06-22 02:41:26,010 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b985d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:41:26, skipping insertion in model container [2020-06-22 02:41:26,011 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 02:41:26,011 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:41:26" (5/5) ... [2020-06-22 02:41:26,012 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 02:41:26,039 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 02:41:26,039 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 02:41:26,039 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 02:41:26,040 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 02:41:26,040 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 02:41:26,040 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 02:41:26,040 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 02:41:26,040 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 02:41:26,040 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 02:41:26,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 02:41:26,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 02:41:26,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 02:41:26,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 02:41:26,066 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 02:41:26,066 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 02:41:26,066 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 02:41:26,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 02:41:26,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 02:41:26,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 02:41:26,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 02:41:26,067 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 02:41:26,067 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 02:41:26,074 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [57] ULTIMATE.startENTRY-->L17-2: Formula: (and (= |v_ULTIMATE.start_gcd_#in~y1_2| v_ULTIMATE.start_main_~y1~0_6) (= |v_ULTIMATE.start_gcd_#in~y2_2| v_ULTIMATE.start_gcd_~y2_10) (<= 0 v_ULTIMATE.start_main_~y1~0_6) (<= 0 v_ULTIMATE.start_main_~y2~0_6) (= |v_ULTIMATE.start_gcd_#in~y2_2| v_ULTIMATE.start_main_~y2~0_6) (= |v_ULTIMATE.start_gcd_#in~y1_2| v_ULTIMATE.start_gcd_~y1_11)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_5|, ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_10, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_11, ULTIMATE.start_gcd_#in~y2=|v_ULTIMATE.start_gcd_#in~y2_2|, ULTIMATE.start_gcd_#in~y1=|v_ULTIMATE.start_gcd_#in~y1_2|, ULTIMATE.start_gcd_#res=|v_ULTIMATE.start_gcd_#res_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_6, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_gcd_~y2, ULTIMATE.start_gcd_~y1, ULTIMATE.start_gcd_#in~y2, ULTIMATE.start_gcd_#in~y1, ULTIMATE.start_gcd_#res, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 3#L17-2true [2020-06-22 02:41:26,074 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [51] L17-2-->L17: Formula: (> v_ULTIMATE.start_gcd_~y2_4 v_ULTIMATE.start_gcd_~y1_4) InVars {ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_4, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_4} OutVars{ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_4, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_4} AuxVars[] AssignedVars[] 5#L17true [48] L17-->L17-2: Formula: (and (= v_ULTIMATE.start_gcd_~y2_6 (+ (* (- 1) v_ULTIMATE.start_gcd_~y1_7) v_ULTIMATE.start_gcd_~y2_7)) (>= v_ULTIMATE.start_gcd_~y2_7 v_ULTIMATE.start_gcd_~y1_7)) InVars {ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_7, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_7} OutVars{ULTIMATE.start_gcd_~y2=v_ULTIMATE.start_gcd_~y2_6, ULTIMATE.start_gcd_~y1=v_ULTIMATE.start_gcd_~y1_7} AuxVars[] AssignedVars[ULTIMATE.start_gcd_~y2] 3#L17-2true [2020-06-22 02:41:26,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:41:26,080 INFO L82 PathProgramCache]: Analyzing trace with hash 88, now seen corresponding path program 1 times [2020-06-22 02:41:26,082 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:41:26,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:41:26,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:41:26,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:41:26,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2590, now seen corresponding path program 1 times [2020-06-22 02:41:26,156 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:41:26,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:41:26,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:41:26,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 02:41:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash 86197, now seen corresponding path program 1 times [2020-06-22 02:41:26,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 02:41:26,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 02:41:26,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 02:41:26,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 02:41:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 02:41:26,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 02:41:26 BasicIcfg [2020-06-22 02:41:26,286 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 02:41:26,287 INFO L168 Benchmark]: Toolchain (without parser) took 1069.46 ms. Allocated memory was 649.6 MB in the beginning and 656.4 MB in the end (delta: 6.8 MB). Free memory was 558.8 MB in the beginning and 564.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,289 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 02:41:26,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.05 ms. Allocated memory was 649.6 MB in the beginning and 656.4 MB in the end (delta: 6.8 MB). Free memory was 558.8 MB in the beginning and 622.9 MB in the end (delta: -64.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.10 ms. Allocated memory is still 656.4 MB. Free memory was 622.9 MB in the beginning and 621.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,291 INFO L168 Benchmark]: Boogie Preprocessor took 19.36 ms. Allocated memory is still 656.4 MB. Free memory was 621.6 MB in the beginning and 618.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,291 INFO L168 Benchmark]: RCFGBuilder took 203.45 ms. Allocated memory is still 656.4 MB. Free memory was 618.5 MB in the beginning and 604.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,292 INFO L168 Benchmark]: BlockEncodingV2 took 81.65 ms. Allocated memory is still 656.4 MB. Free memory was 604.2 MB in the beginning and 598.0 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,293 INFO L168 Benchmark]: TraceAbstraction took 153.38 ms. Allocated memory is still 656.4 MB. Free memory was 596.7 MB in the beginning and 588.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,293 INFO L168 Benchmark]: BuchiAutomizer took 283.31 ms. Allocated memory is still 656.4 MB. Free memory was 588.6 MB in the beginning and 564.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 50.3 GB. [2020-06-22 02:41:26,298 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 13 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 288.05 ms. Allocated memory was 649.6 MB in the beginning and 656.4 MB in the end (delta: 6.8 MB). Free memory was 558.8 MB in the beginning and 622.9 MB in the end (delta: -64.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.10 ms. Allocated memory is still 656.4 MB. Free memory was 622.9 MB in the beginning and 621.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.36 ms. Allocated memory is still 656.4 MB. Free memory was 621.6 MB in the beginning and 618.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 203.45 ms. Allocated memory is still 656.4 MB. Free memory was 618.5 MB in the beginning and 604.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.65 ms. Allocated memory is still 656.4 MB. Free memory was 604.2 MB in the beginning and 598.0 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 50.3 GB. * TraceAbstraction took 153.38 ms. Allocated memory is still 656.4 MB. Free memory was 596.7 MB in the beginning and 588.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 283.31 ms. Allocated memory is still 656.4 MB. Free memory was 588.6 MB in the beginning and 564.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred 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 - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 16]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {y2=1, y1=0, \old(y1)=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48d73ff5=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@252564c6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35c234c5=0, \old(y2)=1, y2=1, \result=0, y1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L27] int y1 = __VERIFIER_nondet_int(); [L28] int y2 = __VERIFIER_nondet_int(); [L29] COND TRUE y1 >= 0 && y2 >= 0 Loop: [L16] COND TRUE y1 != y2 [L17] COND FALSE !(y1 > y2) [L20] y2 = y2 - y1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 02:41:21.978 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 02:41:26.536 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check