NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 05:21:24,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 05:21:24,330 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 05:21:24,343 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 05:21:24,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 05:21:24,345 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 05:21:24,346 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 05:21:24,347 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 05:21:24,349 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 05:21:24,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 05:21:24,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 05:21:24,351 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 05:21:24,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 05:21:24,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 05:21:24,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 05:21:24,354 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 05:21:24,355 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 05:21:24,357 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 05:21:24,359 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 05:21:24,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 05:21:24,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 05:21:24,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 05:21:24,364 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 05:21:24,364 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 05:21:24,365 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 05:21:24,365 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 05:21:24,366 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 05:21:24,367 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 05:21:24,367 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 05:21:24,368 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 05:21:24,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 05:21:24,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 05:21:24,370 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 05:21:24,370 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 05:21:24,371 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 05:21:24,371 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 05:21:24,371 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 05:21:24,372 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 05:21:24,373 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 05:21:24,373 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 05:21:24,388 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 05:21:24,389 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 05:21:24,390 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 05:21:24,390 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 05:21:24,390 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 05:21:24,390 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:21:24,390 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 05:21:24,390 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 05:21:24,391 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:24,392 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 05:21:24,392 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 05:21:24,393 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 05:21:24,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 05:21:24,393 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 05:21:24,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 05:21:24,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 05:21:24,393 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 05:21:24,394 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 05:21:24,394 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 05:21:24,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 05:21:24,433 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 05:21:24,436 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 05:21:24,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 05:21:24,438 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 05:21:24,439 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 05:21:24,504 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/079bbe9b9e0a47228c324c33c0403d1f/FLAG257631610 [2020-06-22 05:21:24,846 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 05:21:24,847 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 05:21:24,853 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/079bbe9b9e0a47228c324c33c0403d1f/FLAG257631610 [2020-06-22 05:21:25,267 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/079bbe9b9e0a47228c324c33c0403d1f [2020-06-22 05:21:25,278 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 05:21:25,280 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 05:21:25,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 05:21:25,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 05:21:25,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 05:21:25,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cc0cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25, skipping insertion in model container [2020-06-22 05:21:25,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 05:21:25,312 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 05:21:25,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:21:25,468 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 05:21:25,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 05:21:25,561 INFO L195 MainTranslator]: Completed translation [2020-06-22 05:21:25,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25 WrapperNode [2020-06-22 05:21:25,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 05:21:25,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 05:21:25,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 05:21:25,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 05:21:25,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 05:21:25,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 05:21:25,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 05:21:25,600 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 05:21:25,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 05:21:25,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 05:21:25,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 05:21:25,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 05:21:25,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (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 05:21:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-06-22 05:21:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-06-22 05:21:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 05:21:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 05:21:25,830 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 05:21:25,830 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2020-06-22 05:21:25,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:25 BoogieIcfgContainer [2020-06-22 05:21:25,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 05:21:25,832 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 05:21:25,832 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 05:21:25,835 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 05:21:25,836 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:25" (1/1) ... [2020-06-22 05:21:25,854 INFO L313 BlockEncoder]: Initial Icfg 14 locations, 17 edges [2020-06-22 05:21:25,856 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 05:21:25,856 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 05:21:25,857 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 05:21:25,857 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 05:21:25,859 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 05:21:25,860 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 05:21:25,860 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 05:21:25,876 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 05:21:25,891 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 05:21:25,895 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:21:25,897 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:21:25,906 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 05:21:25,908 INFO L70 RemoveSinkStates]: Removed 4 edges and 3 locations by removing sink states [2020-06-22 05:21:25,909 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:21:25,910 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:21:25,914 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 05:21:25,915 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 05:21:25,915 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 05:21:25,915 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 05:21:25,915 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 05:21:25,916 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 05:21:25,916 INFO L313 BlockEncoder]: Encoded RCFG 9 locations, 12 edges [2020-06-22 05:21:25,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:21:25 BasicIcfg [2020-06-22 05:21:25,917 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 05:21:25,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 05:21:25,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 05:21:25,922 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 05:21:25,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 05:21:25" (1/4) ... [2020-06-22 05:21:25,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc98f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:21:25, skipping insertion in model container [2020-06-22 05:21:25,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (2/4) ... [2020-06-22 05:21:25,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc98f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:21:25, skipping insertion in model container [2020-06-22 05:21:25,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:25" (3/4) ... [2020-06-22 05:21:25,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc98f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:21:25, skipping insertion in model container [2020-06-22 05:21:25,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:21:25" (4/4) ... [2020-06-22 05:21:25,926 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:21:25,936 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 05:21:25,943 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 05:21:25,960 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 05:21:25,989 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:21:25,990 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 05:21:25,990 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 05:21:25,990 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:21:25,990 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:21:25,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:21:25,991 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 05:21:25,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:21:25,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 05:21:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-06-22 05:21:26,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 05:21:26,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-06-22 05:21:26,077 INFO L451 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: true [2020-06-22 05:21:26,077 INFO L451 ceAbstractionStarter]: At program point L15-1(line 15) the Hoare annotation is: true [2020-06-22 05:21:26,078 INFO L448 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-06-22 05:21:26,078 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-06-22 05:21:26,078 INFO L448 ceAbstractionStarter]: For program point gEXIT(lines 10 16) no Hoare annotation was computed. [2020-06-22 05:21:26,078 INFO L448 ceAbstractionStarter]: For program point gFINAL(lines 10 16) no Hoare annotation was computed. [2020-06-22 05:21:26,078 INFO L451 ceAbstractionStarter]: At program point gENTRY(lines 10 16) the Hoare annotation is: true [2020-06-22 05:21:26,079 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 05:21:26,079 INFO L451 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: true [2020-06-22 05:21:26,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:21:26 BasicIcfg [2020-06-22 05:21:26,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 05:21:26,083 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 05:21:26,083 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 05:21:26,087 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 05:21:26,088 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:21:26,088 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 05:21:25" (1/5) ... [2020-06-22 05:21:26,089 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eac49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:21:26, skipping insertion in model container [2020-06-22 05:21:26,089 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:21:26,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 05:21:25" (2/5) ... [2020-06-22 05:21:26,089 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eac49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 05:21:26, skipping insertion in model container [2020-06-22 05:21:26,090 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:21:26,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:21:25" (3/5) ... [2020-06-22 05:21:26,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eac49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:21:26, skipping insertion in model container [2020-06-22 05:21:26,090 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:21:26,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 05:21:25" (4/5) ... [2020-06-22 05:21:26,091 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5eac49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:21:26, skipping insertion in model container [2020-06-22 05:21:26,091 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 05:21:26,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:21:26" (5/5) ... [2020-06-22 05:21:26,092 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 05:21:26,120 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 05:21:26,120 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 05:21:26,121 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 05:21:26,121 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 05:21:26,121 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 05:21:26,121 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 05:21:26,121 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 05:21:26,121 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 05:21:26,121 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 05:21:26,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-06-22 05:21:26,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 05:21:26,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:26,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:26,153 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 05:21:26,153 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 05:21:26,153 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 05:21:26,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-06-22 05:21:26,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 05:21:26,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:26,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:26,155 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 05:21:26,155 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 05:21:26,160 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 3#L21true [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 6#gENTRYtrue [2020-06-22 05:21:26,161 INFO L796 eck$LassoCheckResult]: Loop: 6#gENTRYtrue [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 4#L12true [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 8#L15true [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 6#gENTRYtrue [2020-06-22 05:21:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:26,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2514, now seen corresponding path program 1 times [2020-06-22 05:21:26,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:26,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:26,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:26,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash 65850, now seen corresponding path program 1 times [2020-06-22 05:21:26,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:26,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:26,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:26,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:26,249 INFO L82 PathProgramCache]: Analyzing trace with hash 74930633, now seen corresponding path program 1 times [2020-06-22 05:21:26,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:26,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:26,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:26,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:26,332 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:26,333 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:26,334 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:26,334 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:26,334 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:21:26,334 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,334 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:26,334 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:26,334 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 05:21:26,335 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:26,335 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:26,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,440 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:26,441 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,447 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:26,447 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:26,456 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:26,457 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:26,485 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:26,489 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:26,489 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,516 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:26,517 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:26,520 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:26,521 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,551 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:26,551 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:26,555 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:26,555 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:26,583 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:26,614 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:21:26,614 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:26,645 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 05:21:26,647 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:26,648 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:26,648 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:26,648 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:26,648 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 05:21:26,648 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 05:21:26,648 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:26,648 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:26,649 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 05:21:26,649 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:26,649 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:26,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:26,712 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:26,718 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 05:21:26,720 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:26,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:26,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:26,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:26,723 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:26,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:26,725 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:26,725 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:26,729 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:21:26,730 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:26,730 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:26,731 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:26,731 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:26,731 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:26,731 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:26,732 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:26,732 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:26,734 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:21:26,734 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:26,735 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:26,735 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:26,735 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:26,735 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:26,735 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:26,736 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:26,736 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:26,738 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:21:26,738 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:26,739 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:26,739 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:26,739 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:26,739 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:26,739 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:26,740 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:26,740 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:26,741 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 05:21:26,742 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:26,742 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:26,743 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:26,743 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:26,743 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:26,743 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:26,744 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:26,744 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:26,750 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 05:21:26,754 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 05:21:26,754 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 05:21:26,756 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 05:21:26,756 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 05:21:26,757 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 05:21:26,757 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [] [2020-06-22 05:21:26,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 05:21:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:26,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 05:21:26,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:21:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:26,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-22 05:21:26,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:21:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:21:26,878 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 05:21:26,883 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 3 loop predicates [2020-06-22 05:21:26,884 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states. Second operand 4 states. [2020-06-22 05:21:26,980 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states.. Second operand 4 states. Result 49 states and 75 transitions. Complement of second has 24 states. [2020-06-22 05:21:26,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-06-22 05:21:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 05:21:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-06-22 05:21:26,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2020-06-22 05:21:26,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:26,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2020-06-22 05:21:26,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:26,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2020-06-22 05:21:26,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:26,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 75 transitions. [2020-06-22 05:21:27,003 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-06-22 05:21:27,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 35 states and 60 transitions. [2020-06-22 05:21:27,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-06-22 05:21:27,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-06-22 05:21:27,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 60 transitions. [2020-06-22 05:21:27,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:27,014 INFO L706 BuchiCegarLoop]: Abstraction has 35 states and 60 transitions. [2020-06-22 05:21:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 60 transitions. [2020-06-22 05:21:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2020-06-22 05:21:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-06-22 05:21:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2020-06-22 05:21:27,052 INFO L729 BuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2020-06-22 05:21:27,052 INFO L609 BuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2020-06-22 05:21:27,052 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 05:21:27,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 41 transitions. [2020-06-22 05:21:27,053 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-06-22 05:21:27,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:27,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:27,054 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-06-22 05:21:27,054 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 05:21:27,055 INFO L794 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 124#L21 [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 130#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 123#L12 [47] L12-->L15: Formula: (> 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 125#L15 [2020-06-22 05:21:27,055 INFO L796 eck$LassoCheckResult]: Loop: 125#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 132#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 133#L12 [47] L12-->L15: Formula: (> 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 125#L15 [2020-06-22 05:21:27,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:27,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2417117, now seen corresponding path program 1 times [2020-06-22 05:21:27,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:27,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:27,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:27,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:21:27,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:21:27,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 05:21:27,104 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-22 05:21:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:27,104 INFO L82 PathProgramCache]: Analyzing trace with hash 66511, now seen corresponding path program 1 times [2020-06-22 05:21:27,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:27,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:27,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:27,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:27,143 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:27,144 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:27,144 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:27,144 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:27,144 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:21:27,144 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,144 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:27,144 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:27,145 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 05:21:27,145 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:27,145 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:27,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,205 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:27,205 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,208 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:27,208 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,243 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:21:27,244 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:27,449 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:27,449 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-2, g_~x=-6} Honda state: {g_#in~x=-2, g_~x=-6} Generalized eigenvectors: [{g_#in~x=1, g_~x=0}, {g_#in~x=-5, g_~x=0}, {g_#in~x=-1, g_~x=-1}] Lambdas: [5, 0, 1] Nus: [1, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,478 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:27,478 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:27,481 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:27,482 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,511 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:27,511 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:27,515 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:27,515 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,545 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:27,545 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:27,548 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:27,549 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-22 05:21:27,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 05:21:27,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-06-22 05:21:27,578 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-06-22 05:21:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:21:27,650 INFO L93 Difference]: Finished difference Result 36 states and 57 transitions. [2020-06-22 05:21:27,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-06-22 05:21:27,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 57 transitions. [2020-06-22 05:21:27,656 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:21:27,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 32 states and 52 transitions. [2020-06-22 05:21:27,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-06-22 05:21:27,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2020-06-22 05:21:27,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 52 transitions. [2020-06-22 05:21:27,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:27,660 INFO L706 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-06-22 05:21:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 52 transitions. [2020-06-22 05:21:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-06-22 05:21:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-06-22 05:21:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-06-22 05:21:27,667 INFO L729 BuchiCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-06-22 05:21:27,667 INFO L609 BuchiCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-06-22 05:21:27,667 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 05:21:27,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 51 transitions. [2020-06-22 05:21:27,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2020-06-22 05:21:27,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:27,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:27,669 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-06-22 05:21:27,669 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 05:21:27,670 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 196#L21 [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 197#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 205#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 206#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 217#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 224#L12 [47] L12-->L15: Formula: (> 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 209#L15 [2020-06-22 05:21:27,670 INFO L796 eck$LassoCheckResult]: Loop: 209#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 208#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 210#L12 [47] L12-->L15: Formula: (> 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 209#L15 [2020-06-22 05:21:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1006104556, now seen corresponding path program 1 times [2020-06-22 05:21:27,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:27,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:27,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:27,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:21:27,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:21:27,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 05:21:27,719 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-06-22 05:21:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:27,719 INFO L82 PathProgramCache]: Analyzing trace with hash 66511, now seen corresponding path program 2 times [2020-06-22 05:21:27,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:27,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:27,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:27,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:27,760 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:27,760 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:27,760 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:27,760 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:27,760 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:21:27,760 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,761 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:27,761 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:27,761 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 05:21:27,761 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:27,761 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:27,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:27,803 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:27,803 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,807 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:27,807 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:27,844 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:21:27,844 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,033 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,033 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-7, g_~x=-2} Honda state: {g_#in~x=-7, g_~x=-2} Generalized eigenvectors: [{g_#in~x=-1, g_~x=0}, {g_#in~x=6, g_~x=0}, {g_#in~x=-1, g_~x=-1}] Lambdas: [6, 0, 1] Nus: [1, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,064 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,065 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,095 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,095 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,099 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,099 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-06-22 05:21:28,126 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,126 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,129 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,130 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-22 05:21:28,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-06-22 05:21:28,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-06-22 05:21:28,155 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. cyclomatic complexity: 23 Second operand 5 states. [2020-06-22 05:21:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:21:28,232 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-06-22 05:21:28,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-06-22 05:21:28,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-06-22 05:21:28,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-06-22 05:21:28,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 53 transitions. [2020-06-22 05:21:28,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-06-22 05:21:28,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2020-06-22 05:21:28,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2020-06-22 05:21:28,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:28,240 INFO L706 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-06-22 05:21:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2020-06-22 05:21:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-06-22 05:21:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-06-22 05:21:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-06-22 05:21:28,246 INFO L729 BuchiCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-06-22 05:21:28,246 INFO L609 BuchiCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-06-22 05:21:28,246 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 05:21:28,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 40 transitions. [2020-06-22 05:21:28,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-06-22 05:21:28,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:28,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:28,249 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:21:28,249 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 05:21:28,250 INFO L794 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 280#L21 [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 281#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 279#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 277#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 287#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 275#L12 [27] L12-->gFINAL: Formula: (and (= |v_g_#res_1| 1) (= 0 v_g_~x_2)) InVars {g_~x=v_g_~x_2} OutVars{g_#res=|v_g_#res_1|, g_~x=v_g_~x_2} AuxVars[] AssignedVars[g_#res] 278#gFINAL [29] gFINAL-->gEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 296#gEXIT >[43] gEXIT-->L15-1: AOR: Formula: (= |v_g_#t~ret0_4| |v_g_#resOutParam_1|) InVars {g_#res=|v_g_#resOutParam_1|} OutVars{g_#t~ret0=|v_g_#t~ret0_4|} AuxVars[] AssignedVars[g_#t~ret0] LVA: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x] 293#L15-1 [38] L15-1-->gENTRY: Formula: (= |v_g_#in~xInParam_2| (+ |v_g_#t~ret0_5| 1)) InVars {g_#t~ret0=|v_g_#t~ret0_5|} OutVars{g_#in~x=|v_g_#in~xInParam_2|} AuxVars[] AssignedVars[g_#in~x]< 295#gENTRY [2020-06-22 05:21:28,250 INFO L796 eck$LassoCheckResult]: Loop: 295#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 302#L12 [47] L12-->L15: Formula: (> 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 290#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 295#gENTRY [2020-06-22 05:21:28,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1715364408, now seen corresponding path program 1 times [2020-06-22 05:21:28,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:21:28,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash 65881, now seen corresponding path program 3 times [2020-06-22 05:21:28,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:28,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash 900227010, now seen corresponding path program 1 times [2020-06-22 05:21:28,270 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:21:28,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-06-22 05:21:28,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 05:21:28,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-06-22 05:21:28,352 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:28,353 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:28,353 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:28,353 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:28,353 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:21:28,353 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,353 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:28,353 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:28,354 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 05:21:28,354 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:28,354 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:28,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,404 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:28,404 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,408 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,408 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,412 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,412 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,440 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,441 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,444 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,444 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,495 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,498 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,498 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,527 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,527 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,530 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,531 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,559 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,559 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,589 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:21:28,590 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:28,606 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 05:21:28,606 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-1} Honda state: {g_#in~x=-1} Generalized eigenvectors: [{g_#in~x=-1}, {g_#in~x=0}, {g_#in~x=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2020-06-22 05:21:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-06-22 05:21:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-06-22 05:21:28,630 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. cyclomatic complexity: 13 Second operand 6 states. [2020-06-22 05:21:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:21:28,671 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-06-22 05:21:28,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-06-22 05:21:28,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2020-06-22 05:21:28,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-06-22 05:21:28,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2020-06-22 05:21:28,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-06-22 05:21:28,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-06-22 05:21:28,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2020-06-22 05:21:28,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:28,676 INFO L706 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-06-22 05:21:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2020-06-22 05:21:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2020-06-22 05:21:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-06-22 05:21:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-06-22 05:21:28,679 INFO L729 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-06-22 05:21:28,679 INFO L609 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-06-22 05:21:28,679 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 05:21:28,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2020-06-22 05:21:28,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 05:21:28,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:28,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:28,680 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:21:28,680 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-06-22 05:21:28,681 INFO L794 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 345#L21 [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 346#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 344#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 342#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 348#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 341#L12 [27] L12-->gFINAL: Formula: (and (= |v_g_#res_1| 1) (= 0 v_g_~x_2)) InVars {g_~x=v_g_~x_2} OutVars{g_#res=|v_g_#res_1|, g_~x=v_g_~x_2} AuxVars[] AssignedVars[g_#res] 343#gFINAL [29] gFINAL-->gEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 354#gEXIT >[43] gEXIT-->L15-1: AOR: Formula: (= |v_g_#t~ret0_4| |v_g_#resOutParam_1|) InVars {g_#res=|v_g_#resOutParam_1|} OutVars{g_#t~ret0=|v_g_#t~ret0_4|} AuxVars[] AssignedVars[g_#t~ret0] LVA: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x] 352#L15-1 [2020-06-22 05:21:28,681 INFO L796 eck$LassoCheckResult]: Loop: 352#L15-1 [38] L15-1-->gENTRY: Formula: (= |v_g_#in~xInParam_2| (+ |v_g_#t~ret0_5| 1)) InVars {g_#t~ret0=|v_g_#t~ret0_5|} OutVars{g_#in~x=|v_g_#in~xInParam_2|} AuxVars[] AssignedVars[g_#in~x]< 355#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 356#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 350#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 353#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 357#L12 [27] L12-->gFINAL: Formula: (and (= |v_g_#res_1| 1) (= 0 v_g_~x_2)) InVars {g_~x=v_g_~x_2} OutVars{g_#res=|v_g_#res_1|, g_~x=v_g_~x_2} AuxVars[] AssignedVars[g_#res] 349#gFINAL [29] gFINAL-->gEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 351#gEXIT >[43] gEXIT-->L15-1: AOR: Formula: (= |v_g_#t~ret0_4| |v_g_#resOutParam_1|) InVars {g_#res=|v_g_#resOutParam_1|} OutVars{g_#t~ret0=|v_g_#t~ret0_4|} AuxVars[] AssignedVars[g_#t~ret0] LVA: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x] 352#L15-1 [2020-06-22 05:21:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -498854994, now seen corresponding path program 1 times [2020-06-22 05:21:28,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:28,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1062566437, now seen corresponding path program 1 times [2020-06-22 05:21:28,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:28,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:28,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1701485704, now seen corresponding path program 2 times [2020-06-22 05:21:28,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:28,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:28,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 05:21:28,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-06-22 05:21:28,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-22 05:21:28,768 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-22 05:21:28,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2020-06-22 05:21:28,791 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-06-22 05:21:28,792 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-06-22 05:21:28,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-06-22 05:21:28,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:21:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-06-22 05:21:28,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-22 05:21:28,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-06-22 05:21:28,903 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:28,904 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:28,904 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:28,904 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:28,904 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 05:21:28,904 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,904 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:28,904 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:28,904 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 05:21:28,905 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:28,905 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:28,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:28,947 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:28,948 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,950 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 05:21:28,950 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 05:21:28,980 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 05:21:28,980 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 05:21:30,670 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 05:21:30,673 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 05:21:30,673 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 05:21:30,673 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 05:21:30,673 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 05:21:30,673 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 05:21:30,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 05:21:30,674 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 05:21:30,674 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 05:21:30,674 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 05:21:30,674 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 05:21:30,674 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 05:21:30,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:30,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:30,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 05:21:30,719 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 05:21:30,719 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 05:21:30,720 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 05:21:30,720 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 05:21:30,721 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 05:21:30,721 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 05:21:30,721 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 05:21:30,721 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 05:21:30,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 05:21:30,722 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 05:21:30,729 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 05:21:30,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 05:21:30,734 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 05:21:30,734 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 05:21:30,735 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 05:21:30,735 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 05:21:30,735 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2020-06-22 05:21:30,735 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 05:21:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:30,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 05:21:30,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:21:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 05:21:30,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2020-06-22 05:21:30,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 05:21:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 05:21:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:30,976 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-06-22 05:21:30,976 INFO L98 LoopCannibalizer]: 7 predicates before loop cannibalization 7 predicates after loop cannibalization [2020-06-22 05:21:30,976 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 7 loop predicates [2020-06-22 05:21:30,977 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 8 states. [2020-06-22 05:21:31,260 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states and 19 transitions. cyclomatic complexity: 4. Second operand 8 states. Result 345 states and 475 transitions. Complement of second has 231 states. [2020-06-22 05:21:31,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 5 non-accepting loop states 2 accepting loop states [2020-06-22 05:21:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 05:21:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2020-06-22 05:21:31,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 9 letters. Loop has 8 letters. [2020-06-22 05:21:31,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:31,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 17 letters. Loop has 8 letters. [2020-06-22 05:21:31,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:31,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 9 letters. Loop has 16 letters. [2020-06-22 05:21:31,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 05:21:31,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 475 transitions. [2020-06-22 05:21:31,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2020-06-22 05:21:31,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 85 states and 103 transitions. [2020-06-22 05:21:31,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-06-22 05:21:31,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-06-22 05:21:31,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 103 transitions. [2020-06-22 05:21:31,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:31,278 INFO L706 BuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2020-06-22 05:21:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 103 transitions. [2020-06-22 05:21:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 28. [2020-06-22 05:21:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-06-22 05:21:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-06-22 05:21:31,283 INFO L729 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-06-22 05:21:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-06-22 05:21:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-06-22 05:21:31,283 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-06-22 05:21:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 05:21:31,361 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-06-22 05:21:31,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-06-22 05:21:31,363 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 29 transitions. [2020-06-22 05:21:31,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-06-22 05:21:31,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 20 states and 22 transitions. [2020-06-22 05:21:31,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-06-22 05:21:31,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-06-22 05:21:31,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2020-06-22 05:21:31,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 05:21:31,366 INFO L706 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-06-22 05:21:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2020-06-22 05:21:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-06-22 05:21:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-06-22 05:21:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-06-22 05:21:31,368 INFO L729 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-06-22 05:21:31,368 INFO L609 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-06-22 05:21:31,368 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 05:21:31,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2020-06-22 05:21:31,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-06-22 05:21:31,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 05:21:31,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 05:21:31,369 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 05:21:31,370 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2020-06-22 05:21:31,370 INFO L794 eck$LassoCheckResult]: Stem: 1148#ULTIMATE.startENTRY [49] ULTIMATE.startENTRY-->L21: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_8) InVars {} OutVars{ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret3] 1146#L21 [34] L21-->gENTRY: Formula: (= |v_g_#in~xInParam_3| v_ULTIMATE.start_main_~x~0_7) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{g_#in~x=|v_g_#in~xInParam_3|} AuxVars[] AssignedVars[g_#in~x]< 1147#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 1144#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 1145#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 1150#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 1151#L12 [27] L12-->gFINAL: Formula: (and (= |v_g_#res_1| 1) (= 0 v_g_~x_2)) InVars {g_~x=v_g_~x_2} OutVars{g_#res=|v_g_#res_1|, g_~x=v_g_~x_2} AuxVars[] AssignedVars[g_#res] 1159#gFINAL [29] gFINAL-->gEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 1155#gEXIT >[43] gEXIT-->L15-1: AOR: Formula: (= |v_g_#t~ret0_4| |v_g_#resOutParam_1|) InVars {g_#res=|v_g_#resOutParam_1|} OutVars{g_#t~ret0=|v_g_#t~ret0_4|} AuxVars[] AssignedVars[g_#t~ret0] LVA: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x] 1154#L15-1 [2020-06-22 05:21:31,370 INFO L796 eck$LassoCheckResult]: Loop: 1154#L15-1 [38] L15-1-->gENTRY: Formula: (= |v_g_#in~xInParam_2| (+ |v_g_#t~ret0_5| 1)) InVars {g_#t~ret0=|v_g_#t~ret0_5|} OutVars{g_#in~x=|v_g_#in~xInParam_2|} AuxVars[] AssignedVars[g_#in~x]< 1156#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 1158#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 1142#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 1149#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 1141#L12 [46] L12-->L15: Formula: (< 0 v_g_~x_3) InVars {g_~x=v_g_~x_3} OutVars{g_~x=v_g_~x_3} AuxVars[] AssignedVars[] 1143#L15 [37] L15-->gENTRY: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x]< 1157#gENTRY [36] gENTRY-->L12: Formula: (= v_g_~x_1 |v_g_#in~x_1|) InVars {g_#in~x=|v_g_#in~x_1|} OutVars{g_#in~x=|v_g_#in~x_1|, g_~x=v_g_~x_1} AuxVars[] AssignedVars[g_~x] 1160#L12 [27] L12-->gFINAL: Formula: (and (= |v_g_#res_1| 1) (= 0 v_g_~x_2)) InVars {g_~x=v_g_~x_2} OutVars{g_#res=|v_g_#res_1|, g_~x=v_g_~x_2} AuxVars[] AssignedVars[g_#res] 1152#gFINAL [29] gFINAL-->gEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 1153#gEXIT >[43] gEXIT-->L15-1: AOR: Formula: (= |v_g_#t~ret0_4| |v_g_#resOutParam_1|) InVars {g_#res=|v_g_#resOutParam_1|} OutVars{g_#t~ret0=|v_g_#t~ret0_4|} AuxVars[] AssignedVars[g_#t~ret0] LVA: Formula: (= |v_g_#in~xInParam_1| (+ v_g_~x_5 (- 1))) InVars {g_~x=v_g_~x_5} OutVars{g_#in~x=|v_g_#in~xInParam_1|} AuxVars[] AssignedVars[g_#in~x] 1154#L15-1 [2020-06-22 05:21:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash -498854994, now seen corresponding path program 2 times [2020-06-22 05:21:31,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:31,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:31,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:21:31,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash -456592758, now seen corresponding path program 2 times [2020-06-22 05:21:31,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:31,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:31,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:21:31,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 05:21:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash 307740861, now seen corresponding path program 3 times [2020-06-22 05:21:31,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 05:21:31,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 05:21:31,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 05:21:31,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 05:21:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 05:21:31,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 05:21:31 BasicIcfg [2020-06-22 05:21:31,646 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 05:21:31,646 INFO L168 Benchmark]: Toolchain (without parser) took 6367.47 ms. Allocated memory was 649.6 MB in the beginning and 750.3 MB in the end (delta: 100.7 MB). Free memory was 558.9 MB in the beginning and 454.9 MB in the end (delta: 104.0 MB). Peak memory consumption was 204.7 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,648 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 581.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 05:21:31,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.75 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 558.9 MB in the beginning and 647.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 681.1 MB. Free memory was 647.6 MB in the beginning and 646.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,649 INFO L168 Benchmark]: Boogie Preprocessor took 17.60 ms. Allocated memory is still 681.1 MB. Free memory was 646.3 MB in the beginning and 644.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,650 INFO L168 Benchmark]: RCFGBuilder took 214.63 ms. Allocated memory is still 681.1 MB. Free memory was 644.9 MB in the beginning and 628.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,650 INFO L168 Benchmark]: BlockEncodingV2 took 84.65 ms. Allocated memory is still 681.1 MB. Free memory was 628.9 MB in the beginning and 623.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,651 INFO L168 Benchmark]: TraceAbstraction took 164.59 ms. Allocated memory is still 681.1 MB. Free memory was 623.5 MB in the beginning and 612.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,651 INFO L168 Benchmark]: BuchiAutomizer took 5562.81 ms. Allocated memory was 681.1 MB in the beginning and 750.3 MB in the end (delta: 69.2 MB). Free memory was 612.7 MB in the beginning and 454.9 MB in the end (delta: 157.8 MB). Peak memory consumption was 227.0 MB. Max. memory is 50.3 GB. [2020-06-22 05:21:31,655 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 14 locations, 17 edges - StatisticsResult: Encoded RCFG 9 locations, 12 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 649.6 MB. Free memory is still 581.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 281.75 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 558.9 MB in the beginning and 647.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 681.1 MB. Free memory was 647.6 MB in the beginning and 646.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 17.60 ms. Allocated memory is still 681.1 MB. Free memory was 646.3 MB in the beginning and 644.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 214.63 ms. Allocated memory is still 681.1 MB. Free memory was 644.9 MB in the beginning and 628.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 84.65 ms. Allocated memory is still 681.1 MB. Free memory was 628.9 MB in the beginning and 623.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 164.59 ms. Allocated memory is still 681.1 MB. Free memory was 623.5 MB in the beginning and 612.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 5562.81 ms. Allocated memory was 681.1 MB in the beginning and 750.3 MB in the end (delta: 69.2 MB). Free memory was 612.7 MB in the beginning and 454.9 MB in the end (delta: 157.8 MB). Peak memory consumption was 227.0 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 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=9occurred 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, 4 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 4 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function \old(x) and consists of 6 locations. One nondeterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 9 locations. 4 modules have a trivial ranking function, the largest among these consists of 8 locations. The remainder module has 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 77 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 79 SDtfs, 76 SDslu, 116 SDs, 0 SdLazy, 200 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN2 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf91 smp100 dnf100 smp100 tf110 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32239167=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6917fc03=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4415bca7=0, \old(x)=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c1f3e60=0, x=0, x=1, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) [L21] CALL g(x) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 05:21:22.025 ----------------------------------------------- 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 05:21:31.891 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check