NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 22:40:23,825 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 22:40:23,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 22:40:23,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 22:40:23,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 22:40:23,839 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 22:40:23,840 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 22:40:23,842 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 22:40:23,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 22:40:23,844 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 22:40:23,845 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 22:40:23,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 22:40:23,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 22:40:23,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 22:40:23,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 22:40:23,848 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 22:40:23,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 22:40:23,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 22:40:23,853 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 22:40:23,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 22:40:23,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 22:40:23,856 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 22:40:23,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 22:40:23,858 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 22:40:23,859 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 22:40:23,859 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 22:40:23,860 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 22:40:23,861 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 22:40:23,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 22:40:23,862 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 22:40:23,862 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 22:40:23,863 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 22:40:23,864 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 22:40:23,864 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 22:40:23,865 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 22:40:23,865 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 22:40:23,865 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 22:40:23,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 22:40:23,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 22:40:23,867 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 22:40:23,881 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 22:40:23,881 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 22:40:23,882 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 22:40:23,882 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 22:40:23,882 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 22:40:23,883 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:40:23,883 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 22:40:23,883 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 22:40:23,883 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 22:40:23,883 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 22:40:23,883 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 22:40:23,884 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 22:40:23,884 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 22:40:23,884 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 22:40:23,884 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:40:23,884 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 22:40:23,884 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 22:40:23,885 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 22:40:23,885 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 22:40:23,885 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 22:40:23,885 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 22:40:23,885 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 22:40:23,885 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 22:40:23,886 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 22:40:23,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 22:40:23,886 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 22:40:23,886 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 22:40:23,886 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 22:40:23,886 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 22:40:23,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 22:40:23,924 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 22:40:23,928 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 22:40:23,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 22:40:23,930 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 22:40:23,930 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:40:23,997 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/96e1c6c3636f49c7b781d1581f8f66a3/FLAG2b7db691b [2020-06-21 22:40:24,327 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 22:40:24,328 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 22:40:24,349 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/96e1c6c3636f49c7b781d1581f8f66a3/FLAG2b7db691b [2020-06-21 22:40:24,752 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/96e1c6c3636f49c7b781d1581f8f66a3 [2020-06-21 22:40:24,763 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 22:40:24,764 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 22:40:24,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 22:40:24,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 22:40:24,769 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 22:40:24,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:40:24" (1/1) ... [2020-06-21 22:40:24,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3d02f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:24, skipping insertion in model container [2020-06-21 22:40:24,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:40:24" (1/1) ... [2020-06-21 22:40:24,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 22:40:24,798 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 22:40:24,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:40:24,960 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 22:40:25,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 22:40:25,050 INFO L195 MainTranslator]: Completed translation [2020-06-21 22:40:25,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25 WrapperNode [2020-06-21 22:40:25,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 22:40:25,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 22:40:25,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 22:40:25,052 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 22:40:25,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 22:40:25,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 22:40:25,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 22:40:25,086 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 22:40:25,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 22:40:25,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 22:40:25,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 22:40:25,104 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 22:40:25,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (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 [2020-06-21 22:40:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 22:40:25,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 22:40:25,285 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 22:40:25,285 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 22:40:25,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:40:25 BoogieIcfgContainer [2020-06-21 22:40:25,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 22:40:25,287 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 22:40:25,287 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 22:40:25,289 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 22:40:25,290 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:40:25" (1/1) ... [2020-06-21 22:40:25,307 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-21 22:40:25,308 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 22:40:25,309 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 22:40:25,310 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 22:40:25,310 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 22:40:25,312 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 22:40:25,313 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 22:40:25,313 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 22:40:25,327 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 22:40:25,341 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-21 22:40:25,346 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 22:40:25,347 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:40:25,361 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-21 22:40:25,363 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 22:40:25,364 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 22:40:25,365 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 22:40:25,365 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 22:40:25,365 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 22:40:25,365 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-21 22:40:25,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:40:25 BasicIcfg [2020-06-21 22:40:25,366 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 22:40:25,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 22:40:25,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 22:40:25,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 22:40:25,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:40:24" (1/4) ... [2020-06-21 22:40:25,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e00318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (2/4) ... [2020-06-21 22:40:25,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e00318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:40:25" (3/4) ... [2020-06-21 22:40:25,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e00318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:40:25" (4/4) ... [2020-06-21 22:40:25,374 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:40:25,384 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 22:40:25,391 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 22:40:25,408 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 22:40:25,436 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:40:25,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 22:40:25,437 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 22:40:25,437 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:40:25,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:40:25,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:40:25,438 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 22:40:25,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:40:25,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 22:40:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-21 22:40:25,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 22:40:25,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-21 22:40:25,509 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 22:40:25,510 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 16) no Hoare annotation was computed. [2020-06-21 22:40:25,510 INFO L451 ceAbstractionStarter]: At program point L12-2(lines 11 17) the Hoare annotation is: true [2020-06-21 22:40:25,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:40:25 BasicIcfg [2020-06-21 22:40:25,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 22:40:25,518 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 22:40:25,518 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 22:40:25,521 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 22:40:25,522 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:40:25,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 10:40:24" (1/5) ... [2020-06-21 22:40:25,523 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f6fe7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,523 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:40:25,523 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:40:25" (2/5) ... [2020-06-21 22:40:25,524 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f6fe7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,524 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:40:25,524 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:40:25" (3/5) ... [2020-06-21 22:40:25,524 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f6fe7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,525 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:40:25,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 10:40:25" (4/5) ... [2020-06-21 22:40:25,525 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f6fe7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:40:25, skipping insertion in model container [2020-06-21 22:40:25,525 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 22:40:25,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:40:25" (5/5) ... [2020-06-21 22:40:25,527 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 22:40:25,553 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 22:40:25,553 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 22:40:25,553 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 22:40:25,553 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 22:40:25,554 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 22:40:25,554 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 22:40:25,554 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 22:40:25,554 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 22:40:25,554 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 22:40:25,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 22:40:25,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 22:40:25,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:40:25,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:40:25,582 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:40:25,582 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 22:40:25,582 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 22:40:25,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 22:40:25,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 22:40:25,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:40:25,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:40:25,583 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:40:25,583 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 22:40:25,588 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L12-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-06-21 22:40:25,589 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true [26] L12-2-->L12: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 5#L12true [35] L12-->L12-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-06-21 22:40:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:25,595 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-06-21 22:40:25,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:25,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:25,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:25,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1802, now seen corresponding path program 1 times [2020-06-21 22:40:25,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:25,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:25,676 INFO L82 PathProgramCache]: Analyzing trace with hash 56579, now seen corresponding path program 1 times [2020-06-21 22:40:25,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:25,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:25,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:25,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:25,726 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:25,727 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:25,727 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:25,727 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:25,727 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:40:25,727 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:40:25,728 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:25,728 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:25,728 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 22:40:25,728 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:25,728 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:25,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:25,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:25,814 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:25,814 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 [2020-06-21 22:40:25,820 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:25,820 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2020-06-21 22:40:25,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:40:25,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:25,886 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 22:40:25,888 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:25,888 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:25,888 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:25,889 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:25,889 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 22:40:25,889 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 22:40:25,889 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:25,889 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:25,889 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 22:40:25,889 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:25,889 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:25,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:25,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:25,935 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:25,941 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 22:40:25,943 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 [2020-06-21 22:40:25,944 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 22:40:25,944 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 22:40:25,945 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 22:40:25,945 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 22:40:25,945 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 22:40:25,948 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 22:40:25,948 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 22:40:25,956 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 22:40:25,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 22:40:25,963 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-21 22:40:25,965 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 22:40:25,965 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 22:40:25,966 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 22:40:25,966 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-21 22:40:25,968 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 22:40:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:40:26,020 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 22:40:26,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:40:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:40:26,032 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 22:40:26,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:40:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:40:26,084 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 22:40:26,089 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-21 22:40:26,091 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-21 22:40:26,147 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 11 states and 19 transitions. Complement of second has 6 states. [2020-06-21 22:40:26,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-21 22:40:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 22:40:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-06-21 22:40:26,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 22:40:26,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 22:40:26,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-21 22:40:26,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,160 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 19 transitions. [2020-06-21 22:40:26,161 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-06-21 22:40:26,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 16 transitions. [2020-06-21 22:40:26,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-06-21 22:40:26,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 22:40:26,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2020-06-21 22:40:26,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 22:40:26,167 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2020-06-21 22:40:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2020-06-21 22:40:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-06-21 22:40:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-21 22:40:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-06-21 22:40:26,197 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-06-21 22:40:26,197 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-06-21 22:40:26,197 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 22:40:26,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-06-21 22:40:26,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 22:40:26,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:40:26,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:40:26,198 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 22:40:26,199 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 22:40:26,199 INFO L794 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L12-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 56#L12-2 [26] L12-2-->L12: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 54#L12 [29] L12-->L12-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~x~0] 50#L12-2 [2020-06-21 22:40:26,199 INFO L796 eck$LassoCheckResult]: Loop: 50#L12-2 [26] L12-2-->L12: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 51#L12 [35] L12-->L12-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet1_3|) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_3|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~x~0] 50#L12-2 [2020-06-21 22:40:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash 56573, now seen corresponding path program 1 times [2020-06-21 22:40:26,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:26,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1802, now seen corresponding path program 2 times [2020-06-21 22:40:26,207 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:26,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 54367494, now seen corresponding path program 1 times [2020-06-21 22:40:26,214 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 22:40:26,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,236 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:26,236 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:26,237 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:26,237 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:26,237 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:40:26,237 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:40:26,237 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:26,237 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:26,237 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 22:40:26,238 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:26,238 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:26,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,267 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:26,268 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2020-06-21 22:40:26,275 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,275 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,306 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,306 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=1} Honda state: {ULTIMATE.start_main_#t~nondet1=1} 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 [2020-06-21 22:40:26,311 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,311 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2020-06-21 22:40:26,342 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:40:26,342 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,372 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 22:40:26,374 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:26,374 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:26,375 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:26,375 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:26,375 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 22:40:26,375 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 22:40:26,375 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:26,375 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:26,375 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 22:40:26,375 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:26,376 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:26,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,405 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:26,406 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 22:40:26,406 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 [2020-06-21 22:40:26,407 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 22:40:26,407 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 22:40:26,407 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 22:40:26,407 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 22:40:26,407 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 22:40:26,408 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 22:40:26,408 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 22:40:26,411 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 22:40:26,412 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 [2020-06-21 22:40:26,412 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 22:40:26,412 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 22:40:26,413 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 22:40:26,413 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 22:40:26,413 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 22:40:26,414 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 22:40:26,414 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 22:40:26,419 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 22:40:26,422 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 22:40:26,422 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-21 22:40:26,422 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 22:40:26,423 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 22:40:26,423 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 22:40:26,423 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-21 22:40:26,423 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 22:40:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:40:26,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 22:40:26,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:40:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 22:40:26,450 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 22:40:26,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 22:40:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 22:40:26,474 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 22:40:26,475 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-21 22:40:26,475 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-06-21 22:40:26,516 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 15 states and 24 transitions. Complement of second has 10 states. [2020-06-21 22:40:26,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-21 22:40:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 22:40:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-06-21 22:40:26,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 22:40:26,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-21 22:40:26,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-21 22:40:26,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 22:40:26,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 24 transitions. [2020-06-21 22:40:26,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-21 22:40:26,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 20 transitions. [2020-06-21 22:40:26,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-21 22:40:26,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 22:40:26,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 20 transitions. [2020-06-21 22:40:26,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 22:40:26,523 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 20 transitions. [2020-06-21 22:40:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 20 transitions. [2020-06-21 22:40:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 5. [2020-06-21 22:40:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-21 22:40:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-21 22:40:26,524 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 22:40:26,524 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 22:40:26,524 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 22:40:26,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-06-21 22:40:26,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 22:40:26,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 22:40:26,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 22:40:26,525 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 22:40:26,525 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 22:40:26,526 INFO L794 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L12-2: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 115#L12-2 [2020-06-21 22:40:26,526 INFO L796 eck$LassoCheckResult]: Loop: 115#L12-2 [26] L12-2-->L12: Formula: (<= 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 117#L12 [29] L12-->L12-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_4|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~x~0] 115#L12-2 [2020-06-21 22:40:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 2 times [2020-06-21 22:40:26,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:26,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1796, now seen corresponding path program 1 times [2020-06-21 22:40:26,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 22:40:26,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 22:40:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash 56573, now seen corresponding path program 2 times [2020-06-21 22:40:26,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 22:40:26,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 22:40:26,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 22:40:26,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 22:40:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 22:40:26,562 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:26,563 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:26,563 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:26,563 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:26,563 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:40:26,563 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:40:26,564 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:26,564 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:26,564 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 22:40:26,564 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:26,564 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:26,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,605 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:26,606 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2020-06-21 22:40:26,616 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,620 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,620 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-06-21 22:40:26,655 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,655 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 [2020-06-21 22:40:26,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:40:26,692 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,703 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,703 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] [2020-06-21 22:40:26,737 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 22:40:26,737 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 22:40:26,737 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 22:40:26,737 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 22:40:26,737 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 22:40:26,737 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 22:40:26,737 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 22:40:26,738 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 22:40:26,738 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-06-21 22:40:26,738 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 22:40:26,738 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 22:40:26,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 22:40:26,803 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 22:40:26,803 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2020-06-21 22:40:26,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,813 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,814 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=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 [2020-06-21 22:40:26,851 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,851 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,855 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,855 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=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 [2020-06-21 22:40:26,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,886 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2020-06-21 22:40:26,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 22:40:26,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,928 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,929 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] 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 [2020-06-21 22:40:26,965 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 22:40:26,965 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 22:40:26,970 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 22:40:26,970 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-21 22:40:27,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 10:40:27 BasicIcfg [2020-06-21 22:40:27,016 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 22:40:27,016 INFO L168 Benchmark]: Toolchain (without parser) took 2252.85 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 563.8 MB in the beginning and 462.0 MB in the end (delta: 101.8 MB). Peak memory consumption was 137.5 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,018 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 22:40:27,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.81 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 563.8 MB in the beginning and 652.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.45 ms. Allocated memory is still 685.2 MB. Free memory was 652.2 MB in the beginning and 649.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,020 INFO L168 Benchmark]: Boogie Preprocessor took 18.45 ms. Allocated memory is still 685.2 MB. Free memory was 649.9 MB in the beginning and 648.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,020 INFO L168 Benchmark]: RCFGBuilder took 182.74 ms. Allocated memory is still 685.2 MB. Free memory was 648.9 MB in the beginning and 634.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,021 INFO L168 Benchmark]: BlockEncodingV2 took 78.97 ms. Allocated memory is still 685.2 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,022 INFO L168 Benchmark]: TraceAbstraction took 150.57 ms. Allocated memory is still 685.2 MB. Free memory was 629.3 MB in the beginning and 620.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,022 INFO L168 Benchmark]: BuchiAutomizer took 1497.83 ms. Allocated memory is still 685.2 MB. Free memory was 620.7 MB in the beginning and 462.0 MB in the end (delta: 158.7 MB). Peak memory consumption was 158.7 MB. Max. memory is 50.3 GB. [2020-06-21 22:40:27,026 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 285.81 ms. Allocated memory was 649.6 MB in the beginning and 685.2 MB in the end (delta: 35.7 MB). Free memory was 563.8 MB in the beginning and 652.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.45 ms. Allocated memory is still 685.2 MB. Free memory was 652.2 MB in the beginning and 649.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.45 ms. Allocated memory is still 685.2 MB. Free memory was 649.9 MB in the beginning and 648.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 182.74 ms. Allocated memory is still 685.2 MB. Free memory was 648.9 MB in the beginning and 634.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 78.97 ms. Allocated memory is still 685.2 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.57 ms. Allocated memory is still 685.2 MB. Free memory was 629.3 MB in the beginning and 620.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1497.83 ms. Allocated memory is still 685.2 MB. Free memory was 620.7 MB in the beginning and 462.0 MB in the end (delta: 158.7 MB). Peak memory consumption was 158.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. The remainder module has 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 14 SDslu, 0 SDs, 0 SdLazy, 38 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp76 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 11]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution {|ULTIMATE.start_main_#t~nondet0|=0, |ULTIMATE.start_main_#t~nondet1|=0, ULTIMATE.start_main_~x~0=0, |ULTIMATE.start_main_#res|=0} {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55f1505a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f979=0, x=0} {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55f1505a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f979=0, x=1} {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55f1505a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f979=0, x=2} {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55f1505a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f979=0, x=3} {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55f1505a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e7f979=0, x=4} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [0, 1, 0] Mus: [0, 0] - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int x = __VERIFIER_nondet_int(); Loop: [L11] COND TRUE x >= 0 [L12] COND FALSE !(__VERIFIER_nondet_int()) [L15] x += 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-21 22:40:21.534 ----------------------------------------------- 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 2020-06-21 22:40:27.262 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check