YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:18:40,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:18:40,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:18:40,229 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:18:40,229 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:18:40,230 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:18:40,231 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:18:40,233 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:18:40,234 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:18:40,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:18:40,236 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:18:40,236 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:18:40,237 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:18:40,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:18:40,239 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:18:40,240 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:18:40,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:18:40,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:18:40,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:18:40,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:18:40,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:18:40,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:18:40,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:18:40,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:18:40,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:18:40,251 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:18:40,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:18:40,252 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:18:40,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:18:40,253 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:18:40,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:18:40,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:18:40,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:18:40,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:18:40,256 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:18:40,257 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:18:40,257 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:18:40,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:18:40,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:18:40,259 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-21 23:18:40,273 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:18:40,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:18:40,274 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:18:40,274 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:18:40,275 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:18:40,275 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:18:40,275 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:18:40,275 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:18:40,275 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:18:40,275 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:18:40,276 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:18:40,276 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:18:40,276 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:18:40,276 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:18:40,276 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:40,276 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:18:40,278 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:18:40,278 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:18:40,278 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:18:40,278 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:18:40,278 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:18:40,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:18:40,279 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:18:40,279 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:18:40,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:18:40,279 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:18:40,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:18:40,280 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:18:40,280 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:18:40,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:18:40,319 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:18:40,322 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:18:40,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:18:40,324 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:18:40,325 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:18:40,399 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/eaa731afcf4e4298a4ec014326e778f6/FLAG68c2d9769 [2020-06-21 23:18:40,736 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:18:40,737 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:18:40,743 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/eaa731afcf4e4298a4ec014326e778f6/FLAG68c2d9769 [2020-06-21 23:18:41,158 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/eaa731afcf4e4298a4ec014326e778f6 [2020-06-21 23:18:41,169 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:18:41,170 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:18:41,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:18:41,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:18:41,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:18:41,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebbd14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:18:41,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:18:41,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:18:41,360 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:18:41,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:18:41,445 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:18:41,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41 WrapperNode [2020-06-21 23:18:41,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:18:41,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:18:41,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:18:41,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:18:41,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:18:41,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:18:41,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:18:41,483 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:18:41,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:18:41,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:18:41,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:18:41,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:18:41,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 23:18:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:18:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:18:41,713 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:18:41,714 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:18:41,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:41 BoogieIcfgContainer [2020-06-21 23:18:41,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:18:41,716 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:18:41,716 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:18:41,718 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:18:41,719 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:41" (1/1) ... [2020-06-21 23:18:41,737 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-21 23:18:41,739 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:18:41,739 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:18:41,740 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:18:41,740 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:18:41,742 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:18:41,743 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:18:41,743 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:18:41,759 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:18:41,767 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 23:18:41,773 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 23:18:41,774 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:18:41,789 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-21 23:18:41,792 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 23:18:41,794 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:18:41,794 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:18:41,794 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:18:41,794 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:18:41,795 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-21 23:18:41,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:41 BasicIcfg [2020-06-21 23:18:41,795 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:18:41,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:18:41,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:18:41,800 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:18:41,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:18:41" (1/4) ... [2020-06-21 23:18:41,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c1538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (2/4) ... [2020-06-21 23:18:41,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c1538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:41" (3/4) ... [2020-06-21 23:18:41,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2c1538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:41" (4/4) ... [2020-06-21 23:18:41,805 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:18:41,816 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:18:41,825 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:18:41,846 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:18:41,878 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:18:41,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:18:41,879 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:18:41,879 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:18:41,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:18:41,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:18:41,880 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:18:41,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:18:41,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:18:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-21 23:18:41,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:18:41,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-21 23:18:41,959 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:18:41,959 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-06-21 23:18:41,959 INFO L451 ceAbstractionStarter]: At program point L21-2(lines 19 26) the Hoare annotation is: true [2020-06-21 23:18:41,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:41 BasicIcfg [2020-06-21 23:18:41,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:18:41,968 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:18:41,969 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:18:41,972 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:18:41,973 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:41,973 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:18:41" (1/5) ... [2020-06-21 23:18:41,974 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15521d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,974 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:41,974 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:18:41" (2/5) ... [2020-06-21 23:18:41,974 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15521d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,975 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:41,975 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:18:41" (3/5) ... [2020-06-21 23:18:41,975 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15521d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,975 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:41,975 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:18:41" (4/5) ... [2020-06-21 23:18:41,976 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15521d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:41, skipping insertion in model container [2020-06-21 23:18:41,976 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:18:41,976 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:18:41" (5/5) ... [2020-06-21 23:18:41,978 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:18:42,005 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:18:42,005 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:18:42,005 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:18:42,006 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:18:42,006 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:18:42,006 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:18:42,006 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:18:42,006 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:18:42,006 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:18:42,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:18:42,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:42,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:42,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:42,034 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:18:42,034 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:42,034 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:18:42,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:18:42,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:42,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:42,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:42,035 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:18:42,036 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:42,041 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 5#L21-2true [2020-06-21 23:18:42,041 INFO L796 eck$LassoCheckResult]: Loop: 5#L21-2true [31] L21-2-->L21: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~z~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 3#L21true [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 (+ v_ULTIMATE.start_main_~z~0_10 (- 1))) (> 0 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 5#L21-2true [2020-06-21 23:18:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-06-21 23:18:42,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:42,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 1 times [2020-06-21 23:18:42,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 55772, now seen corresponding path program 1 times [2020-06-21 23:18:42,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:42,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,211 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:42,212 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:42,212 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:42,213 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:42,213 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:42,213 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:42,213 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:42,213 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:42,213 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:18:42,214 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:42,214 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:42,233 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 23:18:42,248 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 23:18:42,256 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 23:18:42,260 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 23:18:42,357 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:42,358 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 23:18:42,365 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:42,365 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 23:18:42,399 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:42,400 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:42,431 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:42,437 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:42,437 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:42,437 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:42,437 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:42,437 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:42,438 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:42,438 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:42,438 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:42,438 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:18:42,438 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:42,438 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:42,440 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 23:18:42,451 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 23:18:42,458 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 23:18:42,466 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 23:18:42,562 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:42,568 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:42,569 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 23:18:42,571 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:42,571 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:42,572 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:42,572 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:42,572 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:42,574 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:42,575 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:42,582 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:42,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:42,589 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-21 23:18:42,591 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:42,591 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:42,592 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:42,592 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-06-21 23:18:42,593 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:42,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:42,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:42,641 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:42,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:42,663 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 23:18:42,695 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 23:18:42,700 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 23:18:42,701 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-21 23:18:42,734 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-06-21 23:18:42,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-21 23:18:42,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 23:18:42,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:42,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:42,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:42,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-21 23:18:42,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:42,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-06-21 23:18:42,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:42,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-06-21 23:18:42,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-21 23:18:42,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-21 23:18:42,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-06-21 23:18:42,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:42,753 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-21 23:18:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-06-21 23:18:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-21 23:18:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-21 23:18:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-06-21 23:18:42,781 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-21 23:18:42,782 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-21 23:18:42,782 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:18:42,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-06-21 23:18:42,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:18:42,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:42,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:42,783 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 23:18:42,783 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:42,784 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 48#L21-2 [31] L21-2-->L21: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~z~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 43#L21 [24] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 |v_ULTIMATE.start_main_#t~nondet2_3|) (<= 0 v_ULTIMATE.start_main_~y~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~z~0] 44#L21-2 [2020-06-21 23:18:42,784 INFO L796 eck$LassoCheckResult]: Loop: 44#L21-2 [31] L21-2-->L21: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~z~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 49#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 (+ v_ULTIMATE.start_main_~z~0_10 (- 1))) (> 0 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 44#L21-2 [2020-06-21 23:18:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 1 times [2020-06-21 23:18:42,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:42,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 2 times [2020-06-21 23:18:42,801 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:42,809 INFO L82 PathProgramCache]: Analyzing trace with hash 53588277, now seen corresponding path program 1 times [2020-06-21 23:18:42,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:42,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:42,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:18:42,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:42,837 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:42,837 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:42,837 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:42,837 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:42,837 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:42,837 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:42,837 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:42,838 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:42,838 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:18:42,838 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:42,838 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:42,839 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 23:18:42,842 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 23:18:42,845 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 23:18:42,851 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 23:18:42,903 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:42,903 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 23:18:42,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:42,906 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:42,935 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:42,935 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 23:18:42,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:42,940 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:42,966 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:42,966 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 23:18:42,973 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:42,973 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 23:18:43,004 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:43,004 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:43,034 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:43,037 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:43,037 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:43,037 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:43,037 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:43,037 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:43,037 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:43,038 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:43,038 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:43,038 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:18:43,038 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:43,038 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:43,040 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 23:18:43,045 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 23:18:43,053 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 23:18:43,058 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 23:18:43,122 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:43,123 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:43,123 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 23:18:43,124 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:43,125 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:43,125 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:43,125 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:43,128 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:18:43,128 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:18:43,133 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:43,133 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 23:18:43,134 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:43,134 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:43,134 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:43,134 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:43,134 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:43,135 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:43,135 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:43,139 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:43,143 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:43,144 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-21 23:18:43,144 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:43,144 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:43,144 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:43,144 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-06-21 23:18:43,145 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:43,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:43,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:43,190 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:43,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:43,201 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 23:18:43,213 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 23:18:43,214 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 23:18:43,214 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-06-21 23:18:43,231 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 9 states and 13 transitions. Complement of second has 4 states. [2020-06-21 23:18:43,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-21 23:18:43,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:43,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-21 23:18:43,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-21 23:18:43,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-06-21 23:18:43,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:18:43,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-06-21 23:18:43,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-21 23:18:43,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-21 23:18:43,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-21 23:18:43,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:18:43,237 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-21 23:18:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-21 23:18:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-06-21 23:18:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-21 23:18:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-06-21 23:18:43,238 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-21 23:18:43,238 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-21 23:18:43,238 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:18:43,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-06-21 23:18:43,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:18:43,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:18:43,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:18:43,239 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:18:43,240 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:18:43,240 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0] 96#L21-2 [2020-06-21 23:18:43,240 INFO L796 eck$LassoCheckResult]: Loop: 96#L21-2 [31] L21-2-->L21: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~z~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 95#L21 [24] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 |v_ULTIMATE.start_main_#t~nondet2_3|) (<= 0 v_ULTIMATE.start_main_~y~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~z~0] 96#L21-2 [2020-06-21 23:18:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 2 times [2020-06-21 23:18:43,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:43,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:43,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:43,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2020-06-21 23:18:43,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:43,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:43,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:18:43,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 2 times [2020-06-21 23:18:43,255 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:18:43,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:18:43,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:18:43,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:18:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:18:43,289 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:43,289 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:43,289 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:43,289 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:43,289 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:18:43,290 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:18:43,290 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:43,290 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:43,290 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:18:43,290 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:43,291 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:43,292 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 23:18:43,307 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 23:18:43,315 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 23:18:43,321 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 23:18:43,371 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:43,371 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 23:18:43,375 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:43,375 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:43,404 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:43,404 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 23:18:43,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:43,411 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:43,426 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:18:43,427 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=6, ULTIMATE.start_main_~z~0=6} Honda state: {ULTIMATE.start_main_#t~nondet2=6, ULTIMATE.start_main_~z~0=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 23:18:43,458 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:18:43,458 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 23:18:43,491 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:18:43,491 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:18:43,545 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:18:43,548 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:18:43,548 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:18:43,548 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:18:43,548 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:18:43,549 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:18:43,549 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:18:43,549 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:18:43,549 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:18:43,550 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:18:43,550 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:18:43,550 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:18:43,551 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 23:18:43,557 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 23:18:43,560 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 23:18:43,565 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 23:18:43,616 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:18:43,616 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:18:43,617 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 23:18:43,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:43,618 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:43,618 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:43,618 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:43,618 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:43,619 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:43,619 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:43,621 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:43,622 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 23:18:43,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:43,623 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:43,623 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:43,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:43,625 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:18:43,625 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:18:43,630 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:18:43,630 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 23:18:43,631 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:18:43,631 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:18:43,631 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:18:43,631 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:18:43,631 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:18:43,632 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:18:43,632 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:18:43,636 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:18:43,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:18:43,639 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:18:43,639 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:18:43,639 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:18:43,640 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:18:43,640 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-21 23:18:43,640 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:18:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:18:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:43,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:18:43,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:18:43,661 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:18:43,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:18:43,676 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 23:18:43,677 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 23:18:43,677 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 23:18:43,677 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-21 23:18:43,698 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-06-21 23:18:43,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:18:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:18:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-06-21 23:18:43,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 23:18:43,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:18:43,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-21 23:18:43,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:18:43,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-06-21 23:18:43,703 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:18:43,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-06-21 23:18:43,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:18:43,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:18:43,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:18:43,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:18:43,704 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:43,704 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:43,704 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:18:43,704 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 23:18:43,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:18:43,704 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:18:43,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:18:43,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:18:43 BasicIcfg [2020-06-21 23:18:43,710 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:18:43,711 INFO L168 Benchmark]: Toolchain (without parser) took 2541.44 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 564.3 MB in the beginning and 422.4 MB in the end (delta: 141.9 MB). Peak memory consumption was 175.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,713 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:18:43,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 564.3 MB in the beginning and 649.7 MB in the end (delta: -85.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 683.1 MB. Free memory was 649.7 MB in the beginning and 648.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,714 INFO L168 Benchmark]: Boogie Preprocessor took 19.59 ms. Allocated memory is still 683.1 MB. Free memory was 648.3 MB in the beginning and 645.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,715 INFO L168 Benchmark]: RCFGBuilder took 212.30 ms. Allocated memory is still 683.1 MB. Free memory was 645.2 MB in the beginning and 632.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,715 INFO L168 Benchmark]: BlockEncodingV2 took 79.64 ms. Allocated memory is still 683.1 MB. Free memory was 632.3 MB in the beginning and 626.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,716 INFO L168 Benchmark]: TraceAbstraction took 171.49 ms. Allocated memory is still 683.1 MB. Free memory was 626.9 MB in the beginning and 617.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,717 INFO L168 Benchmark]: BuchiAutomizer took 1742.16 ms. Allocated memory is still 683.1 MB. Free memory was 617.5 MB in the beginning and 422.4 MB in the end (delta: 195.1 MB). Peak memory consumption was 195.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:18:43,720 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, 4 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 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 649.6 MB in the beginning and 683.1 MB in the end (delta: 33.6 MB). Free memory was 564.3 MB in the beginning and 649.7 MB in the end (delta: -85.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.70 ms. Allocated memory is still 683.1 MB. Free memory was 649.7 MB in the beginning and 648.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.59 ms. Allocated memory is still 683.1 MB. Free memory was 648.3 MB in the beginning and 645.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 212.30 ms. Allocated memory is still 683.1 MB. Free memory was 645.2 MB in the beginning and 632.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 79.64 ms. Allocated memory is still 683.1 MB. Free memory was 632.3 MB in the beginning and 626.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 171.49 ms. Allocated memory is still 683.1 MB. Free memory was 626.9 MB in the beginning and 617.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1742.16 ms. Allocated memory is still 683.1 MB. Free memory was 617.5 MB in the beginning and 422.4 MB in the end (delta: 195.1 MB). Peak memory consumption was 195.1 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: 19]: 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 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 15 SDslu, 0 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-21 23:18:37.923 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:18:43.953 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check