YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:52:54,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:52:54,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:52:54,889 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:52:54,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:52:54,890 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:52:54,891 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:52:54,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:52:54,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:52:54,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:52:54,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:52:54,896 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:52:54,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:52:54,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:52:54,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:52:54,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:52:54,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:52:54,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:52:54,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:52:54,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:52:54,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:52:54,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:52:54,909 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:52:54,909 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:52:54,909 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:52:54,910 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:52:54,911 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:52:54,912 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:52:54,912 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:52:54,912 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:52:54,913 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:52:54,914 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:52:54,915 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:52:54,915 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:52:54,916 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:52:54,916 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:52:54,916 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:52:54,917 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:52:54,918 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:52:54,918 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 23:52:54,932 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:52:54,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:52:54,933 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:52:54,934 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:52:54,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:52:54,934 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:52:54,934 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:52:54,934 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:52:54,935 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:54,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:52:54,936 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:52:54,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:52:54,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:52:54,936 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:52:54,936 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:52:54,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:52:54,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:52:54,937 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:52:54,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:52:54,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:52:54,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:52:54,938 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:52:54,938 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:52:54,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:52:54,977 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:52:54,980 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:52:54,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:52:54,982 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:52:54,983 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:52:55,059 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/77f47be1fa6248d489314ac97e819582/FLAGee44f8dc7 [2020-06-21 23:52:55,434 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:52:55,435 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:52:55,441 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/77f47be1fa6248d489314ac97e819582/FLAGee44f8dc7 [2020-06-21 23:52:55,822 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/77f47be1fa6248d489314ac97e819582 [2020-06-21 23:52:55,834 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:52:55,836 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:52:55,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:52:55,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:52:55,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:52:55,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:52:55" (1/1) ... [2020-06-21 23:52:55,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1540542b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:55, skipping insertion in model container [2020-06-21 23:52:55,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:52:55" (1/1) ... [2020-06-21 23:52:55,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:52:55,871 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:52:56,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:52:56,032 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:52:56,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:52:56,122 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:52:56,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56 WrapperNode [2020-06-21 23:52:56,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:52:56,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:52:56,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:52:56,124 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:52:56,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:52:56,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:52:56,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:52:56,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:52:56,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:52:56,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:52:56,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:52:56,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:52:56,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:52:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:52:56,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:52:56,373 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:52:56,374 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-21 23:52:56,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:52:56 BoogieIcfgContainer [2020-06-21 23:52:56,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:52:56,376 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:52:56,376 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:52:56,378 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:52:56,379 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:52:56" (1/1) ... [2020-06-21 23:52:56,393 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-21 23:52:56,394 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:52:56,395 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:52:56,396 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:52:56,396 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:52:56,398 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:52:56,399 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:52:56,399 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:52:56,413 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:52:56,421 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 23:52:56,426 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-21 23:52:56,428 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:52:56,445 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-06-21 23:52:56,447 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-21 23:52:56,448 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:52:56,449 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:52:56,449 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:52:56,449 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:52:56,449 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-21 23:52:56,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:52:56 BasicIcfg [2020-06-21 23:52:56,450 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:52:56,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:52:56,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:52:56,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:52:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:52:55" (1/4) ... [2020-06-21 23:52:56,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730b986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (2/4) ... [2020-06-21 23:52:56,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730b986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:52:56" (3/4) ... [2020-06-21 23:52:56,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730b986e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:52:56" (4/4) ... [2020-06-21 23:52:56,458 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:52:56,469 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:52:56,477 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:52:56,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:52:56,522 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:52:56,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:52:56,523 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:52:56,523 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:52:56,523 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:52:56,523 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:52:56,523 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:52:56,523 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:52:56,524 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:52:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-21 23:52:56,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:52:56,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-21 23:52:56,600 INFO L451 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: true [2020-06-21 23:52:56,600 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:52:56,601 INFO L451 ceAbstractionStarter]: At program point L13-2(lines 13 25) the Hoare annotation is: true [2020-06-21 23:52:56,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:52:56 BasicIcfg [2020-06-21 23:52:56,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:52:56,610 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:52:56,610 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:52:56,613 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:52:56,614 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:52:56,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:52:55" (1/5) ... [2020-06-21 23:52:56,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,615 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:52:56,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:52:56" (2/5) ... [2020-06-21 23:52:56,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,616 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:52:56,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:52:56" (3/5) ... [2020-06-21 23:52:56,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,616 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:52:56,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:52:56" (4/5) ... [2020-06-21 23:52:56,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:52:56, skipping insertion in model container [2020-06-21 23:52:56,617 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:52:56,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:52:56" (5/5) ... [2020-06-21 23:52:56,618 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:52:56,645 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:52:56,645 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:52:56,646 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:52:56,646 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:52:56,646 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:52:56,646 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:52:56,646 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:52:56,646 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:52:56,647 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:52:56,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:52:56,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:52:56,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:52:56,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:52:56,673 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:52:56,673 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:52:56,673 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:52:56,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-21 23:52:56,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-21 23:52:56,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:52:56,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:52:56,674 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:52:56,674 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-21 23:52:56,680 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [35] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~res~0_1 0) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_1, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~restmp~0, ULTIMATE.start_main_~xtmp~0] 5#L13-2true [2020-06-21 23:52:56,680 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-2true [38] L13-2-->L17-2: Formula: (and (< 1 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~xtmp~0_8 (+ v_ULTIMATE.start_main_~x~0_8 (- 2))) (= v_ULTIMATE.start_main_~restmp~0_6 0)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_6, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~restmp~0, ULTIMATE.start_main_~xtmp~0] 3#L17-2true [45] L17-2-->L13-2: Formula: (and (= (+ v_ULTIMATE.start_main_~res~0_9 1) v_ULTIMATE.start_main_~res~0_8) (= (+ v_ULTIMATE.start_main_~xtmp~0_9 1) v_ULTIMATE.start_main_~x~0_10) (<= v_ULTIMATE.start_main_~xtmp~0_9 1)) InVars {ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_9, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_9} OutVars{ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~x~0] 5#L13-2true [2020-06-21 23:52:56,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 66, now seen corresponding path program 1 times [2020-06-21 23:52:56,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:56,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:56,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:56,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:56,759 INFO L82 PathProgramCache]: Analyzing trace with hash 2184, now seen corresponding path program 1 times [2020-06-21 23:52:56,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:56,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:56,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:56,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash 64649, now seen corresponding path program 1 times [2020-06-21 23:52:56,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:56,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:56,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:56,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:56,862 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:52:56,863 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:52:56,863 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:52:56,863 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:52:56,864 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:52:56,864 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:56,864 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:52:56,864 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:52:56,864 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:52:56,864 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:52:56,865 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:52:56,884 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 23:52:56,907 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 23:52:56,911 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 23:52:56,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:52:56,920 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 23:52:57,027 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:52:57,028 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:52:57,036 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,074 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:52:57,074 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:52:57,438 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:52:57,441 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:52:57,441 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:52:57,442 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:52:57,442 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:52:57,442 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:52:57,442 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:52:57,442 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:52:57,442 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:52:57,442 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:52:57,442 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:52:57,443 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:52:57,445 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 23:52:57,448 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 23:52:57,461 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 23:52:57,468 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 23:52:57,472 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 23:52:57,555 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:52:57,561 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:52:57,563 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 23:52:57,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:57,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:57,565 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:57,565 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:57,570 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:52:57,570 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:52:57,579 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:52:57,580 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 23:52:57,581 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:57,581 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:52:57,581 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:57,581 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:57,582 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:57,583 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:52:57,583 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:52:57,593 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:52:57,601 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:52:57,601 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:52:57,604 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:52:57,604 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:52:57,604 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:52:57,605 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-21 23:52:57,606 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:52:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:52:57,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:52:57,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:52:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:52:57,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-21 23:52:57,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:52:57,681 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 23:52:57,709 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:52:57,714 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-21 23:52:57,715 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-21 23:52:57,754 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-06-21 23:52:57,754 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 23:52:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:52:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-06-21 23:52:57,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-21 23:52:57,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:57,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-21 23:52:57,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:57,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-21 23:52:57,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:57,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-06-21 23:52:57,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 23:52:57,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-06-21 23:52:57,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-21 23:52:57,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-21 23:52:57,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-06-21 23:52:57,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:52:57,773 INFO L706 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-06-21 23:52:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-06-21 23:52:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-06-21 23:52:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-21 23:52:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-06-21 23:52:57,801 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 23:52:57,801 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-06-21 23:52:57,801 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:52:57,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-06-21 23:52:57,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-06-21 23:52:57,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:52:57,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:52:57,803 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:52:57,803 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-06-21 23:52:57,803 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [35] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~res~0_1 0) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_1, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~restmp~0, ULTIMATE.start_main_~xtmp~0] 48#L13-2 [38] L13-2-->L17-2: Formula: (and (< 1 v_ULTIMATE.start_main_~x~0_8) (= v_ULTIMATE.start_main_~xtmp~0_8 (+ v_ULTIMATE.start_main_~x~0_8 (- 2))) (= v_ULTIMATE.start_main_~restmp~0_6 0)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_6, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~restmp~0, ULTIMATE.start_main_~xtmp~0] 44#L17-2 [2020-06-21 23:52:57,803 INFO L796 eck$LassoCheckResult]: Loop: 44#L17-2 [33] L17-2-->L17-2: Formula: (and (< 1 v_ULTIMATE.start_main_~xtmp~0_6) (= v_ULTIMATE.start_main_~xtmp~0_5 (+ v_ULTIMATE.start_main_~xtmp~0_6 (- 2))) (= v_ULTIMATE.start_main_~restmp~0_4 (+ v_ULTIMATE.start_main_~restmp~0_5 1))) InVars {ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_5, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_6} OutVars{ULTIMATE.start_main_~restmp~0=v_ULTIMATE.start_main_~restmp~0_4, ULTIMATE.start_main_~xtmp~0=v_ULTIMATE.start_main_~xtmp~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~restmp~0, ULTIMATE.start_main_~xtmp~0] 44#L17-2 [2020-06-21 23:52:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2084, now seen corresponding path program 1 times [2020-06-21 23:52:57,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:57,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:57,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:57,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2020-06-21 23:52:57,812 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:57,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:57,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:57,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:57,819 INFO L82 PathProgramCache]: Analyzing trace with hash 64637, now seen corresponding path program 1 times [2020-06-21 23:52:57,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:52:57,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:52:57,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:52:57,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:52:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:52:57,842 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:52:57,843 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:52:57,843 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:52:57,843 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:52:57,843 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:52:57,843 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,843 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:52:57,844 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:52:57,844 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:52:57,844 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:52:57,844 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:52:57,845 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 23:52:57,849 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 23:52:57,853 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 23:52:57,856 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 23:52:57,913 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:52:57,913 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:52:57,919 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:52:57,956 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:52:57,956 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/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:52:57,966 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:57,999 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:52:57,999 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:52:58,017 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:52:58,018 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=0}, {ULTIMATE.start_main_~restmp~0=-5}, {ULTIMATE.start_main_~restmp~0=6}] Lambdas: [0, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:58,047 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:52:58,047 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:52:58,076 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:52:58,076 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/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-06-21 23:52:58,085 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:58,086 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:52:58,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:52:58,125 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:52:58,157 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:52:58,159 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:52:58,159 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:52:58,159 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:52:58,159 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:52:58,159 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:52:58,159 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:52:58,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:52:58,160 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:52:58,160 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:52:58,160 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:52:58,160 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:52:58,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:52:58,166 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 23:52:58,169 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 23:52:58,172 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 23:52:58,225 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:52:58,225 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:52:58,226 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 23:52:58,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:58,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:58,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:58,227 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:58,229 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:52:58,230 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:52:58,235 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:52:58,235 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 23:52:58,236 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:58,236 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:52:58,236 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:58,237 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:58,237 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:58,237 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:52:58,237 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:52:58,241 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:52:58,241 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 23:52:58,242 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:58,242 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:58,242 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:58,242 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:58,244 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:52:58,244 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:52:58,251 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:52:58,251 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 23:52:58,252 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:52:58,252 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:52:58,252 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:52:58,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:52:58,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:52:58,253 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:52:58,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:52:58,258 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:52:58,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:52:58,262 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:52:58,262 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:52:58,262 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:52:58,263 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:52:58,263 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2020-06-21 23:52:58,264 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:52:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:52:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:52:58,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:52:58,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:52:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:52:58,296 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:52:58,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:52:58,297 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 23:52:58,297 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-21 23:52:58,298 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 1 loop predicates [2020-06-21 23:52:58,298 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-06-21 23:52:58,306 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-06-21 23:52:58,307 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 23:52:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-06-21 23:52:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-21 23:52:58,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 1 letters. [2020-06-21 23:52:58,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:58,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-06-21 23:52:58,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:58,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-21 23:52:58,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:52:58,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-06-21 23:52:58,311 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:52:58,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2020-06-21 23:52:58,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:52:58,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:52:58,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:52:58,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:52:58,312 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:52:58,312 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:52:58,312 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:52:58,312 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:52:58,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:52:58,313 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:52:58,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:52:58,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:52:58 BasicIcfg [2020-06-21 23:52:58,319 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:52:58,320 INFO L168 Benchmark]: Toolchain (without parser) took 2485.09 ms. Allocated memory was 649.6 MB in the beginning and 662.2 MB in the end (delta: 12.6 MB). Free memory was 565.3 MB in the beginning and 445.2 MB in the end (delta: 120.1 MB). Peak memory consumption was 132.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,321 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:52:58,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.57 ms. Allocated memory was 649.6 MB in the beginning and 662.2 MB in the end (delta: 12.6 MB). Free memory was 565.3 MB in the beginning and 629.9 MB in the end (delta: -64.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 662.2 MB. Free memory was 629.9 MB in the beginning and 628.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,323 INFO L168 Benchmark]: Boogie Preprocessor took 19.11 ms. Allocated memory is still 662.2 MB. Free memory was 628.8 MB in the beginning and 626.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,324 INFO L168 Benchmark]: RCFGBuilder took 197.28 ms. Allocated memory is still 662.2 MB. Free memory was 624.9 MB in the beginning and 612.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,324 INFO L168 Benchmark]: BlockEncodingV2 took 74.40 ms. Allocated memory is still 662.2 MB. Free memory was 612.3 MB in the beginning and 606.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,325 INFO L168 Benchmark]: TraceAbstraction took 158.50 ms. Allocated memory is still 662.2 MB. Free memory was 606.9 MB in the beginning and 596.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,325 INFO L168 Benchmark]: BuchiAutomizer took 1709.36 ms. Allocated memory is still 662.2 MB. Free memory was 595.9 MB in the beginning and 445.2 MB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:52:58,330 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 286.57 ms. Allocated memory was 649.6 MB in the beginning and 662.2 MB in the end (delta: 12.6 MB). Free memory was 565.3 MB in the beginning and 629.9 MB in the end (delta: -64.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 662.2 MB. Free memory was 629.9 MB in the beginning and 628.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.11 ms. Allocated memory is still 662.2 MB. Free memory was 628.8 MB in the beginning and 626.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * RCFGBuilder took 197.28 ms. Allocated memory is still 662.2 MB. Free memory was 624.9 MB in the beginning and 612.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.40 ms. Allocated memory is still 662.2 MB. Free memory was 612.3 MB in the beginning and 606.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 158.50 ms. Allocated memory is still 662.2 MB. Free memory was 606.9 MB in the beginning and 596.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1709.36 ms. Allocated memory is still 662.2 MB. Free memory was 595.9 MB in the beginning and 445.2 MB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax163 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf93 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-21 23:52:52.575 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:52:58.562 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check