NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 00:13:26,337 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 00:13:26,340 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 00:13:26,351 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 00:13:26,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 00:13:26,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 00:13:26,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 00:13:26,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 00:13:26,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 00:13:26,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 00:13:26,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 00:13:26,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 00:13:26,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 00:13:26,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 00:13:26,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 00:13:26,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 00:13:26,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 00:13:26,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 00:13:26,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 00:13:26,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 00:13:26,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 00:13:26,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 00:13:26,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 00:13:26,371 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 00:13:26,371 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 00:13:26,372 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 00:13:26,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 00:13:26,373 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 00:13:26,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 00:13:26,374 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 00:13:26,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 00:13:26,376 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 00:13:26,377 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 00:13:26,377 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 00:13:26,377 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 00:13:26,378 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 00:13:26,378 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 00:13:26,379 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 00:13:26,379 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 00:13:26,380 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 00:13:26,394 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 00:13:26,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 00:13:26,395 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 00:13:26,395 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 00:13:26,395 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 00:13:26,395 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:13:26,395 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 00:13:26,396 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 00:13:26,396 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 00:13:26,397 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:13:26,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 00:13:26,397 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 00:13:26,397 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 00:13:26,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 00:13:26,397 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 00:13:26,398 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 00:13:26,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 00:13:26,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 00:13:26,398 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 00:13:26,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 00:13:26,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 00:13:26,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 00:13:26,399 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 00:13:26,399 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 00:13:26,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 00:13:26,437 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 00:13:26,441 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 00:13:26,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 00:13:26,442 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 00:13:26,443 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 00:13:26,509 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/890e9a1673ca417a848152045d15d01b/FLAGa97edeb01 [2020-06-22 00:13:26,835 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 00:13:26,835 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 00:13:26,842 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/890e9a1673ca417a848152045d15d01b/FLAGa97edeb01 [2020-06-22 00:13:27,241 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/890e9a1673ca417a848152045d15d01b [2020-06-22 00:13:27,253 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 00:13:27,254 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 00:13:27,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 00:13:27,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 00:13:27,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 00:13:27,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c11fdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27, skipping insertion in model container [2020-06-22 00:13:27,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 00:13:27,287 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 00:13:27,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:13:27,442 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 00:13:27,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:13:27,530 INFO L195 MainTranslator]: Completed translation [2020-06-22 00:13:27,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27 WrapperNode [2020-06-22 00:13:27,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 00:13:27,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 00:13:27,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 00:13:27,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 00:13:27,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 00:13:27,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 00:13:27,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 00:13:27,566 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 00:13:27,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 00:13:27,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 00:13:27,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 00:13:27,586 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 00:13:27,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (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 [2020-06-22 00:13:27,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 00:13:27,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 00:13:27,776 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 00:13:27,776 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 00:13:27,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:13:27 BoogieIcfgContainer [2020-06-22 00:13:27,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 00:13:27,778 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 00:13:27,779 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 00:13:27,781 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 00:13:27,782 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:13:27" (1/1) ... [2020-06-22 00:13:27,796 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-22 00:13:27,798 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 00:13:27,799 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 00:13:27,799 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 00:13:27,800 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:13:27,803 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 00:13:27,804 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 00:13:27,804 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 00:13:27,819 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 00:13:27,833 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 00:13:27,838 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 00:13:27,841 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:13:27,866 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 00:13:27,868 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 00:13:27,869 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 00:13:27,869 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:13:27,870 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 00:13:27,870 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:13:27,870 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-22 00:13:27,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:13:27 BasicIcfg [2020-06-22 00:13:27,871 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 00:13:27,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 00:13:27,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 00:13:27,875 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 00:13:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 12:13:27" (1/4) ... [2020-06-22 00:13:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157c82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:13:27, skipping insertion in model container [2020-06-22 00:13:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (2/4) ... [2020-06-22 00:13:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157c82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:13:27, skipping insertion in model container [2020-06-22 00:13:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:13:27" (3/4) ... [2020-06-22 00:13:27,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157c82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:13:27, skipping insertion in model container [2020-06-22 00:13:27,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:13:27" (4/4) ... [2020-06-22 00:13:27,879 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:13:27,890 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 00:13:27,898 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 00:13:27,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 00:13:27,946 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:13:27,947 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 00:13:27,947 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 00:13:27,948 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:13:27,948 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:13:27,948 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:13:27,948 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 00:13:27,948 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:13:27,948 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 00:13:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 00:13:27,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 00:13:27,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 00:13:28,021 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 00:13:28,021 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-06-22 00:13:28,022 INFO L451 ceAbstractionStarter]: At program point L10-2(lines 9 13) the Hoare annotation is: true [2020-06-22 00:13:28,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:13:28 BasicIcfg [2020-06-22 00:13:28,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 00:13:28,030 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 00:13:28,030 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 00:13:28,034 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 00:13:28,035 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:13:28,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 12:13:27" (1/5) ... [2020-06-22 00:13:28,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1919ea26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:13:28, skipping insertion in model container [2020-06-22 00:13:28,036 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:13:28,036 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:13:27" (2/5) ... [2020-06-22 00:13:28,036 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1919ea26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:13:28, skipping insertion in model container [2020-06-22 00:13:28,036 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:13:28,036 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:13:27" (3/5) ... [2020-06-22 00:13:28,037 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1919ea26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:13:28, skipping insertion in model container [2020-06-22 00:13:28,037 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:13:28,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:13:27" (4/5) ... [2020-06-22 00:13:28,037 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1919ea26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:13:28, skipping insertion in model container [2020-06-22 00:13:28,038 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:13:28,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:13:28" (5/5) ... [2020-06-22 00:13:28,039 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:13:28,066 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:13:28,066 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 00:13:28,066 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 00:13:28,066 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:13:28,067 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:13:28,067 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:13:28,067 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 00:13:28,067 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:13:28,067 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 00:13:28,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 00:13:28,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:28,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:13:28,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:13:28,094 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:13:28,094 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:13:28,095 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 00:13:28,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 00:13:28,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:28,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:13:28,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:13:28,096 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:13:28,096 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:13:28,101 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L10-2true [2020-06-22 00:13:28,101 INFO L796 eck$LassoCheckResult]: Loop: 5#L10-2true [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 3#L10true [35] L10-->L10-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1)) (> 3 v_ULTIMATE.start_main_~i~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L10-2true [2020-06-22 00:13:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-06-22 00:13:28,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1957, now seen corresponding path program 1 times [2020-06-22 00:13:28,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,189 INFO L82 PathProgramCache]: Analyzing trace with hash 56734, now seen corresponding path program 1 times [2020-06-22 00:13:28,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,241 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:13:28,242 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:13:28,242 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:13:28,242 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:13:28,243 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:13:28,243 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:13:28,243 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:13:28,243 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:13:28,243 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 00:13:28,243 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:13:28,244 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:13:28,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,371 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:13:28,372 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 [2020-06-22 00:13:28,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:13:28,379 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 [2020-06-22 00:13:28,411 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:13:28,412 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:13:28,443 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:13:28,446 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:13:28,446 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:13:28,446 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:13:28,446 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:13:28,447 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:13:28,447 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:13:28,447 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:13:28,447 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:13:28,447 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 00:13:28,447 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:13:28,447 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:13:28,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,558 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:13:28,564 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:13:28,566 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:13:28,567 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:13:28,568 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:13:28,568 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:13:28,568 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:13:28,569 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:13:28,571 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:13:28,571 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:13:28,580 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:13:28,587 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 00:13:28,587 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 00:13:28,589 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:13:28,589 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 00:13:28,590 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:13:28,591 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2020-06-22 00:13:28,592 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 00:13:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:13:28,639 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 00:13:28,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:13:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:13:28,649 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 00:13:28,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:13:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:13:28,664 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 00:13:28,669 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 [2020-06-22 00:13:28,671 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 00:13:28,705 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 8 states and 14 transitions. Complement of second has 4 states. [2020-06-22 00:13:28,706 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 [2020-06-22 00:13:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 00:13:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-06-22 00:13:28,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 00:13:28,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:28,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 00:13:28,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:28,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 00:13:28,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:28,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 14 transitions. [2020-06-22 00:13:28,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:28,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 14 transitions. [2020-06-22 00:13:28,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 00:13:28,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 00:13:28,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 14 transitions. [2020-06-22 00:13:28,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 00:13:28,726 INFO L706 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-06-22 00:13:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 14 transitions. [2020-06-22 00:13:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-06-22 00:13:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 00:13:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-06-22 00:13:28,756 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-06-22 00:13:28,756 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-06-22 00:13:28,756 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 00:13:28,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-06-22 00:13:28,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:28,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:13:28,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:13:28,757 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 00:13:28,757 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:13:28,758 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 48#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 42#L10 [2020-06-22 00:13:28,758 INFO L796 eck$LassoCheckResult]: Loop: 42#L10 [36] L10-->L10-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 1)) (< 3 v_ULTIMATE.start_main_~i~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 43#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 42#L10 [2020-06-22 00:13:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1829, now seen corresponding path program 1 times [2020-06-22 00:13:28,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2108, now seen corresponding path program 1 times [2020-06-22 00:13:28,765 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1758816, now seen corresponding path program 1 times [2020-06-22 00:13:28,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:28,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:28,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:28,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:28,796 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:13:28,796 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:13:28,796 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:13:28,796 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:13:28,796 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:13:28,796 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:13:28,797 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:13:28,797 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:13:28,797 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 00:13:28,797 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:13:28,797 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:13:28,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,850 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:13:28,851 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 [2020-06-22 00:13:28,854 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:13:28,854 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:13:28,882 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:13:28,883 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 [2020-06-22 00:13:28,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:13:28,888 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:13:28,915 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:13:28,915 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 [2020-06-22 00:13:28,924 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:13:28,924 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 [2020-06-22 00:13:28,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:13:28,955 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:13:28,989 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:13:28,991 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:13:28,991 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:13:28,991 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:13:28,991 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:13:28,991 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:13:28,992 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:13:28,992 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:13:28,992 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:13:28,992 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 00:13:28,992 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:13:28,992 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:13:28,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:28,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:29,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:13:29,048 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:13:29,048 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:13:29,048 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:13:29,049 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:13:29,049 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:13:29,049 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:13:29,050 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:13:29,052 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:13:29,053 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:13:29,057 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:13:29,058 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:13:29,058 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:13:29,058 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:13:29,059 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:13:29,059 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:13:29,061 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:13:29,061 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:13:29,068 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:13:29,068 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:13:29,069 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:13:29,069 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:13:29,069 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:13:29,069 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:13:29,069 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:13:29,070 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:13:29,070 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:13:29,075 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:13:29,081 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 00:13:29,081 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 00:13:29,082 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:13:29,082 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 00:13:29,082 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:13:29,082 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2020-06-22 00:13:29,083 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 00:13:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:13:29,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 00:13:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:13:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:13:29,109 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 00:13:29,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:13:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:13:29,136 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 00:13:29,136 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 [2020-06-22 00:13:29,137 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-06-22 00:13:29,173 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 23 states and 42 transitions. Complement of second has 9 states. [2020-06-22 00:13:29,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 00:13:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 00:13:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-06-22 00:13:29,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2020-06-22 00:13:29,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:29,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-22 00:13:29,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:29,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2020-06-22 00:13:29,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:13:29,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 42 transitions. [2020-06-22 00:13:29,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:29,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 17 states and 30 transitions. [2020-06-22 00:13:29,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-06-22 00:13:29,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-06-22 00:13:29,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 30 transitions. [2020-06-22 00:13:29,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 00:13:29,182 INFO L706 BuchiCegarLoop]: Abstraction has 17 states and 30 transitions. [2020-06-22 00:13:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 30 transitions. [2020-06-22 00:13:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2020-06-22 00:13:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-06-22 00:13:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 24 transitions. [2020-06-22 00:13:29,184 INFO L729 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-06-22 00:13:29,184 INFO L609 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-06-22 00:13:29,184 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 00:13:29,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 24 transitions. [2020-06-22 00:13:29,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:13:29,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:13:29,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:13:29,186 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 00:13:29,186 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:13:29,186 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L10-2: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 117#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 121#L10 [26] L10-->L10-2: Formula: (= 3 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 118#L10-2 [2020-06-22 00:13:29,186 INFO L796 eck$LassoCheckResult]: Loop: 118#L10-2 [31] L10-2-->L10: Formula: (< v_ULTIMATE.start_main_~i~0_7 10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 119#L10 [26] L10-->L10-2: Formula: (= 3 v_ULTIMATE.start_main_~i~0_10) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 118#L10-2 [2020-06-22 00:13:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:29,187 INFO L82 PathProgramCache]: Analyzing trace with hash 56725, now seen corresponding path program 1 times [2020-06-22 00:13:29,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:29,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:29,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:29,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1948, now seen corresponding path program 1 times [2020-06-22 00:13:29,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:29,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:29,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:29,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:13:29,218 INFO L82 PathProgramCache]: Analyzing trace with hash 54513712, now seen corresponding path program 2 times [2020-06-22 00:13:29,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:13:29,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:13:29,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:13:29,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:13:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:13:29,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:13:29 BasicIcfg [2020-06-22 00:13:29,264 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 00:13:29,265 INFO L168 Benchmark]: Toolchain (without parser) took 2011.32 ms. Allocated memory was 649.6 MB in the beginning and 704.1 MB in the end (delta: 54.5 MB). Free memory was 558.7 MB in the beginning and 513.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 100.1 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,266 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 00:13:29,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 ms. Allocated memory was 649.6 MB in the beginning and 704.1 MB in the end (delta: 54.5 MB). Free memory was 558.7 MB in the beginning and 668.0 MB in the end (delta: -109.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 704.1 MB. Free memory was 668.0 MB in the beginning and 666.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,268 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 704.1 MB. Free memory was 666.9 MB in the beginning and 665.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,269 INFO L168 Benchmark]: RCFGBuilder took 192.14 ms. Allocated memory is still 704.1 MB. Free memory was 665.8 MB in the beginning and 653.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,270 INFO L168 Benchmark]: BlockEncodingV2 took 92.52 ms. Allocated memory is still 704.1 MB. Free memory was 653.3 MB in the beginning and 647.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,270 INFO L168 Benchmark]: TraceAbstraction took 158.05 ms. Allocated memory is still 704.1 MB. Free memory was 647.9 MB in the beginning and 639.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,271 INFO L168 Benchmark]: BuchiAutomizer took 1233.74 ms. Allocated memory is still 704.1 MB. Free memory was 638.1 MB in the beginning and 513.1 MB in the end (delta: 125.0 MB). Peak memory consumption was 125.0 MB. Max. memory is 50.3 GB. [2020-06-22 00:13:29,275 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 580.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 275.62 ms. Allocated memory was 649.6 MB in the beginning and 704.1 MB in the end (delta: 54.5 MB). Free memory was 558.7 MB in the beginning and 668.0 MB in the end (delta: -109.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 704.1 MB. Free memory was 668.0 MB in the beginning and 666.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 704.1 MB. Free memory was 666.9 MB in the beginning and 665.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 192.14 ms. Allocated memory is still 704.1 MB. Free memory was 665.8 MB in the beginning and 653.3 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 92.52 ms. Allocated memory is still 704.1 MB. Free memory was 653.3 MB in the beginning and 647.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 158.05 ms. Allocated memory is still 704.1 MB. Free memory was 647.9 MB in the beginning and 639.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1233.74 ms. Allocated memory is still 704.1 MB. Free memory was 638.1 MB in the beginning and 513.1 MB in the end (delta: 125.0 MB). Peak memory consumption was 125.0 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -2 * i + 5 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 14 SDslu, 0 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax206 hnf100 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23e9cd73=0, \result=0, i=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 10 [L10] COND FALSE !(i != 3) Loop: [L9] COND TRUE i < 10 [L10] COND FALSE !(i != 3) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 00:13:24.021 ----------------------------------------------- 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 2020-06-22 00:13:29.514 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check