NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 09:26:24,263 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 09:26:24,265 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 09:26:24,276 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 09:26:24,276 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 09:26:24,277 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 09:26:24,278 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 09:26:24,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 09:26:24,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 09:26:24,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 09:26:24,283 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 09:26:24,283 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 09:26:24,284 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 09:26:24,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 09:26:24,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 09:26:24,286 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 09:26:24,287 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 09:26:24,289 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 09:26:24,291 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 09:26:24,292 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 09:26:24,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 09:26:24,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 09:26:24,296 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 09:26:24,297 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 09:26:24,297 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 09:26:24,298 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 09:26:24,298 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 09:26:24,299 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 09:26:24,299 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 09:26:24,300 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 09:26:24,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 09:26:24,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 09:26:24,302 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 09:26:24,302 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 09:26:24,303 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 09:26:24,303 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 09:26:24,303 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 09:26:24,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 09:26:24,305 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 09:26:24,305 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 09:26:24,319 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 09:26:24,319 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 09:26:24,320 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 09:26:24,320 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 09:26:24,320 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 09:26:24,321 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 09:26:24,321 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 09:26:24,322 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 09:26:24,322 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 09:26:24,322 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:24,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 09:26:24,322 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 09:26:24,322 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 09:26:24,323 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 09:26:24,323 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 09:26:24,323 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 09:26:24,323 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 09:26:24,323 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 09:26:24,323 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 09:26:24,324 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 09:26:24,324 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 09:26:24,324 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 09:26:24,324 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 09:26:24,324 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 09:26:24,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 09:26:24,362 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 09:26:24,366 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 09:26:24,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 09:26:24,368 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 09:26:24,368 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 09:26:24,431 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/b890e27f118f457487ff636b244fed4b/FLAGfd6f9ee4e [2020-06-22 09:26:24,758 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 09:26:24,759 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 09:26:24,766 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/b890e27f118f457487ff636b244fed4b/FLAGfd6f9ee4e [2020-06-22 09:26:25,212 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/b890e27f118f457487ff636b244fed4b [2020-06-22 09:26:25,224 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 09:26:25,225 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 09:26:25,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 09:26:25,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 09:26:25,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 09:26:25,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595cfe65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25, skipping insertion in model container [2020-06-22 09:26:25,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 09:26:25,261 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 09:26:25,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 09:26:25,422 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 09:26:25,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 09:26:25,512 INFO L195 MainTranslator]: Completed translation [2020-06-22 09:26:25,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25 WrapperNode [2020-06-22 09:26:25,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 09:26:25,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 09:26:25,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 09:26:25,514 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 09:26:25,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 09:26:25,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 09:26:25,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 09:26:25,549 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 09:26:25,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 09:26:25,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 09:26:25,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 09:26:25,569 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 09:26:25,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 09:26:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 09:26:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 09:26:25,766 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 09:26:25,766 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 09:26:25,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:26:25 BoogieIcfgContainer [2020-06-22 09:26:25,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 09:26:25,768 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 09:26:25,769 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 09:26:25,771 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 09:26:25,771 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:26:25" (1/1) ... [2020-06-22 09:26:25,785 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-06-22 09:26:25,786 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 09:26:25,787 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 09:26:25,788 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 09:26:25,788 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 09:26:25,790 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 09:26:25,791 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 09:26:25,791 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 09:26:25,807 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 09:26:25,822 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-22 09:26:25,826 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 09:26:25,828 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 09:26:25,841 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 09:26:25,843 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 09:26:25,844 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 09:26:25,844 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 09:26:25,844 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 09:26:25,845 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 09:26:25,845 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 10 edges [2020-06-22 09:26:25,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 09:26:25 BasicIcfg [2020-06-22 09:26:25,846 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 09:26:25,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 09:26:25,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 09:26:25,850 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 09:26:25,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 09:26:25" (1/4) ... [2020-06-22 09:26:25,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15773724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:26:25, skipping insertion in model container [2020-06-22 09:26:25,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (2/4) ... [2020-06-22 09:26:25,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15773724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:26:25, skipping insertion in model container [2020-06-22 09:26:25,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:26:25" (3/4) ... [2020-06-22 09:26:25,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15773724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:26:25, skipping insertion in model container [2020-06-22 09:26:25,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 09:26:25" (4/4) ... [2020-06-22 09:26:25,853 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 09:26:25,863 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 09:26:25,870 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 09:26:25,887 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 09:26:25,915 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 09:26:25,916 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 09:26:25,916 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 09:26:25,917 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 09:26:25,917 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 09:26:25,917 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 09:26:25,917 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 09:26:25,917 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 09:26:25,917 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 09:26:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-06-22 09:26:25,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 09:26:25,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-06-22 09:26:25,988 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 24) no Hoare annotation was computed. [2020-06-22 09:26:25,988 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 27) no Hoare annotation was computed. [2020-06-22 09:26:25,989 INFO L451 ceAbstractionStarter]: At program point L15-1(lines 14 28) the Hoare annotation is: true [2020-06-22 09:26:25,989 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 09:26:25,989 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-06-22 09:26:25,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:26:25 BasicIcfg [2020-06-22 09:26:25,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 09:26:25,999 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 09:26:25,999 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 09:26:26,002 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 09:26:26,003 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 09:26:26,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 09:26:25" (1/5) ... [2020-06-22 09:26:26,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ffa377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 09:26:26, skipping insertion in model container [2020-06-22 09:26:26,004 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 09:26:26,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 09:26:25" (2/5) ... [2020-06-22 09:26:26,005 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ffa377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 09:26:26, skipping insertion in model container [2020-06-22 09:26:26,005 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 09:26:26,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:26:25" (3/5) ... [2020-06-22 09:26:26,006 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ffa377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 09:26:26, skipping insertion in model container [2020-06-22 09:26:26,006 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 09:26:26,006 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 09:26:25" (4/5) ... [2020-06-22 09:26:26,006 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ffa377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 09:26:26, skipping insertion in model container [2020-06-22 09:26:26,006 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 09:26:26,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:26:25" (5/5) ... [2020-06-22 09:26:26,008 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 09:26:26,034 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 09:26:26,035 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 09:26:26,035 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 09:26:26,035 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 09:26:26,035 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 09:26:26,035 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 09:26:26,035 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 09:26:26,036 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 09:26:26,036 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 09:26:26,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 09:26:26,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 09:26:26,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 09:26:26,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 09:26:26,065 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 09:26:26,065 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 09:26:26,065 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 09:26:26,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-06-22 09:26:26,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 09:26:26,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 09:26:26,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 09:26:26,067 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 09:26:26,067 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 09:26:26,073 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [37] ULTIMATE.startENTRY-->L15-1: Formula: true InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 7#L15-1true [2020-06-22 09:26:26,073 INFO L796 eck$LassoCheckResult]: Loop: 7#L15-1true [52] L15-1-->L15: Formula: (< 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 3#L15true [54] L15-->L15-1: Formula: (and (= v_ULTIMATE.start_main_~x~0_14 0) (> v_ULTIMATE.start_main_~x~0_15 35)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_15} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 7#L15-1true [2020-06-22 09:26:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,080 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-06-22 09:26:26,083 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2627, now seen corresponding path program 1 times [2020-06-22 09:26:26,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 67014, now seen corresponding path program 1 times [2020-06-22 09:26:26,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,207 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 09:26:26,208 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 09:26:26,208 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 09:26:26,209 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 09:26:26,209 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 09:26:26,209 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,209 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 09:26:26,209 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 09:26:26,209 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 09:26:26,210 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 09:26:26,210 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 09:26:26,229 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 09:26:26,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 09:26:26,244 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 09:26:26,313 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 09:26:26,314 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:26,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:26,352 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 09:26:26,352 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,359 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:26,359 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:26,388 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 09:26:26,388 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,393 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:26,393 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,424 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 09:26:26,425 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:26,459 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 09:26:26,462 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 09:26:26,462 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 09:26:26,462 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 09:26:26,462 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 09:26:26,462 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 09:26:26,462 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 09:26:26,462 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 09:26:26,462 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 09:26:26,463 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 09:26:26,463 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 09:26:26,463 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 09:26:26,465 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 09:26:26,474 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 09:26:26,478 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 09:26:26,526 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 09:26:26,532 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 09:26:26,533 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 09:26:26,535 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 09:26:26,535 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 09:26:26,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 09:26:26,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 09:26:26,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 09:26:26,538 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 09:26:26,538 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 09:26:26,549 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 09:26:26,554 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 09:26:26,554 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 09:26:26,556 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 09:26:26,556 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 09:26:26,557 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 09:26:26,558 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 09:26:26,559 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 09:26:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:26,594 WARN L254 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 09:26:26,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:26,606 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 09:26:26,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:26,626 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 09:26:26,639 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 09:26:26,644 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 09:26:26,646 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 3 states. [2020-06-22 09:26:26,775 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 3 states. Result 34 states and 68 transitions. Complement of second has 8 states. [2020-06-22 09:26:26,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-06-22 09:26:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 09:26:26,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2020-06-22 09:26:26,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 09:26:26,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:26,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 09:26:26,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:26,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 09:26:26,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:26,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 68 transitions. [2020-06-22 09:26:26,792 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2020-06-22 09:26:26,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 68 transitions. [2020-06-22 09:26:26,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-06-22 09:26:26,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-06-22 09:26:26,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 68 transitions. [2020-06-22 09:26:26,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 09:26:26,800 INFO L706 BuchiCegarLoop]: Abstraction has 34 states and 68 transitions. [2020-06-22 09:26:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 68 transitions. [2020-06-22 09:26:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-06-22 09:26:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-06-22 09:26:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 61 transitions. [2020-06-22 09:26:26,833 INFO L729 BuchiCegarLoop]: Abstraction has 30 states and 61 transitions. [2020-06-22 09:26:26,833 INFO L609 BuchiCegarLoop]: Abstraction has 30 states and 61 transitions. [2020-06-22 09:26:26,833 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 09:26:26,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 61 transitions. [2020-06-22 09:26:26,834 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2020-06-22 09:26:26,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 09:26:26,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 09:26:26,835 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 09:26:26,835 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-22 09:26:26,836 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L15-1: Formula: true InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 86#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 95#L15 [2020-06-22 09:26:26,836 INFO L796 eck$LassoCheckResult]: Loop: 95#L15 [35] L15-->L16: Formula: (and (<= v_ULTIMATE.start_main_~x~0_6 35) (<= 0 (+ v_ULTIMATE.start_main_~x~0_6 5))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 101#L16 [50] L16-->L19: Formula: (>= v_ULTIMATE.start_main_~x~0_9 0) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[] 107#L19 [51] L19-->L15-1: Formula: (and (>= 30 v_ULTIMATE.start_main_~x~0_13) (= v_ULTIMATE.start_main_~x~0_12 (+ v_ULTIMATE.start_main_~x~0_13 (- 1)))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 106#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 95#L15 [2020-06-22 09:26:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 1 times [2020-06-22 09:26:26,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2015890, now seen corresponding path program 1 times [2020-06-22 09:26:26,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1996821250, now seen corresponding path program 1 times [2020-06-22 09:26:26,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:26,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 09:26:26,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 09:26:26,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 09:26:26,913 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 09:26:26,913 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 09:26:26,913 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 09:26:26,913 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 09:26:26,914 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 09:26:26,914 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,914 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 09:26:26,914 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 09:26:26,914 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 09:26:26,914 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 09:26:26,914 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 09:26:26,916 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 09:26:26,921 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 09:26:26,925 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 09:26:26,975 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 09:26:26,975 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:26,983 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:26,983 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:27,011 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 09:26:27,011 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 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 09:26:27,015 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:27,016 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:27,042 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 09:26:27,042 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:27,047 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 09:26:27,047 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 09:26:27,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 09:26:27,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 09:26:27,106 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 09:26:27,108 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 09:26:27,108 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 09:26:27,109 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 09:26:27,109 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 09:26:27,109 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 09:26:27,109 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 09:26:27,109 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 09:26:27,109 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 09:26:27,109 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 09:26:27,109 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 09:26:27,110 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 09:26:27,111 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 09:26:27,114 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 09:26:27,118 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 09:26:27,166 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 09:26:27,167 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 09:26:27,167 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 09:26:27,168 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 09:26:27,168 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 09:26:27,168 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 09:26:27,169 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 09:26:27,172 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 09:26:27,172 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 09:26:27,177 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 09:26:27,178 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 09:26:27,179 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 09:26:27,179 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 09:26:27,179 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 09:26:27,179 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 09:26:27,181 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 09:26:27,181 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 09:26:27,190 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 09:26:27,191 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 09:26:27,191 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 09:26:27,191 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 09:26:27,192 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 09:26:27,192 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 09:26:27,192 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 09:26:27,193 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 09:26:27,193 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 09:26:27,198 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 09:26:27,202 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 09:26:27,202 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 09:26:27,203 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 09:26:27,203 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 09:26:27,203 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 09:26:27,203 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-22 09:26:27,204 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 09:26:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:27,232 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 09:26:27,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:27,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 09:26:27,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:27,273 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 09:26:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:27,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 09:26:27,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:27,889 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_23 Int)) (<= (+ (* 2 v_ULTIMATE.start_main_~x~0_23) 1) c_oldRank0)) is different from true [2020-06-22 09:26:28,494 WARN L188 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-06-22 09:26:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:29,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 09:26:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 09:26:29,131 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-06-22 09:26:29,131 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 5 loop predicates [2020-06-22 09:26:29,131 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 30 states and 61 transitions. cyclomatic complexity: 35 Second operand 4 states. [2020-06-22 09:26:29,222 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 30 states and 61 transitions. cyclomatic complexity: 35. Second operand 4 states. Result 88 states and 171 transitions. Complement of second has 24 states. [2020-06-22 09:26:29,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 09:26:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 09:26:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2020-06-22 09:26:29,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 4 letters. [2020-06-22 09:26:29,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:29,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 6 letters. Loop has 4 letters. [2020-06-22 09:26:29,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:29,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 8 letters. [2020-06-22 09:26:29,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 09:26:29,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 171 transitions. [2020-06-22 09:26:29,232 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2020-06-22 09:26:29,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 31 states and 55 transitions. [2020-06-22 09:26:29,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-06-22 09:26:29,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-06-22 09:26:29,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 55 transitions. [2020-06-22 09:26:29,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 09:26:29,234 INFO L706 BuchiCegarLoop]: Abstraction has 31 states and 55 transitions. [2020-06-22 09:26:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 55 transitions. [2020-06-22 09:26:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2020-06-22 09:26:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-06-22 09:26:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-06-22 09:26:29,238 INFO L729 BuchiCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-06-22 09:26:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 09:26:29,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 09:26:29,242 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 3 states. [2020-06-22 09:26:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 09:26:29,269 INFO L93 Difference]: Finished difference Result 26 states and 46 transitions. [2020-06-22 09:26:29,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 09:26:29,289 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 46 transitions. [2020-06-22 09:26:29,290 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-06-22 09:26:29,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 46 transitions. [2020-06-22 09:26:29,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-06-22 09:26:29,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-06-22 09:26:29,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 46 transitions. [2020-06-22 09:26:29,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 09:26:29,292 INFO L706 BuchiCegarLoop]: Abstraction has 26 states and 46 transitions. [2020-06-22 09:26:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 46 transitions. [2020-06-22 09:26:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-06-22 09:26:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-06-22 09:26:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-06-22 09:26:29,295 INFO L729 BuchiCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-06-22 09:26:29,295 INFO L609 BuchiCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-06-22 09:26:29,296 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 09:26:29,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 44 transitions. [2020-06-22 09:26:29,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-06-22 09:26:29,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 09:26:29,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 09:26:29,297 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 09:26:29,297 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 09:26:29,297 INFO L794 eck$LassoCheckResult]: Stem: 337#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L15-1: Formula: true InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 338#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 329#L15 [2020-06-22 09:26:29,298 INFO L796 eck$LassoCheckResult]: Loop: 329#L15 [55] L15-->L15-1: Formula: (and (= v_ULTIMATE.start_main_~x~0_14 0) (> 0 (+ v_ULTIMATE.start_main_~x~0_15 5))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_15} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 331#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 329#L15 [2020-06-22 09:26:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 2 times [2020-06-22 09:26:29,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:29,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:29,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:29,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:29,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2719, now seen corresponding path program 1 times [2020-06-22 09:26:29,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:29,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:29,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 09:26:29,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 09:26:29,320 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 09:26:29,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 09:26:29,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-06-22 09:26:29,320 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 09:26:29,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 09:26:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 09:26:29,321 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. cyclomatic complexity: 23 Second operand 3 states. [2020-06-22 09:26:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 09:26:29,349 INFO L93 Difference]: Finished difference Result 28 states and 43 transitions. [2020-06-22 09:26:29,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 09:26:29,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2020-06-22 09:26:29,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-06-22 09:26:29,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 43 transitions. [2020-06-22 09:26:29,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-06-22 09:26:29,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-06-22 09:26:29,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 43 transitions. [2020-06-22 09:26:29,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 09:26:29,354 INFO L706 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-06-22 09:26:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 43 transitions. [2020-06-22 09:26:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-06-22 09:26:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-06-22 09:26:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2020-06-22 09:26:29,357 INFO L729 BuchiCegarLoop]: Abstraction has 27 states and 42 transitions. [2020-06-22 09:26:29,357 INFO L609 BuchiCegarLoop]: Abstraction has 27 states and 42 transitions. [2020-06-22 09:26:29,357 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 09:26:29,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 42 transitions. [2020-06-22 09:26:29,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-06-22 09:26:29,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 09:26:29,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 09:26:29,358 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-22 09:26:29,358 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 09:26:29,358 INFO L794 eck$LassoCheckResult]: Stem: 393#ULTIMATE.startENTRY [37] ULTIMATE.startENTRY-->L15-1: Formula: true InVars {} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0] 394#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 387#L15 [2020-06-22 09:26:29,359 INFO L796 eck$LassoCheckResult]: Loop: 387#L15 [35] L15-->L16: Formula: (and (<= v_ULTIMATE.start_main_~x~0_6 35) (<= 0 (+ v_ULTIMATE.start_main_~x~0_6 5))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 388#L16 [38] L16-->L15-1: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 (- 5)) (< v_ULTIMATE.start_main_~x~0_8 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_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 395#L15-1 [53] L15-1-->L15: Formula: (> 0 v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 387#L15 [2020-06-22 09:26:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2161, now seen corresponding path program 3 times [2020-06-22 09:26:29,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:29,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:29,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 64657, now seen corresponding path program 1 times [2020-06-22 09:26:29,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:29,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:29,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 09:26:29,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 09:26:29,370 INFO L82 PathProgramCache]: Analyzing trace with hash 64413217, now seen corresponding path program 1 times [2020-06-22 09:26:29,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 09:26:29,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 09:26:29,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 09:26:29,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 09:26:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 09:26:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 09:26:29 BasicIcfg [2020-06-22 09:26:29,420 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 09:26:29,421 INFO L168 Benchmark]: Toolchain (without parser) took 4196.46 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 557.7 MB in the beginning and 440.7 MB in the end (delta: 117.0 MB). Peak memory consumption was 148.5 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,422 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 09:26:29,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.10 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 557.7 MB in the beginning and 648.8 MB in the end (delta: -91.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 681.1 MB. Free memory was 648.8 MB in the beginning and 647.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,423 INFO L168 Benchmark]: Boogie Preprocessor took 19.12 ms. Allocated memory is still 681.1 MB. Free memory was 647.4 MB in the beginning and 644.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,424 INFO L168 Benchmark]: RCFGBuilder took 199.72 ms. Allocated memory is still 681.1 MB. Free memory was 644.3 MB in the beginning and 630.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,424 INFO L168 Benchmark]: BlockEncodingV2 took 77.30 ms. Allocated memory is still 681.1 MB. Free memory was 630.4 MB in the beginning and 626.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,425 INFO L168 Benchmark]: TraceAbstraction took 150.89 ms. Allocated memory is still 681.1 MB. Free memory was 625.0 MB in the beginning and 616.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,425 INFO L168 Benchmark]: BuchiAutomizer took 3421.28 ms. Allocated memory is still 681.1 MB. Free memory was 616.8 MB in the beginning and 440.7 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 50.3 GB. [2020-06-22 09:26:29,429 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 5 locations, 10 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 287.10 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 557.7 MB in the beginning and 648.8 MB in the end (delta: -91.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 681.1 MB. Free memory was 648.8 MB in the beginning and 647.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.12 ms. Allocated memory is still 681.1 MB. Free memory was 647.4 MB in the beginning and 644.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 199.72 ms. Allocated memory is still 681.1 MB. Free memory was 644.3 MB in the beginning and 630.4 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 77.30 ms. Allocated memory is still 681.1 MB. Free memory was 630.4 MB in the beginning and 626.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.89 ms. Allocated memory is still 681.1 MB. Free memory was 625.0 MB in the beginning and 616.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3421.28 ms. Allocated memory is still 681.1 MB. Free memory was 616.8 MB in the beginning and 440.7 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 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=5occurred 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 4 terminating modules (2 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.1s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 39 SDslu, 0 SDs, 0 SdLazy, 96 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax221 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf93 smp86 dnf100 smp100 tf116 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 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: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0, x=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x; [L14] COND TRUE x!=0 Loop: [L15] COND TRUE -5 <= x && x <= 35 [L16] COND TRUE x < 0 [L17] x = -5 [L14] COND TRUE x!=0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-06-22 09:26:22.011 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 09:26:29.664 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check