YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:08:07,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:08:07,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:08:07,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:08:07,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:08:07,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:08:07,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:08:07,731 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:08:07,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:08:07,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:08:07,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:08:07,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:08:07,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:08:07,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:08:07,738 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:08:07,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:08:07,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:08:07,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:08:07,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:08:07,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:08:07,745 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:08:07,746 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:08:07,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:08:07,748 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:08:07,748 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:08:07,749 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:08:07,750 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:08:07,751 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:08:07,751 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:08:07,752 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:08:07,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:08:07,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:08:07,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:08:07,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:08:07,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:08:07,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:08:07,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:08:07,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:08:07,757 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:08:07,757 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 23:08:07,771 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:08:07,772 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:08:07,773 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:08:07,773 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:08:07,773 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:08:07,773 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:08:07,773 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:08:07,774 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:08:07,774 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:08:07,775 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:07,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:08:07,775 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:08:07,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:08:07,775 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:08:07,775 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:08:07,776 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:08:07,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:08:07,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:08:07,776 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:08:07,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:08:07,776 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:08:07,776 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:08:07,777 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:08:07,777 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:08:07,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:08:07,815 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:08:07,818 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:08:07,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:08:07,820 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:08:07,821 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:08:07,886 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/49531d77da074b87be61b29b5707a969/FLAG484d6b76f [2020-06-21 23:08:08,211 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:08:08,211 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:08:08,218 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/49531d77da074b87be61b29b5707a969/FLAG484d6b76f [2020-06-21 23:08:08,633 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/49531d77da074b87be61b29b5707a969 [2020-06-21 23:08:08,645 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:08:08,646 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:08:08,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:08:08,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:08:08,651 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:08:08,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355d1668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08, skipping insertion in model container [2020-06-21 23:08:08,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:08:08,681 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:08:08,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:08:08,839 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:08:08,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:08:08,936 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:08:08,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08 WrapperNode [2020-06-21 23:08:08,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:08:08,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:08:08,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:08:08,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:08:08,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:08:08,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:08:08,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:08:08,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:08:08,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... [2020-06-21 23:08:08,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:08:08,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:08:08,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:08:08,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:08:08,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:08:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:08:09,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:08:09,173 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:08:09,173 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:08:09,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:09 BoogieIcfgContainer [2020-06-21 23:08:09,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:08:09,175 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:08:09,175 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:08:09,177 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:08:09,178 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:09" (1/1) ... [2020-06-21 23:08:09,191 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 10 edges [2020-06-21 23:08:09,193 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:08:09,193 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:08:09,212 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:08:09,213 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:08:09,215 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:08:09,215 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:08:09,216 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:08:09,230 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:08:09,237 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-21 23:08:09,241 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 23:08:09,243 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:08:09,251 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-21 23:08:09,253 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-21 23:08:09,254 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:08:09,255 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:08:09,255 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:08:09,255 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:08:09,255 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 5 edges [2020-06-21 23:08:09,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:09 BasicIcfg [2020-06-21 23:08:09,256 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:08:09,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:08:09,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:08:09,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:08:09,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:08:08" (1/4) ... [2020-06-21 23:08:09,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d85ba44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (2/4) ... [2020-06-21 23:08:09,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d85ba44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:09" (3/4) ... [2020-06-21 23:08:09,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d85ba44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:09" (4/4) ... [2020-06-21 23:08:09,264 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:08:09,274 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:08:09,281 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:08:09,297 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:08:09,326 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:08:09,327 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:08:09,327 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:08:09,327 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:08:09,327 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:08:09,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:08:09,328 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:08:09,328 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:08:09,328 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:08:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-06-21 23:08:09,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:08:09,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-06-21 23:08:09,398 INFO L448 ceAbstractionStarter]: For program point L18-2(lines 16 25) no Hoare annotation was computed. [2020-06-21 23:08:09,399 INFO L451 ceAbstractionStarter]: At program point L16-2(lines 16 25) the Hoare annotation is: true [2020-06-21 23:08:09,399 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:08:09,399 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-06-21 23:08:09,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:09 BasicIcfg [2020-06-21 23:08:09,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:08:09,408 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:08:09,408 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:08:09,411 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:08:09,412 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:09,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:08:08" (1/5) ... [2020-06-21 23:08:09,413 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3be9d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,413 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:09,413 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:08" (2/5) ... [2020-06-21 23:08:09,414 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3be9d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,414 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:09,414 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:09" (3/5) ... [2020-06-21 23:08:09,414 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3be9d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,415 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:09,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:09" (4/5) ... [2020-06-21 23:08:09,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3be9d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:09, skipping insertion in model container [2020-06-21 23:08:09,415 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:09,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:09" (5/5) ... [2020-06-21 23:08:09,417 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:08:09,444 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:08:09,444 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:08:09,444 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:08:09,444 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:08:09,445 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:08:09,445 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:08:09,445 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:08:09,445 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:08:09,445 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:08:09,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-21 23:08:09,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:09,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:09,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:09,471 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:08:09,471 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:09,471 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:08:09,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-21 23:08:09,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:09,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:09,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:09,472 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:08:09,472 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:09,477 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [27] ULTIMATE.startENTRY-->L16-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 6#L16-2true [2020-06-21 23:08:09,478 INFO L796 eck$LassoCheckResult]: Loop: 6#L16-2true [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 5#L18true [38] L18-->L18-2: Formula: (>= v_ULTIMATE.start_main_~y~0_10 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} AuxVars[] AssignedVars[] 4#L18-2true [39] L18-2-->L16-2: Formula: (>= v_ULTIMATE.start_main_~y~0_5 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} AuxVars[] AssignedVars[] 6#L16-2true [2020-06-21 23:08:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:09,484 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-06-21 23:08:09,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:09,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:09,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:09,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:09,541 INFO L82 PathProgramCache]: Analyzing trace with hash 64643, now seen corresponding path program 1 times [2020-06-21 23:08:09,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:09,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:09,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:09,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1762730, now seen corresponding path program 1 times [2020-06-21 23:08:09,562 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:09,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:09,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:09,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:09,612 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:09,613 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:09,613 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:09,613 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:09,613 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:08:09,614 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:09,614 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:09,614 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:09,614 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:08:09,614 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:09,614 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:09,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:09,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:09,700 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:09,701 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:09,708 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:08:09,708 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:09,743 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:08:09,743 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:08:09,799 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:08:09,801 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:09,802 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:09,802 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:09,802 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:09,802 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:08:09,802 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:08:09,802 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:09,802 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:09,802 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:08:09,803 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:09,803 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:09,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:09,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:09,847 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:09,852 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:08:09,854 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:08:09,856 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:08:09,856 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:08:09,856 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:08:09,857 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:08:09,857 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:08:09,859 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:08:09,860 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:08:09,868 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:08:09,874 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:08:09,874 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:08:09,876 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:08:09,876 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:08:09,877 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:08:09,877 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-21 23:08:09,879 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:08:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:09,916 WARN L254 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:08:09,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:09,928 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:09,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:08:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:09,995 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:09,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:09,998 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:08:10,003 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-21 23:08:10,004 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-06-21 23:08:10,101 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 15 states and 18 transitions. Complement of second has 7 states. [2020-06-21 23:08:10,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-06-21 23:08:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-21 23:08:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-06-21 23:08:10,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-06-21 23:08:10,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2020-06-21 23:08:10,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2020-06-21 23:08:10,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-06-21 23:08:10,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:10,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 15 transitions. [2020-06-21 23:08:10,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-21 23:08:10,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 23:08:10,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-06-21 23:08:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:08:10,121 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-06-21 23:08:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-06-21 23:08:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2020-06-21 23:08:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-06-21 23:08:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-06-21 23:08:10,150 INFO L729 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-06-21 23:08:10,150 INFO L609 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-06-21 23:08:10,150 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:08:10,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-06-21 23:08:10,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:10,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:10,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:10,153 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 23:08:10,153 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:10,153 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L16-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 75#L16-2 [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 76#L18 [30] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 |v_ULTIMATE.start_main_#t~nondet0_3|) (< v_ULTIMATE.start_main_~y~0_9 0) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 70#L18-2 [2020-06-21 23:08:10,154 INFO L796 eck$LassoCheckResult]: Loop: 70#L18-2 [39] L18-2-->L16-2: Formula: (>= v_ULTIMATE.start_main_~y~0_5 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} AuxVars[] AssignedVars[] 71#L16-2 [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 78#L18 [38] L18-->L18-2: Formula: (>= v_ULTIMATE.start_main_~y~0_10 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10} AuxVars[] AssignedVars[] 70#L18-2 [2020-06-21 23:08:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,154 INFO L82 PathProgramCache]: Analyzing trace with hash 56853, now seen corresponding path program 1 times [2020-06-21 23:08:10,154 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:10,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,165 INFO L82 PathProgramCache]: Analyzing trace with hash 68393, now seen corresponding path program 2 times [2020-06-21 23:08:10,165 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:10,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1693746325, now seen corresponding path program 1 times [2020-06-21 23:08:10,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:08:10,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,201 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:10,202 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:10,202 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:10,202 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:10,202 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:08:10,202 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,202 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:10,203 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:10,203 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:08:10,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:10,203 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:10,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,237 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:10,237 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,242 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:08:10,242 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:08:10,271 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:08:10,272 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,277 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:08:10,277 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,307 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:08:10,307 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:08:10,362 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:08:10,364 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:10,364 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:10,364 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:10,364 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:10,364 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:08:10,365 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:08:10,365 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:10,365 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:10,365 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:08:10,365 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:10,365 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:10,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,393 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:10,393 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:08:10,394 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:08:10,394 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:08:10,395 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:08:10,395 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:08:10,395 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:08:10,395 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:08:10,396 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:08:10,396 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:08:10,397 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:08:10,397 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:08:10,398 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:08:10,398 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:08:10,398 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:08:10,398 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:08:10,398 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:08:10,399 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:08:10,399 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:08:10,404 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:08:10,407 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:08:10,407 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:08:10,407 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:08:10,407 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:08:10,408 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:08:10,408 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-21 23:08:10,408 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:08:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,430 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:08:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,449 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,474 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:08:10,474 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-21 23:08:10,475 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-06-21 23:08:10,504 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 20 transitions. Complement of second has 5 states. [2020-06-21 23:08:10,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:08:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-21 23:08:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-06-21 23:08:10,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2020-06-21 23:08:10,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2020-06-21 23:08:10,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2020-06-21 23:08:10,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-06-21 23:08:10,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:08:10,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 16 transitions. [2020-06-21 23:08:10,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-21 23:08:10,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-06-21 23:08:10,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2020-06-21 23:08:10,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:08:10,511 INFO L706 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-06-21 23:08:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2020-06-21 23:08:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-06-21 23:08:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-06-21 23:08:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-06-21 23:08:10,513 INFO L729 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-06-21 23:08:10,514 INFO L609 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-06-21 23:08:10,514 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:08:10,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2020-06-21 23:08:10,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-21 23:08:10,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:10,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:10,515 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-06-21 23:08:10,515 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:10,516 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY [27] ULTIMATE.startENTRY-->L16-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, 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_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 148#L16-2 [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 149#L18 [30] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 |v_ULTIMATE.start_main_#t~nondet0_3|) (< v_ULTIMATE.start_main_~y~0_9 0) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 143#L18-2 [39] L18-2-->L16-2: Formula: (>= v_ULTIMATE.start_main_~y~0_5 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} AuxVars[] AssignedVars[] 144#L16-2 [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 152#L18 [30] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 |v_ULTIMATE.start_main_#t~nondet0_3|) (< v_ULTIMATE.start_main_~y~0_9 0) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 154#L18-2 [2020-06-21 23:08:10,516 INFO L796 eck$LassoCheckResult]: Loop: 154#L18-2 [39] L18-2-->L16-2: Formula: (>= v_ULTIMATE.start_main_~y~0_5 0) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5} AuxVars[] AssignedVars[] 151#L16-2 [35] L16-2-->L18: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (<= 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0] 152#L18 [30] L18-->L18-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 |v_ULTIMATE.start_main_#t~nondet0_3|) (< v_ULTIMATE.start_main_~y~0_9 0) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_3|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 154#L18-2 [2020-06-21 23:08:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1693746317, now seen corresponding path program 1 times [2020-06-21 23:08:10,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:10,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 68385, now seen corresponding path program 1 times [2020-06-21 23:08:10,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:10,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1120774933, now seen corresponding path program 2 times [2020-06-21 23:08:10,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:10,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:10,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:10,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:10,588 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:10,588 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:10,589 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:10,589 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:10,589 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:08:10,589 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,590 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:10,590 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:10,590 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:08:10,590 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:10,590 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:10,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,649 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:10,649 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:08:10,657 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:08:10,663 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:08:10,663 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0, ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0, ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,692 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:08:10,693 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:10,724 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:08:10,724 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:08:10,754 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:08:10,756 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:08:10,757 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:08:10,757 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:08:10,757 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:08:10,757 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:08:10,757 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:08:10,758 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:08:10,758 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:08:10,758 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:08:10,758 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:08:10,758 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:08:10,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:08:10,810 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:08:10,810 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:08:10,810 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:08:10,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:08:10,812 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:08:10,812 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:08:10,812 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:08:10,812 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:08:10,813 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:08:10,813 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:08:10,816 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:08:10,816 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-21 23:08:10,817 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:08:10,817 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:08:10,817 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:08:10,817 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:08:10,817 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:08:10,818 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:08:10,819 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:08:10,823 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:08:10,826 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:08:10,826 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-21 23:08:10,826 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:08:10,826 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:08:10,826 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:08:10,827 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-21 23:08:10,827 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:08:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:08:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:08:10,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:08:10,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:08:10,947 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:08:10,948 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-06-21 23:08:10,948 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-06-21 23:08:10,989 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2020-06-21 23:08:10,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-21 23:08:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-21 23:08:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-06-21 23:08:10,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2020-06-21 23:08:10,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2020-06-21 23:08:10,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 6 letters. [2020-06-21 23:08:10,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:08:10,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2020-06-21 23:08:10,995 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:08:10,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-06-21 23:08:10,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:08:10,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:08:10,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:08:10,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:08:10,996 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:08:10,996 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:08:10,996 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:08:10,996 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 23:08:10,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:08:10,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:08:10,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:08:11,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:11 BasicIcfg [2020-06-21 23:08:11,003 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:08:11,004 INFO L168 Benchmark]: Toolchain (without parser) took 2358.23 ms. Allocated memory was 649.6 MB in the beginning and 699.9 MB in the end (delta: 50.3 MB). Free memory was 563.7 MB in the beginning and 470.3 MB in the end (delta: 93.3 MB). Peak memory consumption was 143.7 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,006 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:08:11,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.68 ms. Allocated memory was 649.6 MB in the beginning and 699.9 MB in the end (delta: 50.3 MB). Free memory was 563.7 MB in the beginning and 667.9 MB in the end (delta: -104.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 699.9 MB. Free memory was 667.9 MB in the beginning and 665.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,007 INFO L168 Benchmark]: Boogie Preprocessor took 18.27 ms. Allocated memory is still 699.9 MB. Free memory was 665.7 MB in the beginning and 664.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,008 INFO L168 Benchmark]: RCFGBuilder took 184.84 ms. Allocated memory is still 699.9 MB. Free memory was 664.6 MB in the beginning and 650.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,008 INFO L168 Benchmark]: BlockEncodingV2 took 81.25 ms. Allocated memory is still 699.9 MB. Free memory was 650.5 MB in the beginning and 646.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,009 INFO L168 Benchmark]: TraceAbstraction took 150.46 ms. Allocated memory is still 699.9 MB. Free memory was 646.2 MB in the beginning and 636.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,010 INFO L168 Benchmark]: BuchiAutomizer took 1595.34 ms. Allocated memory is still 699.9 MB. Free memory was 636.5 MB in the beginning and 470.3 MB in the end (delta: 166.1 MB). Peak memory consumption was 166.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:11,014 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 10 edges - StatisticsResult: Encoded RCFG 4 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 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 289.68 ms. Allocated memory was 649.6 MB in the beginning and 699.9 MB in the end (delta: 50.3 MB). Free memory was 563.7 MB in the beginning and 667.9 MB in the end (delta: -104.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 699.9 MB. Free memory was 667.9 MB in the beginning and 665.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.27 ms. Allocated memory is still 699.9 MB. Free memory was 665.7 MB in the beginning and 664.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 184.84 ms. Allocated memory is still 699.9 MB. Free memory was 664.6 MB in the beginning and 650.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.25 ms. Allocated memory is still 699.9 MB. Free memory was 650.5 MB in the beginning and 646.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.46 ms. Allocated memory is still 699.9 MB. Free memory was 646.2 MB in the beginning and 636.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1595.34 ms. Allocated memory is still 699.9 MB. Free memory was 636.5 MB in the beginning and 470.3 MB in the end (delta: 166.1 MB). Peak memory consumption was 166.1 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: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 57 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf113 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-21 23:08:05.416 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:08:11.248 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check