YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 04:00:10,230 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 04:00:10,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 04:00:10,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 04:00:10,243 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 04:00:10,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 04:00:10,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 04:00:10,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 04:00:10,248 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 04:00:10,249 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 04:00:10,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 04:00:10,250 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 04:00:10,251 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 04:00:10,252 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 04:00:10,253 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 04:00:10,253 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 04:00:10,254 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 04:00:10,256 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 04:00:10,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 04:00:10,259 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 04:00:10,260 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 04:00:10,262 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 04:00:10,264 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 04:00:10,264 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 04:00:10,264 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 04:00:10,265 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 04:00:10,266 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 04:00:10,266 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 04:00:10,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 04:00:10,267 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 04:00:10,268 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 04:00:10,269 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 04:00:10,270 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 04:00:10,270 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 04:00:10,271 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 04:00:10,271 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 04:00:10,271 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 04:00:10,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 04:00:10,272 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 04:00:10,273 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 04:00:10,287 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 04:00:10,288 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 04:00:10,289 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 04:00:10,289 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 04:00:10,289 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 04:00:10,289 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 04:00:10,289 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 04:00:10,290 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 04:00:10,290 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 04:00:10,290 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 04:00:10,290 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 04:00:10,290 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 04:00:10,290 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 04:00:10,291 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 04:00:10,291 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:10,291 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 04:00:10,291 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 04:00:10,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 04:00:10,292 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 04:00:10,292 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 04:00:10,292 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 04:00:10,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 04:00:10,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 04:00:10,292 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 04:00:10,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 04:00:10,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 04:00:10,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 04:00:10,293 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 04:00:10,293 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 04:00:10,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 04:00:10,331 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 04:00:10,335 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 04:00:10,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 04:00:10,336 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 04:00:10,337 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 04:00:10,415 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/29530ae05cba4acd89ff74fdc0ef869d/FLAG6ff5c1576 [2020-06-22 04:00:10,767 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 04:00:10,767 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 04:00:10,774 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/29530ae05cba4acd89ff74fdc0ef869d/FLAG6ff5c1576 [2020-06-22 04:00:11,205 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/29530ae05cba4acd89ff74fdc0ef869d [2020-06-22 04:00:11,217 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 04:00:11,218 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 04:00:11,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 04:00:11,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 04:00:11,223 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 04:00:11,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cec1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 04:00:11,253 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 04:00:11,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 04:00:11,413 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 04:00:11,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 04:00:11,498 INFO L195 MainTranslator]: Completed translation [2020-06-22 04:00:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11 WrapperNode [2020-06-22 04:00:11,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 04:00:11,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 04:00:11,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 04:00:11,499 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 04:00:11,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 04:00:11,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 04:00:11,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 04:00:11,534 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 04:00:11,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 04:00:11,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 04:00:11,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 04:00:11,554 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 04:00:11,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 04:00:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 04:00:11,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 04:00:11,747 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 04:00:11,747 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 04:00:11,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:11 BoogieIcfgContainer [2020-06-22 04:00:11,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 04:00:11,749 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 04:00:11,749 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 04:00:11,751 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 04:00:11,752 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:11" (1/1) ... [2020-06-22 04:00:11,768 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-06-22 04:00:11,769 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 04:00:11,771 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 04:00:11,772 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 04:00:11,772 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 04:00:11,774 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 04:00:11,775 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 04:00:11,775 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 04:00:11,789 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 04:00:11,796 INFO L200 BlockEncoder]: SBE split 0 edges [2020-06-22 04:00:11,801 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 04:00:11,803 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 04:00:11,816 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-06-22 04:00:11,818 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 04:00:11,820 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 04:00:11,820 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 04:00:11,820 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 04:00:11,820 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 04:00:11,821 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-06-22 04:00:11,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 04:00:11 BasicIcfg [2020-06-22 04:00:11,821 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 04:00:11,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 04:00:11,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 04:00:11,826 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 04:00:11,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 04:00:11" (1/4) ... [2020-06-22 04:00:11,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1bf8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (2/4) ... [2020-06-22 04:00:11,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1bf8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:11" (3/4) ... [2020-06-22 04:00:11,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1bf8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 04:00:11" (4/4) ... [2020-06-22 04:00:11,830 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 04:00:11,840 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 04:00:11,847 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 04:00:11,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 04:00:11,892 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 04:00:11,893 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 04:00:11,893 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 04:00:11,894 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 04:00:11,894 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 04:00:11,894 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 04:00:11,894 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 04:00:11,894 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 04:00:11,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 04:00:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 04:00:11,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 04:00:11,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 04:00:11,966 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 04:00:11,966 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-06-22 04:00:11,967 INFO L451 ceAbstractionStarter]: At program point L21-2(lines 19 26) the Hoare annotation is: true [2020-06-22 04:00:11,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:00:11 BasicIcfg [2020-06-22 04:00:11,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 04:00:11,975 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 04:00:11,975 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 04:00:11,979 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 04:00:11,979 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 04:00:11,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 04:00:11" (1/5) ... [2020-06-22 04:00:11,980 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d6bf730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,980 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 04:00:11,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 04:00:11" (2/5) ... [2020-06-22 04:00:11,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d6bf730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,981 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 04:00:11,981 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:00:11" (3/5) ... [2020-06-22 04:00:11,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d6bf730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,982 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 04:00:11,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 04:00:11" (4/5) ... [2020-06-22 04:00:11,982 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d6bf730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 04:00:11, skipping insertion in model container [2020-06-22 04:00:11,982 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 04:00:11,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:00:11" (5/5) ... [2020-06-22 04:00:11,984 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 04:00:12,011 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 04:00:12,011 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 04:00:12,011 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 04:00:12,011 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 04:00:12,011 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 04:00:12,011 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 04:00:12,012 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 04:00:12,012 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 04:00:12,012 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 04:00:12,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 04:00:12,032 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 04:00:12,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:12,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:12,037 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 04:00:12,037 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 04:00:12,038 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 04:00:12,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 04:00:12,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 04:00:12,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:12,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:12,039 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 04:00:12,039 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 04:00:12,044 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 5#L21-2true [2020-06-22 04:00:12,045 INFO L796 eck$LassoCheckResult]: Loop: 5#L21-2true [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 3#L21true [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_7 (+ v_ULTIMATE.start_main_~z~0_8 1)) (>= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 5#L21-2true [2020-06-22 04:00:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2020-06-22 04:00:12,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:12,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:12,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 1 times [2020-06-22 04:00:12,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:12,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:12,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:12,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash 55772, now seen corresponding path program 1 times [2020-06-22 04:00:12,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:12,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:12,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:12,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:12,206 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:12,207 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:12,207 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:12,208 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:12,208 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 04:00:12,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:12,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:12,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:12,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 04:00:12,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:12,209 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:12,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,372 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:12,372 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:12,383 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:12,383 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:12,417 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:12,417 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:12,424 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:12,424 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:12,451 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:12,451 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:12,456 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:12,456 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:12,487 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:12,487 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:12,764 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 04:00:12,768 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:12,768 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:12,768 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:12,768 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:12,768 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 04:00:12,768 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 04:00:12,768 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:12,769 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:12,769 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 04:00:12,769 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:12,769 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:12,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:12,890 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:12,896 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 04:00:12,897 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:12,899 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:12,899 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:12,899 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:12,900 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:12,904 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 04:00:12,905 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 04:00:12,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:12,914 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:12,915 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:12,915 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:12,915 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:12,915 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:12,918 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 04:00:12,918 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 04:00:12,926 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:12,927 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:12,927 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:12,927 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:12,928 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:12,928 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:12,928 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:12,929 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:12,930 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:12,938 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 04:00:12,945 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 04:00:12,945 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 04:00:12,948 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 04:00:12,948 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 04:00:12,948 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 04:00:12,949 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~z~0 + 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-06-22 04:00:12,950 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 04:00:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:12,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 04:00:12,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:13,003 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 04:00:13,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 04:00:13,018 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 04:00:13,022 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 04:00:13,024 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-06-22 04:00:13,051 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-06-22 04:00:13,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 04:00:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 04:00:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 04:00:13,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 04:00:13,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 04:00:13,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 04:00:13,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-06-22 04:00:13,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 04:00:13,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 04:00:13,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 04:00:13,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 04:00:13,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-06-22 04:00:13,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 04:00:13,070 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 04:00:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-06-22 04:00:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-06-22 04:00:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 04:00:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 04:00:13,099 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 04:00:13,099 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 04:00:13,099 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 04:00:13,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-06-22 04:00:13,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 04:00:13,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:13,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:13,100 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 04:00:13,101 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 04:00:13,101 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 46#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 41#L21 [24] L21-->L21-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~z~0_6) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 42#L21-2 [2020-06-22 04:00:13,101 INFO L796 eck$LassoCheckResult]: Loop: 42#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 47#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_7 (+ v_ULTIMATE.start_main_~z~0_8 1)) (>= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 42#L21-2 [2020-06-22 04:00:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 1 times [2020-06-22 04:00:13,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:13,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1956, now seen corresponding path program 2 times [2020-06-22 04:00:13,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:13,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,123 INFO L82 PathProgramCache]: Analyzing trace with hash 53588277, now seen corresponding path program 1 times [2020-06-22 04:00:13,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:13,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,158 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:13,158 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:13,158 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:13,158 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:13,158 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 04:00:13,159 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,159 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:13,159 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:13,159 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 04:00:13,159 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:13,159 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:13,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,241 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:13,241 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:13,246 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:13,273 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:13,273 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,278 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:13,278 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:13,305 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:13,305 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,309 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:13,309 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,340 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:13,340 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:13,640 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 04:00:13,643 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:13,643 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:13,643 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:13,643 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:13,643 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 04:00:13,643 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 04:00:13,644 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:13,644 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:13,644 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-22 04:00:13,644 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:13,644 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:13,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,725 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:13,725 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 04:00:13,726 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:13,726 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:13,727 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:13,727 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:13,727 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:13,729 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 04:00:13,730 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 04:00:13,734 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:13,734 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:13,735 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:13,735 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:13,735 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:13,735 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:13,735 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:13,736 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:13,736 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:13,742 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 04:00:13,746 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 04:00:13,747 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 04:00:13,748 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 04:00:13,748 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 04:00:13,748 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 04:00:13,748 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~x~0 - 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-06-22 04:00:13,749 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 04:00:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:13,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 04:00:13,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:13,787 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 04:00:13,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 04:00:13,788 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 04:00:13,788 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 04:00:13,789 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-06-22 04:00:13,803 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 9 states and 13 transitions. Complement of second has 4 states. [2020-06-22 04:00:13,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 04:00:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 04:00:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 04:00:13,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 04:00:13,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-22 04:00:13,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-22 04:00:13,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:13,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-06-22 04:00:13,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 04:00:13,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-06-22 04:00:13,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 04:00:13,809 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 04:00:13,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-22 04:00:13,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 04:00:13,810 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-22 04:00:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-22 04:00:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-06-22 04:00:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 04:00:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-06-22 04:00:13,812 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 04:00:13,812 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 04:00:13,812 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 04:00:13,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-06-22 04:00:13,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 04:00:13,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:13,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:13,813 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 04:00:13,813 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 04:00:13,813 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 92#L21-2 [2020-06-22 04:00:13,813 INFO L796 eck$LassoCheckResult]: Loop: 92#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 91#L21 [24] L21-->L21-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~z~0_6) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 92#L21-2 [2020-06-22 04:00:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,814 INFO L82 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 2 times [2020-06-22 04:00:13,814 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:13,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2020-06-22 04:00:13,821 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:13,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash 55762, now seen corresponding path program 2 times [2020-06-22 04:00:13,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:13,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:13,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:13,859 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:13,860 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:13,860 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:13,860 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:13,860 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 04:00:13,860 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,860 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:13,860 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:13,861 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 04:00:13,861 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:13,861 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:13,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:13,940 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:13,941 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,948 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:13,948 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:13,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:13,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,014 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:14,014 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=-1}, {ULTIMATE.start_main_~i~0=-5}, {ULTIMATE.start_main_~i~0=7}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,045 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,045 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,073 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:14,073 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,080 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,080 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:14,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,301 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 04:00:14,304 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:14,304 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:14,304 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:14,304 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:14,304 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 04:00:14,305 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 04:00:14,305 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:14,305 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:14,305 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-22 04:00:14,305 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:14,305 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:14,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,376 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:14,376 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 04:00:14,377 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:14,377 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:14,378 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:14,378 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:14,378 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:14,378 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:14,379 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:14,379 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:14,382 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:14,382 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:14,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:14,383 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:14,383 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:14,383 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:14,383 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:14,384 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:14,384 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:14,388 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 04:00:14,393 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 04:00:14,393 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 04:00:14,394 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 04:00:14,394 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 04:00:14,394 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 04:00:14,394 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 04:00:14,395 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 04:00:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:14,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 04:00:14,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:14,433 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 04:00:14,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 04:00:14,434 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-06-22 04:00:14,434 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-06-22 04:00:14,435 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-22 04:00:14,447 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-06-22 04:00:14,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 04:00:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 04:00:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-06-22 04:00:14,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 04:00:14,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:14,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 04:00:14,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:14,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 04:00:14,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:14,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-06-22 04:00:14,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 04:00:14,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2020-06-22 04:00:14,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 04:00:14,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 04:00:14,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-06-22 04:00:14,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 04:00:14,453 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-06-22 04:00:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-06-22 04:00:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-06-22 04:00:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 04:00:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-06-22 04:00:14,455 INFO L729 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 04:00:14,455 INFO L609 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 04:00:14,455 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 04:00:14,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-06-22 04:00:14,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 04:00:14,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:14,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:14,458 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-06-22 04:00:14,458 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 04:00:14,458 INFO L794 eck$LassoCheckResult]: Stem: 139#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 140#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 141#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_7 (+ v_ULTIMATE.start_main_~z~0_8 1)) (>= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 142#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 135#L21 [2020-06-22 04:00:14,458 INFO L796 eck$LassoCheckResult]: Loop: 135#L21 [24] L21-->L21-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~z~0_6) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 136#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 135#L21 [2020-06-22 04:00:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1728963, now seen corresponding path program 2 times [2020-06-22 04:00:14,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:14,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:14,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:14,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1736, now seen corresponding path program 2 times [2020-06-22 04:00:14,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:14,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:14,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:14,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:14,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1661534218, now seen corresponding path program 2 times [2020-06-22 04:00:14,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:14,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:14,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:14,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:14,511 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:14,511 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:14,511 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:14,511 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:14,512 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 04:00:14,512 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,512 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:14,512 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:14,512 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 04:00:14,512 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:14,512 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:14,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:14,570 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:14,570 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,579 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,579 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,609 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:14,609 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,643 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:14,643 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=-1}, {ULTIMATE.start_main_~i~0=-5}, {ULTIMATE.start_main_~i~0=7}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,687 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,687 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,715 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:14,715 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:14,746 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 04:00:14,746 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,750 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:14,750 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:14,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:14,781 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:15,288 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 04:00:15,291 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:15,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:15,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:15,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:15,291 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 04:00:15,292 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 04:00:15,292 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:15,292 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:15,292 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-22 04:00:15,292 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:15,292 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:15,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,366 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:15,366 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 04:00:15,367 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:15,367 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:15,367 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:15,368 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:15,368 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:15,368 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:15,368 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:15,368 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:15,371 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:15,372 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:15,372 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:15,372 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:15,373 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:15,373 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:15,374 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 04:00:15,375 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 04:00:15,379 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:15,379 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:15,380 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:15,380 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:15,380 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:15,380 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:15,380 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:15,381 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:15,381 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:15,384 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 04:00:15,388 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 04:00:15,388 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 04:00:15,389 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 04:00:15,389 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 04:00:15,389 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 04:00:15,389 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-22 04:00:15,390 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 04:00:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:15,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 04:00:15,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:15,415 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 04:00:15,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 04:00:15,450 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 04:00:15,451 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 [2020-06-22 04:00:15,451 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-06-22 04:00:15,464 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2020-06-22 04:00:15,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 04:00:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 04:00:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-06-22 04:00:15,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-22 04:00:15,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:15,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-06-22 04:00:15,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:15,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 04:00:15,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:15,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-06-22 04:00:15,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 04:00:15,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2020-06-22 04:00:15,470 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-22 04:00:15,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-06-22 04:00:15,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-06-22 04:00:15,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 04:00:15,470 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-06-22 04:00:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-06-22 04:00:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-06-22 04:00:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 04:00:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 04:00:15,472 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 04:00:15,472 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 04:00:15,472 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 04:00:15,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-06-22 04:00:15,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-22 04:00:15,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 04:00:15,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 04:00:15,473 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-06-22 04:00:15,473 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-06-22 04:00:15,473 INFO L794 eck$LassoCheckResult]: Stem: 202#ULTIMATE.startENTRY [26] ULTIMATE.startENTRY-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet3_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~z~0_1 |v_ULTIMATE.start_main_#t~nondet2_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet2_4|, |v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet3_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 203#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 204#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_7 (+ v_ULTIMATE.start_main_~z~0_8 1)) (>= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 205#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 199#L21 [2020-06-22 04:00:15,474 INFO L796 eck$LassoCheckResult]: Loop: 199#L21 [24] L21-->L21-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~z~0_6) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 1))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 200#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 204#L21 [34] L21-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_7 (+ v_ULTIMATE.start_main_~z~0_8 1)) (>= v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~z~0_8)) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 205#L21-2 [31] L21-2-->L21: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 199#L21 [2020-06-22 04:00:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1728963, now seen corresponding path program 3 times [2020-06-22 04:00:15,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:15,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:15,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:15,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:15,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1669381, now seen corresponding path program 1 times [2020-06-22 04:00:15,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:15,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:15,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 04:00:15,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:15,491 INFO L82 PathProgramCache]: Analyzing trace with hash -993449529, now seen corresponding path program 3 times [2020-06-22 04:00:15,491 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 04:00:15,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 04:00:15,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 04:00:15,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 04:00:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 04:00:15,542 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:15,542 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:15,542 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:15,542 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:15,542 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 04:00:15,542 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:15,542 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:15,543 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:15,543 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 04:00:15,543 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:15,543 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:15,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:15,632 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:15,632 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:15,635 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 04:00:15,635 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 04:00:15,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 04:00:15,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 04:00:16,132 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 04:00:16,134 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 04:00:16,134 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 04:00:16,134 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 04:00:16,134 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 04:00:16,134 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 04:00:16,134 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 04:00:16,135 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 04:00:16,135 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 04:00:16,135 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-06-22 04:00:16,135 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 04:00:16,135 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 04:00:16,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:16,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:16,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:16,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 04:00:16,210 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 04:00:16,210 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 04:00:16,210 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:16,211 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:16,211 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:16,211 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:16,211 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:16,213 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 04:00:16,213 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 04:00:16,215 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 04:00:16,216 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 04:00:16,216 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 04:00:16,216 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 04:00:16,217 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 04:00:16,217 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 04:00:16,217 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 04:00:16,218 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 04:00:16,218 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 04:00:16,222 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 04:00:16,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 04:00:16,227 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 04:00:16,227 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 04:00:16,227 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 04:00:16,228 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 04:00:16,228 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~z~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-22 04:00:16,228 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 04:00:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 04:00:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:16,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 04:00:16,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:16,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 04:00:16,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 04:00:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:16,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 04:00:16,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 04:00:16,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 04:00:16,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 04:00:16,366 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 6 predicates after loop cannibalization [2020-06-22 04:00:16,366 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 6 loop predicates [2020-06-22 04:00:16,366 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 5 states. [2020-06-22 04:00:16,403 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 5 states. Result 21 states and 29 transitions. Complement of second has 7 states. [2020-06-22 04:00:16,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 04:00:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 04:00:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-06-22 04:00:16,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 04:00:16,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:16,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2020-06-22 04:00:16,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:16,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 8 letters. [2020-06-22 04:00:16,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 04:00:16,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 29 transitions. [2020-06-22 04:00:16,411 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 04:00:16,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-06-22 04:00:16,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 04:00:16,411 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 04:00:16,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 04:00:16,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 04:00:16,411 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 04:00:16,411 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 04:00:16,412 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 04:00:16,412 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 04:00:16,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 04:00:16,412 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 04:00:16,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 04:00:16,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 04:00:16 BasicIcfg [2020-06-22 04:00:16,418 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 04:00:16,418 INFO L168 Benchmark]: Toolchain (without parser) took 5201.14 ms. Allocated memory was 649.6 MB in the beginning and 762.8 MB in the end (delta: 113.2 MB). Free memory was 559.8 MB in the beginning and 584.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,420 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 581.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 04:00:16,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.43 ms. Allocated memory was 649.6 MB in the beginning and 696.3 MB in the end (delta: 46.7 MB). Free memory was 559.8 MB in the beginning and 664.0 MB in the end (delta: -104.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.12 ms. Allocated memory is still 696.3 MB. Free memory was 664.0 MB in the beginning and 662.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,422 INFO L168 Benchmark]: Boogie Preprocessor took 20.04 ms. Allocated memory is still 696.3 MB. Free memory is still 661.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 04:00:16,422 INFO L168 Benchmark]: RCFGBuilder took 195.11 ms. Allocated memory is still 696.3 MB. Free memory was 661.2 MB in the beginning and 645.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,423 INFO L168 Benchmark]: BlockEncodingV2 took 72.21 ms. Allocated memory is still 696.3 MB. Free memory was 645.1 MB in the beginning and 641.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,423 INFO L168 Benchmark]: TraceAbstraction took 152.17 ms. Allocated memory is still 696.3 MB. Free memory was 639.7 MB in the beginning and 631.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,424 INFO L168 Benchmark]: BuchiAutomizer took 4442.81 ms. Allocated memory was 696.3 MB in the beginning and 762.8 MB in the end (delta: 66.6 MB). Free memory was 631.6 MB in the beginning and 584.6 MB in the end (delta: 47.0 MB). Peak memory consumption was 113.6 MB. Max. memory is 50.3 GB. [2020-06-22 04:00:16,428 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 581.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 279.43 ms. Allocated memory was 649.6 MB in the beginning and 696.3 MB in the end (delta: 46.7 MB). Free memory was 559.8 MB in the beginning and 664.0 MB in the end (delta: -104.1 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.12 ms. Allocated memory is still 696.3 MB. Free memory was 664.0 MB in the beginning and 662.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.04 ms. Allocated memory is still 696.3 MB. Free memory is still 661.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * RCFGBuilder took 195.11 ms. Allocated memory is still 696.3 MB. Free memory was 661.2 MB in the beginning and 645.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.21 ms. Allocated memory is still 696.3 MB. Free memory was 645.1 MB in the beginning and 641.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 152.17 ms. Allocated memory is still 696.3 MB. Free memory was 639.7 MB in the beginning and 631.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4442.81 ms. Allocated memory was 696.3 MB in the beginning and 762.8 MB in the end (delta: 66.6 MB). Free memory was 631.6 MB in the beginning and 584.6 MB in the end (delta: 47.0 MB). Peak memory consumption was 113.6 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (0 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function -2 * z + 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * x + -2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function z + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function z + -1 * x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * z + y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. 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 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 15 SDtfs, 25 SDslu, 0 SDs, 0 SdLazy, 49 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp96 dnf100 smp100 tf110 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 04:00:07.876 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 04:00:16.659 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check