YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 00:52:41,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 00:52:41,675 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 00:52:41,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 00:52:41,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 00:52:41,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 00:52:41,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 00:52:41,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 00:52:41,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 00:52:41,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 00:52:41,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 00:52:41,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 00:52:41,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 00:52:41,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 00:52:41,713 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 00:52:41,714 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 00:52:41,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 00:52:41,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 00:52:41,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 00:52:41,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 00:52:41,749 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 00:52:41,751 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 00:52:41,753 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 00:52:41,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 00:52:41,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 00:52:41,754 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 00:52:41,755 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 00:52:41,756 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 00:52:41,756 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 00:52:41,757 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 00:52:41,775 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 00:52:41,776 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 00:52:41,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 00:52:41,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 00:52:41,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 00:52:41,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 00:52:41,778 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 00:52:41,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 00:52:41,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 00:52:41,780 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-22 00:52:41,809 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 00:52:41,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 00:52:41,811 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 00:52:41,811 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 00:52:41,811 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 00:52:41,811 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:52:41,811 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 00:52:41,812 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 00:52:41,812 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 00:52:41,812 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 00:52:41,812 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 00:52:41,812 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 00:52:41,812 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:41,813 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 00:52:41,813 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 00:52:41,814 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 00:52:41,814 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 00:52:41,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 00:52:41,814 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 00:52:41,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 00:52:41,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 00:52:41,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 00:52:41,828 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 00:52:41,828 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 00:52:41,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 00:52:41,884 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 00:52:41,899 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 00:52:41,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 00:52:41,901 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 00:52:41,902 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 00:52:42,030 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/5136eb8463de428cacc3f2fd2f2baaa5/FLAG3a2ca65dd [2020-06-22 00:52:42,523 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 00:52:42,524 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-22 00:52:42,534 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/5136eb8463de428cacc3f2fd2f2baaa5/FLAG3a2ca65dd [2020-06-22 00:52:42,883 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/5136eb8463de428cacc3f2fd2f2baaa5 [2020-06-22 00:52:42,896 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 00:52:42,898 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 00:52:42,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 00:52:42,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 00:52:42,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 00:52:42,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:52:42" (1/1) ... [2020-06-22 00:52:42,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174aac7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:42, skipping insertion in model container [2020-06-22 00:52:42,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 12:52:42" (1/1) ... [2020-06-22 00:52:42,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 00:52:42,940 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 00:52:43,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:52:43,141 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 00:52:43,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 00:52:43,275 INFO L195 MainTranslator]: Completed translation [2020-06-22 00:52:43,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43 WrapperNode [2020-06-22 00:52:43,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 00:52:43,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 00:52:43,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 00:52:43,285 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 00:52:43,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 00:52:43,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 00:52:43,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 00:52:43,332 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 00:52:43,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 00:52:43,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 00:52:43,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 00:52:43,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 00:52:43,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 00:52:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 00:52:43,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 00:52:43,655 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 00:52:43,655 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 00:52:43,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:52:43 BoogieIcfgContainer [2020-06-22 00:52:43,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 00:52:43,658 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 00:52:43,658 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 00:52:43,660 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 00:52:43,661 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:52:43" (1/1) ... [2020-06-22 00:52:43,680 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 00:52:43,682 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 00:52:43,683 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 00:52:43,684 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 00:52:43,684 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 00:52:43,686 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 00:52:43,687 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 00:52:43,688 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 00:52:43,705 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 00:52:43,721 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-22 00:52:43,727 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 00:52:43,729 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:52:43,746 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 00:52:43,752 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-06-22 00:52:43,754 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 00:52:43,755 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:52:43,765 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-22 00:52:43,766 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:52:43,766 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 00:52:43,766 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 00:52:43,766 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 00:52:43,767 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 00:52:43,767 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-06-22 00:52:43,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:52:43 BasicIcfg [2020-06-22 00:52:43,768 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 00:52:43,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 00:52:43,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 00:52:43,772 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 00:52:43,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 12:52:42" (1/4) ... [2020-06-22 00:52:43,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b499e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (2/4) ... [2020-06-22 00:52:43,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b499e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:52:43" (3/4) ... [2020-06-22 00:52:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b499e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:52:43" (4/4) ... [2020-06-22 00:52:43,777 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:52:43,787 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 00:52:43,809 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 00:52:43,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 00:52:43,863 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:52:43,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 00:52:43,864 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 00:52:43,864 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:52:43,865 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:52:43,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:52:43,865 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 00:52:43,865 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:52:43,865 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 00:52:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-06-22 00:52:43,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 00:52:43,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-06-22 00:52:43,947 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 00:52:43,948 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-06-22 00:52:43,948 INFO L451 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: true [2020-06-22 00:52:43,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:52:43 BasicIcfg [2020-06-22 00:52:43,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 00:52:43,958 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 00:52:43,958 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 00:52:43,962 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 00:52:43,963 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:52:43,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 12:52:42" (1/5) ... [2020-06-22 00:52:43,964 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55b0417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,964 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:52:43,964 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 12:52:43" (2/5) ... [2020-06-22 00:52:43,965 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55b0417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,965 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:52:43,965 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:52:43" (3/5) ... [2020-06-22 00:52:43,966 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55b0417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,966 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:52:43,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 12:52:43" (4/5) ... [2020-06-22 00:52:43,966 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55b0417d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:52:43, skipping insertion in model container [2020-06-22 00:52:43,966 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 00:52:43,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:52:43" (5/5) ... [2020-06-22 00:52:43,968 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 00:52:43,998 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 00:52:43,998 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 00:52:43,998 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 00:52:43,998 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 00:52:43,999 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 00:52:43,999 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 00:52:43,999 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 00:52:43,999 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 00:52:43,999 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 00:52:44,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 00:52:44,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:52:44,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:44,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:44,029 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:52:44,029 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:44,029 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 00:52:44,029 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-06-22 00:52:44,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-06-22 00:52:44,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:44,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:44,030 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:52:44,031 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:44,037 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 4#L20-2true [2020-06-22 00:52:44,037 INFO L796 eck$LassoCheckResult]: Loop: 4#L20-2true [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 5#L20true [39] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~y2~0_1 v_ULTIMATE.start_main_~y1~0_2) (= v_ULTIMATE.start_main_~y1~0_1 (+ (* (- 1) v_ULTIMATE.start_main_~y2~0_1) v_ULTIMATE.start_main_~y1~0_2))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_2, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_1, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~y1~0] 4#L20-2true [2020-06-22 00:52:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:44,044 INFO L82 PathProgramCache]: Analyzing trace with hash 81, now seen corresponding path program 1 times [2020-06-22 00:52:44,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:44,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:44,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:44,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:44,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2426, now seen corresponding path program 1 times [2020-06-22 00:52:44,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:44,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:44,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 00:52:44,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-06-22 00:52:44,222 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-06-22 00:52:44,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 00:52:44,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 00:52:44,242 INFO L87 Difference]: Start difference. First operand 3 states. Second operand 3 states. [2020-06-22 00:52:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 00:52:44,336 INFO L93 Difference]: Finished difference Result 4 states and 6 transitions. [2020-06-22 00:52:44,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 00:52:44,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4 states and 6 transitions. [2020-06-22 00:52:44,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 00:52:44,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4 states to 4 states and 6 transitions. [2020-06-22 00:52:44,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-06-22 00:52:44,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-06-22 00:52:44,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 6 transitions. [2020-06-22 00:52:44,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:52:44,351 INFO L706 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 00:52:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 6 transitions. [2020-06-22 00:52:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2020-06-22 00:52:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 00:52:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-06-22 00:52:44,385 INFO L729 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 00:52:44,385 INFO L609 BuchiCegarLoop]: Abstraction has 4 states and 6 transitions. [2020-06-22 00:52:44,385 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 00:52:44,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 6 transitions. [2020-06-22 00:52:44,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 00:52:44,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:44,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:44,386 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:52:44,386 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:44,387 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRY [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 17#L20-2 [2020-06-22 00:52:44,387 INFO L796 eck$LassoCheckResult]: Loop: 17#L20-2 [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 18#L20 [43] L20-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~y2~0_8 v_ULTIMATE.start_main_~y1~0_8) (= v_ULTIMATE.start_main_~y2~0_7 (+ v_ULTIMATE.start_main_~y2~0_8 (* (- 1) v_ULTIMATE.start_main_~y1~0_8)))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_8} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y2~0] 17#L20-2 [2020-06-22 00:52:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:44,388 INFO L82 PathProgramCache]: Analyzing trace with hash 81, now seen corresponding path program 2 times [2020-06-22 00:52:44,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:44,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:44,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:44,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2430, now seen corresponding path program 1 times [2020-06-22 00:52:44,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:44,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:44,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:44,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash 79310, now seen corresponding path program 1 times [2020-06-22 00:52:44,405 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:44,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:44,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:44,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:44,607 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:44,609 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:44,609 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:44,609 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:44,609 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:52:44,609 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:44,610 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:44,610 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:44,610 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-06-22 00:52:44,610 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:44,610 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:44,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:44,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:44,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:44,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:44,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:44,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,164 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:45,165 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:45,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:45,180 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:45,190 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:45,190 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} 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 00:52:45,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:45,233 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:45,268 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:45,268 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 00:52:45,280 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:45,280 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 00:52:45,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:52:45,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:45,513 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:52:45,516 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:45,516 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:45,516 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:45,516 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:45,517 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:52:45,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:52:45,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:45,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:45,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Lasso [2020-06-22 00:52:45,517 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:45,517 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:45,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:45,895 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:45,901 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:52:45,904 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:45,905 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:45,906 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:52:45,906 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:45,907 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:45,907 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:45,909 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:52:45,909 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:52:45,912 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:45,912 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:45,929 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:45,930 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:45,930 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:45,930 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:45,933 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:45,934 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:45,948 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:45,949 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:45,950 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:45,950 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:45,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:45,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:45,954 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:45,954 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:46,016 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:52:46,060 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-06-22 00:52:46,060 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2020-06-22 00:52:46,063 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:52:46,070 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-06-22 00:52:46,071 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:52:46,072 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2020-06-22 00:52:46,085 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-06-22 00:52:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:46,264 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-22 00:52:46,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:46,307 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:46,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:46,477 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 00:52:46,480 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-06-22 00:52:46,481 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-22 00:52:46,580 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states and 6 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 13 states and 23 transitions. Complement of second has 6 states. [2020-06-22 00:52:46,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 00:52:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 00:52:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-06-22 00:52:46,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 00:52:46,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:46,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 00:52:46,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:46,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 00:52:46,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:46,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 23 transitions. [2020-06-22 00:52:46,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 00:52:46,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 15 transitions. [2020-06-22 00:52:46,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 00:52:46,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-06-22 00:52:46,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 15 transitions. [2020-06-22 00:52:46,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 00:52:46,605 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-06-22 00:52:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 15 transitions. [2020-06-22 00:52:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-06-22 00:52:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 00:52:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2020-06-22 00:52:46,608 INFO L729 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-06-22 00:52:46,609 INFO L609 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-06-22 00:52:46,609 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-22 00:52:46,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 14 transitions. [2020-06-22 00:52:46,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 00:52:46,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:46,611 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:46,611 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 00:52:46,611 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:46,612 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 75#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 81#L20 [39] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~y2~0_1 v_ULTIMATE.start_main_~y1~0_2) (= v_ULTIMATE.start_main_~y1~0_1 (+ (* (- 1) v_ULTIMATE.start_main_~y2~0_1) v_ULTIMATE.start_main_~y1~0_2))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_2, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_1, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~y1~0] 76#L20-2 [2020-06-22 00:52:46,613 INFO L796 eck$LassoCheckResult]: Loop: 76#L20-2 [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 77#L20 [43] L20-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~y2~0_8 v_ULTIMATE.start_main_~y1~0_8) (= v_ULTIMATE.start_main_~y2~0_7 (+ v_ULTIMATE.start_main_~y2~0_8 (* (- 1) v_ULTIMATE.start_main_~y1~0_8)))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_8} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y2~0] 76#L20-2 [2020-06-22 00:52:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash 79337, now seen corresponding path program 1 times [2020-06-22 00:52:46,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:46,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:46,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:46,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2430, now seen corresponding path program 2 times [2020-06-22 00:52:46,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:46,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:46,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:46,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash 76244326, now seen corresponding path program 1 times [2020-06-22 00:52:46,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:46,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:46,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:46,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:46,877 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-06-22 00:52:46,953 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:46,954 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:46,954 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:46,954 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:46,954 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:52:46,954 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:46,954 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:46,954 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:46,954 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-06-22 00:52:46,955 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:46,955 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:46,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,307 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 00:52:47,543 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:47,543 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 00:52:47,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:47,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:47,580 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:47,581 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 00:52:47,589 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:47,589 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 00:52:47,628 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:52:47,628 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:47,820 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:52:47,823 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:47,823 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:47,823 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:47,823 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:47,824 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:52:47,824 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:52:47,824 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:47,824 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:47,824 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-06-22 00:52:47,824 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:47,824 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:47,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,862 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 00:52:47,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:47,998 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:47,998 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:52:47,998 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:48,000 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:48,000 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:48,000 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:48,000 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:48,002 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:48,002 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:48,007 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:48,008 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:48,010 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:48,010 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:48,010 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:48,010 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:48,026 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:48,026 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:48,087 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:52:48,118 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 00:52:48,118 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 00:52:48,119 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:52:48,123 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-06-22 00:52:48,123 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:52:48,123 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2020-06-22 00:52:48,126 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-06-22 00:52:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:48,190 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 00:52:48,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:48,336 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:48,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:48,401 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-22 00:52:48,401 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-06-22 00:52:48,401 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 14 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-06-22 00:52:48,541 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 14 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 51 states and 84 transitions. Complement of second has 29 states. [2020-06-22 00:52:48,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-06-22 00:52:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 00:52:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-06-22 00:52:48,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 00:52:48,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:48,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 5 letters. Loop has 2 letters. [2020-06-22 00:52:48,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:48,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 3 letters. Loop has 4 letters. [2020-06-22 00:52:48,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:48,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 84 transitions. [2020-06-22 00:52:48,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 00:52:48,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 13 states and 19 transitions. [2020-06-22 00:52:48,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 00:52:48,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-22 00:52:48,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-06-22 00:52:48,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:52:48,556 INFO L706 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-06-22 00:52:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-06-22 00:52:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-06-22 00:52:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 00:52:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-06-22 00:52:48,558 INFO L729 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 00:52:48,558 INFO L609 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-06-22 00:52:48,558 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-22 00:52:48,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-06-22 00:52:48,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 00:52:48,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:48,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:48,559 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 00:52:48,559 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:48,559 INFO L794 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 207#L20-2 [2020-06-22 00:52:48,559 INFO L796 eck$LassoCheckResult]: Loop: 207#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 209#L20 [39] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~y2~0_1 v_ULTIMATE.start_main_~y1~0_2) (= v_ULTIMATE.start_main_~y1~0_1 (+ (* (- 1) v_ULTIMATE.start_main_~y2~0_1) v_ULTIMATE.start_main_~y1~0_2))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_2, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_1, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~y1~0] 207#L20-2 [2020-06-22 00:52:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash 81, now seen corresponding path program 3 times [2020-06-22 00:52:48,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:48,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:48,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:48,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2457, now seen corresponding path program 1 times [2020-06-22 00:52:48,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:48,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:48,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:48,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:48,573 INFO L82 PathProgramCache]: Analyzing trace with hash 79337, now seen corresponding path program 2 times [2020-06-22 00:52:48,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:48,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:48,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:48,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:48,628 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:48,629 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:48,629 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:48,629 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:48,629 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:52:48,629 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:48,629 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:48,629 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:48,629 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Lasso [2020-06-22 00:52:48,630 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:48,630 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:48,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:48,859 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:48,859 INFO L412 LassoAnalysis]: Checking for nontermination... 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 00:52:48,866 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:48,866 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:48,870 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:48,870 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 00:52:48,901 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:48,901 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 00:52:48,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:52:48,954 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:49,134 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:52:49,137 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:49,137 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:49,137 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:49,138 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:49,138 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:52:49,138 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:52:49,138 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:49,138 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:49,138 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Lasso [2020-06-22 00:52:49,138 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:49,138 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:49,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,165 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 00:52:49,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,274 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:49,274 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:52:49,275 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:49,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:49,276 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:52:49,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:49,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:49,276 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:49,277 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:52:49,277 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:52:49,277 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:49,278 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:49,278 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:49,279 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:49,279 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:49,279 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:49,280 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:49,281 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:49,296 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:52:49,302 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-22 00:52:49,303 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 0 variables to zero. [2020-06-22 00:52:49,303 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:52:49,305 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-06-22 00:52:49,305 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:52:49,305 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 >= 0, 1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2020-06-22 00:52:49,315 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-06-22 00:52:49,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:49,346 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-22 00:52:49,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:49,351 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:49,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:49,395 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 00:52:49,396 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 00:52:49,396 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-06-22 00:52:49,485 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 25 transitions. Complement of second has 10 states. [2020-06-22 00:52:49,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-06-22 00:52:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-22 00:52:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2020-06-22 00:52:49,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 1 letters. Loop has 2 letters. [2020-06-22 00:52:49,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:49,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-06-22 00:52:49,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:49,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 1 letters. Loop has 4 letters. [2020-06-22 00:52:49,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:49,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 25 transitions. [2020-06-22 00:52:49,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 00:52:49,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 17 transitions. [2020-06-22 00:52:49,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-22 00:52:49,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-06-22 00:52:49,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-06-22 00:52:49,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:52:49,491 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-06-22 00:52:49,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-06-22 00:52:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2020-06-22 00:52:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-06-22 00:52:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-06-22 00:52:49,494 INFO L729 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 00:52:49,494 INFO L609 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-06-22 00:52:49,494 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-22 00:52:49,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-06-22 00:52:49,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-22 00:52:49,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:49,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:49,495 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-06-22 00:52:49,496 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-06-22 00:52:49,496 INFO L794 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 283#L20-2 [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 284#L20 [43] L20-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~y2~0_8 v_ULTIMATE.start_main_~y1~0_8) (= v_ULTIMATE.start_main_~y2~0_7 (+ v_ULTIMATE.start_main_~y2~0_8 (* (- 1) v_ULTIMATE.start_main_~y1~0_8)))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_8} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y2~0] 289#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 287#L20 [2020-06-22 00:52:49,496 INFO L796 eck$LassoCheckResult]: Loop: 287#L20 [39] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~y2~0_1 v_ULTIMATE.start_main_~y1~0_2) (= v_ULTIMATE.start_main_~y1~0_1 (+ (* (- 1) v_ULTIMATE.start_main_~y2~0_1) v_ULTIMATE.start_main_~y1~0_2))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_2, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_1, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~y1~0] 288#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 287#L20 [2020-06-22 00:52:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2458657, now seen corresponding path program 1 times [2020-06-22 00:52:49,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:49,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:49,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:49,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:49,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2217, now seen corresponding path program 2 times [2020-06-22 00:52:49,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:49,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:49,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:49,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:49,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1932196663, now seen corresponding path program 2 times [2020-06-22 00:52:49,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:49,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:49,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:49,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:49,594 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:49,594 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:49,594 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:49,594 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:49,595 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:52:49,595 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:49,595 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:49,595 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:49,595 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Lasso [2020-06-22 00:52:49,595 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:49,595 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:49,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:49,679 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:49,679 INFO L412 LassoAnalysis]: Checking for nontermination... 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 00:52:49,687 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:49,688 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:49,692 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:49,692 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} 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 00:52:49,721 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:49,722 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:49,725 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:49,726 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 00:52:49,755 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:49,755 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 00:52:49,803 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:52:49,803 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:50,094 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:52:50,097 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:50,097 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:50,097 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:50,097 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:50,097 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:52:50,098 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:52:50,098 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:50,098 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:50,098 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Lasso [2020-06-22 00:52:50,098 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:50,098 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:50,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,195 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:50,195 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:52:50,196 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:50,196 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:50,197 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:52:50,197 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:50,197 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:50,197 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:50,197 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:52:50,198 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:52:50,198 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:50,199 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:50,199 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:50,200 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:52:50,200 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:50,200 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:50,200 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:50,200 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:52:50,200 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:52:50,201 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:50,202 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:50,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:50,202 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:50,202 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:50,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:50,204 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:50,204 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:50,221 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:52:50,231 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-06-22 00:52:50,231 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 00:52:50,232 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:52:50,233 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-06-22 00:52:50,233 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:52:50,233 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2020-06-22 00:52:50,252 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-06-22 00:52:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:50,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 00:52:50,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:50,352 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:50,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:50,421 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-22 00:52:50,421 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-06-22 00:52:50,421 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 5 states. [2020-06-22 00:52:50,562 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 16 states and 20 transitions. Complement of second has 8 states. [2020-06-22 00:52:50,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-22 00:52:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-06-22 00:52:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2020-06-22 00:52:50,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2020-06-22 00:52:50,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:50,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2020-06-22 00:52:50,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:50,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 00:52:50,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:50,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-06-22 00:52:50,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-06-22 00:52:50,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2020-06-22 00:52:50,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-06-22 00:52:50,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-06-22 00:52:50,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-06-22 00:52:50,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:52:50,569 INFO L706 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-06-22 00:52:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-06-22 00:52:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2020-06-22 00:52:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-06-22 00:52:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-06-22 00:52:50,570 INFO L729 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 00:52:50,570 INFO L609 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-06-22 00:52:50,571 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2020-06-22 00:52:50,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-06-22 00:52:50,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-06-22 00:52:50,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 00:52:50,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 00:52:50,572 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-06-22 00:52:50,572 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-06-22 00:52:50,572 INFO L794 eck$LassoCheckResult]: Stem: 364#ULTIMATE.startENTRY [50] ULTIMATE.startENTRY-->L20-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y1~0_13) (< 0 v_ULTIMATE.start_main_~y2~0_13)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_13, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y2~0] 365#L20-2 [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 366#L20 [43] L20-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~y2~0_8 v_ULTIMATE.start_main_~y1~0_8) (= v_ULTIMATE.start_main_~y2~0_7 (+ v_ULTIMATE.start_main_~y2~0_8 (* (- 1) v_ULTIMATE.start_main_~y1~0_8)))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_8} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y2~0] 370#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 369#L20 [2020-06-22 00:52:50,572 INFO L796 eck$LassoCheckResult]: Loop: 369#L20 [39] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~y2~0_1 v_ULTIMATE.start_main_~y1~0_2) (= v_ULTIMATE.start_main_~y1~0_1 (+ (* (- 1) v_ULTIMATE.start_main_~y2~0_1) v_ULTIMATE.start_main_~y1~0_2))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_2, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_1, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~y1~0] 368#L20-2 [46] L20-2-->L20: Formula: (< v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 366#L20 [43] L20-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~y2~0_8 v_ULTIMATE.start_main_~y1~0_8) (= v_ULTIMATE.start_main_~y2~0_7 (+ v_ULTIMATE.start_main_~y2~0_8 (* (- 1) v_ULTIMATE.start_main_~y1~0_8)))) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_8} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_8, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y2~0] 370#L20-2 [47] L20-2-->L20: Formula: (> v_ULTIMATE.start_main_~y1~0_12 v_ULTIMATE.start_main_~y2~0_12) InVars {ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} OutVars{ULTIMATE.start_main_~y1~0=v_ULTIMATE.start_main_~y1~0_12, ULTIMATE.start_main_~y2~0=v_ULTIMATE.start_main_~y2~0_12} AuxVars[] AssignedVars[] 369#L20 [2020-06-22 00:52:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2458657, now seen corresponding path program 2 times [2020-06-22 00:52:50,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:50,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:50,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:50,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2130956, now seen corresponding path program 1 times [2020-06-22 00:52:50,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:50,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:50,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-22 00:52:50,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1415120852, now seen corresponding path program 3 times [2020-06-22 00:52:50,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 00:52:50,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 00:52:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 00:52:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 00:52:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 00:52:50,676 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:50,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:50,677 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:50,677 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:50,677 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 00:52:50,677 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 00:52:50,677 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:50,677 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:50,677 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-06-22 00:52:50,677 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:50,677 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:50,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:50,742 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:50,742 INFO L412 LassoAnalysis]: Checking for nontermination... 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 00:52:50,747 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:50,757 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:50,788 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:50,788 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 00:52:50,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:50,794 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:50,823 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-22 00:52:50,823 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=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 00:52:50,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 00:52:50,828 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 00:52:50,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 00:52:50,862 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 00:52:51,371 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 00:52:51,374 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 00:52:51,374 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 00:52:51,374 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 00:52:51,374 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 00:52:51,375 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 00:52:51,375 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 00:52:51,375 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 00:52:51,375 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 00:52:51,375 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-06-22 00:52:51,375 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 00:52:51,375 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 00:52:51,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:51,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:51,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 00:52:51,449 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 00:52:51,450 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 00:52:51,450 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:51,451 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:51,451 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:51,451 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:51,451 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:51,452 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:51,453 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:51,455 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:51,456 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:51,456 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:51,457 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:51,457 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:51,457 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:51,458 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-22 00:52:51,458 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-22 00:52:51,462 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-22 00:52:51,462 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 00:52:51,463 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 00:52:51,463 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 00:52:51,463 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 00:52:51,463 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 00:52:51,463 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 00:52:51,464 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 00:52:51,464 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 00:52:51,469 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 00:52:51,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 00:52:51,473 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2020-06-22 00:52:51,474 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 00:52:51,474 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 00:52:51,474 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 00:52:51,474 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0) = 1*ULTIMATE.start_main_~y1~0 Supporting invariants [] [2020-06-22 00:52:51,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 00:52:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 00:52:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:51,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 00:52:51,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:51,514 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2020-06-22 00:52:51,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 00:52:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:51,571 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:51,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 00:52:51,662 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-06-22 00:52:51,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 00:52:51,674 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 7 predicates after loop cannibalization [2020-06-22 00:52:51,674 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 7 loop predicates [2020-06-22 00:52:51,674 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-06-22 00:52:52,072 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 61 states and 87 transitions. Complement of second has 43 states. [2020-06-22 00:52:52,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 8 non-accepting loop states 2 accepting loop states [2020-06-22 00:52:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 00:52:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 21 transitions. [2020-06-22 00:52:52,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 21 transitions. Stem has 4 letters. Loop has 4 letters. [2020-06-22 00:52:52,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:52,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2020-06-22 00:52:52,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:52,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 21 transitions. Stem has 4 letters. Loop has 8 letters. [2020-06-22 00:52:52,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 00:52:52,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2020-06-22 00:52:52,081 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 00:52:52,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2020-06-22 00:52:52,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-22 00:52:52,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-22 00:52:52,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-22 00:52:52,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-22 00:52:52,082 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 00:52:52,082 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 00:52:52,082 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-22 00:52:52,082 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2020-06-22 00:52:52,082 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-22 00:52:52,082 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-22 00:52:52,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-22 00:52:52,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 12:52:52 BasicIcfg [2020-06-22 00:52:52,089 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 00:52:52,090 INFO L168 Benchmark]: Toolchain (without parser) took 9192.97 ms. Allocated memory was 514.9 MB in the beginning and 632.8 MB in the end (delta: 118.0 MB). Free memory was 437.0 MB in the beginning and 583.9 MB in the end (delta: -146.9 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 00:52:52,091 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 514.9 MB. Free memory is still 457.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 00:52:52,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.49 ms. Allocated memory was 514.9 MB in the beginning and 569.4 MB in the end (delta: 54.5 MB). Free memory was 436.3 MB in the beginning and 541.3 MB in the end (delta: -105.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.70 ms. Allocated memory is still 569.4 MB. Free memory was 541.3 MB in the beginning and 539.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,092 INFO L168 Benchmark]: Boogie Preprocessor took 22.85 ms. Allocated memory is still 569.4 MB. Free memory was 539.6 MB in the beginning and 538.8 MB in the end (delta: 834.0 kB). Peak memory consumption was 834.0 kB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,093 INFO L168 Benchmark]: RCFGBuilder took 302.18 ms. Allocated memory is still 569.4 MB. Free memory was 538.8 MB in the beginning and 527.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,093 INFO L168 Benchmark]: BlockEncodingV2 took 109.99 ms. Allocated memory is still 569.4 MB. Free memory was 527.0 MB in the beginning and 522.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,094 INFO L168 Benchmark]: TraceAbstraction took 189.08 ms. Allocated memory is still 569.4 MB. Free memory was 521.2 MB in the beginning and 512.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. [2020-06-22 00:52:52,094 INFO L168 Benchmark]: BuchiAutomizer took 8130.91 ms. Allocated memory was 569.4 MB in the beginning and 632.8 MB in the end (delta: 63.4 MB). Free memory was 512.8 MB in the beginning and 583.9 MB in the end (delta: -71.1 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 00:52:52,098 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 514.9 MB. Free memory is still 457.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 385.49 ms. Allocated memory was 514.9 MB in the beginning and 569.4 MB in the end (delta: 54.5 MB). Free memory was 436.3 MB in the beginning and 541.3 MB in the end (delta: -105.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 46.70 ms. Allocated memory is still 569.4 MB. Free memory was 541.3 MB in the beginning and 539.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 22.85 ms. Allocated memory is still 569.4 MB. Free memory was 539.6 MB in the beginning and 538.8 MB in the end (delta: 834.0 kB). Peak memory consumption was 834.0 kB. Max. memory is 50.3 GB. * RCFGBuilder took 302.18 ms. Allocated memory is still 569.4 MB. Free memory was 538.8 MB in the beginning and 527.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 109.99 ms. Allocated memory is still 569.4 MB. Free memory was 527.0 MB in the beginning and 522.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 189.08 ms. Allocated memory is still 569.4 MB. Free memory was 521.2 MB in the beginning and 512.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 8130.91 ms. Allocated memory was 569.4 MB in the beginning and 632.8 MB in the end (delta: 63.4 MB). Free memory was 512.8 MB in the beginning and 583.9 MB in the end (delta: -71.1 MB). There was no memory consumed. 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 6 terminating modules (1 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function -1 * y1 + y2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y1 + y2 and consists of 6 locations. One nondeterministic module has affine ranking function 2 * y1 + 1 and consists of 6 locations. One nondeterministic module has affine ranking function y1 + -1 * y2 and consists of 5 locations. One nondeterministic module has affine ranking function y1 and consists of 11 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 5.8s. Construction of modules took 0.3s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 10 SDtfs, 64 SDslu, 0 SDs, 0 SdLazy, 137 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf92 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf95 smp100 dnf100 smp100 tf101 neg100 sie126 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-06-22 00:52:38.207 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 00:52:52.337 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check