switching to native linear equation solver by default and power iteration

src/storm/settings/modules/CoreSettings.cpp

@@ -45,7 +45,7 @@ namespace storm {
                 
                 std::vector<std::string> linearEquationSolver = {"gmm++", "native", "eigen", "elimination", "topological"};
                 this->addOption(storm::settings::OptionBuilder(moduleName, eqSolverOptionName, false, "Sets which solver is preferred for solving systems of linear equations.")
-                                .addArgument(storm::settings::ArgumentBuilder::createStringArgument("name", "The name of the solver to prefer.").addValidatorString(ArgumentValidatorFactory::createMultipleChoiceValidator(linearEquationSolver)).setDefaultValueString("gmm++").build()).build());
+                                .addArgument(storm::settings::ArgumentBuilder::createStringArgument("name", "The name of the solver to prefer.").addValidatorString(ArgumentValidatorFactory::createMultipleChoiceValidator(linearEquationSolver)).setDefaultValueString("native").build()).build());
                 
                 std::vector<std::string> ddLibraries = {"cudd", "sylvan"};
                 this->addOption(storm::settings::OptionBuilder(moduleName, ddLibraryOptionName, false, "Sets which library is preferred for decision-diagram operations.")

src/storm/settings/modules/NativeEquationSolverSettings.cpp

@@ -27,7 +27,7 @@ namespace storm {
 
             NativeEquationSolverSettings::NativeEquationSolverSettings() : ModuleSettings(moduleName) {
                 std::vector<std::string> methods = { "jacobi", "gaussseidel", "sor", "walkerchae", "power", "sound-value-iteration", "svi", "interval-iteration", "ii", "ratsearch" };
-                this->addOption(storm::settings::OptionBuilder(moduleName, techniqueOptionName, true, "The method to be used for solving linear equation systems with the native engine.").addArgument(storm::settings::ArgumentBuilder::createStringArgument("name", "The name of the method to use.").addValidatorString(ArgumentValidatorFactory::createMultipleChoiceValidator(methods)).setDefaultValueString("jacobi").build()).build());
+                this->addOption(storm::settings::OptionBuilder(moduleName, techniqueOptionName, true, "The method to be used for solving linear equation systems with the native engine.").addArgument(storm::settings::ArgumentBuilder::createStringArgument("name", "The name of the method to use.").addValidatorString(ArgumentValidatorFactory::createMultipleChoiceValidator(methods)).setDefaultValueString("power").build()).build());
                 
                 this->addOption(storm::settings::OptionBuilder(moduleName, maximalIterationsOptionName, false, "The maximal number of iterations to perform before iterative solving is aborted.").setShortName(maximalIterationsOptionShortName).addArgument(storm::settings::ArgumentBuilder::createUnsignedIntegerArgument("count", "The maximal iteration count.").setDefaultValueUnsignedInteger(20000).build()).build());