Population Simplex Evolution is chosen as optimization method.
The parameters for optimisation can either be left as default values or user-specified. In this case Population size is set to 16, No of points in simplex is set to 4 and maximum No of model evaluations is reduced to 160 (default is 500).
Normally ending the optimisation by meeting the convergence criteria should be preferred. Convergence criteria are a measure of the relative change in best objective function value in the last number of loops of convergence where the number of loops of convergence is also user-specified.