How to fix optimization terminated?

Hi, I am using optimization toolbox for solving a two objective optimization model with the help of gamultiobj solver. My objective functions and Genetic algorithm parameters are attached, but I faced this error ''Optimization terminated: average change in the spread of Pareto solutions less than options.FunctionTolerance. '' ,and do not know how to fix it. Would you please help me?

clc;

clear;

close all;

fun=@(x) [-288+(2513*x(1))+(8.93.*x(2))-(2.041*x(3))...

+(11913*(x(1)^2)) , -16.55+(261.8*x(1))+(0.187*x(2))-(7.97*x(1)*x(2))];

lb=[0.017,32,14];

ub=[0.06,38,39];

opt=optimoptions('gamultiobj');

opt.PopulationSize=100;

opt.MaxGenerations=1000;

opt.FunctionTolerance=1e-4;

opt.CrossoverFraction=0.8;

opt.ParetoFraction=0.35;

[x,fval]=gamultiobj(fun,3,[],[],[],[],lb,ub,[],opt);

Answer 1

[John D'Errico]

Do you recognize that "terminated" is often used as a synonym for "done", or perhaps "finished", or even "happy as a clam at high tide"?

What would you have wanted it to tell you? The optimizer said it had found a solution that satisfied the requirements. In the eyes of the code, it was indeed happy as a clam at high tide. That you may have seen too many movies where the word "terminated" has a negative connotation, what you may see in a movie theater is not alway true. ;-)

So really, what we need to fix is not the code, but probably your understanding of the output.

Does that mean the optimizer has found a truly, global solution? Well, that is something that no such code can absolutely insure. (Even a global solver like GA when applied to a black box function where it does not see inside the code.) But as far as the code is concerned, it thinks it is done. Fini. Færdig. Terminat. Gotowe. പൂർത്തിയായതായി.