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[求助] 求解非线性约束优化问题提示Solver stopped prematurely怎么解决

在求解一个含有非线性约束的优化函数时，提示Solver stopped prematurely.

fmincon stopped because it exceeded the function evaluation limit,
options.MaxFunEvals = 400 (the default value).
还有
Local minimum found that satisfies the constraints.

Optimization completed because the objective function is non-decreasing in
feasible directions, to within the default value of the function tolerance,
and constraints were satisfied to within the default value of the constraint tolerance.

<stopping criteria details>

Active inequalities (to within options.TolCon = 1e-006):
  lower    upper    ineqlin ineqnonlin
3       1
4
是怎么回事？怎么解决，望大神指导，不胜感激

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