I have a MIP where two continuous variables x and y are equivalent. So in the solution the sum (denoted by s) of x and y is determined/fixed, but there are infinite many choices of feasible solutions. I have some prior knowledge about the model and thus seek for a solution where x is close to s and y is close to 0, I will set both Start and VarHintVal to guide the algorithm to converge to the desired solution. However, the returned solution is always x = 0 while y = s.
Did I misunderstand the meaning of Start and VarHintVal? What is the best way to achieve this?
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