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                                            Gioni Mexi

SCIP tests fail when using HiGHs as the solver

The error happens when solving an LP in strong branching. The `model_status_` of highs changes from `kIterationLimit` to `kNotSet` when turning presolve back on after the LP solve https://github.com/scipopt/scip/blob/master/src/lpi/lpi_highs.cpp#L519 `HIGHS_CALL(...

SCIP tests fail when using HiGHs as the solver

Sounds good, I will prepare a MR for this

Detection of non-linear/non-convex problem

Hi, I am facing the same issue for some problems with quadratic constraints. I am using a recent Xpress version (9.5) and #285 seems to fix the issue for me....