ax + y + x > 0 Not supported by gurobi?

[Debjyoti Bhattacharjee]

Hi,

I have the following constraint in my model.
m.addConstr(10000*y + w11 - v21 > 0, 'c_my121_1')

y is a binary variable, w11 and v21 are integers.

I am getting the following error -
 gurobipy.LinExpr.__richcmp__ (../../src/python/gurobipy.c:27710) NotImplementedError

Can someone kindly help to transform it into a form that gurobi can solve?
 

[Tobias Achterberg]

My guess is that this is due to the strict inequality you are using. This is not
possible with MIP solvers. But fortunately, all the variables in your constraint
are integer so that you can equivalently write

m.addConstr(10000*y + w11 - v21 >= 1, 'c_my121_1')


Regards,

Tobias