function fail = regress_bmibnb_gamsrobot(ops) x1 = sdpvar(1,1); x2 = sdpvar(1,1); t = sdpvar(1,1); F = set([x1;x2]>0); F = F + set(- x1 + x2 < 1); F = F + set(x1 - x2 < 1); F = F + set(- x1 + 2*x2 < 3); F = F + set(2*x1 - x2 < 3); obj = (2*x1 - 2*x1*x1 + 2*x1*x2 + 3*x2 - 2*x2*x2); F = F + set(obj