CVXPY
Maximize
  Sum(X, None, False)
Subject To
Bounds
 [0. 1. 2. 3.] <= X[[ True  True], [ True  True]]
 X[[ True  True], [ True  True]] <= [1. 2. 3. 4.]
End
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AFTER COMPILATION
Minimize
 Obj: -1 x_0 -1 x_1 -1 x_2 -1 x_3
Subject to
 c1: -1 x_0 <= +0
 c2: -1 x_2 <= -1
 c3: -1 x_1 <= -2
 c4: -1 x_3 <= -3
 c5: +1 x_0 <= +1
 c6: +1 x_2 <= +2
 c7: +1 x_1 <= +3
 c8: +1 x_3 <= +4
Bounds
 x_0 free
 x_1 free
 x_2 free
 x_3 free
End
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SCIP
Maximize
 Obj: +1 X_0_0 +1 X_0_1 +1 X_1_0 +1 X_1_1
Subject to
Bounds
 0 <= X_0_0 <= 1
 1 <= X_0_1 <= 2
 2 <= X_1_0 <= 3
 3 <= X_1_1 <= 4
End