CVXPY
Minimize
  x + -y
Subject To
 12: y <= 1.0
Bounds
 0.0 <= x
 0.0 <= y
End
----------------------------------------
AFTER COMPILATION
OBJECTIVE
  Sense            : minimize
VARIABLES
  [continuous] <x_0>: obj=1, original bounds=[-inf,+inf]
  [continuous] <x_1>: obj=-1, original bounds=[-inf,+inf]
CONSTRAINTS
  [linear] <c1>:  -<x_0>[C] <= 0;
  [linear] <c2>:  -<x_1>[C] <= 0;
  [linear] <c3>: <x_1>[C] <= 1;
END
----------------------------------------
SCIP
OBJECTIVE
  Sense            : minimize
VARIABLES
  [continuous] <x>: obj=1, original bounds=[0,+inf]
  [continuous] <y>: obj=-1, original bounds=[0,+inf]
CONSTRAINTS
  [linear] <12>: <y>[C] <= 1;
END