CVXPY
Maximize
  x
Subject To
 12: norm1(x) <= 1.0
Bounds
 x free
End
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AFTER COMPILATION
OBJECTIVE
  Sense            : minimize
VARIABLES
  [continuous] <x_0>: obj=-1, original bounds=[-inf,+inf]
  [continuous] <x_1>: obj=0, original bounds=[-inf,+inf]
CONSTRAINTS
  [linear] <c1>: <x_0>[C] -<x_1>[C] <= 0;
  [linear] <c2>:  -<x_0>[C] -<x_1>[C] <= 0;
  [linear] <c3>: <x_1>[C] <= 1;
END
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SCIP
OBJECTIVE
  Sense            : maximize
VARIABLES
  [continuous] <x_0>: obj=1, original bounds=[-inf,+inf]
CONSTRAINTS
  [nonlinear] <12>: abs((<x_0>)) <= 1;
END