CVXPY
Maximize
  x + n + b
Subject To
 13: n <= 1.0
Bounds
 x <= 0.0
 n free
Binaries
 b
Generals
 n
End
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AFTER COMPILATION
OBJECTIVE
  Sense            : minimize
VARIABLES
  [binary] <x_2>: obj=-1, original bounds=[0,1]
  [integer] <x_1>: obj=-1, original bounds=[-inf,+inf]
  [continuous] <x_0>: obj=-1, original bounds=[-inf,+inf]
CONSTRAINTS
  [linear] <c1>: <x_0>[C] <= 0;
  [linear] <c2>: <x_1>[I] <= 1;
END
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SCIP
OBJECTIVE
  Sense            : maximize
VARIABLES
  [binary] <b>: obj=1, original bounds=[0,1]
  [integer] <n>: obj=1, original bounds=[-inf,+inf]
  [continuous] <x>: obj=1, original bounds=[-inf,0]
CONSTRAINTS
  [linear] <13>: <n>[I] <= 1;
END