CVXPY
Maximize
  log(x)
Subject To
 5: x <= 0.5
Bounds
 x free
End
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AFTER COMPILATION
Either candidate conic solvers (['SCIP']) do not support the cones output by the problem (ExpCone, NonNeg), or there are not enough constraints in the problem.
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SCIP
OBJECTIVE
  Sense            : maximize
VARIABLES
  [continuous] <x_0>: obj=0, original bounds=[-inf,+inf]
  [continuous] <x2>: obj=1, original bounds=[-inf,+inf]
CONSTRAINTS
  [nonlinear] <c1>: log((<x_0>))+<x2>*(-1) >= 0;
  [linear] <5_0>: <x_0>[C] <= 0.5;
END