CVXPY
Minimize
  abs(x + y)
Subject To
Bounds
 x free
 y free
End
----------------------------------------
AFTER COMPILATION
Minimize
  C0
Subject To
 R0: - C0 + C1 + C2 <= 0
 R1: - C0 - C1 - C2 <= 0
Bounds
 C0 free
 C1 free
 C2 free
End
----------------------------------------
GUROBI
Minimize
  abs_2
Subject To
 R0: - x - y + AddExpression_1 = 0
Bounds
 x free
 y free
 AddExpression_1 free
General Constraints
 GC0: abs_2 = ABS ( AddExpression_1 )
End