Model unknown

  Variables:
    Variable x :   Size=4 Domain=Reals
      1 : -1
      2 : -1
      3 : -0.333333
      4 : 1

  Objectives:
    Objective obj :   Size=1
      Value=-1.333333

  Constraints:
    Constraint c :   Size=1
      Value=1.00000000014e-6
