Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:11 2012

Optimize a model with 482 rows, 441 columns and 2615 nonzeros
Presolve removed 150 rows and 182 columns
Presolve time: 0.01s
Presolved: 332 rows, 259 columns, 2546 nonzeros
Variable types: 20 continuous, 239 integer (239 binary)

Root relaxation: objective 2.273087e+02, 115 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0  227.30874    0   44          -  227.30874     -      -    0s
     0     0  235.37363    0   20          -  235.37363     -      -    0s
     0     0  235.62500    0   17          -  235.62500     -      -    0s
     0     0  235.62500    0   17          -  235.62500     -      -    0s
     0     0  235.62500    0   15          -  235.62500     -      -    0s
     0     2  235.75926    0   15          -  235.75926     -      -    0s
*  341    63              11     258.0000000  237.86241  7.81%   7.5    0s
*  475    48              14     257.0000000  241.83843  5.90%   7.4    0s
*  499    28              11     254.0000000  243.78444  4.02%   7.3    0s

Cutting planes:
  Learned: 4
  Gomory: 1
  Cover: 24
  Implied bound: 1
  Clique: 7
  MIR: 9
  GUB cover: 2
  Zero half: 1

Explored 550 nodes (4085 simplex iterations) in 0.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.540000000000e+02, best bound 2.540000000000e+02, gap 0.0%