Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:58:40 2013

Optimize a model with 1700 rows, 28100 columns and 58050 nonzeros
Presolve removed 100 rows and 150 columns
Presolve time: 0.18s
Presolved: 1600 rows, 27950 columns, 55900 nonzeros
Variable types: 27000 continuous, 950 integer (950 binary)

Root relaxation: objective 2.246016e+05, 2766 iterations, 0.11 seconds

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

     0     0 224601.597    0    1          - 224601.597     -      -    0s
H    0     0                    235112.04333 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     0 224601.597    0    1 235112.043 224601.597  4.47%     -    0s
     0     2 224657.199    0    1 235112.043 224657.199  4.45%     -    0s
H   27    20                    225260.38455 224774.805  0.22%  23.0    1s
*  251     4               4    224847.24808 224790.055  0.03%   4.8    3s

Cutting planes:
  Flow cover: 3

Explored 256 nodes (4346 simplex iterations) in 3.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.248472480793e+05, best bound 2.248472480793e+05, gap 0.0%