Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:31:30 2013

Optimize a model with 1500 rows, 51100 columns and 270850 nonzeros
Presolve removed 50 rows and 5650 columns
Presolve time: 0.40s
Presolved: 1450 rows, 45450 columns, 250850 nonzeros
Variable types: 45050 continuous, 400 integer (400 binary)

Root relaxation: objective 2.246016e+05, 2707 iterations, 0.13 seconds

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

     0     0 224601.597    0    5          - 224601.597     -      -    0s
H    0     0                    225256.73354 224601.597  0.29%     -    0s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    1s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    1s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    1s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    1s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    1s
     0     0 224601.597    0    5 225256.734 224601.597  0.29%     -    2s
     0     2 224601.597    0    5 225256.734 224601.597  0.29%     -    2s
*    5     0               4    224847.24808 224847.248   0.0%   107    3s

Cutting planes:
  Flow cover: 2

Explored 6 nodes (5114 simplex iterations) in 3.07 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%