Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:19:39 2013

Optimize a model with 858 rows, 60918 columns and 121758 nonzeros
Presolve time: 0.09s
Presolved: 858 rows, 60918 columns, 121758 nonzeros
Variable types: 60840 continuous, 78 integer (78 binary)

Root relaxation: objective 8.943492e+04, 2487 iterations, 0.09 seconds

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

     0     0 89434.9159    0    4          - 89434.9159     -      -    0s
H    0     0                    94245.000000 89434.9159  5.10%     -    0s
H    0     0                    90469.000000 89434.9159  1.14%     -    0s
     0     0 89744.1831    0    3 90469.0000 89744.1831  0.80%     -    0s
     0     0 89789.9728    0    3 90469.0000 89789.9728  0.75%     -    0s
     0     0 89789.9728    0    4 90469.0000 89789.9728  0.75%     -    0s
     0     0 89789.9728    0    3 90469.0000 89789.9728  0.75%     -    1s
     0     0 89790.1143    0    3 90469.0000 89790.1143  0.75%     -    1s
     0     0 89801.4195    0    3 90469.0000 89801.4195  0.74%     -    1s
     0     0 89810.1285    0    3 90469.0000 89810.1285  0.73%     -    1s
     0     0 89810.1285    0    3 90469.0000 89810.1285  0.73%     -    1s
     0     0 89810.1285    0    3 90469.0000 89810.1285  0.73%     -    1s
     0     2 89813.9538    0    3 90469.0000 89813.9538  0.72%     -    1s
H    6     4                    90103.000000 89894.8522  0.23%   132    1s
H    7     4                    90102.000000 89894.8522  0.23%   113    2s
H    8     4                    90097.000000 89894.8522  0.22%   100    2s
*    9     3               8    90066.000000 89894.8522  0.19%  92.1    2s

Cutting planes:
  Implied bound: 94
  Flow cover: 6

Explored 13 nodes (6358 simplex iterations) in 2.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.006600000000e+04, best bound 9.006557307895e+04, gap 0.0005%