Gurobi 5.0.1 (linux64) logging started Sat Dec  8 03:30:35 2012

Optimize a model with 1635 rows, 1620 columns and 5927 nonzeros
Presolve removed 190 rows and 45 columns
Presolve time: 0.02s
Presolved: 1445 rows, 1575 columns, 5512 nonzeros
Variable types: 1405 continuous, 170 integer (170 binary)

Root relaxation: objective 5.935406e+04, 257 iterations, 0.00 seconds

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

     0     0 59354.0588    0    2          - 59354.0588     -      -    0s
H    0     0                    59479.000000 59354.0588  0.21%     -    0s
     0     0 59451.7772    0    3 59479.0000 59451.7772  0.05%     -    0s
     0     0 59451.7772    0    2 59479.0000 59451.7772  0.05%     -    0s
     0     0 59460.0461    0    4 59479.0000 59460.0461  0.03%     -    0s
     0     0 59460.1313    0    4 59479.0000 59460.1313  0.03%     -    0s
     0     2 59463.5832    0    4 59479.0000 59463.5832  0.03%     -    0s
*    3     1               1    59474.000000 59472.5063  0.00%   7.7    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 4 nodes (444 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.947400000000e+04, best bound 5.947250632911e+04, gap 0.0025%