Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:11:49 2012

Optimize a model with 3000 rows, 2970 columns and 11324 nonzeros
Presolve removed 208 rows and 33 columns
Presolve time: 0.02s
Presolved: 2792 rows, 2937 columns, 10886 nonzeros
Variable types: 2763 continuous, 174 integer (174 binary)

Root relaxation: objective 6.068619e+04, 285 iterations, 0.00 seconds

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

     0     0 60686.1872    0   13          - 60686.1872     -      -    0s
H    0     0                    63088.000000 60686.1872  3.81%     -    0s
H    0     0                    61737.000000 60686.1872  1.70%     -    0s
     0     0 60732.3769    0   22 61737.0000 60732.3769  1.63%     -    0s
     0     0 60746.9833    0   24 61737.0000 60746.9833  1.60%     -    0s
     0     0 60752.8233    0   28 61737.0000 60752.8233  1.59%     -    0s
     0     0 60753.4617    0   19 61737.0000 60753.4617  1.59%     -    0s
     0     0 60753.4617    0   19 61737.0000 60753.4617  1.59%     -    0s
H    0     0                    61691.000000 60753.4617  1.52%     -    0s
H    0     0                    61425.000000 60753.4617  1.09%     -    0s
     0     2 60755.0148    0   19 61425.0000 60755.0148  1.09%     -    0s
*   13    12              11    60920.000000 60795.7266  0.20%   5.7    0s
*   24     8               8    60840.000000 60801.0984  0.06%   4.8    0s

Cutting planes:
  Gomory: 2
  Flow cover: 16

Explored 34 nodes (479 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.084000000000e+04, best bound 6.084000000000e+04, gap 0.0%