Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:40:33 2013

Optimize a model with 682 rows, 38502 columns and 76942 nonzeros
Presolve time: 0.05s
Presolved: 682 rows, 38502 columns, 76942 nonzeros
Variable types: 38440 continuous, 62 integer (62 binary)

Root relaxation: objective 7.011209e+04, 1585 iterations, 0.05 seconds

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

     0     0 70112.0894    0    4          - 70112.0894     -      -    0s
H    0     0                    73289.000000 70112.0894  4.33%     -    0s
     0     0 70648.8292    0    4 73289.0000 70648.8292  3.60%     -    0s
H    0     0                    72630.000000 70648.8292  2.73%     -    0s
H    0     0                    70985.000000 70648.8292  0.47%     -    0s
     0     0 70734.5323    0    4 70985.0000 70734.5323  0.35%     -    0s
     0     0 70752.3388    0    5 70985.0000 70752.3388  0.33%     -    0s
     0     0 70762.8211    0    4 70985.0000 70762.8211  0.31%     -    0s
     0     0 70772.4484    0    5 70985.0000 70772.4484  0.30%     -    0s
     0     0 70775.9990    0    4 70985.0000 70775.9990  0.29%     -    0s
     0     0 70775.9990    0    4 70985.0000 70775.9990  0.29%     -    0s
     0     0 70778.5373    0    3 70985.0000 70778.5373  0.29%     -    0s
     0     0 70778.8242    0    3 70985.0000 70778.8242  0.29%     -    0s
     0     0 70980.4516    0    1 70985.0000 70980.4516  0.01%     -    0s

Cutting planes:
  Implied bound: 73
  Flow cover: 1

Explored 0 nodes (2162 simplex iterations) in 0.78 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.098500000000e+04, best bound 7.098045161290e+04, gap 0.0064%