Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:43:22 2013

Optimize a model with 40383 rows, 39753 columns and 158823 nonzeros
Presolve removed 3457 rows and 0 columns
Presolve time: 0.24s
Presolved: 36926 rows, 39753 columns, 151909 nonzeros
Variable types: 39690 continuous, 63 integer (63 binary)

Root relaxation: objective 6.328065e+04, 6827 iterations, 0.97 seconds

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

     0     0 63280.6512    0    4          - 63280.6512     -      -    1s
H    0     0                    65300.000000 63280.6512  3.09%     -    1s
H    0     0                    63359.000000 63280.6512  0.12%     -    1s
     0     0 63284.7143    0    6 63359.0000 63284.7143  0.12%     -    1s
     0     0 63284.7143    0    4 63359.0000 63284.7143  0.12%     -    2s
     0     0 63289.5428    0    5 63359.0000 63289.5428  0.11%     -    2s
     0     0 63338.7751    0    4 63359.0000 63338.7751  0.03%     -    2s
     0     0 63347.4825    0    4 63359.0000 63347.4825  0.02%     -    3s
     0     0 63348.0396    0    4 63359.0000 63348.0396  0.02%     -    3s
     0     0 63348.0396    0    4 63359.0000 63348.0396  0.02%     -    3s
     0     0 63348.0396    0    4 63359.0000 63348.0396  0.02%     -    3s
     0     0 63348.0396    0    4 63359.0000 63348.0396  0.02%     -    3s
     0     0 63348.0396    0    4 63359.0000 63348.0396  0.02%     -    3s
     0     0 63356.2105    0    1 63359.0000 63356.2105  0.00%     -    3s

Cutting planes:
  Gomory: 2
  Flow cover: 9

Explored 0 nodes (9248 simplex iterations) in 3.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.335900000000e+04, best bound 6.335621052632e+04, gap 0.0044%