Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:02:44 2013

Optimize a model with 25800 rows, 75150 columns and 225250 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.90s
Presolved: 25750 rows, 75100 columns, 200200 nonzeros
Variable types: 50100 continuous, 25000 integer (25000 binary)

Root relaxation: objective 2.208160e+05, 3827 iterations, 0.21 seconds

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

     0     0 220815.985    0    8          - 220815.985     -      -    1s
     0     0 220937.074    0    4          - 220937.074     -      -    2s
     0     0 220972.386    0    6          - 220972.386     -      -    2s
     0     0 220973.138    0    6          - 220973.138     -      -    3s
     0     0 220977.061    0    6          - 220977.061     -      -    3s
     0     0 220977.061    0    6          - 220977.061     -      -    3s
     0     0 220977.061    0    6          - 220977.061     -      -    3s
     0     0 220977.061    0    6          - 220977.061     -      -    4s
     0     0 220977.061    0    6          - 220977.061     -      -    4s
     0     2 220977.061    0    6          - 220977.061     -      -    9s
    11    13 226865.497    6    6          - 221212.240     -    178   10s
*   52    12              26    221476.99200 221240.319  0.11%  75.8   12s

Cutting planes:
  Gomory: 1
  Implied bound: 40
  Flow cover: 3

Explored 64 nodes (10330 simplex iterations) in 12.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.214769919976e+05, best bound 2.214758399853e+05, gap 0.0005%