Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:53:12 2013

Optimize a model with 10320 rows, 24060 columns and 78100 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.47s
Presolved: 10300 rows, 24040 columns, 68080 nonzeros
Variable types: 14040 continuous, 10000 integer (10000 binary)

Root relaxation: objective 3.894400e+04, 571 iterations, 0.04 seconds

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

     0     0 38944.0027    0    4          - 38944.0027     -      -    1s
     0     0 39028.5625    0    6          - 39028.5625     -      -    1s
     0     0 39037.5640    0    5          - 39037.5640     -      -    1s
     0     0 39041.1782    0    5          - 39041.1782     -      -    1s
     0     0 39041.1951    0    5          - 39041.1951     -      -    1s
     0     0 39041.1951    0    5          - 39041.1951     -      -    1s
     0     2 39041.1951    0    5          - 39041.1951     -      -    2s
*   25     5              13    39247.138243 39247.1369  0.00%  30.0    3s

Cutting planes:
  Gomory: 2
  Implied bound: 12
  Flow cover: 1

Explored 26 nodes (1642 simplex iterations) in 3.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.924713824325e+04, best bound 3.924713693015e+04, gap 0.0000%