Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:54 2013

Optimize a model with 19888 rows, 19448 columns and 77528 nonzeros
Presolve removed 44 rows and 0 columns
Presolve time: 0.08s
Presolved: 19844 rows, 19448 columns, 77484 nonzeros
Variable types: 19404 continuous, 44 integer (44 binary)

Root relaxation: objective 3.630783e+04, 2177 iterations, 0.39 seconds

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

     0     0 36307.8297    0   37          - 36307.8297     -      -    0s
H    0     0                    42451.000000 36307.8297  14.5%     -    0s
     0     0 39784.3261    0    2 42451.0000 39784.3261  6.28%     -    1s
H    0     0                    41422.926087 39784.3261  3.96%     -    1s
H    0     0                    41022.000000 39784.3261  3.02%     -    1s
H    0     0                    39912.000000 39784.3261  0.32%     -    1s
     0     2 39786.8619    0    2 39912.0000 39786.8619  0.31%     -    1s
*    7     0               2    39870.000000 39870.0000   0.0%  90.6    1s

Cutting planes:
  Gomory: 1
  Implied bound: 32

Explored 8 nodes (3832 simplex iterations) in 1.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.987000000000e+04, best bound 3.987000000000e+04, gap 0.0%