Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:51 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 3.530926e+04, 1845 iterations, 0.35 seconds

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

     0     0 35309.2616    0   33          - 35309.2616     -      -    0s
H    0     0                    41570.000000 35309.2616  15.1%     -    0s
     0     0 38721.3594    0    7 41570.0000 38721.3594  6.85%     -    1s
H    0     0                    41175.039273 38721.3594  5.96%     -    1s
H    0     0                    39684.000000 38721.3594  2.43%     -    1s
H    0     0                    39481.000000 38721.3594  1.92%     -    1s
     0     0 38914.0398    0    4 39481.0000 38914.0398  1.44%     -    1s
H    0     0                    39145.000000 38914.0398  0.59%     -    1s
     0     0 39112.6286    0    3 39145.0000 39112.6286  0.08%     -    1s
     0     2 39113.9714    0    3 39145.0000 39113.9714  0.08%     -    2s
*    4     2               3    39143.000000 39113.9714  0.07%  28.5    2s

Cutting planes:
  Implied bound: 29

Explored 7 nodes (3258 simplex iterations) in 2.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.914300000000e+04, best bound 3.914300000000e+04, gap 0.0%