Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:46 2013

Optimize a model with 16440 rows, 16040 columns and 64040 nonzeros
Presolve removed 916 rows and 0 columns
Presolve time: 0.08s
Presolved: 15524 rows, 16040 columns, 62208 nonzeros
Variable types: 16000 continuous, 40 integer (40 binary)

Root relaxation: objective 3.830712e+04, 2336 iterations, 0.18 seconds

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

     0     0 38307.1194    0    2          - 38307.1194     -      -    0s
H    0     0                    38473.000000 38307.1194  0.43%     -    0s
     0     0 38307.1495    0    3 38473.0000 38307.1495  0.43%     -    0s
     0     2 38311.6549    0    3 38473.0000 38311.6549  0.42%     -    0s
*    3     3               3    38399.000000 38362.0294  0.10%  48.3    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 8 nodes (2576 simplex iterations) in 0.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.839900000000e+04, best bound 3.839900000000e+04, gap 0.0%