Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:41 2013

Optimize a model with 480 rows, 4240 columns and 8820 nonzeros
Presolve removed 80 rows and 60 columns
Presolve time: 0.02s
Presolved: 400 rows, 4180 columns, 8600 nonzeros
Variable types: 4100 continuous, 80 integer (80 binary)

Root relaxation: objective 3.860476e+04, 508 iterations, 0.01 seconds

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

     0     0 38604.7615    0    3          - 38604.7615     -      -    0s
H    0     0                    39080.807514 38604.7615  1.22%     -    0s
     0     2 38703.4932    0    3 39080.8075 38703.4932  0.97%     -    0s
H    5     4                    38878.339691 38772.1992  0.27%  16.0    0s
*    6     2               5    38858.752096 38772.1992  0.22%  14.7    0s

Explored 12 nodes (665 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.885875209612e+04, best bound 3.885875209612e+04, gap 0.0%