Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:48:25 2013

Optimize a model with 280 rows, 24060 columns and 68080 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.05s
Presolved: 260 rows, 24040 columns, 48060 nonzeros
Variable types: 24040 continuous, 0 integer (0 binary)

Root relaxation: objective 3.860476e+04, 407 iterations, 0.02 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
     0     2 38604.7615    0    3          - 38604.7615     -      -    0s
*   29     9              15    38861.054473 38816.4323  0.11%  13.4    0s

Explored 39 nodes (803 simplex iterations) in 0.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.886105447350e+04, best bound 3.885729417576e+04, gap 0.0097%