Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:48:21 2013

Optimize a model with 280 rows, 24060 columns and 68080 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.09s
Presolved: 260 rows, 24040 columns, 48060 nonzeros
Variable types: 24040 continuous, 0 integer (0 binary)

Root relaxation: objective 4.370285e+04, 501 iterations, 0.02 seconds

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

     0     0 43702.8549    0    2          - 43702.8549     -      -    0s
     0     2 43702.8549    0    2          - 43702.8549     -      -    0s
*   32    20              16    44224.151094 43852.1529  0.84%   9.9    0s
*   56    15              13    44051.546979 43878.1255  0.39%   7.9    0s
*   80     7              14    43900.868905 43896.9453  0.01%   6.4    0s

Explored 81 nodes (1014 simplex iterations) in 0.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390086890462e+04, best bound 4.389694531587e+04, gap 0.0089%