Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:28 2013

Optimize a model with 570 rows, 1760 columns and 4505 nonzeros
Presolve removed 10 rows and 15 columns
Presolve time: 0.05s
Presolved: 560 rows, 1745 columns, 3490 nonzeros
Variable types: 1250 continuous, 495 integer (495 binary)

Root relaxation: objective 1.174557e+04, 38 iterations, 0.00 seconds

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

     0     0 11745.5748    0    1          - 11745.5748     -      -    0s
     0     0 11746.2275    0    2          - 11746.2275     -      -    0s
     0     0 11746.2501    0    2          - 11746.2501     -      -    0s
     0     2 11746.5541    0    2          - 11746.5541     -      -    0s
*   59    10              59    11806.536883 11774.1254  0.27%   1.8    0s
*   66     9               7    11790.176791 11774.2186  0.14%   1.9    0s
*   74     8               8    11789.107295 11775.0925  0.12%   1.9    0s
*   75     7               7    11786.867743 11775.0925  0.10%   1.9    0s
*   81     5               8    11785.262717 11775.3912  0.08%   1.9    0s
*   82     4               7    11783.516190 11775.3912  0.07%   1.9    0s
*   87     3               7    11780.901979 11776.7805  0.03%   2.0    0s
*   91     0               8    11779.402625 11779.4026   0.0%   2.1    0s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 92 nodes (328 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.177940262477e+04, best bound 1.177940262477e+04, gap 0.0%