Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:36:13 2012

Optimize a model with 825 rows, 810 columns and 2957 nonzeros
Presolve removed 86 rows and 27 columns
Presolve time: 0.00s
Presolved: 739 rows, 783 columns, 2801 nonzeros
Variable types: 697 continuous, 86 integer (86 binary)

Root relaxation: objective 2.881995e+04, 156 iterations, 0.00 seconds

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

     0     0 28819.9472    0   13          - 28819.9472     -      -    0s
H    0     0                    31436.000000 28819.9472  8.32%     -    0s
     0     0 29134.8318    0   18 31436.0000 29134.8318  7.32%     -    0s
     0     0 29287.9059    0   20 31436.0000 29287.9059  6.83%     -    0s
     0     0 29413.7581    0   28 31436.0000 29413.7581  6.43%     -    0s
     0     0 29424.6343    0   27 31436.0000 29424.6343  6.40%     -    0s
     0     0 29427.0969    0   31 31436.0000 29427.0969  6.39%     -    0s
     0     2 29431.3687    0   31 31436.0000 29431.3687  6.38%     -    0s
*   28    24              24    30199.000000 29557.2031  2.13%   8.6    0s
*   77    47              25    30195.000000 29598.3934  1.98%   8.2    0s
H  100    48                    30079.513158 29619.8093  1.53%   7.5    0s
*  101    44              25    30018.000000 29619.8093  1.33%   7.4    0s
H  111    45                    29975.000000 29653.5897  1.07%   7.4    0s

Cutting planes:
  Gomory: 4
  Cover: 4
  Implied bound: 4
  Clique: 2
  Flow cover: 16

Explored 421 nodes (2714 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.997500000000e+04, best bound 2.997442969084e+04, gap 0.0019%