Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:39:30 2013

Optimize a model with 340 rows, 21600 columns and 262210 nonzeros
Presolve removed 10 rows and 490 columns
Presolve time: 1.05s
Presolved: 330 rows, 21110 columns, 242210 nonzeros
Variable types: 21010 continuous, 100 integer (100 binary)

Root relaxation: objective 1.997658e+04, 171 iterations, 0.04 seconds

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

     0     0 19976.5790    0   16          - 19976.5790     -      -    1s
     0     0 19976.6957    0   16          - 19976.6957     -      -    1s
     0     0 20149.8255    0   14          - 20149.8255     -      -    1s
     0     0 20149.8255    0   14          - 20149.8255     -      -    1s
     0     2 20149.8285    0   14          - 20149.8285     -      -    4s
*   25    16              24    20235.187287 20149.8285  0.42%   9.4    4s
*   41    15              13    20162.132595 20149.9494  0.06%   6.6    4s
*   77    18              27    20161.798886 20149.9735  0.06%   4.9    4s
H   81    19                    20160.270373 20149.9931  0.05%   4.7    5s
*  172    32              16    20158.677414 20150.9307  0.04%   3.3    5s

Cutting planes:
  Flow cover: 2

Explored 185 nodes (1237 simplex iterations) in 5.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015867741363e+04, best bound 2.015685171014e+04, gap 0.0091%