Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:58 2013

Optimize a model with 280 rows, 3650 columns and 22150 nonzeros
Presolve removed 10 rows and 570 columns
Presolve time: 0.03s
Presolved: 270 rows, 3080 columns, 20150 nonzeros
Variable types: 3010 continuous, 70 integer (70 binary)

Root relaxation: objective 1.791602e+04, 167 iterations, 0.00 seconds

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

     0     0 17916.0191    0   12          - 17916.0191     -      -    0s
     0     0 17917.0911    0   12          - 17917.0911     -      -    0s
     0     0 17917.3357    0   12          - 17917.3357     -      -    0s
     0     0 17917.7008    0   12          - 17917.7008     -      -    0s
     0     0 17917.7008    0   12          - 17917.7008     -      -    0s
     0     0 17917.7008    0   12          - 17917.7008     -      -    0s
H    0     0                    18008.872099 17917.7008  0.51%     -    0s
     0     2 17920.4637    0    8 18008.8721 17920.4637  0.49%     -    0s
*   11    10              11    17984.564597 17969.5578  0.08%   8.9    0s
*   42     5              11    17984.221875 17982.3106  0.01%   3.5    0s

Cutting planes:
  Flow cover: 4

Explored 47 nodes (479 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798422187500e+04, best bound 1.798243804464e+04, gap 0.0099%