Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:46:57 2013

Optimize a model with 1000 rows, 25550 columns and 51900 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.09s
Presolved: 950 rows, 25500 columns, 51600 nonzeros
Variable types: 25350 continuous, 150 integer (150 binary)

Root relaxation: objective 2.208160e+05, 1885 iterations, 0.06 seconds

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

     0     0 220815.985    0    8          - 220815.985     -      -    0s
H    0     0                    243352.68555 220815.985  9.26%     -    0s
H    0     0                    228505.19903 220815.985  3.37%     -    0s
     0     0 220899.042    0    4 228505.199 220899.042  3.33%     -    0s
     0     0 220938.323    0    4 228505.199 220938.323  3.31%     -    0s
     0     0 220946.180    0    4 228505.199 220946.180  3.31%     -    0s
     0     0 220946.180    0    4 228505.199 220946.180  3.31%     -    0s
     0     0 220948.827    0    4 228505.199 220948.827  3.31%     -    0s
     0     0 220956.888    0    6 228505.199 220956.888  3.30%     -    0s
     0     0 220957.615    0    6 228505.199 220957.615  3.30%     -    0s
     0     0 220957.831    0    6 228505.199 220957.831  3.30%     -    0s
     0     0 220958.221    0    6 228505.199 220958.221  3.30%     -    0s
     0     0 220958.407    0    6 228505.199 220958.407  3.30%     -    0s
     0     0 220958.407    0    6 228505.199 220958.407  3.30%     -    1s
     0     2 220964.286    0    6 228505.199 220964.286  3.30%     -    1s
*   15     8              15    221466.25414 221171.835  0.13%  36.0    1s

Cutting planes:
  Flow cover: 14

Explored 25 nodes (3688 simplex iterations) in 2.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.214662541417e+05, best bound 2.214592107076e+05, gap 0.0032%