Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:52 2013

Optimize a model with 900 rows, 25350 columns and 50950 nonzeros
Presolve removed 150 rows and 100 columns
Presolve time: 0.14s
Presolved: 750 rows, 25250 columns, 50550 nonzeros
Variable types: 25200 continuous, 50 integer (50 binary)

Root relaxation: objective 2.198499e+05, 1789 iterations, 0.07 seconds

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

     0     0 219849.939    0    2          - 219849.939     -      -    0s
H    0     0                    224116.92822 219849.939  1.90%     -    0s
     0     0 219871.638    0    2 224116.928 219871.638  1.89%     -    0s
     0     0 219882.768    0    2 224116.928 219882.768  1.89%     -    0s
     0     0 219884.727    0    2 224116.928 219884.727  1.89%     -    0s
     0     0 219889.573    0    2 224116.928 219889.573  1.89%     -    0s
     0     0 219893.947    0    2 224116.928 219893.947  1.88%     -    0s
     0     0 219898.500    0    2 224116.928 219898.500  1.88%     -    0s
     0     0 219898.500    0    2 224116.928 219898.500  1.88%     -    0s
     0     0 219898.500    0    2 224116.928 219898.500  1.88%     -    0s
     0     2 219909.558    0    2 224116.928 219909.558  1.88%     -    0s
*    8     7               7    220916.27003 220306.336  0.28%  76.9    1s

Cutting planes:
  Flow cover: 7

Explored 14 nodes (2993 simplex iterations) in 1.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.209162700342e+05, best bound 2.209162700342e+05, gap 0.0%