Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:10:31 2013

Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros
Presolve removed 50 rows and 2850 columns
Presolve time: 0.21s
Presolved: 1350 rows, 35400 columns, 140750 nonzeros
Variable types: 35050 continuous, 350 integer (350 binary)

Root relaxation: objective 2.252562e+05, 2828 iterations, 0.10 seconds

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

     0     0 225256.157    0    4          - 225256.157     -      -    0s
     0     0 225278.472    0    8          - 225278.472     -      -    0s
     0     0 225278.587    0    8          - 225278.587     -      -    0s
     0     0 225278.587    0    8          - 225278.587     -      -    0s
     0     2 225302.824    0    8          - 225302.824     -      -    2s
*   71    45              63    226786.82267 225503.706  0.57%  19.5    4s
H  101    27                    226169.63582 225503.706  0.29%  20.8    4s
   112    33 225991.640   38    4 226169.636 225503.706  0.29%  19.6    5s
*  142     4              11    225915.15199 225798.865  0.05%  21.1    6s

Cutting planes:
  Flow cover: 3

Explored 148 nodes (6782 simplex iterations) in 6.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.259151519913e+05, best bound 2.259073696243e+05, gap 0.0034%