Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:55:59 2013

Optimize a model with 1600 rows, 76750 columns and 650950 nonzeros
Presolve removed 50 rows and 1250 columns
Presolve time: 1.08s
Presolved: 1550 rows, 75500 columns, 600950 nonzeros
Variable types: 75050 continuous, 450 integer (450 binary)

Root relaxation: objective 1.650739e+05, 2551 iterations, 0.16 seconds

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

     0     0 165073.856    0   14          - 165073.856     -      -    1s
     0     0 165076.451    0   14          - 165076.451     -      -    2s
     0     0 165077.336    0   21          - 165077.336     -      -    2s
     0     0 165077.345    0   21          - 165077.345     -      -    2s
     0     0 165077.500    0   14          - 165077.500     -      -    3s
     0     0 165077.500    0   14          - 165077.500     -      -    3s
     0     0 165077.501    0   14          - 165077.501     -      -    3s
     0     0 165077.501    0   14          - 165077.501     -      -    4s
     0     2 165077.503    0   14          - 165077.503     -      -   10s
*  110    59             103    165684.94612 165104.089  0.35%   7.5   14s
*  140    32              28    165627.43164 165384.255  0.15%   7.5   14s
*  145    31              30    165626.56774 165384.255  0.15%   7.3   14s
*  147    30              31    165626.38404 165384.255  0.15%   7.2   14s
   148    29     cutoff   31      165626.384 165384.255  0.15%   7.1   15s
*  178    33              25    165625.21616 165478.070  0.09%   7.0   15s

Cutting planes:
  Flow cover: 8

Explored 356 nodes (6569 simplex iterations) in 18.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.656252161583e+05, best bound 1.656158604075e+05, gap 0.0056%