Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:57:26 2013

Optimize a model with 1700 rows, 28100 columns and 58050 nonzeros
Presolve removed 100 rows and 150 columns
Presolve time: 0.68s
Presolved: 1600 rows, 27950 columns, 55900 nonzeros
Variable types: 27000 continuous, 950 integer (950 binary)

Root relaxation: objective 1.626233e+05, 2164 iterations, 0.09 seconds

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

     0     0 162623.326    0    5          - 162623.326     -      -    0s
     0     0 162693.703    0    5          - 162693.703     -      -    0s
     0     0 162708.478    0    5          - 162708.478     -      -    1s
     0     0 162717.522    0    4          - 162717.522     -      -    1s
     0     0 162720.741    0    4          - 162720.741     -      -    1s
     0     0 162720.752    0    4          - 162720.752     -      -    1s
     0     0 162720.752    0    4          - 162720.752     -      -    1s
     0     0 162720.911    0    5          - 162720.911     -      -    1s
     0     0 162720.911    0    5          - 162720.911     -      -    1s
H    0     0                    163803.75589 162720.911  0.66%     -    2s
     0     2 162721.975    0    5 163803.756 162721.975  0.66%     -    2s
H   27    18                    163201.71383 162825.246  0.23%  13.1    2s
H  135    26                    162970.57160 162825.246  0.09%   4.1    3s
   251    27 162962.932  249    1 162970.572 162825.246  0.09%   3.2    5s
*  510    22              19    162917.68851 162863.843  0.03%   3.8    6s

Cutting planes:
  Flow cover: 30

Explored 676 nodes (5584 simplex iterations) in 7.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.629176885125e+05, best bound 1.629032434221e+05, gap 0.0089%