Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:10 2013

Optimize a model with 150 rows, 2860 columns and 22585 nonzeros
Presolve removed 5 rows and 565 columns
Presolve time: 0.04s
Presolved: 145 rows, 2295 columns, 20585 nonzeros
Variable types: 2255 continuous, 40 integer (40 binary)

Root relaxation: objective 1.204447e+04, 55 iterations, 0.00 seconds

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

     0     0 12044.4669    0    5          - 12044.4669     -      -    0s
     0     0 12044.7115    0    5          - 12044.7115     -      -    0s
     0     0 12093.0698    0    4          - 12093.0698     -      -    0s
     0     0 12093.0698    0    4          - 12093.0698     -      -    0s
H    0     0                    12271.881522 12093.0698  1.46%     -    0s
     0     0 12093.0698    0    4 12271.8815 12093.0698  1.46%     -    0s
     0     0 12093.1080    0    4 12271.8815 12093.1080  1.46%     -    0s
     0     0 12093.1080    0    4 12271.8815 12093.1080  1.46%     -    0s
     0     2 12094.7873    0    4 12271.8815 12094.7873  1.44%     -    0s
*   10     4               9    12141.486508 12097.5415  0.36%   8.6    0s
*   14     6              12    12136.042708 12097.5415  0.32%   6.8    0s
*   15     5              12    12134.785468 12097.5415  0.31%   6.4    0s
*   22     4               6    12097.775593 12097.6273  0.00%   4.6    0s

Cutting planes:
  Flow cover: 1

Explored 23 nodes (442 simplex iterations) in 0.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.209777559273e+04, best bound 1.209762728358e+04, gap 0.0012%