Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:17:33 2013

Optimize a model with 4320 rows, 12060 columns and 36100 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.16s
Presolved: 4300 rows, 12040 columns, 32080 nonzeros
Variable types: 8040 continuous, 4000 integer (4000 binary)

Root relaxation: objective 3.600389e+04, 564 iterations, 0.01 seconds

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

     0     0 36003.8892    0    4          - 36003.8892     -      -    0s
     0     0 36102.6854    0    4          - 36102.6854     -      -    0s
     0     0 36111.6170    0    4          - 36111.6170     -      -    0s
     0     0 36114.4182    0    4          - 36114.4182     -      -    0s
     0     0 36115.2461    0    4          - 36115.2461     -      -    0s
     0     0 36115.3836    0    4          - 36115.3836     -      -    0s
     0     0 36116.5017    0    4          - 36116.5017     -      -    0s
     0     0 36117.4954    0    4          - 36117.4954     -      -    0s
     0     0 36120.8222    0    5          - 36120.8222     -      -    0s
     0     0 36120.9937    0    4          - 36120.9937     -      -    0s
     0     0 36121.2023    0    7          - 36121.2023     -      -    0s
     0     0 36121.6868    0    7          - 36121.6868     -      -    0s
     0     0 36121.6868    0    7          - 36121.6868     -      -    0s
     0     2 36121.6868    0    7          - 36121.6868     -      -    1s
*   17     5               9    36202.402400 36202.3896  0.00%  37.5    1s

Cutting planes:
  Gomory: 4
  Implied bound: 32
  Flow cover: 2

Explored 18 nodes (1657 simplex iterations) in 1.73 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.620240239969e+04, best bound 3.620238959282e+04, gap 0.0000%