Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:17:55 2013

Optimize a model with 600 rows, 8220 columns and 48560 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.06s
Presolved: 580 rows, 8200 columns, 44540 nonzeros
Variable types: 8040 continuous, 160 integer (160 binary)

Root relaxation: objective 3.600389e+04, 487 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    6          - 36003.8892     -      -    0s
     0     0 36005.9884    0    6          - 36005.9884     -      -    0s
     0     0 36006.5348    0    7          - 36006.5348     -      -    0s
     0     0 36007.3117    0    9          - 36007.3117     -      -    0s
     0     0 36007.3269    0    9          - 36007.3269     -      -    0s
     0     0 36007.3621    0    9          - 36007.3621     -      -    0s
     0     0 36007.3621    0    9          - 36007.3621     -      -    0s
     0     2 36009.4483    0    9          - 36009.4483     -      -    0s
*   54    41              52    36418.607546 36060.4404  0.98%   5.3    0s
*   67     7              12    36205.395321 36173.6403  0.09%   5.7    0s

Cutting planes:
  Flow cover: 7

Explored 73 nodes (1138 simplex iterations) in 0.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.620539532118e+04, best bound 3.620238158816e+04, gap 0.0083%