Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:45 2013

Optimize a model with 480 rows, 5420 columns and 14620 nonzeros
Presolve removed 20 rows and 500 columns
Presolve time: 0.01s
Presolved: 460 rows, 4920 columns, 13820 nonzeros
Variable types: 4820 continuous, 100 integer (100 binary)

Root relaxation: objective 3.709539e+04, 457 iterations, 0.01 seconds

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

     0     0 37095.3933    0   12          - 37095.3933     -      -    0s
     0     0 37101.9398    0    9          - 37101.9398     -      -    0s
     0     0 37101.9398    0    9          - 37101.9398     -      -    0s
     0     0 37103.0944    0   12          - 37103.0944     -      -    0s
     0     0 37103.9327    0    9          - 37103.9327     -      -    0s
     0     0 37103.9327    0    9          - 37103.9327     -      -    0s
     0     0 37103.9327    0    9          - 37103.9327     -      -    0s
     0     0 37103.9327    0    9          - 37103.9327     -      -    0s
     0     0 37103.9327    0    9          - 37103.9327     -      -    0s
H    0     0                    37274.154728 37103.9327  0.46%     -    0s
     0     2 37111.1521    0    3 37274.1547 37111.1521  0.44%     -    0s
*    8     4               7    37253.378676 37252.3002  0.00%  22.1    0s

Cutting planes:
  Flow cover: 9

Explored 9 nodes (1160 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.725337867584e+04, best bound 3.725230018602e+04, gap 0.0029%