Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:27 2013

Optimize a model with 2320 rows, 8060 columns and 22100 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.15s
Presolved: 2300 rows, 8040 columns, 20080 nonzeros
Variable types: 6040 continuous, 2000 integer (2000 binary)

Root relaxation: objective 3.709539e+04, 460 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    8          - 37095.3933     -      -    0s
     0     0 37130.5840    0    4          - 37130.5840     -      -    0s
     0     0 37134.6342    0    6          - 37134.6342     -      -    0s
     0     0 37136.6306    0    4          - 37136.6306     -      -    0s
     0     0 37136.6984    0    4          - 37136.6984     -      -    0s
     0     0 37139.8967    0    4          - 37139.8967     -      -    0s
     0     0 37140.6171    0    5          - 37140.6171     -      -    0s
     0     0 37141.3872    0    5          - 37141.3872     -      -    0s
     0     0 37142.5155    0    4          - 37142.5155     -      -    0s
     0     0 37142.9151    0    8          - 37142.9151     -      -    0s
     0     0 37143.7731    0    8          - 37143.7731     -      -    0s
     0     0 37143.8605    0    8          - 37143.8605     -      -    0s
     0     0 37143.8605    0    8          - 37143.8605     -      -    0s
H    0     0                    37380.639970 37143.8605  0.63%     -    0s
     0     2 37143.8963    0    6 37380.6400 37143.8963  0.63%     -    0s
*   26     5              18    37253.494208 37252.7045  0.00%  11.8    0s

Cutting planes:
  Gomory: 1
  Implied bound: 26
  Flow cover: 4

Explored 27 nodes (1094 simplex iterations) in 0.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.725349420845e+04, best bound 3.725270454517e+04, gap 0.0021%