Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:36 2013

Optimize a model with 1140 rows, 2020 columns and 6010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.04s
Presolved: 1110 rows, 2000 columns, 4980 nonzeros
Variable types: 1510 continuous, 490 integer (490 binary)

Root relaxation: objective 2.337984e+04, 501 iterations, 0.01 seconds

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

     0     0 23379.8401    0    1          - 23379.8401     -      -    0s
     0     0 23518.4454    0    4          - 23518.4454     -      -    0s
     0     0 23525.6439    0    3          - 23525.6439     -      -    0s
     0     0 23525.6439    0    3          - 23525.6439     -      -    0s
     0     0 23525.8197    0    3          - 23525.8197     -      -    0s
H    0     0                    23527.300521 23525.8197  0.01%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 6

Explored 0 nodes (581 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.352730052140e+04, best bound 2.352581967862e+04, gap 0.0063%