Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:32:26 2013

Optimize a model with 5140 rows, 16020 columns and 42010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.25s
Presolved: 5120 rows, 15990 columns, 31980 nonzeros
Variable types: 11000 continuous, 4990 integer (4990 binary)

Root relaxation: objective 2.387367e+04, 245 iterations, 0.01 seconds

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

     0     0 23873.6700    0    1          - 23873.6700     -      -    0s
     0     0 23873.9686    0    2          - 23873.9686     -      -    0s
     0     0 23873.9780    0    2          - 23873.9780     -      -    0s
     0     0 23873.9780    0    2          - 23873.9780     -      -    0s
     0     2 23874.1178    0    2          - 23874.1178     -      -    1s
   443    68 24129.1354  443    4          - 23950.7298     -    1.4    5s
*  994   529             990    24524.487222 23950.7298  2.34%   2.0    9s
*  996     0              52    23950.729782 23950.7298   0.0%   2.0    9s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 997 nodes (3253 simplex iterations) in 9.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.395072978172e+04, best bound 2.395072978172e+04, gap 0.0%