Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:57 2013

Optimize a model with 1800 rows, 27150 columns and 57250 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.21s
Presolved: 1750 rows, 27100 columns, 56200 nonzeros
Variable types: 26100 continuous, 1000 integer (1000 binary)

Root relaxation: objective 1.650739e+05, 2733 iterations, 0.10 seconds

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

     0     0 165073.856    0    4          - 165073.856     -      -    0s
H    0     0                    171394.32716 165073.856  3.69%     -    0s
     0     0 165149.723    0    4 171394.327 165149.723  3.64%     -    0s
     0     0 165157.376    0    4 171394.327 165157.376  3.64%     -    0s
     0     0 165157.376    0    4 171394.327 165157.376  3.64%     -    0s
     0     0 165158.182    0    4 171394.327 165158.182  3.64%     -    0s
     0     0 165158.282    0    4 171394.327 165158.282  3.64%     -    0s
     0     0 165160.571    0    4 171394.327 165160.571  3.64%     -    1s
     0     0 165160.592    0    4 171394.327 165160.592  3.64%     -    1s
     0     0 165160.592    0    4 171394.327 165160.592  3.64%     -    1s
     0     2 165160.592    0    4 171394.327 165160.592  3.64%     -    1s
*   27     7              14    165621.28759 165607.513  0.01%   115    2s

Cutting planes:
  Implied bound: 8
  Flow cover: 9

Explored 28 nodes (6806 simplex iterations) in 2.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.656212875856e+05, best bound 1.656075126568e+05, gap 0.0083%