Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:32:24 2013

Optimize a model with 10800 rows, 45150 columns and 120250 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.28s
Presolved: 10750 rows, 45100 columns, 110200 nonzeros
Variable types: 35100 continuous, 10000 integer (10000 binary)

Root relaxation: objective 1.715514e+05, 4234 iterations, 0.18 seconds

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

     0     0 171551.420    0    4          - 171551.420     -      -    0s
     0     0 171560.503    0    2          - 171560.503     -      -    0s
     0     0 171560.503    0    2          - 171560.503     -      -    1s
H    0     0                    171610.01199 171560.503  0.03%     -    1s
     0     1 171564.310    0    2 171610.012 171564.310  0.03%     -    1s
*   54     0              54    171584.76124 171584.761   0.0%   8.0    2s

Cutting planes:
  Gomory: 1
  Implied bound: 12

Explored 55 nodes (5443 simplex iterations) in 2.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%