Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:55:51 2013

Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros
Presolve removed 50 rows and 2450 columns
Presolve time: 3.68s
Presolved: 1650 rows, 125550 columns, 1251050 nonzeros
Variable types: 125050 continuous, 500 integer (500 binary)

Root relaxation: objective 1.715514e+05, 3103 iterations, 0.43 seconds

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

     0     0 171551.420    0   16          - 171551.420     -      -    5s
     0     0 171551.601    0   16          - 171551.601     -      -    6s
     0     0 171551.601    0   16          - 171551.601     -      -    7s
     0     0 171551.601    0   16          - 171551.601     -      -    9s
H    0     0                    171619.19391 171551.601  0.04%     -   10s
     0     1 171569.326    0    8 171619.194 171569.326  0.03%     -   11s
*    6     0               6    171584.76124 171584.761   0.0%  95.0   12s

Cutting planes:
  Flow cover: 3

Explored 7 nodes (4661 simplex iterations) in 12.84 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%