Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:54:59 2013

Optimize a model with 10700 rows, 35100 columns and 90050 nonzeros
Presolve removed 150 rows and 100 columns
Presolve time: 0.57s
Presolved: 10550 rows, 35000 columns, 79900 nonzeros
Variable types: 30050 continuous, 4950 integer (4950 binary)

Root relaxation: objective 1.715514e+05, 10446 iterations, 0.78 seconds

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

     0     0 171551.420    0    2          - 171551.420     -      -    1s
     0     0 171553.825    0    1          - 171553.825     -      -    1s
H    0     0                    171616.66427 171553.825  0.04%     -    1s
H    0     0                    171605.66201 171553.825  0.03%     -    2s
     0     0 171553.825    0    2 171605.662 171553.825  0.03%     -    2s
     0     0 171553.825    0    1 171605.662 171553.825  0.03%     -    2s
     0     2 171564.828    0    1 171605.662 171564.828  0.02%     -    3s
*    5     3               5    171584.76124 171584.761   0.0%   4.8    3s

Cutting planes:
  Flow cover: 1

Explored 6 nodes (11961 simplex iterations) in 3.21 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%