Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:46 2013

Optimize a model with 900 rows, 25350 columns and 50950 nonzeros
Presolve removed 150 rows and 100 columns
Presolve time: 0.22s
Presolved: 750 rows, 25250 columns, 50550 nonzeros
Variable types: 25200 continuous, 50 integer (50 binary)

Root relaxation: objective 1.715514e+05, 2010 iterations, 0.15 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     -      -    0s
H    0     0                    175540.05747 171551.420  2.27%     -    0s
     0     0 171553.825    0    1 175540.057 171553.825  2.27%     -    0s
     0     0 171553.825    0    1 175540.057 171553.825  2.27%     -    0s
     0     2 171554.274    0    1 175540.057 171554.274  2.27%     -    0s
*    8     3               8    171584.76124 171584.761   0.0%  11.0    0s

Cutting planes:
  Flow cover: 1

Explored 9 nodes (2245 simplex iterations) in 0.81 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%