Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:12 2013

Optimize a model with 1200 rows, 28550 columns and 66550 nonzeros
Presolve removed 50 rows and 1250 columns
Presolve time: 0.10s
Presolved: 1150 rows, 27300 columns, 64550 nonzeros
Variable types: 27050 continuous, 250 integer (250 binary)

Root relaxation: objective 1.715514e+05, 2391 iterations, 0.09 seconds

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

     0     0 171551.420    0    6          - 171551.420     -      -    0s
     0     0 171553.825    0    3          - 171553.825     -      -    0s
     0     0 171553.825    0    3          - 171553.825     -      -    0s
H    0     0                    171605.45531 171553.825  0.03%     -    0s
     0     1 171569.326    0    3 171605.455 171569.326  0.02%     -    0s
*    3     0               3    171584.76124 171584.761   0.0%  88.7    0s

Cutting planes:
  Flow cover: 1

Explored 4 nodes (3113 simplex iterations) in 0.69 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%