Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:19:52 2013

Optimize a model with 30855 rows, 30305 columns and 121055 nonzeros
Presolve removed 550 rows and 0 columns
Presolve time: 0.17s
Presolved: 30305 rows, 30305 columns, 119955 nonzeros
Variable types: 30250 continuous, 55 integer (55 binary)

Root relaxation: objective 5.326996e+04, 4790 iterations, 0.61 seconds

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

     0     0 53269.9635    0    2          - 53269.9635     -      -    0s
H    0     0                    53654.000000 53269.9635  0.72%     -    0s
H    0     0                    53567.000000 53269.9635  0.55%     -    1s
     0     0 53272.2704    0    3 53567.0000 53272.2704  0.55%     -    1s
     0     0 53272.2704    0    3 53567.0000 53272.2704  0.55%     -    1s
     0     2 53283.3498    0    3 53567.0000 53283.3498  0.53%     -    2s
*    6     5               6    53533.000000 53495.6154  0.07%  88.2    2s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 12 nodes (5756 simplex iterations) in 2.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.353300000000e+04, best bound 5.353300000000e+04, gap 0.0%