Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:48 2013

Optimize a model with 720 rows, 4860 columns and 10900 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.03s
Presolved: 700 rows, 4840 columns, 10480 nonzeros
Variable types: 4440 continuous, 400 integer (400 binary)

Root relaxation: objective 3.573401e+04, 455 iterations, 0.01 seconds

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

     0     0 35734.0139    0    6          - 35734.0139     -      -    0s
     0     0 35821.5821    0   10          - 35821.5821     -      -    0s
     0     0 35857.8278    0   10          - 35857.8278     -      -    0s
     0     0 35857.9272    0    8          - 35857.9272     -      -    0s
     0     0 35857.9272    0    8          - 35857.9272     -      -    0s
     0     0 35857.9272    0    8          - 35857.9272     -      -    0s
H    0     0                    37311.948753 35857.9272  3.90%     -    0s
H    0     0                    36208.602569 35857.9272  0.97%     -    0s
     0     2 35870.4083    0    6 36208.6026 35870.4083  0.93%     -    0s
H   27     2                    36173.352826 36105.3559  0.19%  15.0    0s

Cutting planes:
  Gomory: 2
  Implied bound: 30
  Flow cover: 6

Explored 31 nodes (1146 simplex iterations) in 0.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.617335282586e+04, best bound 3.617335282586e+04, gap 0.0%