Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:42 2013

Optimize a model with 64 rows, 1064 columns and 11142 nonzeros
Presolve removed 22 rows and 24 columns
Presolve time: 0.03s
Presolved: 42 rows, 1040 columns, 10096 nonzeros
Variable types: 1022 continuous, 18 integer (18 binary)

Root relaxation: objective 4.810927e+03, 16 iterations, 0.00 seconds

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

     0     0 4810.92679    0    6          - 4810.92679     -      -    0s
     0     0 4812.47921    0    7          - 4812.47921     -      -    0s
     0     0 4812.60857    0    6          - 4812.60857     -      -    0s
     0     0 4827.91034    0    6          - 4827.91034     -      -    0s
     0     0 4829.93987    0    6          - 4829.93987     -      -    0s
     0     0 4830.45732    0    6          - 4830.45732     -      -    0s
     0     0 4830.45732    0    6          - 4830.45732     -      -    0s
     0     0 4830.45732    0    6          - 4830.45732     -      -    0s
     0     0 4830.46986    0    8          - 4830.46986     -      -    0s
     0     0 4830.47107    0    8          - 4830.47107     -      -    0s
     0     0 4830.72957    0    7          - 4830.72957     -      -    0s
     0     0 4830.72957    0    7          - 4830.72957     -      -    0s
     0     2 4830.73384    0    7          - 4830.73384     -      -    0s
*   25    10              12    4831.1210937 4830.78125  0.01%   3.4    0s

Cutting planes:
  Gomory: 1
  Implied bound: 1
  Flow cover: 2

Explored 26 nodes (219 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.831121093651e+03, best bound 4.830781248772e+03, gap 0.0070%