Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:52 2013

Optimize a model with 480 rows, 4560 columns and 11180 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 460 rows, 4540 columns, 10760 nonzeros
Variable types: 4440 continuous, 100 integer (100 binary)

Root relaxation: objective 4.642213e+04, 606 iterations, 0.01 seconds

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

     0     0 46422.1265    0    9          - 46422.1265     -      -    0s
     0     0 46431.0290    0    8          - 46431.0290     -      -    0s
     0     0 46431.1862    0   11          - 46431.1862     -      -    0s
     0     0 46432.5330    0    8          - 46432.5330     -      -    0s
     0     0 46432.5330    0    8          - 46432.5330     -      -    0s
     0     0 46432.5330    0    8          - 46432.5330     -      -    0s
     0     0 46432.5330    0    8          - 46432.5330     -      -    0s
H    0     0                    47377.636012 46432.5330  1.99%     -    0s
     0     2 46436.6000    0    8 47377.6360 46436.6000  1.99%     -    0s
*   10     3               8    46743.553085 46739.7279  0.01%  28.5    0s

Cutting planes:
  Gomory: 3
  Flow cover: 6

Explored 11 nodes (1255 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674355308496e+04, best bound 4.673972786769e+04, gap 0.0082%