Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:47 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 4.642213e+04, 551 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    6          - 46422.1265     -      -    0s
H    0     0                    47377.636012 46422.1265  2.02%     -    0s
     0     0 46479.0869    0    6 47377.6360 46479.0869  1.90%     -    0s
     0     0 46481.6195    0    6 47377.6360 46481.6195  1.89%     -    0s
     0     0 46482.3205    0    6 47377.6360 46482.3205  1.89%     -    0s
     0     0 46482.5256    0    4 47377.6360 46482.5256  1.89%     -    0s
     0     0 46482.5256    0    4 47377.6360 46482.5256  1.89%     -    0s
     0     0 46482.5256    0    4 47377.6360 46482.5256  1.89%     -    0s
     0     0 46482.5256    0    4 47377.6360 46482.5256  1.89%     -    0s
     0     2 46482.5256    0    4 47377.6360 46482.5256  1.89%     -    0s
*   17     6               9    46743.553085 46743.5531   0.0%  30.5    0s

Cutting planes:
  Gomory: 3
  Implied bound: 16
  Flow cover: 8

Explored 18 nodes (1383 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674355308496e+04, best bound 4.674355308496e+04, gap 0.0%