Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:49:59 2013

Optimize a model with 560 rows, 9300 columns and 48300 nonzeros
Presolve removed 20 rows and 1140 columns
Presolve time: 0.15s
Presolved: 540 rows, 8160 columns, 44300 nonzeros
Variable types: 8020 continuous, 140 integer (140 binary)

Root relaxation: objective 4.642213e+04, 636 iterations, 0.03 seconds

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

     0     0 46422.1265    0   12          - 46422.1265     -      -    0s
     0     0 46424.1792    0    8          - 46424.1792     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     0 46424.4006    0   12          - 46424.4006     -      -    0s
     0     2 46426.2249    0   12          - 46426.2249     -      -    1s
*   61    50              54    46907.855795 46436.7695  1.00%   8.7    1s
*   87    34              25    46830.847523 46454.9662  0.80%   9.0    1s
*  121    27              11    46743.805835 46514.2818  0.49%   8.9    1s

Cutting planes:
  Flow cover: 7

Explored 164 nodes (2829 simplex iterations) in 1.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674380583461e+04, best bound 4.674163581158e+04, gap 0.0046%