Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:18 2013

Optimize a model with 2320 rows, 8060 columns and 22100 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.15s
Presolved: 2300 rows, 8040 columns, 20080 nonzeros
Variable types: 6040 continuous, 2000 integer (2000 binary)

Root relaxation: objective 4.642213e+04, 587 iterations, 0.02 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
     0     0 46477.2053    0    8          - 46477.2053     -      -    0s
     0     0 46488.1418    0    7          - 46488.1418     -      -    0s
     0     0 46493.8965    0    8          - 46493.8965     -      -    0s
     0     0 46495.0325    0    5          - 46495.0325     -      -    0s
     0     0 46495.2450    0    4          - 46495.2450     -      -    0s
     0     0 46495.3424    0    6          - 46495.3424     -      -    0s
     0     0 46495.7606    0    6          - 46495.7606     -      -    0s
     0     0 46495.8222    0    6          - 46495.8222     -      -    0s
     0     0 46495.8364    0    6          - 46495.8364     -      -    0s
     0     0 46495.8364    0    6          - 46495.8364     -      -    0s
     0     2 46495.8364    0    6          - 46495.8364     -      -    0s
*   19     5              10    46743.805835 46743.7741  0.00%  28.8    1s

Cutting planes:
  Gomory: 2
  Implied bound: 43
  Flow cover: 4

Explored 20 nodes (1555 simplex iterations) in 1.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674380583461e+04, best bound 4.674377407618e+04, gap 0.0001%