Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:49 2013

Optimize a model with 1320 rows, 6060 columns and 15100 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.08s
Presolved: 1300 rows, 6040 columns, 14080 nonzeros
Variable types: 5040 continuous, 1000 integer (1000 binary)

Root relaxation: objective 4.370285e+04, 601 iterations, 0.01 seconds

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

     0     0 43702.8549    0    4          - 43702.8549     -      -    0s
     0     0 43725.3835    0    2          - 43725.3835     -      -    0s
     0     0 43725.3835    0    2          - 43725.3835     -      -    0s
     0     0 43725.3835    0    2          - 43725.3835     -      -    0s
     0     0 43725.3835    0    2          - 43725.3835     -      -    0s
     0     2 43725.3835    0    2          - 43725.3835     -      -    0s
*   18    14               9    44042.610706 43852.1529  0.43%  22.8    0s
*   48     7              12    43900.849511 43896.9453  0.01%  12.7    0s

Cutting planes:
  Gomory: 3
  Implied bound: 21
  Flow cover: 1

Explored 49 nodes (1548 simplex iterations) in 0.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.390084951135e+04, best bound 4.389694531587e+04, gap 0.0089%