Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:28 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 4.013975e+04, 411 iterations, 0.01 seconds

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

     0     0 40139.7487    0    4          - 40139.7487     -      -    0s
H    0     0                    40238.726267 40139.7487  0.25%     -    0s
     0     0 40146.3204    0    4 40238.7263 40146.3204  0.23%     -    0s
     0     0 40148.5841    0    2 40238.7263 40148.5841  0.22%     -    0s
     0     0 40149.5071    0    7 40238.7263 40149.5071  0.22%     -    0s
     0     0 40151.9863    0    6 40238.7263 40151.9863  0.22%     -    0s
     0     0 40153.3034    0    6 40238.7263 40153.3034  0.21%     -    0s
     0     0 40153.7042    0    4 40238.7263 40153.7042  0.21%     -    0s
     0     0 40154.1261    0    8 40238.7263 40154.1261  0.21%     -    0s
     0     0 40155.3401    0    6 40238.7263 40155.3401  0.21%     -    0s
     0     0 40155.5088    0    6 40238.7263 40155.5088  0.21%     -    0s
     0     0 40156.2369    0    7 40238.7263 40156.2369  0.20%     -    0s
     0     0 40156.3142    0    4 40238.7263 40156.3142  0.20%     -    0s
     0     0 40156.3521    0   12 40238.7263 40156.3521  0.20%     -    0s
     0     0 40156.4360    0    4 40238.7263 40156.4360  0.20%     -    0s
     0     0 40156.4680    0    7 40238.7263 40156.4680  0.20%     -    0s
     0     0 40156.5039    0    8 40238.7263 40156.5039  0.20%     -    0s
     0     0 40156.6779    0    4 40238.7263 40156.6779  0.20%     -    0s
     0     0 40156.7307    0    4 40238.7263 40156.7307  0.20%     -    0s
     0     0 40156.8471    0    4 40238.7263 40156.8471  0.20%     -    0s
     0     0 40157.1089    0    4 40238.7263 40157.1089  0.20%     -    0s
     0     0 40157.1947    0    4 40238.7263 40157.1947  0.20%     -    0s
     0     0 40157.2948    0    4 40238.7263 40157.2948  0.20%     -    0s
     0     0 40157.5668    0    4 40238.7263 40157.5668  0.20%     -    0s
     0     0 40157.5828    0    2 40238.7263 40157.5828  0.20%     -    1s
     0     0 40157.5828    0    2 40238.7263 40157.5828  0.20%     -    1s
     0     2 40157.5828    0    2 40238.7263 40157.5828  0.20%     -    1s
H  108     2                    40195.331968 40194.2806  0.00%   4.6    1s

Cutting planes:
  Gomory: 2
  Implied bound: 40
  Flow cover: 3

Explored 108 nodes (1739 simplex iterations) in 1.82 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019533196834e+04, best bound 4.019428056299e+04, gap 0.0026%