Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:39 2013

Optimize a model with 680 rows, 5240 columns and 11220 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.03s
Presolved: 640 rows, 5180 columns, 10360 nonzeros
Variable types: 4800 continuous, 380 integer (380 binary)

Root relaxation: objective 4.013975e+04, 418 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    2          - 40139.7487     -      -    0s
     0     0 40142.0006    0    3          - 40142.0006     -      -    0s
     0     0 40142.6316    0    3          - 40142.6316     -      -    0s
H    0     0                    40196.197990 40142.6316  0.13%     -    0s
H    0     0                    40195.297155 40142.6316  0.13%     -    0s
     0     0 40143.0081    0    3 40195.2972 40143.0081  0.13%     -    0s
     0     0 40143.0081    0    3 40195.2972 40143.0081  0.13%     -    0s
     0     2 40143.3538    0    3 40195.2972 40143.3538  0.13%     -    0s

Cutting planes:
  Gomory: 2
  Flow cover: 6

Explored 15 nodes (589 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019529715470e+04, best bound 4.019129480785e+04, gap 0.0100%