Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:56 2013

Optimize a model with 480 rows, 4560 columns and 11180 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 460 rows, 4540 columns, 10760 nonzeros
Variable types: 4440 continuous, 100 integer (100 binary)

Root relaxation: objective 4.013975e+04, 483 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    6          - 40139.7487     -      -    0s
     0     0 40139.7487    0    8          - 40139.7487     -      -    0s
     0     0 40139.7487    0    8          - 40139.7487     -      -    0s
     0     0 40139.7487    0    8          - 40139.7487     -      -    0s
H    0     0                    40195.297155 40139.7487  0.14%     -    0s
     0     1 40147.7455    0    6 40195.2972 40147.7455  0.12%     -    0s

Cutting planes:
  Gomory: 2
  Flow cover: 2

Explored 3 nodes (889 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019529715470e+04, best bound 4.019449954342e+04, gap 0.0020%