Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:12 2013

Optimize a model with 560 rows, 9300 columns and 48300 nonzeros
Presolve removed 20 rows and 1140 columns
Presolve time: 0.07s
Presolved: 540 rows, 8160 columns, 44300 nonzeros
Variable types: 8020 continuous, 140 integer (140 binary)

Root relaxation: objective 4.013975e+04, 396 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    8          - 40139.7487     -      -    0s
     0     0 40139.7487    0    8          - 40139.7487     -      -    0s
     0     0 40139.7487    0    8          - 40139.7487     -      -    0s
     0     0 40139.8591    0    8          - 40139.8591     -      -    0s
     0     0 40139.8591    0    8          - 40139.8591     -      -    0s
H    0     0                    40238.726267 40139.8591  0.25%     -    0s
     0     1 40147.7455    0    8 40238.7263 40147.7455  0.23%     -    0s
*   11     4              11    40198.004626 40192.6483  0.01%  17.4    0s
*   14     3              10    40196.455679 40192.6483  0.01%  13.8    0s

Cutting planes:
  Flow cover: 3

Explored 15 nodes (1055 simplex iterations) in 0.44 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019645567867e+04, best bound 4.019264832647e+04, gap 0.0095%