Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:06 2013

Optimize a model with 15639 rows, 15249 columns and 60879 nonzeros
Presolve removed 928 rows and 0 columns
Presolve time: 0.09s
Presolved: 14711 rows, 15249 columns, 59023 nonzeros
Variable types: 15210 continuous, 39 integer (39 binary)

Root relaxation: objective 3.952487e+04, 2268 iterations, 0.17 seconds

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

     0     0 39524.8727    0    3          - 39524.8727     -      -    0s
H    0     0                    40148.000000 39524.8727  1.55%     -    0s
H    0     0                    39546.000000 39524.8727  0.05%     -    0s
     0     0 39545.4095    0    2 39546.0000 39545.4095  0.00%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 0 nodes (2313 simplex iterations) in 0.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.954600000000e+04, best bound 3.954540954147e+04, gap 0.0015%