Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:04 2013

Optimize a model with 15639 rows, 15249 columns and 60879 nonzeros
Presolve removed 2299 rows and 0 columns
Presolve time: 0.09s
Presolved: 13340 rows, 15249 columns, 56281 nonzeros
Variable types: 15210 continuous, 39 integer (39 binary)

Root relaxation: objective 3.959931e+04, 2052 iterations, 0.12 seconds

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

     0     0 39599.3111    0    1          - 39599.3111     -      -    0s
H    0     0                    39707.000000 39599.3111  0.27%     -    0s
     0     0 39603.1811    0    2 39707.0000 39603.1811  0.26%     -    0s
     0     0 39603.4033    0    2 39707.0000 39603.4033  0.26%     -    0s
     0     0 39692.0000    0    1 39707.0000 39692.0000  0.04%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 0 nodes (2193 simplex iterations) in 0.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.970700000000e+04, best bound 3.970700000000e+04, gap 0.0%