Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:23 2013

Optimize a model with 14858 rows, 14478 columns and 57798 nonzeros
Presolve removed 1224 rows and 0 columns
Presolve time: 0.08s
Presolved: 13634 rows, 14478 columns, 55350 nonzeros
Variable types: 14440 continuous, 38 integer (38 binary)

Root relaxation: objective 4.083826e+04, 2722 iterations, 0.19 seconds

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

     0     0 40838.2553    0    1          - 40838.2553     -      -    0s
H    0     0                    41079.000000 40838.2553  0.59%     -    0s
H    0     0                    40843.000000 40838.2553  0.01%     -    0s
     0     0 40838.4142    0    2 40843.0000 40838.4142  0.01%     -    0s
     0     0 40838.4390    0    2 40843.0000 40838.4390  0.01%     -    0s
     0     0     cutoff    0      40843.0000 40843.0000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 0 nodes (2756 simplex iterations) in 0.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.084300000000e+04, best bound 4.084300000000e+04, gap 0.0%