Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:01:36 2013

Optimize a model with 58596 rows, 57836 columns and 231116 nonzeros
Presolve removed 3582 rows and 0 columns
Presolve time: 0.36s
Presolved: 55014 rows, 57836 columns, 223952 nonzeros
Variable types: 57760 continuous, 76 integer (76 binary)

Root relaxation: objective 7.865149e+04, 10866 iterations, 2.40 seconds

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

     0     0 78651.4914    0    6          - 78651.4914     -      -    2s
H    0     0                    79217.000000 78651.4914  0.71%     -    3s
     0     0 78658.0030    0    6 79217.0000 78658.0030  0.71%     -    3s
     0     0 78658.0686    0    6 79217.0000 78658.0686  0.71%     -    3s
     0     0 78658.0686    0    6 79217.0000 78658.0686  0.71%     -    4s
H    0     0                    78800.000000 78658.0686  0.18%     -    5s
     0     0 78658.0686    0    5 78800.0000 78658.0686  0.18%     -    7s
     0     0 78658.9599    0    5 78800.0000 78658.9599  0.18%     -    7s
     0     0 78658.9599    0    5 78800.0000 78658.9599  0.18%     -    7s
     0     2 78659.8971    0    5 78800.0000 78659.8971  0.18%     -    8s
*   11     2               7    78781.000000 78706.7837  0.09%  94.0    9s

Cutting planes:
  Gomory: 2
  Flow cover: 5

Explored 24 nodes (16579 simplex iterations) in 9.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.878100000000e+04, best bound 7.878100000000e+04, gap 0.0%