Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:29:14 2013

Optimize a model with 869 rows, 62489 columns and 124899 nonzeros
Presolve time: 0.09s
Presolved: 869 rows, 62489 columns, 124899 nonzeros
Variable types: 62410 continuous, 79 integer (79 binary)

Root relaxation: objective 8.697890e+04, 2169 iterations, 0.08 seconds

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

     0     0 86978.8967    0   10          - 86978.8967     -      -    0s
H    0     0                    96970.000000 86978.8967  10.3%     -    0s
H    0     0                    87656.000000 86978.8967  0.77%     -    0s
     0     0 87372.9677    0    6 87656.0000 87372.9677  0.32%     -    0s
     0     0 87429.1916    0    4 87656.0000 87429.1916  0.26%     -    0s
     0     0 87429.1916    0   10 87656.0000 87429.1916  0.26%     -    0s
     0     0 87429.1916    0    6 87656.0000 87429.1916  0.26%     -    1s
     0     0 87432.5601    0    5 87656.0000 87432.5601  0.25%     -    1s
     0     0 87460.6122    0    4 87656.0000 87460.6122  0.22%     -    1s
     0     0 87463.1927    0    2 87656.0000 87463.1927  0.22%     -    1s
     0     0 87463.5531    0    2 87656.0000 87463.5531  0.22%     -    1s
     0     0 87463.6052    0    2 87656.0000 87463.6052  0.22%     -    1s
     0     0 87463.6052    0    2 87656.0000 87463.6052  0.22%     -    1s
     0     0 87514.2423    0    2 87656.0000 87514.2423  0.16%     -    1s
     0     0 87614.4679    0    2 87656.0000 87614.4679  0.05%     -    1s
     0     0 87629.3837    0    1 87656.0000 87629.3837  0.03%     -    1s
     0     1 87635.0000    0    1 87656.0000 87635.0000  0.02%     -    1s

Cutting planes:
  Implied bound: 60
  Flow cover: 2

Explored 2 nodes (5036 simplex iterations) in 1.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.765600000000e+04, best bound 8.765600000000e+04, gap 0.0%