Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:21 2013

Optimize a model with 781 rows, 50481 columns and 100891 nonzeros
Presolve time: 0.07s
Presolved: 781 rows, 50481 columns, 100891 nonzeros
Variable types: 50410 continuous, 71 integer (71 binary)

Root relaxation: objective 8.628251e+04, 1999 iterations, 0.06 seconds

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

     0     0 86282.5076    0   10          - 86282.5076     -      -    0s
H    0     0                    91483.000000 86282.5076  5.68%     -    0s
H    0     0                    87384.000000 86282.5076  1.26%     -    0s
     0     0 86666.1373    0    8 87384.0000 86666.1373  0.82%     -    0s
     0     0 86683.8070    0    6 87384.0000 86683.8070  0.80%     -    0s
     0     0 86683.8070    0   10 87384.0000 86683.8070  0.80%     -    0s
     0     0 86683.8070    0    8 87384.0000 86683.8070  0.80%     -    0s
     0     0 86684.0302    0    6 87384.0000 86684.0302  0.80%     -    0s
     0     0 86684.7515    0    7 87384.0000 86684.7515  0.80%     -    0s
     0     0 86685.0765    0    5 87384.0000 86685.0765  0.80%     -    1s
     0     0 86686.5760    0    6 87384.0000 86686.5760  0.80%     -    1s
     0     0 86686.9467    0    7 87384.0000 86686.9467  0.80%     -    1s
     0     0 86686.9691    0    6 87384.0000 86686.9691  0.80%     -    1s
     0     0 86687.0001    0    5 87384.0000 86687.0001  0.80%     -    1s
     0     0 86687.0001    0    5 87384.0000 86687.0001  0.80%     -    1s
H    0     0                    86807.000000 86687.0001  0.14%     -    1s
     0     2 86688.3495    0    5 86807.0000 86688.3495  0.14%     -    1s

Cutting planes:
  Implied bound: 95
  Flow cover: 15

Explored 42 nodes (5877 simplex iterations) in 2.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.680700000000e+04, best bound 8.680700000000e+04, gap 0.0%