Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:06:37 2013

Optimize a model with 67599 rows, 5476 columns and 205350 nonzeros
Presolve removed 5205 rows and 2778 columns
Presolve time: 0.56s
Presolved: 62394 rows, 2698 columns, 189451 nonzeros
Variable types: 32 continuous, 2666 integer (2666 binary)
Found heuristic solution: objective 111688.00000

Root relaxation: objective 8.403557e+04, 30173 iterations, 3.94 seconds

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

     0     0 84035.5657    0   13 111688.000 84035.5657  24.8%     -    4s
H    0     0                    84082.000000 84035.5657  0.06%     -    4s
H    0     0                    84050.000000 84035.5657  0.02%     -    4s
H    0     0                    84047.000000 84035.5657  0.01%     -    4s
     0     0 84036.8368    0   19 84047.0000 84036.8368  0.01%     -    5s
     0     0 84036.8368    0   12 84047.0000 84036.8368  0.01%     -    5s
     0     0 84037.9745    0   30 84047.0000 84037.9745  0.01%     -    5s
     0     0 84038.3384    0   43 84047.0000 84038.3384  0.01%     -    5s
     0     2 84039.1261    0   43 84047.0000 84039.1261  0.01%     -    5s

Cutting planes:
  Gomory: 2
  MIR: 12

Explored 1 nodes (33218 simplex iterations) in 5.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.404700000000e+04, best bound 8.404000000000e+04, gap 0.0083%