Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:12:50 2013

Optimize a model with 85400 rows, 6400 columns and 259200 nonzeros
Presolve removed 5348 rows and 3228 columns
Presolve time: 0.79s
Presolved: 80052 rows, 3172 columns, 243233 nonzeros
Variable types: 40 continuous, 3132 integer (3132 binary)
Found heuristic solution: objective 123671.00000

Root relaxation: objective 8.725089e+04, 27708 iterations, 3.28 seconds

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

     0     0 87250.8864    0   15 123671.000 87250.8864  29.4%     -    4s
H    0     0                    87272.000000 87250.8864  0.02%     -    4s
H    0     0                    87268.000000 87250.8864  0.02%     -    4s
H    0     0                    87265.000000 87250.8864  0.02%     -    4s
     0     0 87251.1225    0   43 87265.0000 87251.1225  0.02%     -    4s
     0     0 87251.1225    0   16 87265.0000 87251.1225  0.02%     -    5s
H    0     0                    87264.000000 87251.1225  0.01%     -    5s
     0     0 87251.1435    0   42 87264.0000 87251.1435  0.01%     -    5s
H    0     0                    87261.000000 87251.1435  0.01%     -    5s
     0     2 87251.4387    0   42 87261.0000 87251.4387  0.01%     -    6s
H    4     3                    87260.000000 87251.4387  0.01%   1.2    6s

Cutting planes:
  Gomory: 2
  MIR: 10
  Zero half: 5

Explored 4 nodes (37329 simplex iterations) in 6.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.726000000000e+04, best bound 8.725200000000e+04, gap 0.0092%