Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:03:07 2013

Optimize a model with 54809 rows, 4761 columns and 166635 nonzeros
Presolve removed 3302 rows and 2392 columns
Presolve time: 0.39s
Presolved: 51507 rows, 2369 columns, 156963 nonzeros
Variable types: 37 continuous, 2332 integer (2332 binary)
Found heuristic solution: objective 110983.00000

Root relaxation: objective 8.267630e+04, 16687 iterations, 1.43 seconds

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

     0     0 82676.3000    0   21 110983.000 82676.3000  25.5%     -    2s
H    0     0                    82691.000000 82676.3000  0.02%     -    2s
     0     0 82676.4515    0   28 82691.0000 82676.4515  0.02%     -    2s
     0     0 82676.4515    0   13 82691.0000 82676.4515  0.02%     -    2s
H    0     0                    82688.000000 82676.4515  0.01%     -    2s
     0     0 82676.7193    0   36 82688.0000 82676.7193  0.01%     -    2s
     0     1 82676.7264    0   36 82688.0000 82676.7264  0.01%     -    3s

Cutting planes:
  Gomory: 8
  MIR: 16
  Zero half: 6

Explored 6 nodes (21343 simplex iterations) in 3.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.268800000000e+04, best bound 8.268000000000e+04, gap 0.0097%