Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:26 2013

Optimize a model with 32567 rows, 3364 columns and 99238 nonzeros
Presolve removed 4801 rows and 1754 columns
Presolve time: 0.22s
Presolved: 27766 rows, 1610 columns, 84178 nonzeros
Variable types: 16 continuous, 1594 integer (1594 binary)
Found heuristic solution: objective 81426.000000

Root relaxation: objective 6.692696e+04, 6027 iterations, 0.42 seconds

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

     0     0 66926.9626    0   10 81426.0000 66926.9626  17.8%     -    0s
H    0     0                    66937.000000 66926.9626  0.01%     -    0s
     0     0 66928.1337    0   25 66937.0000 66928.1337  0.01%     -    0s
     0     0 66928.1337    0   11 66937.0000 66928.1337  0.01%     -    0s
H    0     0                    66936.000000 66928.1337  0.01%     -    0s
     0     0 66928.2928    0   25 66936.0000 66928.2928  0.01%     -    0s
     0     2 66928.4219    0   25 66936.0000 66928.4219  0.01%     -    0s

Cutting planes:
  Gomory: 3
  Cover: 1
  Implied bound: 3
  MIR: 10
  Zero half: 3

Explored 10 nodes (6498 simplex iterations) in 1.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.693600000000e+04, best bound 6.693000000000e+04, gap 0.0090%