Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:06:59 2013

Optimize a model with 67599 rows, 5476 columns and 205350 nonzeros
Presolve removed 5210 rows and 2778 columns
Presolve time: 0.54s
Presolved: 62389 rows, 2698 columns, 189438 nonzeros
Variable types: 32 continuous, 2666 integer (2666 binary)
Found heuristic solution: objective 110248.00000

Root relaxation: objective 8.391588e+04, 17178 iterations, 1.82 seconds

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

     0     0 83915.8750    0   14 110248.000 83915.8750  23.9%     -    2s
H    0     0                    83928.000000 83915.8750  0.01%     -    2s
H    0     0                    83927.000000 83915.8750  0.01%     -    2s
H    0     0                    83925.000000 83915.8750  0.01%     -    2s
     0     0 83918.0723    0   22 83925.0000 83918.0723  0.01%     -    2s

Cutting planes:
  Gomory: 7
  Implied bound: 1
  MIR: 11
  Zero half: 4

Explored 0 nodes (17369 simplex iterations) in 2.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.392500000000e+04, best bound 8.391900000000e+04, gap 0.0071%