Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:07:51 2013

Optimize a model with 70375 rows, 5625 columns and 213750 nonzeros
Presolve removed 6211 rows and 2863 columns
Presolve time: 0.64s
Presolved: 64164 rows, 2762 columns, 195003 nonzeros
Variable types: 35 continuous, 2727 integer (2727 binary)
Found heuristic solution: objective 115349.00000

Root relaxation: objective 8.411788e+04, 18423 iterations, 1.78 seconds

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

     0     0 84117.8833    0   11 115349.000 84117.8833  27.1%     -    2s
H    0     0                    84135.000000 84117.8833  0.02%     -    2s
H    0     0                    84129.000000 84117.8833  0.01%     -    2s
H    0     0                    84125.000000 84117.8833  0.01%     -    2s

Explored 0 nodes (18525 simplex iterations) in 2.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.412500000000e+04, best bound 8.411800000000e+04, gap 0.0083%