Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:03:49 2013

Optimize a model with 57225 rows, 4900 columns and 173950 nonzeros
Presolve removed 5875 rows and 2509 columns
Presolve time: 0.47s
Presolved: 51350 rows, 2391 columns, 155924 nonzeros
Variable types: 28 continuous, 2363 integer (2363 binary)
Found heuristic solution: objective 106592.00000

Root relaxation: objective 8.507190e+04, 10284 iterations, 0.95 seconds

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

     0     0 85071.9000    0    9 106592.000 85071.9000  20.2%     -    1s
H    0     0                    85091.000000 85071.9000  0.02%     -    1s
H    0     0                    85085.000000 85071.9000  0.02%     -    1s
H    0     0                    85080.000000 85071.9000  0.01%     -    1s

Explored 0 nodes (10373 simplex iterations) in 1.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.508000000000e+04, best bound 8.507200000000e+04, gap 0.0094%