Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:00:59 2013

Optimize a model with 47971 rows, 4356 columns and 145926 nonzeros
Presolve removed 8757 rows and 2307 columns
Presolve time: 0.37s
Presolved: 39214 rows, 2049 columns, 118522 nonzeros
Variable types: 14 continuous, 2035 integer (2035 binary)
Found heuristic solution: objective 104336.00000

Root relaxation: objective 9.030998e+04, 3235 iterations, 0.35 seconds

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

     0     0 90309.9832    0    4 104336.000 90309.9832  13.4%     -    0s
H    0     0                    90316.000000 90309.9832  0.01%     -    0s

Explored 0 nodes (3255 simplex iterations) in 0.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.031600000000e+04, best bound 9.031000000000e+04, gap 0.0066%