Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:58 2013

Optimize a model with 17343 rows, 2209 columns and 53016 nonzeros
Presolve removed 1982 rows and 1128 columns
Presolve time: 0.12s
Presolved: 15361 rows, 1081 columns, 46962 nonzeros
Variable types: 20 continuous, 1061 integer (1061 binary)
Found heuristic solution: objective 55261.000000

Root relaxation: objective 4.528348e+04, 3232 iterations, 0.15 seconds

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

     0     0 45283.4815    0    6 55261.0000 45283.4815  18.1%     -    0s
H    0     0                    45301.000000 45283.4815  0.04%     -    0s
H    0     0                    45287.000000 45283.4815  0.01%     -    0s

Explored 0 nodes (3235 simplex iterations) in 0.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.528700000000e+04, best bound 4.528400000000e+04, gap 0.0066%