Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:07 2013

Optimize a model with 17343 rows, 2209 columns and 53016 nonzeros
Presolve removed 2389 rows and 1139 columns
Presolve time: 0.12s
Presolved: 14954 rows, 1070 columns, 45698 nonzeros
Variable types: 19 continuous, 1051 integer (1051 binary)
Found heuristic solution: objective 42437.000000

Root relaxation: objective 3.270642e+04, 3821 iterations, 0.18 seconds

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

     0     0 32706.4167    0    8 42437.0000 32706.4167  22.9%     -    0s
H    0     0                    32723.000000 32706.4167  0.05%     -    0s
H    0     0                    32714.000000 32706.4167  0.02%     -    0s
H    0     0                    32712.000000 32706.4167  0.02%     -    0s
     0     0 32707.0489    0   15 32712.0000 32707.0489  0.02%     -    0s
     0     0 32707.0489    0   10 32712.0000 32707.0489  0.02%     -    0s
     0     0 32707.0553    0   16 32712.0000 32707.0553  0.02%     -    0s
     0     0 32707.2534    0   20 32712.0000 32707.2534  0.01%     -    0s
     0     0 32707.6451    0   18 32712.0000 32707.6451  0.01%     -    0s
     0     0 32707.7419    0   21 32712.0000 32707.7419  0.01%     -    0s
     0     0 32707.8753    0   20 32712.0000 32707.8753  0.01%     -    0s
     0     0 32708.0068    0   20 32712.0000 32708.0068  0.01%     -    0s
     0     0 32708.0163    0   18 32712.0000 32708.0163  0.01%     -    0s
     0     0 32708.0163    0   18 32712.0000 32708.0163  0.01%     -    0s
H    0     0                    32711.000000 32708.0163  0.01%     -    0s

Cutting planes:
  Cover: 1
  MIR: 12

Explored 0 nodes (4065 simplex iterations) in 0.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.271100000000e+04, best bound 3.270900000000e+04, gap 0.0061%