Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:15 2013

Optimize a model with 13287 rows, 1849 columns and 40678 nonzeros
Presolve removed 2609 rows and 973 columns
Presolve time: 0.09s
Presolved: 10678 rows, 876 columns, 32751 nonzeros
Variable types: 18 continuous, 858 integer (858 binary)
Found heuristic solution: objective 31481.000000

Root relaxation: objective 2.212128e+04, 3683 iterations, 0.15 seconds

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

     0     0 22121.2778    0   15 31481.0000 22121.2778  29.7%     -    0s
H    0     0                    22140.000000 22121.2778  0.08%     -    0s
H    0     0                    22138.000000 22121.2778  0.08%     -    0s
H    0     0                    22133.000000 22121.2778  0.05%     -    0s
     0     0 22121.2778    0   25 22133.0000 22121.2778  0.05%     -    0s
     0     0 22121.2778    0   10 22133.0000 22121.2778  0.05%     -    0s
     0     0 22121.2778    0   30 22133.0000 22121.2778  0.05%     -    0s
H    0     0                    22132.000000 22121.2778  0.05%     -    0s
     0     0 22121.2778    0   32 22132.0000 22121.2778  0.05%     -    0s
     0     2 22121.2778    0   19 22132.0000 22121.2778  0.05%     -    0s
H    1     2                    22131.000000 22121.2778  0.04%  59.0    0s
H   36    23                    22130.000000 22121.7695  0.04%  57.2    0s
H  275   141                    22128.000000 22121.8889  0.03%  21.7    0s
* 4230   990              48    22127.000000 22123.9463  0.01%  16.2    3s

Cutting planes:
  Gomory: 4
  MIR: 61
  Zero half: 21

Explored 6178 nodes (104294 simplex iterations) in 4.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.212700000000e+04, best bound 2.212500000000e+04, gap 0.0090%