Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:56:30 2013

Optimize a model with 7806 rows, 1296 columns and 23976 nonzeros
Presolve removed 1076 rows and 662 columns
Presolve time: 0.05s
Presolved: 6730 rows, 634 columns, 20751 nonzeros
Variable types: 17 continuous, 617 integer (617 binary)
Found heuristic solution: objective 30853.000000

Root relaxation: objective 2.238727e+04, 3502 iterations, 0.12 seconds

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

     0     0 22387.2727    0    9 30853.0000 22387.2727  27.4%     -    0s
H    0     0                    22408.000000 22387.2727  0.09%     -    0s
H    0     0                    22400.000000 22387.2727  0.06%     -    0s
H    0     0                    22399.000000 22387.2727  0.05%     -    0s
     0     0 22387.2727    0   12 22399.0000 22387.2727  0.05%     -    0s
     0     0 22387.2727    0   10 22399.0000 22387.2727  0.05%     -    0s
H    0     0                    22396.000000 22387.2727  0.04%     -    0s
     0     0 22387.2727    0   11 22396.0000 22387.2727  0.04%     -    0s
H    0     0                    22393.000000 22387.2727  0.03%     -    0s
     0     1 22387.2727    0   10 22393.0000 22387.2727  0.03%     -    0s

Cutting planes:
  Gomory: 8
  Cover: 5
  MIR: 12
  GUB cover: 1
  Zero half: 3

Explored 90 nodes (4796 simplex iterations) in 0.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.239300000000e+04, best bound 2.239100000000e+04, gap 0.0089%