Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:22:34 2013

Optimize a model with 9177 rows, 1444 columns and 28158 nonzeros
Presolve removed 1210 rows and 735 columns
Presolve time: 0.07s
Presolved: 7967 rows, 709 columns, 24596 nonzeros
Variable types: 20 continuous, 689 integer (689 binary)
Found heuristic solution: objective 26537.000000
Found heuristic solution: objective 24426.000000

Root relaxation: objective 1.822150e+04, 3935 iterations, 0.15 seconds

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

     0     0 18221.5000    0    5 24426.0000 18221.5000  25.4%     -    0s
H    0     0                    18239.000000 18221.5000  0.10%     -    0s
H    0     0                    18227.000000 18221.5000  0.03%     -    0s
     0     0 18222.2273    0   13 18227.0000 18222.2273  0.03%     -    0s
     0     0 18222.2273    0    7 18227.0000 18222.2273  0.03%     -    0s
     0     0 18222.9373    0   32 18227.0000 18222.9373  0.02%     -    0s
     0     1 18222.9671    0   32 18227.0000 18222.9671  0.02%     -    0s
H    1     1                    18226.000000 18222.9671  0.02%   2.0    0s

Cutting planes:
  Gomory: 3
  Cover: 4
  Implied bound: 1
  MIR: 5
  GUB cover: 2
  Zero half: 6

Explored 5 nodes (4352 simplex iterations) in 0.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.822600000000e+04, best bound 1.822500000000e+04, gap 0.0055%