Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:01:10 2013

Optimize a model with 4525 rows, 900 columns and 13950 nonzeros
Presolve removed 1199 rows and 484 columns
Presolve time: 0.03s
Presolved: 3326 rows, 416 columns, 10248 nonzeros
Variable types: 10 continuous, 406 integer (406 binary)
Found heuristic solution: objective 24494.000000

Root relaxation: objective 2.044323e+04, 1430 iterations, 0.03 seconds

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

     0     0 20443.2258    0    3 24494.0000 20443.2258  16.5%     -    0s
H    0     0                    20460.000000 20443.2258  0.08%     -    0s
H    0     0                    20448.000000 20443.2258  0.02%     -    0s
     0     0 20444.1942    0   14 20448.0000 20444.1942  0.02%     -    0s
     0     0 20444.1942    0    5 20448.0000 20444.1942  0.02%     -    0s
     0     0 20444.5184    0   11 20448.0000 20444.5184  0.02%     -    0s
     0     0 20445.6854    0   11 20448.0000 20445.6854  0.01%     -    0s
     0     0 20445.8571    0    6 20448.0000 20445.8571  0.01%     -    0s

Cutting planes:
  Gomory: 1
  Cover: 2
  Implied bound: 1
  Clique: 1
  MIR: 6

Explored 0 nodes (1514 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.044800000000e+04, best bound 2.044800000000e+04, gap 0.0%