Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:24:39 2013

Optimize a model with 1793 rows, 484 columns and 5566 nonzeros
Presolve removed 281 rows and 243 columns
Presolve time: 0.01s
Presolved: 1512 rows, 241 columns, 4764 nonzeros
Variable types: 12 continuous, 229 integer (229 binary)
Found heuristic solution: objective 9551.0000000

Root relaxation: objective 6.809668e+03, 1467 iterations, 0.03 seconds

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

     0     0 6809.66816    0   10 9551.00000 6809.66816  28.7%     -    0s
H    0     0                    6829.0000000 6809.66816  0.28%     -    0s
H    0     0                    6827.0000000 6809.66816  0.25%     -    0s
     0     0 6813.19310    0   27 6827.00000 6813.19310  0.20%     -    0s
     0     0 6813.19310    0   12 6827.00000 6813.19310  0.20%     -    0s
     0     0 6813.66138    0   30 6827.00000 6813.66138  0.20%     -    0s
H    0     0                    6824.0000000 6813.66138  0.15%     -    0s
     0     1 6813.66197    0   30 6824.00000 6813.66197  0.15%     -    0s
H    1     1                    6820.0000000 6813.66197  0.09%   3.0    0s

Cutting planes:
  Gomory: 3
  Cover: 2
  Implied bound: 2
  Clique: 1
  MIR: 10
  GUB cover: 2
  Zero half: 1

Explored 13 nodes (1924 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.820000000000e+03, best bound 6.820000000000e+03, gap 0.0%