Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:23 2012

Optimize a model with 739 rows, 55 columns and 1478 nonzeros
Presolve removed 527 rows and 0 columns
Presolve time: 0.01s
Presolved: 212 rows, 55 columns, 1250 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.555277e+00, 105 iterations, 0.00 seconds

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

     0     0    9.55528    0   45    7.00000    9.55528  36.5%     -    0s
     0     0    9.18011    0   46    7.00000    9.18011  31.1%     -    0s
     0     0    9.02211    0   48    7.00000    9.02211  28.9%     -    0s
     0     0    8.95236    0   49    7.00000    8.95236  27.9%     -    0s
     0     0    8.92730    0   51    7.00000    8.92730  27.5%     -    0s
     0     0    8.92222    0   49    7.00000    8.92222  27.5%     -    0s
H    0     0                       8.0000000    8.92222  11.5%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 5

Explored 0 nodes (286 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%