Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:22 2012

Optimize a model with 706 rows, 55 columns and 1412 nonzeros
Presolve removed 478 rows and 0 columns
Presolve time: 0.01s
Presolved: 228 rows, 55 columns, 1221 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.015699e+01, 134 iterations, 0.00 seconds

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

     0     0   10.15699    0   50    7.00000   10.15699  45.1%     -    0s
     0     0    9.84516    0   50    7.00000    9.84516  40.6%     -    0s
H    0     0                       8.0000000    9.84516  23.1%     -    0s
     0     0    9.71525    0   54    8.00000    9.71525  21.4%     -    0s
     0     0    9.71030    0   54    8.00000    9.71030  21.4%     -    0s
     0     0    9.68333    0   54    8.00000    9.68333  21.0%     -    0s
     0     0    9.67267    0   54    8.00000    9.67267  20.9%     -    0s
     0     2    9.66697    0   54    8.00000    9.66697  20.8%     -    0s

Cutting planes:
  Clique: 19
  Zero half: 5

Explored 11 nodes (591 simplex iterations) in 0.10 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%