Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:16 2012

Optimize a model with 563 rows, 47 columns and 1126 nonzeros
Presolve removed 386 rows and 0 columns
Presolve time: 0.01s
Presolved: 177 rows, 47 columns, 1006 nonzeros
Variable types: 0 continuous, 47 integer (47 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 8.610390e+00, 91 iterations, 0.00 seconds

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

     0     0    8.61039    0   40    5.00000    8.61039  72.2%     -    0s
H    0     0                       6.0000000    8.61039  43.5%     -    0s
     0     0    8.25872    0   40    6.00000    8.25872  37.6%     -    0s
H    0     0                       7.0000000    8.25872  18.0%     -    0s
     0     0    8.16271    0   42    7.00000    8.16271  16.6%     -    0s
     0     0    8.08767    0   44    7.00000    8.08767  15.5%     -    0s
     0     0    8.00787    0   40    7.00000    8.00787  14.4%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 10

Explored 0 nodes (220 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%