Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:27 2012

Optimize a model with 880 rows, 59 columns and 1760 nonzeros
Presolve removed 631 rows and 0 columns
Presolve time: 0.01s
Presolved: 249 rows, 59 columns, 1543 nonzeros
Variable types: 0 continuous, 59 integer (59 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.755338e+00, 138 iterations, 0.00 seconds

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

     0     0    9.75534    0   51    6.00000    9.75534  62.6%     -    0s
H    0     0                       7.0000000    9.75534  39.4%     -    0s
     0     0    9.36095    0   52    7.00000    9.36095  33.7%     -    0s
H    0     0                       8.0000000    9.36095  17.0%     -    0s
     0     0    9.31678    0   56    8.00000    9.31678  16.5%     -    0s
     0     0    9.29267    0   56    8.00000    9.29267  16.2%     -    0s
     0     0    9.22130    0   54    8.00000    9.22130  15.3%     -    0s
     0     0    9.21703    0   52    8.00000    9.21703  15.2%     -    0s
     0     0    9.21502    0   54    8.00000    9.21502  15.2%     -    0s
     0     0    9.21500    0   54    8.00000    9.21500  15.2%     -    0s
     0     2    9.21416    0   54    8.00000    9.21416  15.2%     -    0s

Cutting planes:
  Clique: 17
  Zero half: 6

Explored 3 nodes (365 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%