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

Optimize a model with 826 rows, 58 columns and 1652 nonzeros
Presolve removed 588 rows and 0 columns
Presolve time: 0.01s
Presolved: 238 rows, 58 columns, 1370 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.014253e+01, 124 iterations, 0.00 seconds

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

     0     0   10.14253    0   51    7.00000   10.14253  44.9%     -    0s
H    0     0                       8.0000000   10.14253  26.8%     -    0s
     0     0    9.81168    0   57    8.00000    9.81168  22.6%     -    0s
     0     0    9.78139    0   56    8.00000    9.78139  22.3%     -    0s
     0     0    9.74134    0   56    8.00000    9.74134  21.8%     -    0s
     0     0    9.73697    0   56    8.00000    9.73697  21.7%     -    0s
     0     0    9.71985    0   56    8.00000    9.71985  21.5%     -    0s
     0     0    9.71941    0   56    8.00000    9.71941  21.5%     -    0s
     0     2    9.71836    0   56    8.00000    9.71836  21.5%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 25
  Zero half: 6

Explored 11 nodes (580 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%