Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:29 2012

Optimize a model with 910 rows, 60 columns and 1820 nonzeros
Presolve removed 623 rows and 0 columns
Presolve time: 0.02s
Presolved: 287 rows, 60 columns, 1714 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.008658e+01, 135 iterations, 0.00 seconds

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

     0     0   10.08658    0   52    5.00000   10.08658   102%     -    0s
H    0     0                       6.0000000   10.08658  68.1%     -    0s
     0     0    9.78031    0   56    6.00000    9.78031  63.0%     -    0s
     0     0    9.72433    0   59    6.00000    9.72433  62.1%     -    0s
H    0     0                       7.0000000    9.72433  38.9%     -    0s
     0     0    9.68941    0   57    7.00000    9.68941  38.4%     -    0s
     0     0    9.66614    0   59    7.00000    9.66614  38.1%     -    0s
H    0     0                       8.0000000    9.66614  20.8%     -    0s
     0     0    9.66201    0   58    8.00000    9.66201  20.8%     -    0s
     0     0    9.65596    0   60    8.00000    9.65596  20.7%     -    0s
     0     0    9.65256    0   60    8.00000    9.65256  20.7%     -    0s
     0     0    9.65220    0   60    8.00000    9.65220  20.7%     -    0s
     0     0    9.64745    0   60    8.00000    9.64745  20.6%     -    0s
     0     0    9.64644    0   60    8.00000    9.64644  20.6%     -    0s
     0     2    9.64526    0   60    8.00000    9.64526  20.6%     -    0s

Cutting planes:
  Clique: 28
  Zero half: 3

Explored 11 nodes (683 simplex iterations) in 0.20 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%