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

Optimize a model with 870 rows, 60 columns and 1740 nonzeros
Presolve removed 614 rows and 0 columns
Presolve time: 0.01s
Presolved: 256 rows, 60 columns, 1504 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 1.049871e+01, 159 iterations, 0.00 seconds

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

     0     0   10.49871    0   57    8.00000   10.49871  31.2%     -    0s
     0     0    9.93421    0   57    8.00000    9.93421  24.2%     -    0s
     0     0    9.83874    0   58    8.00000    9.83874  23.0%     -    0s
     0     0    9.77072    0   58    8.00000    9.77072  22.1%     -    0s
     0     0    9.73731    0   58    8.00000    9.73731  21.7%     -    0s
     0     0    9.72923    0   59    8.00000    9.72923  21.6%     -    0s
     0     0    9.72129    0   59    8.00000    9.72129  21.5%     -    0s
     0     0    9.72107    0   59    8.00000    9.72107  21.5%     -    0s
     0     0    9.72105    0   59    8.00000    9.72105  21.5%     -    0s
     0     2    9.72006    0   59    8.00000    9.72006  21.5%     -    0s

Cutting planes:
  Clique: 37
  Zero half: 1

Explored 11 nodes (736 simplex iterations) in 0.14 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%