Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:02 2012

Optimize a model with 1 rows, 53 columns and 53 nonzeros
Model has 82 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 83 rows, 134 columns, 298 nonzeros
Variable types: 0 continuous, 134 integer (133 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 0.000000e+00, 106 iterations, 0.00 seconds

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

     0     0    0.00000    0   33   35.00000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   38   31.00000    0.00000   100%     -    0s
     0     0    0.00000    0   26   31.00000    0.00000   100%     -    0s
H    0     0                      24.0000000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   26   22.00000    0.00000   100%     -    0s
H   68    56                      20.0000000    0.00000   100%   3.5    0s
H  134    85                      15.0000000    0.00000   100%   5.0    0s
H  135    68                      12.0000000    0.00000   100%   5.3    0s
*  172    86              10      11.0000000    0.00000   100%   6.2    0s
*  217    96              12      10.0000000    1.00000  90.0%   8.6    0s

Cutting planes:
  Cover: 156

Explored 346 nodes (7005 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%