Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:57 2012

Optimize a model with 1 rows, 47 columns and 47 nonzeros
Model has 73 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 74 rows, 118 columns, 264 nonzeros
Variable types: 0 continuous, 118 integer (117 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 0.000000e+00, 93 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   23   32.00000    0.00000   100%     -    0s
H    0     0                      18.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   33   18.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   17   16.00000    0.00000   100%     -    0s
     0     0    0.00000    0   20   16.00000    0.00000   100%     -    0s
     0     0    0.00000    0   20   16.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   15   15.00000    0.00000   100%     -    0s
H  173   114                      13.0000000    0.00000   100%   6.3    0s
*  180    97              16      12.0000000    0.00000   100%   6.2    0s
H  275   107                      11.0000000    2.00000  81.8%   9.1    0s

Cutting planes:
  Cover: 138

Explored 417 nodes (6872 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%