Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:16 2012

Optimize a model with 1 rows, 49 columns and 49 nonzeros
Model has 55 quadratic objective terms
Presolve removed 0 rows and 6 columns
Presolve time: 0.00s
Presolved: 56 rows, 98 columns, 208 nonzeros
Variable types: 0 continuous, 98 integer (97 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 69 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   17   19.00000    0.00000   100%     -    0s
H    0     0                      14.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   15   14.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12   14.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   10   12.00000    0.00000   100%     -    0s
H    0     0                       6.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   31    6.00000    0.00000   100%     -    0s
     0     0    0.00000    0    8    6.00000    0.00000   100%     -    0s
     0     2    0.00000    0    8    6.00000    0.00000   100%     -    0s
H  115    49                       5.0000000    0.00000   100%   4.8    0s
*  162    35              11       4.0000000    1.00000  75.0%   6.2    0s

Cutting planes:
  Cover: 100

Explored 198 nodes (2000 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%