Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:16 2012

Optimize a model with 1 rows, 27 columns and 27 nonzeros
Model has 40 quadratic objective terms
Presolve time: 0.00s
Presolved: 41 rows, 67 columns, 147 nonzeros
Variable types: 0 continuous, 67 integer (67 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 50 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   13   19.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   12   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   38   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   23   12.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   22    7.00000    0.00000   100%     -    0s
H   11    11                       6.0000000    0.00000   100%   2.8    0s
*   60    17               8       5.0000000    1.00000  80.0%   4.0    0s

Cutting planes:
  Cover: 64

Explored 86 nodes (705 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%