Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:50 2012

Optimize a model with 1 rows, 38 columns and 38 nonzeros
Model has 76 quadratic objective terms
Presolve time: 0.00s
Presolved: 77 rows, 114 columns, 266 nonzeros
Variable types: 0 continuous, 114 integer (114 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 0.000000e+00, 94 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   29   28.00000    0.00000   100%     -    0s
     0     0    0.00000    0   31   28.00000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   26   27.00000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   22   26.00000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   26   22.00000    0.00000   100%     -    0s
     0     0    0.00000    0   26   22.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   24   21.00000    0.00000   100%     -    0s
H  150    95                      20.0000000    1.00000  95.0%   6.7    0s
H  357   150                      19.0000000    3.20000  83.2%   8.8    0s
*  569   147              11      18.0000000    6.25000  65.3%  11.9    0s
H  587   106                      16.0000000    6.96667  56.5%  12.0    0s

Cutting planes:
  Cover: 148

Explored 876 nodes (11662 simplex iterations) in 0.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%