Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:26 2012

Optimize a model with 1 rows, 50 columns and 50 nonzeros
Model has 73 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 74 rows, 122 columns, 268 nonzeros
Variable types: 0 continuous, 122 integer (121 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 0.000000e+00, 97 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   22   23.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   27   21.00000    0.00000   100%     -    0s
     0     0    0.00000    0   24   21.00000    0.00000   100%     -    0s
     0     0    0.00000    0   23   21.00000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   28   19.00000    0.00000   100%     -    0s
     0     0    0.00000    0   26   19.00000    0.00000   100%     -    0s
     0     2    0.00000    0   25   19.00000    0.00000   100%     -    0s
H  121    87                      18.0000000    0.00000   100%   4.4    0s
H  184   114                      14.0000000    0.61538  95.6%   6.0    0s
H  217   114                      13.0000000    1.00000  92.3%   7.1    0s
*  222   105              11      12.0000000    1.00000  91.7%   7.1    0s
*  235    94              13      11.0000000    1.00000  90.9%   7.0    0s

Cutting planes:
  Gomory: 2
  Cover: 143

Explored 411 nodes (7490 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%