Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:11:17 2012

Optimize a model with 264 rows, 752 columns and 752 nonzeros
Model has 526 quadratic constraints
Presolve removed 0 rows and 13 columns
Presolve time: 3.07s
Presolved: 264 rows, 739 columns, 739 nonzeros
Variable types: 526 continuous, 213 integer (212 binary)

Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                     122.0000000          -     -      -    3s
     0     0    0.00000    0   23  122.00000    0.00000   100%     -    3s
     0     0    0.00000    0   91  122.00000    0.00000   100%     -    3s
     0     0    0.00000    0  132  122.00000    0.00000   100%     -    3s
     0     2    0.00000    0  132  122.00000    0.00000   100%     -    3s
H   54    48                      20.0000000    2.80986  86.0%  36.1    3s
*  560   271              14      19.0000000    8.16314  57.0%  20.4    3s
H  581   204                      17.0000000    8.68750  48.9%  20.2    3s
   703   238   14.30833   11  449   17.00000    9.37423  44.9%  19.7    5s
  1873   349     cutoff   21        17.00000   10.29508  39.4%  45.2   10s
  3497   360     cutoff   25        17.00000   13.41379  21.1%  51.8   15s
* 4301    70              23      16.0000000   15.38462  3.85%  51.6   17s

Explored 4378 nodes (225122 simplex iterations) in 17.23 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%