Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:03:13 2012

Optimize a model with 279 rows, 781 columns and 781 nonzeros
Model has 556 quadratic constraints
Presolve removed 0 rows and 13 columns
Presolve time: 3.24s
Presolved: 279 rows, 768 columns, 768 nonzeros
Variable types: 556 continuous, 212 integer (211 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                     142.0000000          -     -      -    3s
     0     0    0.00000    0   48  142.00000    0.00000   100%     -    3s
     0     0    0.00000    0   42  142.00000    0.00000   100%     -    3s
     0     0    0.00000    0  183  142.00000    0.00000   100%     -    3s
     0     2    0.00000    0  182  142.00000    0.00000   100%     -    3s
*   25    25              14      18.0000000    2.64615  85.3%  62.7    3s
   606   142   12.15094   15  470   18.00000   12.15094  32.5%  31.6    5s
  2510   200   17.39000   40  362   18.00000   14.03774  22.0%  32.7   10s

Explored 3400 nodes (106190 simplex iterations) in 11.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%