Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:27:22 2012

Optimize a model with 280 rows, 795 columns and 795 nonzeros
Model has 558 quadratic constraints
Presolve removed 0 rows and 21 columns
Presolve time: 3.26s
Presolved: 280 rows, 774 columns, 774 nonzeros
Variable types: 558 continuous, 216 integer (215 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                     126.0000000          -     -      -    3s
     0     0    0.00000    0   20  126.00000    0.00000   100%     -    3s
     0     0    0.00000    0   24  126.00000    0.00000   100%     -    3s
     0     0    0.00000    0  155  126.00000    0.00000   100%     -    3s
     0     2    0.00000    0  152  126.00000    0.00000   100%     -    3s
H   43    43                      26.0000000    1.93413  92.6%  47.5    3s
*   46    44              32      22.0000000    1.93413  91.2%  47.3    3s
H  113    59                      19.0000000    2.90419  84.7%  36.4    3s
H  191    93                      18.0000000    3.44379  80.9%  37.5    3s
*  202    84              12      17.0000000    3.55102  79.1%  36.8    3s
H  564   109                      16.0000000    6.93269  56.7%  31.8    4s
*  860    92               9      15.0000000    9.73439  35.1%  31.4    4s

Cutting planes:

Explored 1100 nodes (34857 simplex iterations) in 4.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%