Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:16:57 2012

Optimize a model with 287 rows, 813 columns and 813 nonzeros
Model has 572 quadratic constraints
Presolve removed 0 rows and 14 columns
Presolve time: 3.34s
Presolved: 287 rows, 799 columns, 799 nonzeros
Variable types: 572 continuous, 227 integer (226 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                     137.0000000          -     -      -    3s
     0     0    0.00000    0    3  137.00000    0.00000   100%     -    3s
     0     0    0.00000    0  143  137.00000    0.00000   100%     -    3s
     0     0    0.00000    0  133  137.00000    0.00000   100%     -    3s
     0     2    0.00000    0  133  137.00000    0.00000   100%     -    3s
H   38    38                      29.0000000    1.43478  95.1%  65.4    3s
*   38    38              23      24.0000000    1.43478  94.0%  66.7    3s
H  179   141                      23.0000000    2.34831  89.8%  40.1    3s
*  390   257              18      22.0000000    4.46667  79.7%  32.3    4s
*  575   254              18      20.0000000    6.51240  67.4%  30.4    4s
   714   306    7.77358   19  470   20.00000    7.21101  63.9%  36.0    5s
* 1518   230              31      18.0000000   11.38889  36.7%  39.5    7s

Explored 1975 nodes (79101 simplex iterations) in 8.81 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%