Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:01:59 2012

Optimize a model with 286 rows, 803 columns and 803 nonzeros
Model has 570 quadratic constraints
Presolve removed 0 rows and 23 columns
Presolve time: 3.31s
Presolved: 286 rows, 780 columns, 780 nonzeros
Variable types: 570 continuous, 210 integer (209 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                     144.0000000          -     -      -    3s
     0     0    0.00000    0  114  144.00000    0.00000   100%     -    3s
     0     0    0.00000    0  144  144.00000    0.00000   100%     -    3s
     0     0    0.00000    0  144  144.00000    0.00000   100%     -    3s
     0     2    0.00000    0  144  144.00000    0.00000   100%     -    3s
H   54    54                      45.0000000    2.60606  94.2%  29.4    3s
*   75    68              46      27.0000000    2.60606  90.3%  26.2    3s
H  114    80                      23.0000000    2.61765  88.6%  24.2    3s
   606   320    9.21296   16  479   23.00000    9.21296  59.9%  35.1    5s
*  906   414              38      20.0000000    9.21296  53.9%  43.4    6s
  2101   377     cutoff   35        20.00000   12.60825  37.0%  38.5   10s
H 2230   364                      19.0000000   13.00000  31.6%  38.1   10s
  3005   277     cutoff   33        19.00000   14.53846  23.5%  38.8   15s
  3323   199   15.95855   35  475   19.00000   15.23077  19.8%  39.4   20s

Explored 3759 nodes (146005 simplex iterations) in 21.86 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%