Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:23:11 2012

Optimize a model with 267 rows, 747 columns and 747 nonzeros
Model has 532 quadratic constraints
Presolve removed 0 rows and 17 columns
Presolve time: 3.09s
Presolved: 267 rows, 730 columns, 730 nonzeros
Variable types: 532 continuous, 198 integer (197 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                     128.0000000          -     -      -    3s
     0     0    0.00000    0    6  128.00000    0.00000   100%     -    3s
     0     0    0.00000    0  114  128.00000    0.00000   100%     -    3s
     0     0    0.00000    0    2  128.00000    0.00000   100%     -    3s
     0     2    0.00000    0  159  128.00000    0.00000   100%     -    3s
H   40    40                      23.0000000    3.60870  84.3%  48.6    3s
*   50    48              30      21.0000000    3.60870  82.8%  50.4    3s
   606   223   11.23810   11  449   21.00000   11.23810  46.5%  31.9    5s
H 1619   208                      20.0000000   12.93983  35.3%  34.5    7s
* 1864   147              31      19.0000000   14.56140  23.4%  34.1    8s

Explored 2114 nodes (72183 simplex iterations) in 8.78 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%