Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:59 2012

Optimize a model with 119 rows, 310 columns and 310 nonzeros
Model has 236 quadratic constraints
Presolve removed 0 rows and 1 columns
Presolve time: 1.38s
Presolved: 119 rows, 309 columns, 309 nonzeros
Variable types: 236 continuous, 73 integer (72 binary)

Root relaxation: objective 0.000000e+00, 37 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                      67.0000000          -     -      -    1s
     0     0    0.00000    0    6   67.00000    0.00000   100%     -    1s
     0     0    0.00000    0   41   67.00000    0.00000   100%     -    1s
     0     0    0.00000    0   41   67.00000    0.00000   100%     -    1s
     0     2    0.00000    0   41   67.00000    0.00000   100%     -    1s
*   33    33              26      22.0000000    2.38462  89.2%  29.6    1s
H   54    45                      21.0000000    4.42857  78.9%  26.9    1s
*  147    80              18      19.0000000    7.15789  62.3%  18.3    1s
*  497   137              15      18.0000000   10.00000  44.4%  16.4    1s

Explored 1873 nodes (36320 simplex iterations) in 2.94 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%