Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:41 2012

Optimize a model with 215 rows, 621 columns and 621 nonzeros
Model has 428 quadratic constraints
Presolve removed 0 rows and 21 columns
Presolve time: 2.52s
Presolved: 215 rows, 600 columns, 600 nonzeros
Variable types: 428 continuous, 172 integer (171 binary)

Root relaxation: objective 0.000000e+00, 75 iterations, 0.00 seconds

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

H    0     0                     112.0000000          -     -      -    2s
     0     0    0.00000    0   85  112.00000    0.00000   100%     -    2s
     0     0    0.00000    0  100  112.00000    0.00000   100%     -    2s
     0     0    0.00000    0   96  112.00000    0.00000   100%     -    2s
     0     2    0.00000    0   96  112.00000    0.00000   100%     -    2s
*   38    34              26      21.0000000    4.11180  80.4%  29.0    2s
H   81    55                      20.0000000    4.28571  78.6%  23.1    2s
H  105    44                      15.0000000    4.42857  70.5%  23.2    2s
*  164    44              22      12.0000000    5.55444  53.7%  20.5    2s

Cutting planes:
  Gomory: 1

Explored 364 nodes (9389 simplex iterations) in 3.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%