Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:14 2012

Optimize a model with 222 rows, 640 columns and 640 nonzeros
Model has 442 quadratic constraints
Presolve removed 0 rows and 19 columns
Presolve time: 2.58s
Presolved: 222 rows, 621 columns, 621 nonzeros
Variable types: 442 continuous, 179 integer (178 binary)

Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds

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

H    0     0                     117.0000000          -     -      -    2s
     0     0    0.00000    0    7  117.00000    0.00000   100%     -    2s
     0     0    0.00000    0   10  117.00000    0.00000   100%     -    2s
     0     0    0.00000    0   10  117.00000    0.00000   100%     -    2s
     0     2    0.00000    0   10  117.00000    0.00000   100%     -    2s
H   27    27                      24.0000000    1.49388  93.8%  54.6    2s
H   97    54                      19.0000000    1.57675  91.7%  24.0    2s
*  210    80              25      18.0000000    3.12567  82.6%  18.4    2s
H  246    73                      17.0000000    3.24252  80.9%  21.1    2s
*  374   104               9      16.0000000    6.97080  56.4%  22.3    3s
*  528    97              12      15.0000000    8.89933  40.7%  20.6    3s

Cutting planes:
  Gomory: 1

Explored 1107 nodes (22670 simplex iterations) in 3.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%