Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:25 2012

Optimize a model with 109 rows, 280 columns and 280 nonzeros
Model has 216 quadratic constraints
Presolve removed 0 rows and 3 columns
Presolve time: 1.26s
Presolved: 109 rows, 277 columns, 277 nonzeros
Variable types: 216 continuous, 61 integer (60 binary)

Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds

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

H    0     0                      56.0000000          -     -      -    1s
     0     0    0.00000    0   47   56.00000    0.00000   100%     -    1s
     0     0    0.29928    0   57   56.00000    0.29928  99.5%     -    1s
     0     2    0.39446    0   57   56.00000    0.39446  99.3%     -    1s
*   26    26              20      21.0000000    2.84314  86.5%  23.7    1s
H   77    43                      18.0000000    4.24372  76.4%  19.2    1s
H  265    87                      17.0000000    6.84664  59.7%  20.3    1s

Cutting planes:
  Gomory: 1

Explored 1007 nodes (22090 simplex iterations) in 1.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000004e+01, best bound 1.700000000004e+01, gap 0.0%