Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:37:03 2012

Optimize a model with 278 rows, 784 columns and 784 nonzeros
Model has 554 quadratic constraints
Presolve removed 0 rows and 17 columns
Presolve time: 3.23s
Presolved: 278 rows, 767 columns, 767 nonzeros
Variable types: 554 continuous, 213 integer (212 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                     141.0000000          -     -      -    3s
     0     0    0.00000    0    4  141.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  141.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  141.00000    0.00000   100%     -    3s
     0     2    0.00000    0   78  141.00000    0.00000   100%     -    3s
H   42    42                      27.0000000    1.88406  93.0%  51.0    3s
H   54    50                      26.0000000    1.88406  92.8%  43.0    3s
H  123    68                      25.0000000    1.90291  92.4%  29.5    3s
*  123    62              25      24.0000000    1.90291  92.1%  29.6    3s
*  350   195              19      23.0000000    2.60345  88.7%  24.0    3s
   606   297    6.60991   12  475   23.00000    6.60991  71.3%  27.5    5s
*  685   311              30      20.0000000    6.60991  67.0%  38.3    5s
*  687   290              30      19.0000000    6.60991  65.2%  38.2    5s
H  913   351                      18.0000000    6.60991  63.3%  48.6    8s
  1332   298   14.79600   36  469   18.00000   10.36585  42.4%  47.4   10s

Explored 2308 nodes (103870 simplex iterations) in 12.53 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%