Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:47:17 2012

Optimize a model with 265 rows, 749 columns and 749 nonzeros
Model has 528 quadratic constraints
Presolve removed 0 rows and 14 columns
Presolve time: 3.08s
Presolved: 265 rows, 735 columns, 735 nonzeros
Variable types: 528 continuous, 207 integer (206 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                     125.0000000          -     -      -    3s
     0     0    0.00000    0   11  125.00000    0.00000   100%     -    3s
     0     0    0.00000    0   12  125.00000    0.00000   100%     -    3s
     0     0    0.00000    0  113  125.00000    0.00000   100%     -    3s
     0     2    0.00000    0  113  125.00000    0.00000   100%     -    3s
H   44    44                      26.0000000    3.70370  85.8%  48.0    3s
H  135    93                      25.0000000    4.42708  82.3%  26.0    3s
*  136    90              25      24.0000000    4.42708  81.6%  26.0    3s
*  145    89              33      23.0000000    4.42708  80.8%  25.0    3s
   601   385   22.33333   40  113   23.00000    9.03704  60.7%  18.1    5s
*  809   445              54      22.0000000    9.03704  58.9%  33.1    7s
* 1076   408              47      21.0000000    9.03704  57.0%  32.9    8s
H 1224   384                      20.0000000    9.90805  50.5%  33.1    8s
H 1531   291                      19.0000000   11.48684  39.5%  32.1    9s
  1914   235   16.60494   30  449   19.00000   13.00000  31.6%  32.6   10s

Explored 2912 nodes (95487 simplex iterations) in 13.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%