Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:12:01 2012

Optimize a model with 277 rows, 778 columns and 778 nonzeros
Model has 552 quadratic constraints
Presolve removed 0 rows and 16 columns
Presolve time: 3.22s
Presolved: 277 rows, 762 columns, 762 nonzeros
Variable types: 552 continuous, 210 integer (209 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                     146.0000000          -     -      -    3s
     0     0    0.00000    0   80  146.00000    0.00000   100%     -    3s
     0     0    0.00000    0  123  146.00000    0.00000   100%     -    3s
     0     0    0.00000    0  123  146.00000    0.00000   100%     -    3s
     0     2    0.00000    0  118  146.00000    0.00000   100%     -    3s
H   52    52                      30.0000000    1.56303  94.8%  37.9    3s
H   54    54                      29.0000000    1.56303  94.6%  37.3    3s
H  205   124                      26.0000000    3.44526  86.7%  23.6    3s
H  305   128                      23.0000000    5.27691  77.1%  22.6    3s
   606   268    8.11036   15  453   23.00000    8.11036  64.7%  28.6    5s
*  749   318              46      21.0000000    8.11036  61.4%  38.7    6s
* 1956   298              43      20.0000000   12.98813  35.1%  38.8    9s
  2269   303   16.84026   32  440   20.00000   13.84026  30.8%  37.7   10s
  3002   241   18.26102   32  457   20.00000   15.46552  22.7%  37.1   15s

Explored 3735 nodes (137478 simplex iterations) in 18.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%