Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:53:30 2012

Optimize a model with 161 rows, 373 columns and 373 nonzeros
Model has 320 quadratic constraints
Presolve time: 1.87s
Presolved: 161 rows, 373 columns, 373 nonzeros
Variable types: 320 continuous, 53 integer (53 binary)

Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds

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

H    0     0                      74.0000000          -     -      -    1s
     0     0    0.00000    0   36   74.00000    0.00000   100%     -    1s
     0     0    0.24889    0   50   74.00000    0.24889   100%     -    1s
     0     2    0.27778    0   50   74.00000    0.27778   100%     -    1s
H   47    47                      50.0000000    4.00000  92.0%  31.1    1s
*   51    51              28      49.0000000    4.00000  91.8%  29.8    1s
H  136   114                      47.0000000    6.46154  86.3%  28.2    2s
*  234   194              23      45.0000000    9.12629  79.7%  32.3    2s
*  760   451              49      41.0000000   14.71429  64.1%  39.7    3s
H  872   467                      40.0000000   14.71429  63.2%  39.3    3s
H  899   440                      38.0000000   14.71429  61.3%  39.1    3s
  1938   418   30.44400   33  226   38.00000   24.48403  35.6%  29.9    5s
  4574   573   34.78470   33  228   38.00000   30.66667  19.3%  22.4   10s

Explored 6364 nodes (131442 simplex iterations) in 13.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%