Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:34:04 2012

Optimize a model with 185 rows, 428 columns and 428 nonzeros
Model has 368 quadratic constraints
Presolve time: 2.15s
Presolved: 185 rows, 428 columns, 428 nonzeros
Variable types: 368 continuous, 60 integer (60 binary)

Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds

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

H    0     0                      84.0000000          -     -      -    2s
     0     0    0.00000    0   24   84.00000    0.00000   100%     -    2s
     0     0    0.00000    0   32   84.00000    0.00000   100%     -    2s
     0     0    0.00000    0   32   84.00000    0.00000   100%     -    2s
     0     2    0.00000    0   32   84.00000    0.00000   100%     -    2s
*   39    39              27      60.0000000    7.44792  87.6%  32.1    2s
*   41    39              28      56.0000000    7.44792  86.7%  31.6    2s
H   74    67                      47.0000000    7.50000  84.0%  28.8    2s
  1384   622   46.04545   46  228   47.00000   17.01841  63.8%  38.6    5s
* 3244  1400              51      46.0000000   21.26531  53.8%  27.9    7s
* 3361  1414              42      45.0000000   21.54545  52.1%  27.9    7s
  5301  2184   37.36585   43  261   45.00000   25.00000  44.4%  24.5   10s
H 5331  2121                      44.0000000   25.00000  43.2%  24.5   10s
  6115  2351   30.88679   44  258   44.00000   25.85185  41.2%  23.8   15s
  9392  3119   34.96000   35  259   44.00000   28.62222  34.9%  21.9   20s
 12507  3656   40.57143   44  244   44.00000   30.38710  30.9%  20.9   25s
 15496  3956   41.95000   43  223   44.00000   31.68750  28.0%  20.3   30s
 19600  4238   39.33333   40  230   44.00000   33.13333  24.7%  19.8   35s
 24147  4351     cutoff   39        44.00000   34.57143  21.4%  19.4   40s
 28342  4156     cutoff   44        44.00000   35.85714  18.5%  19.2   45s
 32167  3742   41.76316   50  212   44.00000   36.95000  16.0%  19.0   50s
 36863  2837   42.93878   42  247   44.00000   38.30769  12.9%  18.9   55s
 41474   757     cutoff   45        44.00000   40.75000  7.39%  18.7   60s

Explored 42610 nodes (787896 simplex iterations) in 60.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.400000000005e+01, best bound 4.400000000005e+01, gap 0.0%