Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:26:07 2012

Optimize a model with 197 rows, 420 columns and 420 nonzeros
Model has 392 quadratic constraints
Presolve time: 2.28s
Presolved: 197 rows, 420 columns, 420 nonzeros
Variable types: 392 continuous, 28 integer (28 binary)

Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds

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

H    0     0                      93.0000000          -     -      -    2s
     0     0    0.00000    0   28   93.00000    0.00000   100%     -    2s
     0     0    0.50000    0   28   93.00000    0.50000  99.5%     -    2s
     0     2    0.56250    0   28   93.00000    0.56250  99.4%     -    2s
*   38    38              20      83.0000000    7.47619  91.0%  53.1    2s
H   70    58                      78.0000000    7.53333  90.3%  46.9    2s
*   73    55              16      77.0000000    7.53333  90.2%  45.8    2s
  1019   478   53.26316   29  236   77.00000   30.42017  60.5%  55.0    5s
  5422  1232   63.00000   33  231   77.00000   50.30880  34.7%  30.4   10s
 10367  1791   71.15385   35  230   77.00000   57.03549  25.9%  26.3   15s
 15555  1874   73.36871   33  243   77.00000   61.15385  20.6%  24.6   20s
 20987  1589     cutoff   43        77.00000   64.09861  16.8%  23.6   25s
 26642   807   76.40000   41  208   77.00000   68.75000  10.7%  22.8   30s

Explored 28620 nodes (642367 simplex iterations) in 31.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.700000000000e+01, best bound 7.700000000000e+01, gap 0.0%