Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:56:44 2012

Optimize a model with 128 rows, 277 columns and 277 nonzeros
Model has 254 quadratic constraints
Presolve time: 1.48s
Presolved: 128 rows, 277 columns, 277 nonzeros
Variable types: 254 continuous, 23 integer (23 binary)

Root relaxation: objective 0.000000e+00, 11 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   20   74.00000    0.00000   100%     -    1s
     0     0    0.46860    0   23   74.00000    0.46860  99.4%     -    1s
     0     2    0.51111    0   23   74.00000    0.51111  99.3%     -    1s
*   29    29              15      53.0000000    7.75000  85.4%  30.7    1s
H   53    39                      50.0000000    7.76471  84.5%  28.9    1s
H  178   114                      49.0000000   14.61515  70.2%  29.4    1s
*  412   145              11      48.0000000   20.14107  58.0%  25.1    1s

Explored 2883 nodes (68262 simplex iterations) in 3.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%