Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:55:22 2012

Optimize a model with 118 rows, 256 columns and 256 nonzeros
Model has 234 quadratic constraints
Presolve time: 1.36s
Presolved: 118 rows, 256 columns, 256 nonzeros
Variable types: 234 continuous, 22 integer (22 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                      58.0000000          -     -      -    1s
     0     0    0.00000    0   22   58.00000    0.00000   100%     -    1s
     0     0    0.55000    0   22   58.00000    0.55000  99.1%     -    1s
     0     0    0.55000    0   22   58.00000    0.55000  99.1%     -    1s
     0     2    0.55000    0   22   58.00000    0.55000  99.1%     -    1s
*   28    28              16      52.0000000    4.70000  91.0%  29.0    1s
*   31    27              16      49.0000000    4.70000  90.4%  26.7    1s
H   52    43                      48.0000000    4.84000  89.9%  29.8    1s
H  935   310                      47.0000000   25.00000  46.8%  31.7    2s
* 1381   264              42      46.0000000   25.00000  45.7%  27.4    2s

Explored 3579 nodes (71744 simplex iterations) in 4.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%