Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:43 2012

Optimize a model with 151 rows, 470 columns and 470 nonzeros
Model has 300 quadratic constraints
Presolve removed 0 rows and 32 columns
Presolve time: 1.75s
Presolved: 151 rows, 438 columns, 438 nonzeros
Variable types: 300 continuous, 138 integer (137 binary)

Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds

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

H    0     0                      75.0000000          -     -      -    1s
     0     0    0.00000    0   42   75.00000    0.00000   100%     -    1s
     0     0    0.00000    0   46   75.00000    0.00000   100%     -    1s
     0     0    0.00000    0   44   75.00000    0.00000   100%     -    1s
     0     2    0.00000    0   42   75.00000    0.00000   100%     -    1s
H   16    16                       7.0000000    0.69841  90.0%  52.4    1s
*   21    17              13       6.0000000    0.69841  88.4%  45.8    1s
H   54    29                       5.0000000    0.77460  84.5%  31.1    1s
H   55    30                       5.0000000    0.77460  84.5%  32.0    1s
*   55    26              22       4.0000000    0.77460  80.6%  32.1    1s

Cutting planes:

Explored 154 nodes (3980 simplex iterations) in 1.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%