Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:21 2012

Optimize a model with 1 rows, 28 columns and 28 nonzeros
Model has 40 quadratic objective terms
Presolve time: 0.00s
Presolved: 41 rows, 68 columns, 148 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 0.000000e+00, 54 iterations, 0.00 seconds

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

     0     0    0.00000    0   16   18.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   25   16.00000    0.00000   100%     -    0s
     0     0    0.00000    0    9   16.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
H    0     0                       4.0000000    0.00000   100%     -    0s
     0     2    0.00000    0    7    4.00000    0.00000   100%     -    0s

Cutting planes:
  Gomory: 3
  Cover: 69

Explored 119 nodes (861 simplex iterations) in 0.02 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%