Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:15:32 2012

Optimize a model with 1 rows, 83 columns and 83 nonzeros
Model has 36 quadratic objective terms
Presolve removed 0 rows and 28 columns
Presolve time: 0.00s
Presolved: 37 rows, 91 columns, 163 nonzeros
Variable types: 0 continuous, 91 integer (90 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 0.000000e+00, 42 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    2    4.00000    0.00000   100%     -    0s
H    0     0                       2.0000000    0.00000   100%     -    0s
     0     0    0.00000    0    2    2.00000    0.00000   100%     -    0s
     0     0    0.00000    0    2    2.00000    0.00000   100%     -    0s
     0     0    0.00000    0    1    2.00000    0.00000   100%     -    0s
H    0     0                       1.0000000    0.00000   100%     -    0s
H    0     0                       0.0000000    0.00000   0.0%     -    0s

Cutting planes:
  Cover: 3

Explored 0 nodes (56 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0%