Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:49 2012

Optimize a model with 1 rows, 52 columns and 52 nonzeros
Model has 70 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 71 rows, 120 columns, 260 nonzeros
Variable types: 0 continuous, 120 integer (119 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 0.000000e+00, 94 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   27   25.00000    0.00000   100%     -    0s
     0     0    0.00000    0   31   25.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12   25.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   12   12.00000    0.00000   100%     -    0s
H   11    11                      11.0000000    0.00000   100%   1.6    0s
H  186   103                      10.0000000    0.00000   100%   5.9    0s
*  187    89              18       9.0000000    0.00000   100%   5.9    0s
*  231    82               7       8.0000000    1.00000  87.5%   7.8    0s

Cutting planes:
  Cover: 137

Explored 321 nodes (6182 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%