Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:14 2012

Optimize a model with 1 rows, 54 columns and 54 nonzeros
Model has 83 quadratic objective terms
Presolve time: 0.00s
Presolved: 84 rows, 137 columns, 303 nonzeros
Variable types: 0 continuous, 137 integer (137 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 0.000000e+00, 105 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   31   29.00000    0.00000   100%     -    0s
     0     0    0.00000    0   30   29.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   29   27.00000    0.00000   100%     -    0s
H    0     0                      24.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   32   24.00000    0.00000   100%     -    0s
     0     0    0.00000    0   22   24.00000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
H    0     0                      19.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   22   19.00000    0.00000   100%     -    0s
H    8     8                      17.0000000    0.00000   100%   5.0    0s
H  193   100                      12.0000000    0.00000   100%   7.0    0s
*  247    98               9      11.0000000    0.00000   100%   9.5    0s

Cutting planes:
  Cover: 156
  MIR: 2

Explored 381 nodes (7635 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%