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 101 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 102 rows, 154 columns, 356 nonzeros
Variable types: 0 continuous, 154 integer (153 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 0.000000e+00, 141 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   42   41.00000    0.00000   100%     -    0s
     0     0    0.00000    0   38   41.00000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   44   35.00000    0.00000   100%     -    0s
     0     0    0.00000    0   44   35.00000    0.00000   100%     -    0s
     0     0    0.00000    0   32   35.00000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
H    0     0                      25.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   30   25.00000    0.00000   100%     -    0s
H   27    27                      24.0000000    0.00000   100%   2.7    0s
H   54    49                      21.0000000    0.00000   100%   2.6    0s
H  200   118                      17.0000000    0.00000   100%   8.0    0s
H  236   123                      16.0000000    0.00000   100%   8.4    0s
*  312   107              10      15.0000000    2.00000  86.7%  12.2    0s

Cutting planes:
  Cover: 187

Explored 486 nodes (10874 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%