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 98 quadratic objective terms
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 99 rows, 149 columns, 345 nonzeros
Variable types: 0 continuous, 149 integer (148 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 0.000000e+00, 122 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   50   45.00000    0.00000   100%     -    0s
     0     0    0.00000    0   34   45.00000    0.00000   100%     -    0s
H    0     0                      32.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   45   30.00000    0.00000   100%     -    0s
     0     0    0.00000    0   27   30.00000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
H    0     0                      25.0000000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   25   23.00000    0.00000   100%     -    0s
H  188   142                      22.0000000    0.00000   100%   6.3    0s
H  236   123                      18.0000000    0.00000   100%   8.2    0s
H  239   111                      17.0000000    0.00000   100%   8.2    0s

Cutting planes:
  Cover: 191

Explored 629 nodes (12410 simplex iterations) in 0.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%