Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:06 2012

Optimize a model with 220 rows, 636 columns and 636 nonzeros
Model has 438 quadratic constraints
Presolve removed 0 rows and 20 columns
Presolve time: 2.55s
Presolved: 220 rows, 616 columns, 616 nonzeros
Variable types: 438 continuous, 178 integer (177 binary)

Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                     117.0000000          -     -      -    2s
     0     0    0.00000    0   10  117.00000    0.00000   100%     -    2s
     0     0    0.00000    0    2  117.00000    0.00000   100%     -    2s
     0     0    0.00000    0    2  117.00000    0.00000   100%     -    2s
     0     2    0.00000    0   94  117.00000    0.00000   100%     -    2s
*   34    30              24      15.0000000    1.64000  89.1%  70.9    2s
*  287   137              14      14.0000000    4.85714  65.3%  26.1    2s
*  821   224              31      13.0000000    7.71429  40.7%  33.0    4s
   990   147   11.56432   27  342   13.00000    9.85714  24.2%  32.9    5s

Explored 1035 nodes (34449 simplex iterations) in 5.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%