Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:30:37 2012

Optimize a model with 162 rows, 398 columns and 398 nonzeros
Model has 322 quadratic constraints
Presolve time: 1.90s
Presolved: 162 rows, 398 columns, 398 nonzeros
Variable types: 322 continuous, 76 integer (76 binary)

Root relaxation: objective 0.000000e+00, 38 iterations, 0.00 seconds

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

H    0     0                      90.0000000          -     -      -    1s
     0     0    0.00000    0   40   90.00000    0.00000   100%     -    1s
     0     0    0.04971    0   72   90.00000    0.04971   100%     -    1s
     0     2    0.06445    0   72   90.00000    0.06445   100%     -    1s
*   35    35              19      34.0000000    4.05128  88.1%  32.3    2s
H  239   181                      33.0000000    7.25490  78.0%  32.2    2s
*  515   258              19      32.0000000   11.50000  64.1%  31.0    2s
  2030   588   28.19048   31  227   32.00000   19.34375  39.6%  28.2    5s
  7537  1314   31.03500   29  236   32.00000   25.38244  20.7%  20.1   10s
 13525  1131   28.65957   33  188   32.00000   28.00000  12.5%  18.2   15s
*15128   497              34      31.0000000   28.80247  7.09%  17.9   16s

Explored 15705 nodes (276487 simplex iterations) in 16.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%