Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:14 2012 Optimize a model with 219 rows, 633 columns and 633 nonzeros Model has 436 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 2.54s Presolved: 219 rows, 604 columns, 604 nonzeros Variable types: 436 continuous, 168 integer (167 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 99.0000000 - - - 2s 0 0 0.00000 0 97 99.00000 0.00000 100% - 2s 0 0 0.00000 0 127 99.00000 0.00000 100% - 2s 0 0 0.00000 0 118 99.00000 0.00000 100% - 2s 0 2 0.00000 0 118 99.00000 0.00000 100% - 2s * 35 33 25 18.0000000 2.22222 87.7% 40.2 2s * 221 106 22 17.0000000 4.57692 73.1% 22.1 2s * 732 253 39 16.0000000 8.91304 44.3% 27.6 4s 1039 231 14.96460 33 301 16.00000 9.22330 42.4% 28.3 5s Explored 1696 nodes (49384 simplex iterations) in 5.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%