Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:18:00 2012 Optimize a model with 222 rows, 654 columns and 654 nonzeros Model has 442 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 2.58s Presolved: 222 rows, 625 columns, 625 nonzeros Variable types: 442 continuous, 183 integer (182 binary) Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 100.0000000 - - - 2s 0 0 0.00000 0 59 100.00000 0.00000 100% - 2s 0 0 0.00000 0 100 100.00000 0.00000 100% - 2s 0 0 0.00000 0 100 100.00000 0.00000 100% - 2s 0 2 0.00000 0 100 100.00000 0.00000 100% - 2s H 52 52 19.0000000 1.33333 93.0% 24.3 2s * 53 51 40 18.0000000 1.33333 92.6% 24.0 2s * 183 92 34 14.0000000 2.78100 80.1% 16.5 2s * 559 191 29 13.0000000 5.00000 61.5% 16.0 3s 1044 280 9.66667 18 547 13.00000 6.01887 53.7% 27.5 5s * 1531 229 42 12.0000000 6.94000 42.2% 29.7 6s Explored 1893 nodes (58580 simplex iterations) in 6.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%