Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:37:40 2012 Optimize a model with 244 rows, 705 columns and 705 nonzeros Model has 486 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 2.84s Presolved: 244 rows, 676 columns, 676 nonzeros Variable types: 486 continuous, 190 integer (189 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 111.0000000 - - - 2s 0 0 0.00000 0 123 111.00000 0.00000 100% - 2s 0 0 0.00000 0 143 111.00000 0.00000 100% - 2s 0 0 0.00000 0 136 111.00000 0.00000 100% - 2s 0 2 0.00000 0 136 111.00000 0.00000 100% - 2s H 38 38 20.0000000 1.97183 90.1% 39.1 2s * 38 38 19 18.0000000 1.97183 89.0% 39.1 2s 704 328 17.83333 31 421 18.00000 9.00000 50.0% 33.2 5s * 990 336 42 17.0000000 9.00000 47.1% 33.2 5s * 1425 203 35 16.0000000 10.17647 36.4% 33.7 6s Explored 2045 nodes (70606 simplex iterations) in 7.75 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%