Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:18:57 2012 Optimize a model with 105 rows, 268 columns and 268 nonzeros Model has 208 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.22s Presolved: 105 rows, 267 columns, 267 nonzeros Variable types: 208 continuous, 59 integer (58 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 45.0000000 - - - 1s 0 0 0.00000 0 37 45.00000 0.00000 100% - 1s 0 0 0.07540 0 53 45.00000 0.07540 100% - 1s 0 2 0.08520 0 53 45.00000 0.08520 100% - 1s * 35 34 22 20.0000000 3.08021 84.6% 22.3 1s * 61 49 17 19.0000000 3.94261 79.2% 20.5 1s * 374 133 14 18.0000000 8.00000 55.6% 19.6 1s * 405 123 13 17.0000000 8.27904 51.3% 19.2 1s H 463 116 16.0000000 9.56000 40.3% 19.0 1s * 739 60 8 15.0000000 12.37500 17.5% 19.1 1s Cutting planes: Gomory: 1 Explored 820 nodes (15827 simplex iterations) in 1.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%