Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:04:24 2012 Optimize a model with 103 rows, 253 columns and 253 nonzeros Model has 204 quadratic constraints Presolve time: 1.20s Presolved: 103 rows, 253 columns, 253 nonzeros Variable types: 204 continuous, 49 integer (49 binary) Root relaxation: objective 0.000000e+00, 24 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 41.0000000 - - - 1s 0 0 0.00000 0 16 41.00000 0.00000 100% - 1s 0 0 0.00000 0 3 41.00000 0.00000 100% - 1s 0 0 0.00000 0 43 41.00000 0.00000 100% - 1s 0 2 0.00000 0 43 41.00000 0.00000 100% - 1s * 29 29 18 24.0000000 4.51220 81.2% 27.4 1s * 31 27 18 23.0000000 4.51220 80.4% 27.0 1s * 62 46 18 20.0000000 4.60000 77.0% 26.4 1s H 155 69 18.0000000 8.00000 55.6% 25.3 1s * 158 51 11 17.0000000 8.00000 52.9% 25.0 1s * 181 52 15 16.0000000 8.06868 49.6% 23.4 1s Cutting planes: Explored 335 nodes (7694 simplex iterations) in 1.41 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%