Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:14 2012 Optimize a model with 81 rows, 199 columns and 199 nonzeros Model has 160 quadratic constraints Presolve time: 0.93s Presolved: 81 rows, 199 columns, 199 nonzeros Variable types: 160 continuous, 39 integer (39 binary) Root relaxation: objective 0.000000e+00, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 48.0000000 - - - 0s 0 0 0.00000 0 18 48.00000 0.00000 100% - 0s 0 0 0.00000 0 33 48.00000 0.00000 100% - 0s 0 0 0.00000 0 33 48.00000 0.00000 100% - 0s 0 2 0.00000 0 21 48.00000 0.00000 100% - 0s * 24 24 15 19.0000000 3.72727 80.4% 22.9 0s * 28 24 17 18.0000000 3.72727 79.3% 19.9 0s * 32 20 20 17.0000000 3.72727 78.1% 17.7 0s * 157 63 13 16.0000000 7.25000 54.7% 20.5 1s Cutting planes: Gomory: 1 Explored 374 nodes (7450 simplex iterations) in 1.10 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%