Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:54 2012 Optimize a model with 66 rows, 162 columns and 162 nonzeros Model has 130 quadratic constraints Presolve time: 0.76s Presolved: 66 rows, 162 columns, 162 nonzeros Variable types: 130 continuous, 32 integer (32 binary) Root relaxation: objective 0.000000e+00, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 32.0000000 - - - 0s 0 0 0.00000 0 16 32.00000 0.00000 100% - 0s 0 0 0.00000 0 32 32.00000 0.00000 100% - 0s 0 0 0.00000 0 31 32.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 2 0.00000 0 29 31.00000 0.00000 100% - 0s * 19 19 12 17.0000000 3.57143 79.0% 22.8 0s * 25 17 12 16.0000000 3.57143 77.7% 19.6 0s * 42 28 12 14.0000000 3.66667 73.8% 17.3 0s * 59 30 11 13.0000000 4.69231 63.9% 15.2 0s * 89 32 7 12.0000000 5.57143 53.6% 16.0 0s Cutting planes: Explored 195 nodes (3256 simplex iterations) in 0.84 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%