Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:20 2012 Optimize a model with 67 rows, 167 columns and 167 nonzeros Model has 132 quadratic constraints Presolve time: 0.77s Presolved: 67 rows, 167 columns, 167 nonzeros Variable types: 132 continuous, 35 integer (35 binary) Root relaxation: objective 0.000000e+00, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 28.0000000 - - - 0s 0 0 0.00000 0 3 28.00000 0.00000 100% - 0s 0 0 0.00000 0 3 28.00000 0.00000 100% - 0s 0 0 0.00000 0 3 28.00000 0.00000 100% - 0s 0 2 0.00000 0 26 28.00000 0.00000 100% - 0s * 19 19 15 20.0000000 0.69231 96.5% 19.9 0s * 20 18 15 17.0000000 0.69231 95.9% 19.0 0s * 31 21 8 13.0000000 1.00000 92.3% 19.7 0s * 304 20 7 12.0000000 10.00000 16.7% 14.7 0s Cutting planes: Gomory: 1 Explored 334 nodes (4779 simplex iterations) in 0.88 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%