Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:00 2012 Optimize a model with 78 rows, 171 columns and 171 nonzeros Model has 154 quadratic constraints Presolve time: 0.90s Presolved: 78 rows, 171 columns, 171 nonzeros Variable types: 154 continuous, 17 integer (17 binary) Root relaxation: objective 0.000000e+00, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 39.0000000 - - - 0s 0 0 0.00000 0 14 39.00000 0.00000 100% - 0s 0 0 0.38655 0 17 39.00000 0.38655 99.0% - 0s 0 2 0.40816 0 17 39.00000 0.40816 99.0% - 0s * 22 22 12 35.0000000 5.37143 84.7% 19.0 0s * 43 33 11 33.0000000 5.42857 83.5% 18.1 0s * 46 32 13 32.0000000 5.42857 83.0% 17.2 0s * 465 34 10 31.0000000 27.00000 12.9% 16.4 1s Cutting planes: Gomory: 1 Explored 513 nodes (8230 simplex iterations) in 1.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%