Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:09 2012 Optimize a model with 32 rows, 87 columns and 87 nonzeros Model has 62 quadratic constraints Presolve time: 0.36s Presolved: 32 rows, 87 columns, 87 nonzeros Variable types: 62 continuous, 25 integer (25 binary) Root relaxation: objective 0.000000e+00, 12 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 16.0000000 - - - 0s 0 0 0.00000 0 11 16.00000 0.00000 100% - 0s 0 0 0.00000 0 14 16.00000 0.00000 100% - 0s 0 0 0.00000 0 3 16.00000 0.00000 100% - 0s 0 2 0.00000 0 3 16.00000 0.00000 100% - 0s * 9 9 8 5.0000000 2.33333 53.3% 14.1 0s * 18 6 4 4.0000000 2.50000 37.5% 9.9 0s Cutting planes: Explored 29 nodes (406 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%