Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:22 2012 Optimize a model with 72 rows, 191 columns and 191 nonzeros Model has 142 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.83s Presolved: 72 rows, 190 columns, 190 nonzeros Variable types: 142 continuous, 48 integer (47 binary) Root relaxation: objective 0.000000e+00, 24 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 29 32.00000 0.00000 100% - 0s 0 0 0.08885 0 41 32.00000 0.08885 100% - 0s H 0 0 28.0000000 0.08885 100% - 0s 0 2 0.10714 0 41 28.00000 0.10714 100% - 0s * 15 15 13 10.0000000 3.12500 68.8% 22.5 0s * 31 16 12 7.0000000 3.74359 46.5% 15.4 0s Cutting planes: Gomory: 1 Explored 70 nodes (1506 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%