Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:51 2012 Optimize a model with 51 rows, 132 columns and 132 nonzeros Model has 100 quadratic constraints Presolve time: 0.59s Presolved: 51 rows, 132 columns, 132 nonzeros Variable types: 100 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 26.0000000 - - - 0s 0 0 0.00000 0 2 26.00000 0.00000 100% - 0s 0 0 0.00000 0 2 26.00000 0.00000 100% - 0s 0 0 0.00000 0 22 26.00000 0.00000 100% - 0s 0 2 0.00000 0 22 26.00000 0.00000 100% - 0s * 18 18 12 12.0000000 1.85714 84.5% 20.5 0s * 34 21 11 11.0000000 2.00000 81.8% 15.0 0s * 91 22 9 9.0000000 3.68750 59.0% 12.1 0s Cutting planes: Explored 169 nodes (2209 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%