Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:28 2012 Optimize a model with 49 rows, 139 columns and 139 nonzeros Model has 96 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.56s Presolved: 49 rows, 136 columns, 136 nonzeros Variable types: 96 continuous, 40 integer (39 binary) Root relaxation: objective 0.000000e+00, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 25.0000000 - - - 0s 0 0 0.00000 0 11 25.00000 0.00000 100% - 0s 0 0 0.00000 0 16 25.00000 0.00000 100% - 0s 0 0 0.00000 0 12 25.00000 0.00000 100% - 0s 0 2 0.00000 0 10 25.00000 0.00000 100% - 0s H 8 8 8.0000000 3.21739 59.8% 30.0 0s * 15 13 9 6.0000000 3.21739 46.4% 18.7 0s * 22 7 4 5.0000000 3.28125 34.4% 15.8 0s Cutting planes: Explored 37 nodes (792 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%