Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:57 2012 Optimize a model with 1 rows, 47 columns and 47 nonzeros Model has 67 quadratic objective terms Presolve time: 0.00s Presolved: 68 rows, 114 columns, 248 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 92 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 26 28.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 26.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 20.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 18.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 16.00000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s 0 2 0.00000 0 21 16.00000 0.00000 100% - 0s H 93 79 15.0000000 0.00000 100% 3.8 0s H 123 71 11.0000000 0.00000 100% 4.8 0s H 128 67 10.0000000 0.00000 100% 5.1 0s H 163 86 9.0000000 0.00000 100% 7.2 0s * 244 79 6 8.0000000 1.00000 87.5% 8.6 0s Cutting planes: Gomory: 1 Cover: 127 MIR: 3 Zero half: 1 Explored 347 nodes (5945 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%