Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:04 2012 Optimize a model with 1 rows, 34 columns and 34 nonzeros Model has 66 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 67 rows, 99 columns, 231 nonzeros Variable types: 0 continuous, 99 integer (98 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 77 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 25 23.00000 0.00000 100% - 0s 0 0 0.00000 0 51 23.00000 0.00000 100% - 0s 0 0 0.00000 0 25 23.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 2 0.00000 0 25 19.00000 0.00000 100% - 0s H 80 54 18.0000000 0.00000 100% 4.1 0s H 84 56 17.0000000 0.00000 100% 4.3 0s H 131 83 16.0000000 1.00000 93.8% 5.6 0s H 177 84 14.0000000 1.84211 86.8% 6.0 0s Cutting planes: Gomory: 1 Cover: 126 Explored 315 nodes (3795 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%