Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:14 2012 Optimize a model with 1 rows, 43 columns and 43 nonzeros Model has 82 quadratic objective terms Presolve time: 0.00s Presolved: 83 rows, 125 columns, 289 nonzeros Variable types: 0 continuous, 125 integer (125 binary) Found heuristic solution: objective 46.0000000 Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 106 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 35 36.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.00000 0 38 31.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 27.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 24.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 23.00000 0.00000 100% - 0s 0 0 0.00000 0 28 23.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 21.00000 0.00000 100% - 0s 0 0 0.00000 0 30 21.00000 0.00000 100% - 0s 0 0 0.00000 0 28 21.00000 0.00000 100% - 0s 0 2 0.00000 0 28 21.00000 0.00000 100% - 0s H 176 113 19.0000000 0.00000 100% 6.9 0s H 218 119 18.0000000 1.00000 94.4% 8.8 0s H 219 110 17.0000000 1.00000 94.1% 8.8 0s * 224 103 11 16.0000000 1.00000 93.8% 8.7 0s Cutting planes: Gomory: 3 Cover: 159 MIR: 1 Zero half: 1 Explored 631 nodes (11743 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%