Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:14 2012 Optimize a model with 1 rows, 35 columns and 35 nonzeros Model has 71 quadratic objective terms Presolve time: 0.00s Presolved: 72 rows, 106 columns, 248 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 81 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 33 26.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 24.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 22.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 21.00000 0.00000 100% - 0s 0 0 0.00000 0 24 21.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 20.00000 0.00000 100% - 0s 0 0 0.00000 0 20 20.00000 0.00000 100% - 0s 0 0 0.00000 0 27 20.00000 0.00000 100% - 0s 0 0 0.00000 0 27 20.00000 0.00000 100% - 0s 0 2 0.00000 0 27 20.00000 0.00000 100% - 0s H 45 39 19.0000000 0.00000 100% 4.2 0s H 126 90 18.0000000 1.00000 94.4% 7.4 0s H 158 99 17.0000000 1.00000 94.1% 8.3 0s * 240 99 16 16.0000000 2.07143 87.1% 10.3 0s * 297 85 7 15.0000000 3.33333 77.8% 11.1 0s Cutting planes: Gomory: 1 Cover: 134 MIR: 12 Zero half: 7 Explored 499 nodes (7228 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%