Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:47 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 184 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 185 rows, 336 columns, 704 nonzeros Variable types: 0 continuous, 336 integer (335 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 214 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 51 57.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 0.00000 0 52 44.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 39.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 44 27.00000 0.00000 100% - 0s 0 0 0.00000 0 38 27.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 2 0.00000 0 33 23.00000 0.00000 100% - 0s H 148 135 20.0000000 0.00000 100% 2.5 0s H 163 131 18.0000000 0.00000 100% 3.3 0s H 190 151 17.0000000 0.00000 100% 3.2 0s H 433 317 16.0000000 0.00000 100% 9.3 0s H 1265 742 15.0000000 0.00000 100% 7.0 0s 40805 27779 2.00000 31 38 15.00000 1.00000 93.3% 1.9 8s 40812 27784 7.00000 65 189 15.00000 1.87844 87.5% 1.9 10s H41031 26510 14.0000000 1.88527 86.5% 2.2 11s H41362 25135 13.0000000 2.74229 78.9% 2.7 13s *41419 23787 41 11.0000000 3.29857 70.0% 2.8 14s 41530 23753 cutoff 36 11.00000 4.13873 62.4% 2.9 15s Cutting planes: Gomory: 125 Cover: 262 MIR: 86 Flow cover: 159 Zero half: 273 Explored 42429 nodes (152734 simplex iterations) in 18.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%