Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:55 2012 Optimize a model with 1 rows, 166 columns and 166 nonzeros Model has 137 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 138 rows, 277 columns, 551 nonzeros Variable types: 0 continuous, 277 integer (276 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 182 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 43 38.00000 0.00000 100% - 0s 0 0 0.00000 0 27 38.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 28.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 16.00000 0.00000 100% - 0s 0 0 0.00000 0 19 16.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 14.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 2 0.00000 0 8 6.00000 0.00000 100% - 0s H 27 14 5.0000000 0.00000 100% 1.4 0s H 54 24 4.0000000 0.00000 100% 2.0 0s * 58 21 9 3.0000000 0.00000 100% 2.0 0s * 62 13 9 2.0000000 0.00000 100% 2.0 0s Cutting planes: Cover: 234 Explored 452 nodes (9615 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%