Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:48 2012 Optimize a model with 1 rows, 154 columns and 154 nonzeros Model has 125 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 126 rows, 248 columns, 498 nonzeros Variable types: 0 continuous, 248 integer (247 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 148 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 17 29.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s H 131 65 5.0000000 0.00000 100% 4.9 0s * 230 82 29 4.0000000 0.00000 100% 6.8 0s H 244 52 3.0000000 0.00000 100% 7.4 0s Cutting planes: Cover: 222 Explored 403 nodes (6245 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%