Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:43 2012 Optimize a model with 1 rows, 147 columns and 147 nonzeros Model has 130 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 131 rows, 249 columns, 509 nonzeros Variable types: 0 continuous, 249 integer (248 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 158 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 35.00000 0.00000 100% - 0s 0 0 0.00000 0 27 35.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 22.00000 0.00000 100% - 0s 0 0 0.00000 0 17 22.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 11.00000 0.00000 100% - 0s H 82 48 10.0000000 0.00000 100% 2.5 0s H 244 141 9.0000000 0.00000 100% 5.2 0s H 271 116 7.0000000 0.00000 100% 5.2 0s * 460 117 11 5.0000000 0.00000 100% 10.5 0s Cutting planes: Cover: 243 Explored 604 nodes (14143 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%