Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:52 2012 Optimize a model with 1 rows, 151 columns and 151 nonzeros Model has 122 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 123 rows, 245 columns, 489 nonzeros Variable types: 0 continuous, 245 integer (244 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 147 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 29 26.00000 0.00000 100% - 0s 0 0 0.00000 0 20 26.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 9.00000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 8.00000 0.00000 100% - 0s H 81 56 7.0000000 0.00000 100% 4.2 0s * 316 154 20 6.0000000 0.00000 100% 7.6 0s H 440 171 5.0000000 0.00000 100% 9.9 0s * 446 92 9 3.0000000 0.00000 100% 10.1 0s Cutting planes: Cover: 217 Explored 563 nodes (10270 simplex iterations) in 0.19 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%