Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:16 2012 Optimize a model with 1 rows, 49 columns and 49 nonzeros Model has 69 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 70 rows, 116 columns, 254 nonzeros Variable types: 0 continuous, 116 integer (115 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 94 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 22 23.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 20.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 14.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 13.00000 0.00000 100% - 0s 0 0 0.00000 0 11 13.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 11.00000 0.00000 100% - 0s 0 0 0.00000 0 23 11.00000 0.00000 100% - 0s 0 2 0.00000 0 18 11.00000 0.00000 100% - 0s * 239 95 17 10.0000000 0.00000 100% 6.9 0s H 302 88 9.0000000 0.00000 100% 9.1 0s * 461 9 11 8.0000000 7.00000 12.5% 16.1 0s Cutting planes: Cover: 132 MIR: 1 Explored 471 nodes (7785 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%