Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:15 2012 Optimize a model with 1 rows, 54 columns and 54 nonzeros Model has 65 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 66 rows, 117 columns, 247 nonzeros Variable types: 0 continuous, 117 integer (116 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 85 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 20 21.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 17.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 16.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 9.00000 0.00000 100% - 0s 0 0 0.00000 0 17 9.00000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s 0 0 0.00000 0 11 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 8 8.00000 0.00000 100% - 0s H 83 31 7.0000000 0.00000 100% 2.2 0s * 229 71 10 6.0000000 0.00000 100% 7.0 0s Cutting planes: Gomory: 3 Cover: 125 Explored 310 nodes (6041 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%