Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:48 2012 Optimize a model with 1 rows, 46 columns and 46 nonzeros Model has 62 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 63 rows, 107 columns, 231 nonzeros Variable types: 0 continuous, 107 integer (106 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 0.000000e+00, 81 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 27.00000 0.00000 100% - 0s H 0 0 20.0000000 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 25 14.00000 0.00000 100% - 0s 0 0 0.00000 0 19 14.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 13.00000 0.00000 100% - 0s 0 0 0.00000 0 10 13.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 9.00000 0.00000 100% - 0s 0 0 0.00000 0 16 9.00000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 8.00000 0.00000 100% - 0s H 27 27 7.0000000 0.00000 100% 1.8 0s Cutting planes: Cover: 117 MIR: 2 Explored 274 nodes (3442 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%