Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:39 2012 Optimize a model with 1 rows, 35 columns and 35 nonzeros Model has 36 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 37 rows, 69 columns, 141 nonzeros Variable types: 0 continuous, 69 integer (68 binary) Found heuristic solution: objective 12.0000000 Root relaxation: objective 0.000000e+00, 46 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 9 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 2 0.00000 0 8 5.00000 0.00000 100% - 0s H 49 19 4.0000000 0.00000 100% 3.6 0s * 107 15 7 3.0000000 1.00000 66.7% 6.0 0s Cutting planes: Cover: 62 Explored 123 nodes (970 simplex iterations) in 0.02 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%