Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 1 rows, 41 columns and 41 nonzeros Model has 48 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 49 rows, 88 columns, 184 nonzeros Variable types: 0 continuous, 88 integer (87 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 0.000000e+00, 61 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 18 22.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s 0 0 0.00000 0 10 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 8 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s * 202 54 12 5.0000000 0.00000 100% 5.5 0s Cutting planes: Cover: 90 Explored 265 nodes (2460 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%