Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:28 2012 Optimize a model with 1 rows, 55 columns and 55 nonzeros Model has 66 quadratic objective terms Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 67 rows, 117 columns, 249 nonzeros Variable types: 0 continuous, 117 integer (116 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 0.000000e+00, 84 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 27 25.00000 0.00000 100% - 0s 0 0 0.00000 0 27 25.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s 0 0 0.00000 0 12 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 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 2 0.00000 0 8 8.00000 0.00000 100% - 0s H 189 101 7.0000000 0.00000 100% 6.2 0s Cutting planes: Cover: 128 MIR: 3 Zero half: 1 Explored 327 nodes (7691 simplex iterations) in 0.10 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%