Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:41 2012 Optimize a model with 1 rows, 56 columns and 56 nonzeros Model has 69 quadratic objective terms Presolve time: 0.00s Presolved: 70 rows, 125 columns, 263 nonzeros Variable types: 0 continuous, 125 integer (125 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 0.000000e+00, 100 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 25.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 18.00000 0.00000 100% - 0s 0 0 0.00000 0 19 18.00000 0.00000 100% - 0s 0 0 0.00000 0 13 18.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 13.00000 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 10 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 10.00000 0.00000 100% - 0s 0 0 0.00000 0 20 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 20 9.00000 0.00000 100% - 0s H 158 87 7.0000000 0.00000 100% 5.8 0s H 159 74 6.0000000 0.00000 100% 5.8 0s H 187 57 5.0000000 0.00000 100% 7.9 0s Cutting planes: Cover: 130 MIR: 4 Zero half: 2 Explored 263 nodes (5238 simplex iterations) in 0.08 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%