Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:47 2012 Optimize a model with 1 rows, 20 columns and 20 nonzeros Model has 23 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 24 rows, 42 columns, 88 nonzeros Variable types: 0 continuous, 42 integer (41 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 0.000000e+00, 30 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 8.00000 0.00000 100% - 0s 0 0 0.00000 0 16 8.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 5 5.00000 0.00000 100% - 0s 0 0 0.00000 0 10 5.00000 0.00000 100% - 0s 0 0 0.00000 0 10 5.00000 0.00000 100% - 0s 0 2 0.00000 0 10 5.00000 0.00000 100% - 0s * 17 9 6 4.0000000 0.00000 100% 3.4 0s Cutting planes: Gomory: 1 Cover: 39 MIR: 2 Explored 57 nodes (402 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%