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 20 quadratic objective terms Presolve time: 0.00s Presolved: 21 rows, 40 columns, 80 nonzeros Variable types: 0 continuous, 40 integer (40 binary) Found heuristic solution: objective 10.0000000 Found heuristic solution: objective 6.0000000 Root relaxation: objective 0.000000e+00, 26 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 4 6.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 4.00000 0.00000 100% - 0s 0 0 0.00000 0 17 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 3.00000 0.00000 100% - 0s H 36 6 2.0000000 0.00000 100% 3.3 0s Cutting planes: Cover: 31 Explored 53 nodes (254 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%