Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:55 2012 Optimize a model with 1 rows, 33 columns and 33 nonzeros Model has 53 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 54 rows, 85 columns, 191 nonzeros Variable types: 0 continuous, 85 integer (84 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 0.000000e+00, 76 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 25 22.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 44 19.00000 0.00000 100% - 0s 0 0 0.00000 0 19 19.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 16 15.00000 0.00000 100% - 0s H 18 18 12.0000000 0.00000 100% 2.2 0s H 65 40 11.0000000 0.00000 100% 2.7 0s * 202 60 7 10.0000000 1.66667 83.3% 7.2 0s Cutting planes: Cover: 103 Explored 304 nodes (3316 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%