Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:54 2012 Optimize a model with 1 rows, 22 columns and 22 nonzeros Model has 25 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 26 rows, 46 columns, 96 nonzeros Variable types: 0 continuous, 46 integer (45 binary) Found heuristic solution: objective 10.0000000 Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 28 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 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s H 23 15 5.0000000 0.00000 100% 3.0 0s H 27 13 4.0000000 0.00000 100% 3.0 0s * 47 11 4 3.0000000 0.00000 100% 4.3 0s Cutting planes: Cover: 47 Explored 67 nodes (442 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%