Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:21 2012 Optimize a model with 1 rows, 28 columns and 28 nonzeros Model has 37 quadratic objective terms Presolve time: 0.00s Presolved: 38 rows, 65 columns, 139 nonzeros Variable types: 0 continuous, 65 integer (65 binary) Found heuristic solution: objective 18.0000000 Found heuristic solution: objective 14.0000000 Root relaxation: objective 0.000000e+00, 53 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 8 14.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 7.00000 0.00000 100% - 0s 0 0 0.00000 0 5 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 0 0.00000 0 6 5.00000 0.00000 100% - 0s 0 0 0.00000 0 12 5.00000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 2 0.00000 0 7 5.00000 0.00000 100% - 0s Cutting planes: Cover: 69 Explored 111 nodes (917 simplex iterations) in 0.02 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%