Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:50 2012 Optimize a model with 1 rows, 21 columns and 21 nonzeros Model has 24 quadratic objective terms Presolve time: 0.00s Presolved: 25 rows, 45 columns, 93 nonzeros Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 0.000000e+00, 32 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 7 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s 0 0 0.00000 0 18 6.00000 0.00000 100% - 0s 0 0 0.00000 0 15 6.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 5 4.00000 0.00000 100% - 0s 0 0 0.00000 0 8 4.00000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 2 0.00000 0 4 4.00000 0.00000 100% - 0s * 68 15 9 3.0000000 1.00000 66.7% 3.6 0s Cutting planes: Cover: 37 MIR: 4 Zero half: 2 Explored 86 nodes (475 simplex iterations) in 0.02 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%