Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:44 2012 Optimize a model with 1 rows, 19 columns and 19 nonzeros Model has 23 quadratic objective terms Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 24 rows, 39 columns, 85 nonzeros Variable types: 0 continuous, 39 integer (38 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 0.000000e+00, 27 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 5 9.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 5.00000 0.00000 100% - 0s 0 0 0.00000 0 18 5.00000 0.00000 100% - 0s 0 0 0.00000 0 5 5.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 2 0.00000 0 5 4.00000 0.00000 100% - 0s Cutting planes: Cover: 35 MIR: 4 Zero half: 3 Explored 47 nodes (249 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%