Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:42 2012 Optimize a model with 1 rows, 41 columns and 41 nonzeros Model has 85 quadratic objective terms Modified 41 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 41 columns, 41 nonzeros Presolved model has 126 quadratic objective terms Variable types: 0 continuous, 41 integer (41 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 43 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 41 43.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 2 0.66022 0 41 20.00000 0.66022 96.7% - 0s H 247 199 19.0000000 3.08604 83.8% 2.6 0s H 704 446 18.0000000 4.73627 73.7% 2.6 0s Explored 32202 nodes (83871 simplex iterations) in 2.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%