Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:43 2012 Optimize a model with 1 rows, 16 columns and 16 nonzeros Model has 56 quadratic objective terms Modified 16 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 16 columns, 16 nonzeros Presolved model has 72 quadratic objective terms Variable types: 0 continuous, 16 integer (16 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 18 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 16 30.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 2 2.38820 0 16 22.00000 2.38820 89.1% - 0s * 351 108 8 21.0000000 10.03859 52.2% 2.2 0s Explored 1536 nodes (3363 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%