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 60 quadratic objective terms Modified 16 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 16 columns, 16 nonzeros Presolved model has 76 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 29.0000000 0.00000 100% - 0s 0 2 2.71547 0 16 29.00000 2.71547 90.6% - 0s H 3 3 26.0000000 3.74387 85.6% 1.3 0s H 11 11 24.0000000 3.74387 84.4% 1.8 0s H 608 167 23.0000000 13.37386 41.9% 2.1 0s Explored 1377 nodes (2892 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%