Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:45:19 2012 Optimize a model with 1 rows, 46 columns and 46 nonzeros Model has 114 quadratic objective terms Modified 46 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 46 columns, 46 nonzeros Presolved model has 160 quadratic objective terms Variable types: 0 continuous, 46 integer (46 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 48 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 46 63.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 2 2.45923 0 46 27.00000 2.45923 90.9% - 0s H 279 227 26.0000000 4.71762 81.9% 2.2 0s H 316 257 25.0000000 4.71762 81.1% 2.1 0s 62085 16255 cutoff 32 25.00000 19.45433 22.2% 2.4 5s 124003 17664 23.86790 30 27 25.00000 21.06295 15.7% 2.4 10s 186297 5436 23.36190 32 25 25.00000 22.87107 8.52% 2.4 15s Explored 195027 nodes (476353 simplex iterations) in 15.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%