Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:10:05 2012 Optimize a model with 1 rows, 27 columns and 27 nonzeros Model has 181 quadratic objective terms Modified 27 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 27 columns, 27 nonzeros Presolved model has 208 quadratic objective terms Variable types: 0 continuous, 27 integer (27 binary) Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 29 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 27 83.00000 0.00000 100% - 0s H 0 0 81.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 2 4.11431 0 27 76.00000 4.11431 94.6% - 0s H 2 2 75.0000000 4.77163 93.6% 1.0 0s H 318 253 72.0000000 14.27078 80.2% 2.0 0s H 2212 942 71.0000000 30.00751 57.7% 2.1 0s H26410 10083 70.0000000 47.10729 32.7% 2.0 1s 83542 20772 64.31505 26 10 70.00000 54.21011 22.6% 2.0 5s 172107 24416 64.46731 25 11 70.00000 58.90244 15.9% 2.0 10s 257307 14761 68.68551 27 9 70.00000 62.85620 10.2% 2.0 15s Explored 297093 nodes (606917 simplex iterations) in 17.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+01, best bound 7.000000000000e+01, gap 0.0%