Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:36 2012 Optimize a model with 1 rows, 37 columns and 37 nonzeros Model has 77 quadratic objective terms Modified 37 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 37 columns, 37 nonzeros Presolved model has 114 quadratic objective terms Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 39 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 37 46.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 2 1.15382 0 37 19.00000 1.15382 93.9% - 0s H 108 84 18.0000000 2.63300 85.4% 2.3 0s H 628 386 17.0000000 4.61632 72.8% 2.5 0s Explored 10005 nodes (27961 simplex iterations) in 0.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%