Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:57:13 2012 Optimize a model with 1 rows, 24 columns and 24 nonzeros Model has 139 quadratic objective terms Modified 24 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 24 columns, 24 nonzeros Presolved model has 163 quadratic objective terms Variable types: 0 continuous, 24 integer (24 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 26 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 24 68.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s 0 2 3.11987 0 24 61.00000 3.11987 94.9% - 0s H 6 6 58.0000000 7.04545 87.9% 1.7 0s H 247 190 57.0000000 11.56036 79.7% 2.0 0s H 720 438 56.0000000 16.98693 69.7% 2.0 0s H 792 444 55.0000000 16.98693 69.1% 2.0 0s H 1030 455 53.0000000 20.05897 62.2% 2.0 0s Explored 52170 nodes (104736 simplex iterations) in 2.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%