Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:13 2012 Optimize a model with 1 rows, 43 columns and 43 nonzeros Model has 89 quadratic objective terms Modified 42 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 43 columns, 43 nonzeros Presolved model has 131 quadratic objective terms Variable types: 0 continuous, 43 integer (43 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 46 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 42 46.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 2 0.00000 0 42 20.00000 0.00000 100% - 0s H 51 42 19.0000000 2.30645 87.9% 3.0 0s H 54 43 18.0000000 2.30645 87.2% 2.9 0s H 1443 479 17.0000000 8.95128 47.3% 2.9 0s Explored 10342 nodes (29053 simplex iterations) in 0.80 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%