Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:40 2012 Optimize a model with 1 rows, 20 columns and 20 nonzeros Model has 91 quadratic objective terms Modified 20 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 20 columns, 20 nonzeros Presolved model has 111 quadratic objective terms Variable types: 0 continuous, 20 integer (20 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 0.000000e+00, 22 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 20 43.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 2 2.62779 0 20 40.00000 2.62779 93.4% - 0s H 8 8 38.0000000 4.97287 86.9% 1.8 0s H 88 62 36.0000000 7.97699 77.8% 2.0 0s H 6881 935 35.0000000 28.48264 18.6% 2.0 0s Explored 10122 nodes (20612 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%