Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:46 2012 Optimize a model with 1 rows, 41 columns and 41 nonzeros Model has 90 quadratic objective terms Modified 40 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 41 columns, 41 nonzeros Presolved model has 130 quadratic objective terms Variable types: 0 continuous, 41 integer (41 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 44 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 40 54.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 2 0.00000 0 40 19.00000 0.00000 100% - 0s Explored 25431 nodes (67278 simplex iterations) in 1.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%