Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:43:00 2012 Optimize a model with 1 rows, 44 columns and 44 nonzeros Model has 99 quadratic objective terms Modified 43 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 44 columns, 44 nonzeros Presolved model has 142 quadratic objective terms Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 0.000000e+00, 47 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 43 53.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 2 0.00000 0 43 24.00000 0.00000 100% - 0s H 329 236 21.0000000 3.64761 82.6% 2.6 0s H 338 226 20.0000000 3.64761 81.8% 2.6 0s H 1091 478 19.0000000 7.95615 58.1% 2.7 0s Explored 14999 nodes (38963 simplex iterations) in 1.20 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%