Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:56 2012 Optimize a model with 1 rows, 44 columns and 44 nonzeros Model has 93 quadratic objective terms Modified 43 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 44 columns, 44 nonzeros Presolved model has 136 quadratic objective terms Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 44.0000000 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 44.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 25.0000000 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 22 22 23.0000000 2.44024 89.4% 2.7 0s H 27 27 22.0000000 2.44024 88.9% 2.7 0s H 330 261 21.0000000 4.35575 79.3% 2.8 0s H 684 457 20.0000000 4.92589 75.4% 2.9 0s Explored 45055 nodes (122001 simplex iterations) in 3.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%