Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:43:12 2012 Optimize a model with 1 rows, 44 columns and 44 nonzeros Model has 105 quadratic objective terms Modified 44 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 44 columns, 44 nonzeros Presolved model has 149 quadratic objective terms Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 48.0000000 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 44 48.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 2 1.88967 0 44 27.00000 1.88967 93.0% - 0s H 12 12 26.0000000 2.91703 88.8% 1.8 0s H 459 334 24.0000000 4.90172 79.6% 2.5 0s H 632 430 22.0000000 5.46953 75.1% 2.5 0s Explored 44781 nodes (110086 simplex iterations) in 3.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%