Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:48:29 2012 Optimize a model with 1 rows, 47 columns and 47 nonzeros Model has 124 quadratic objective terms Modified 47 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 47 columns, 47 nonzeros Presolved model has 171 quadratic objective terms Variable types: 0 continuous, 47 integer (47 binary) Found heuristic solution: objective 59.0000000 Root relaxation: objective 0.000000e+00, 48 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 47 59.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 2 2.01469 0 47 26.00000 2.01469 92.3% - 0s H 324 257 25.0000000 5.46771 78.1% 2.2 0s H 477 325 24.0000000 6.79777 71.7% 2.2 0s Explored 43007 nodes (103086 simplex iterations) in 4.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%