Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:04 2012 Optimize a model with 1 rows, 21 columns and 21 nonzeros Model has 103 quadratic objective terms Modified 21 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 21 columns, 21 nonzeros Presolved model has 124 quadratic objective terms Variable types: 0 continuous, 21 integer (21 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 23 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 21 54.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 2 2.36544 0 21 38.00000 2.36544 93.8% - 0s Explored 5829 nodes (11998 simplex iterations) in 0.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%