Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:23 2012 Optimize a model with 1 rows, 19 columns and 19 nonzeros Model has 93 quadratic objective terms Modified 19 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 19 columns, 19 nonzeros Presolved model has 112 quadratic objective terms Variable types: 0 continuous, 19 integer (19 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 20 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 19 51.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 2 2.36643 0 19 38.00000 2.36643 93.8% - 0s H 685 316 37.0000000 15.99819 56.8% 2.1 0s H 722 308 36.0000000 15.99819 55.6% 2.1 0s H 910 293 35.0000000 15.99819 54.3% 2.1 0s Explored 6493 nodes (13471 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%