Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:52 2012 Optimize a model with 1 rows, 17 columns and 17 nonzeros Model has 67 quadratic objective terms Modified 17 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 17 columns, 17 nonzeros Presolved model has 84 quadratic objective terms Variable types: 0 continuous, 17 integer (17 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 19 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 17 33.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 2 2.37372 0 17 30.00000 2.37372 92.1% - 0s H 89 51 29.0000000 7.63898 73.7% 2.1 0s H 316 166 28.0000000 11.31152 59.6% 2.1 0s H 660 247 27.0000000 14.03637 48.0% 2.1 0s H 1016 217 26.0000000 15.51864 40.3% 2.1 0s Explored 2141 nodes (4545 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%