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 56 quadratic objective terms Modified 17 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 17 columns, 17 nonzeros Presolved model has 73 quadratic objective terms Variable types: 0 continuous, 17 integer (17 binary) Found heuristic solution: objective 30.0000000 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 30.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 2 2.35404 0 17 26.00000 2.35404 90.9% - 0s * 27 24 13 24.0000000 4.23535 82.4% 2.3 0s H 38 23 19.0000000 4.23834 77.7% 2.1 0s H 122 57 18.0000000 7.75846 56.9% 2.1 0s Explored 754 nodes (1636 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%