Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:06 2012 Optimize a model with 1 rows, 18 columns and 18 nonzeros Model has 90 quadratic objective terms Modified 18 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 18 columns, 18 nonzeros Presolved model has 108 quadratic objective terms Variable types: 0 continuous, 18 integer (18 binary) Found heuristic solution: objective 43.0000000 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 18 43.00000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 2 2.40202 0 18 41.00000 2.40202 94.1% - 0s * 26 22 15 40.0000000 5.62555 85.9% 2.0 0s H 45 39 39.0000000 5.66882 85.5% 2.1 0s * 223 153 11 37.0000000 10.57685 71.4% 2.1 0s * 363 205 10 35.0000000 13.85543 60.4% 2.1 0s Explored 4064 nodes (8549 simplex iterations) in 0.25 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%