Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:03:10 2012 Optimize a model with 1 rows, 26 columns and 26 nonzeros Model has 166 quadratic objective terms Modified 26 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 26 columns, 26 nonzeros Presolved model has 192 quadratic objective terms Variable types: 0 continuous, 26 integer (26 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 27 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 26 82.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s 0 2 4.46710 0 26 69.00000 4.46710 93.5% - 0s H 321 269 68.0000000 13.99948 79.4% 2.0 0s * 711 492 30 66.0000000 17.39325 73.6% 2.1 0s H 1277 611 65.0000000 23.82018 63.4% 2.1 0s 75854 15780 56.57980 26 11 65.00000 52.36602 19.4% 2.0 5s 156473 10032 62.97034 28 9 65.00000 58.13306 10.6% 2.0 10s Explored 183782 nodes (371872 simplex iterations) in 11.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.500000000000e+01, best bound 6.500000000000e+01, gap 0.0%