Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:55:11 2012 Optimize a model with 1 rows, 48 columns and 48 nonzeros Model has 121 quadratic objective terms Modified 47 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 48 columns, 48 nonzeros Presolved model has 168 quadratic objective terms Variable types: 0 continuous, 48 integer (48 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 0.000000e+00, 51 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 47 64.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 2 0.00000 0 47 32.00000 0.00000 100% - 0s H 130 103 29.0000000 4.52655 84.4% 2.4 0s H 682 470 27.0000000 5.27465 80.5% 2.6 0s H 761 474 26.0000000 5.27465 79.7% 2.6 0s 55938 14764 20.13055 28 29 26.00000 20.13055 22.6% 2.5 5s 112047 14421 24.85209 30 28 26.00000 22.07284 15.1% 2.5 10s Explored 162285 nodes (398075 simplex iterations) in 14.48 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%