Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:46:24 2012 Optimize a model with 1 rows, 46 columns and 46 nonzeros Model has 110 quadratic objective terms Modified 46 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 46 columns, 46 nonzeros Presolved model has 156 quadratic objective terms Variable types: 0 continuous, 46 integer (46 binary) Found heuristic solution: objective 60.0000000 Root relaxation: objective 0.000000e+00, 47 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 46 60.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 2 1.74706 0 46 31.00000 1.74706 94.4% - 0s H 10 10 27.0000000 3.15397 88.3% 1.8 0s H 81 73 26.0000000 3.15764 87.9% 2.4 0s H 460 381 25.0000000 5.33448 78.7% 2.3 0s H 636 445 24.0000000 5.60465 76.6% 2.4 0s 63516 12182 19.66382 26 30 24.00000 19.66382 18.1% 2.4 5s Explored 112951 nodes (273473 simplex iterations) in 8.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%