Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:57:25 2012 Optimize a model with 1 rows, 24 columns and 24 nonzeros Model has 135 quadratic objective terms Modified 24 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 24 columns, 24 nonzeros Presolved model has 159 quadratic objective terms Variable types: 0 continuous, 24 integer (24 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 26 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 24 68.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 2 3.39507 0 24 58.00000 3.39507 94.1% - 0s H 78 58 57.0000000 10.96779 80.8% 2.0 0s H 423 314 56.0000000 15.09792 73.0% 2.1 0s H 528 377 55.0000000 15.51033 71.8% 2.1 0s H 858 511 54.0000000 17.12658 68.3% 2.1 0s H 1452 590 53.0000000 23.06599 56.5% 2.1 0s Explored 74842 nodes (154527 simplex iterations) in 3.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%