Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:32 2012 Optimize a model with 1 rows, 45 columns and 45 nonzeros Model has 105 quadratic objective terms Modified 45 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 45 columns, 45 nonzeros Presolved model has 150 quadratic objective terms Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 47.0000000 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 45 47.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 2 0.92919 0 45 23.00000 0.92919 96.0% - 0s H 740 472 22.0000000 4.52676 79.4% 2.3 0s 59500 14197 19.00486 30 28 22.00000 16.92219 23.1% 2.4 5s 119426 12302 18.68526 30 27 22.00000 18.68494 15.1% 2.4 10s Explored 155917 nodes (370600 simplex iterations) in 13.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%