Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:28 2012 Optimize a model with 1 rows, 43 columns and 43 nonzeros Model has 111 quadratic objective terms Modified 43 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 43 columns, 43 nonzeros Presolved model has 154 quadratic objective terms Variable types: 0 continuous, 43 integer (43 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 0.000000e+00, 45 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 43 54.00000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 2 1.84312 0 43 27.00000 1.84312 93.2% - 0s H 81 74 26.0000000 3.35356 87.1% 2.2 0s H 376 301 25.0000000 4.66573 81.3% 2.3 0s H 764 480 24.0000000 5.99525 75.0% 2.5 0s Explored 59321 nodes (152261 simplex iterations) in 4.64 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%