Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:10 2012 Optimize a model with 1 rows, 43 columns and 43 nonzeros Model has 103 quadratic objective terms Modified 42 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 43 columns, 43 nonzeros Presolved model has 145 quadratic objective terms Variable types: 0 continuous, 43 integer (43 binary) Found heuristic solution: objective 55.0000000 Root relaxation: objective 0.000000e+00, 46 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 42 55.00000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 2 0.00000 0 42 24.00000 0.00000 100% - 0s H 174 138 23.0000000 3.88092 83.1% 2.5 0s H 1927 679 22.0000000 10.39305 52.8% 2.6 0s Explored 39466 nodes (102356 simplex iterations) in 3.01 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%