Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:37 2012 Optimize a model with 50 rows, 128 columns and 128 nonzeros Model has 98 quadratic constraints Presolve time: 0.57s Presolved: 50 rows, 128 columns, 128 nonzeros Variable types: 98 continuous, 30 integer (30 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 21.0000000 - - - 0s 0 0 0.00000 0 22 21.00000 0.00000 100% - 0s 0 0 0.38889 0 30 21.00000 0.38889 98.1% - 0s 0 0 0.38889 0 30 21.00000 0.38889 98.1% - 0s 0 2 0.50794 0 30 21.00000 0.50794 97.6% - 0s * 21 21 13 12.0000000 3.64000 69.7% 13.9 0s * 36 26 12 11.0000000 3.77778 65.7% 12.5 0s * 38 16 10 10.0000000 3.77778 62.2% 12.0 0s * 46 15 7 8.0000000 5.45455 31.8% 11.6 0s Cutting planes: Gomory: 1 Explored 74 nodes (1031 simplex iterations) in 0.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%