Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:49:49 2012 Optimize a model with 154 rows, 388 columns and 388 nonzeros Model has 306 quadratic constraints Presolve time: 1.79s Presolved: 154 rows, 388 columns, 388 nonzeros Variable types: 306 continuous, 82 integer (82 binary) Root relaxation: objective 0.000000e+00, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 74.0000000 - - - 1s 0 0 0.00000 0 60 74.00000 0.00000 100% - 1s 0 0 0.35417 0 78 74.00000 0.35417 100% - 1s 0 2 0.39583 0 78 74.00000 0.39583 99.5% - 1s * 25 25 16 27.0000000 2.34188 91.3% 44.4 1s * 165 100 16 25.0000000 7.00000 72.0% 28.4 1s * 594 185 19 24.0000000 12.55814 47.7% 27.2 2s 2677 394 23.55556 35 218 24.00000 18.30769 23.7% 23.4 5s * 3370 302 40 23.0000000 19.33333 15.9% 22.1 5s Explored 3875 nodes (81966 simplex iterations) in 5.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%