Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:55 2012 Optimize a model with 127 rows, 321 columns and 321 nonzeros Model has 252 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.47s Presolved: 127 rows, 320 columns, 320 nonzeros Variable types: 252 continuous, 68 integer (67 binary) Root relaxation: objective 0.000000e+00, 34 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 17 74.00000 0.00000 100% - 1s 0 0 0.00000 0 20 74.00000 0.00000 100% - 1s 0 0 0.00000 0 57 74.00000 0.00000 100% - 1s 0 2 0.00000 0 57 74.00000 0.00000 100% - 1s * 36 35 21 22.0000000 5.42373 75.3% 34.0 1s * 301 92 8 20.0000000 10.16436 49.2% 23.7 1s Cutting planes: Explored 891 nodes (22882 simplex iterations) in 2.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%