Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:56:03 2012 Optimize a model with 153 rows, 387 columns and 387 nonzeros Model has 304 quadratic constraints Presolve time: 1.78s Presolved: 153 rows, 387 columns, 387 nonzeros Variable types: 304 continuous, 83 integer (83 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 71.0000000 - - - 1s 0 0 0.00000 0 3 71.00000 0.00000 100% - 1s 0 0 0.00000 0 59 71.00000 0.00000 100% - 1s 0 0 0.00000 0 49 71.00000 0.00000 100% - 1s 0 2 0.00000 0 49 71.00000 0.00000 100% - 1s * 38 38 26 28.0000000 1.82828 93.5% 33.4 1s * 69 59 24 27.0000000 2.92793 89.2% 29.9 1s * 72 54 23 26.0000000 2.92793 88.7% 28.9 1s * 90 49 16 22.0000000 3.10031 85.9% 29.2 1s H 297 109 21.0000000 5.73846 72.7% 25.4 2s * 986 222 37 20.0000000 10.29787 48.5% 30.9 4s 1674 51 cutoff 35 20.00000 17.58209 12.1% 25.2 5s Explored 1765 nodes (44110 simplex iterations) in 5.07 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%