Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:34 2012 Optimize a model with 125 rows, 320 columns and 320 nonzeros Model has 248 quadratic constraints Presolve time: 1.44s Presolved: 125 rows, 320 columns, 320 nonzeros Variable types: 248 continuous, 72 integer (72 binary) Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 62.0000000 - - - 1s 0 0 0.00000 0 32 62.00000 0.00000 100% - 1s 0 0 0.00000 0 37 62.00000 0.00000 100% - 1s 0 0 0.00000 0 2 62.00000 0.00000 100% - 1s 0 2 0.00000 0 2 62.00000 0.00000 100% - 1s * 36 35 29 23.0000000 3.00000 87.0% 25.1 1s H 54 30 20.0000000 3.22109 83.9% 25.9 1s * 58 32 17 19.0000000 3.22109 83.0% 26.9 1s * 281 113 10 18.0000000 9.24773 48.6% 24.5 1s Explored 1804 nodes (37716 simplex iterations) in 3.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%