Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:48 2012 Optimize a model with 156 rows, 384 columns and 384 nonzeros Model has 310 quadratic constraints Presolve time: 1.81s Presolved: 156 rows, 384 columns, 384 nonzeros Variable types: 310 continuous, 74 integer (74 binary) Root relaxation: objective 0.000000e+00, 37 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 66.0000000 - - - 1s 0 0 0.00000 0 63 66.00000 0.00000 100% - 1s 0 0 0.48114 0 73 66.00000 0.48114 99.3% - 1s 0 2 0.48140 0 73 66.00000 0.48140 99.3% - 1s H 51 51 37.0000000 3.59722 90.3% 27.9 1s H 82 56 31.0000000 4.86842 84.3% 25.0 1s H 497 243 29.0000000 13.80356 52.4% 22.2 2s * 551 223 17 27.0000000 13.96364 48.3% 22.1 2s 1687 314 cutoff 32 27.00000 17.33333 35.8% 26.4 5s * 1994 324 47 26.0000000 18.61538 28.4% 25.1 5s Explored 3228 nodes (71078 simplex iterations) in 6.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%