Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:33:17 2012 Optimize a model with 148 rows, 371 columns and 371 nonzeros Model has 294 quadratic constraints Presolve time: 1.71s Presolved: 148 rows, 371 columns, 371 nonzeros Variable types: 294 continuous, 77 integer (77 binary) Root relaxation: objective 0.000000e+00, 38 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 61 66.00000 0.00000 100% - 1s 0 0 0.00000 0 61 66.00000 0.00000 100% - 1s 0 0 0.00000 0 60 66.00000 0.00000 100% - 1s 0 2 0.00000 0 60 66.00000 0.00000 100% - 1s H 46 46 33.0000000 3.37705 89.8% 31.8 1s * 46 46 27 31.0000000 3.37705 89.1% 31.8 1s * 74 62 18 26.0000000 3.60000 86.2% 31.9 1s * 76 56 17 25.0000000 3.60000 85.6% 31.8 1s H 277 137 23.0000000 5.86312 74.5% 24.6 2s H 2484 250 22.0000000 17.64407 19.8% 21.9 4s Explored 2947 nodes (62412 simplex iterations) in 4.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%