Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:05 2012 Optimize a model with 142 rows, 306 columns and 306 nonzeros Model has 282 quadratic constraints Presolve time: 1.63s Presolved: 142 rows, 306 columns, 306 nonzeros Variable types: 282 continuous, 24 integer (24 binary) Root relaxation: objective 0.000000e+00, 12 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 22 74.00000 0.00000 100% - 1s 0 0 0.50000 0 24 74.00000 0.50000 99.3% - 1s 0 0 0.50000 0 24 74.00000 0.50000 99.3% - 1s 0 2 0.50000 0 24 74.00000 0.50000 99.3% - 1s * 27 27 14 59.0000000 8.06667 86.3% 39.3 1s H 52 39 55.0000000 8.07143 85.3% 36.5 1s 2876 581 51.00000 40 149 55.00000 36.83333 33.0% 28.4 5s Explored 6937 nodes (158726 simplex iterations) in 7.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.500000000091e+01, best bound 5.500000000091e+01, gap 0.0%