Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:48 2012 Optimize a model with 93 rows, 240 columns and 240 nonzeros Model has 184 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.07s Presolved: 93 rows, 239 columns, 239 nonzeros Variable types: 184 continuous, 55 integer (54 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 44.0000000 - - - 1s 0 0 0.00000 0 39 44.00000 0.00000 100% - 1s 0 0 0.21262 0 50 44.00000 0.21262 100% - 1s 0 2 0.27336 0 50 44.00000 0.27336 99.4% - 1s * 28 28 18 19.0000000 3.68293 80.6% 28.8 1s * 32 28 19 18.0000000 3.68293 79.5% 26.4 1s H 49 38 17.0000000 3.87879 77.2% 23.8 1s * 72 40 12 15.0000000 4.06383 72.9% 23.1 1s * 157 33 10 13.0000000 5.91304 54.5% 22.1 1s Cutting planes: Gomory: 1 Explored 311 nodes (7546 simplex iterations) in 1.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%