Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:44 2012 Optimize a model with 221 rows, 646 columns and 646 nonzeros Model has 440 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 2.56s Presolved: 221 rows, 623 columns, 623 nonzeros Variable types: 440 continuous, 183 integer (182 binary) Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 116.0000000 - - - 2s 0 0 0.00000 0 96 116.00000 0.00000 100% - 2s 0 0 0.00000 0 87 116.00000 0.00000 100% - 2s 0 0 0.00000 0 87 116.00000 0.00000 100% - 2s 0 2 0.00000 0 87 116.00000 0.00000 100% - 2s H 27 27 18.0000000 1.39474 92.3% 57.9 2s * 35 28 24 14.0000000 1.39474 90.0% 52.1 2s * 101 42 13 12.0000000 3.32000 72.3% 27.7 2s * 527 42 12 10.0000000 7.98425 20.2% 20.1 3s Cutting planes: Gomory: 1 Explored 582 nodes (13377 simplex iterations) in 3.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%