Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:03:16 2012 Optimize a model with 201 rows, 599 columns and 599 nonzeros Model has 400 quadratic constraints Presolve removed 0 rows and 27 columns Presolve time: 2.33s Presolved: 201 rows, 572 columns, 572 nonzeros Variable types: 400 continuous, 172 integer (171 binary) Root relaxation: objective 0.000000e+00, 71 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 89.0000000 - - - 2s 0 0 0.00000 0 93 89.00000 0.00000 100% - 2s 0 0 0.00000 0 140 89.00000 0.00000 100% - 2s 0 0 0.00000 0 99 89.00000 0.00000 100% - 2s 0 2 0.00000 0 93 89.00000 0.00000 100% - 2s H 27 27 55.0000000 1.25714 97.7% 44.3 2s * 33 33 19 12.0000000 1.25714 89.5% 39.8 2s * 68 52 19 11.0000000 1.42105 87.1% 29.7 2s * 91 55 18 10.0000000 2.41176 75.9% 26.9 2s * 129 60 13 9.0000000 2.54545 71.7% 27.0 2s Cutting planes: Explored 483 nodes (14283 simplex iterations) in 2.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%