Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:00:09 2012 Optimize a model with 220 rows, 633 columns and 633 nonzeros Model has 438 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.56s Presolved: 220 rows, 614 columns, 614 nonzeros Variable types: 438 continuous, 176 integer (175 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 0 103.0000000 - - - 2s 0 0 0.00000 0 4 103.00000 0.00000 100% - 2s 0 0 0.00000 0 2 103.00000 0.00000 100% - 2s 0 0 0.00000 0 2 103.00000 0.00000 100% - 2s 0 2 0.00000 0 61 103.00000 0.00000 100% - 2s H 38 38 24.0000000 0.00000 100% 39.2 2s H 134 94 22.0000000 2.14706 90.2% 21.2 2s * 134 86 48 21.0000000 2.14706 89.8% 21.2 2s * 161 37 21 13.0000000 2.35659 81.9% 23.3 2s Cutting planes: Gomory: 1 Explored 1020 nodes (20325 simplex iterations) in 3.44 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%