Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:03:59 2012 Optimize a model with 113 rows, 273 columns and 273 nonzeros Model has 224 quadratic constraints Presolve time: 1.32s Presolved: 113 rows, 273 columns, 273 nonzeros Variable types: 224 continuous, 49 integer (49 binary) Root relaxation: objective 0.000000e+00, 24 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 56.0000000 - - - 1s 0 0 0.00000 0 5 56.00000 0.00000 100% - 1s 0 0 0.00000 0 48 56.00000 0.00000 100% - 1s 0 0 0.00000 0 47 56.00000 0.00000 100% - 1s 0 2 0.00000 0 47 56.00000 0.00000 100% - 1s * 41 39 23 25.0000000 2.82353 88.7% 24.7 1s * 114 85 12 24.0000000 5.00000 79.2% 25.0 1s * 192 110 12 23.0000000 7.09091 69.2% 25.5 1s Cutting planes: Explored 1664 nodes (37697 simplex iterations) in 2.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%