Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:39 2012 Optimize a model with 104 rows, 249 columns and 249 nonzeros Model has 206 quadratic constraints Presolve time: 1.20s Presolved: 104 rows, 249 columns, 249 nonzeros Variable types: 206 continuous, 43 integer (43 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 57.0000000 - - - 1s 0 0 0.00000 0 21 57.00000 0.00000 100% - 1s 0 0 0.00000 0 35 57.00000 0.00000 100% - 1s 0 0 0.00000 0 35 57.00000 0.00000 100% - 1s 0 2 0.00000 0 35 57.00000 0.00000 100% - 1s * 28 28 19 25.0000000 4.14198 83.4% 27.1 1s H 113 71 24.0000000 7.46154 68.9% 23.5 1s * 938 202 34 23.0000000 14.50000 37.0% 23.1 2s Explored 1310 nodes (26856 simplex iterations) in 2.28 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%