Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:02 2012 Optimize a model with 99 rows, 249 columns and 249 nonzeros Model has 196 quadratic constraints Presolve time: 1.14s Presolved: 99 rows, 249 columns, 249 nonzeros Variable types: 196 continuous, 53 integer (53 binary) Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 65.0000000 - - - 1s 0 0 0.00000 0 48 65.00000 0.00000 100% - 1s 0 0 0.42810 0 51 65.00000 0.42810 99.3% - 1s H 0 0 60.0000000 0.42810 99.3% - 1s 0 2 0.45833 0 51 60.00000 0.45833 99.2% - 1s * 28 28 18 23.0000000 3.22222 86.0% 26.8 1s * 51 39 15 22.0000000 3.25000 85.2% 25.1 1s * 67 45 13 19.0000000 6.00000 68.4% 23.2 1s Cutting planes: Gomory: 1 Explored 527 nodes (11904 simplex iterations) in 1.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%