Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:46 2012 Optimize a model with 121 rows, 307 columns and 307 nonzeros Model has 240 quadratic constraints Presolve time: 1.40s Presolved: 121 rows, 307 columns, 307 nonzeros Variable types: 240 continuous, 67 integer (67 binary) Root relaxation: objective 0.000000e+00, 33 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 53.0000000 - - - 1s 0 0 0.00000 0 34 53.00000 0.00000 100% - 1s 0 0 0.00000 0 65 53.00000 0.00000 100% - 1s 0 0 0.00000 0 64 53.00000 0.00000 100% - 1s 0 2 0.00000 0 64 53.00000 0.00000 100% - 1s * 28 28 15 20.0000000 2.61538 86.9% 40.8 1s * 214 73 9 18.0000000 8.00000 55.6% 29.9 1s Cutting planes: Gomory: 2 Explored 1025 nodes (23989 simplex iterations) in 2.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%