Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:34 2012 Optimize a model with 82 rows, 198 columns and 198 nonzeros Model has 162 quadratic constraints Presolve time: 0.95s Presolved: 82 rows, 198 columns, 198 nonzeros Variable types: 162 continuous, 36 integer (36 binary) Root relaxation: objective 0.000000e+00, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 39.0000000 - - - 0s 0 0 0.00000 0 36 39.00000 0.00000 100% - 0s 0 0 0.69231 0 36 39.00000 0.69231 98.2% - 0s 0 2 0.98901 0 36 39.00000 0.98901 97.5% - 0s * 29 29 17 27.0000000 3.94083 85.4% 24.1 0s * 45 27 10 20.0000000 4.03077 79.8% 22.5 1s * 63 33 10 19.0000000 6.03030 68.3% 22.6 1s Cutting planes: Gomory: 1 Explored 514 nodes (10088 simplex iterations) in 1.17 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%