Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:26 2012 Optimize a model with 135 rows, 338 columns and 338 nonzeros Model has 268 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.56s Presolved: 135 rows, 337 columns, 337 nonzeros Variable types: 268 continuous, 69 integer (68 binary) Root relaxation: objective 0.000000e+00, 35 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 64.0000000 - - - 1s 0 0 0.00000 0 23 64.00000 0.00000 100% - 1s 0 0 0.00000 0 38 64.00000 0.00000 100% - 1s 0 0 0.00000 0 38 64.00000 0.00000 100% - 1s 0 2 0.00000 0 38 64.00000 0.00000 100% - 1s * 28 28 21 30.0000000 3.35714 88.8% 29.6 1s * 86 55 16 24.0000000 4.74074 80.2% 25.3 1s * 1121 251 36 23.0000000 15.00000 34.8% 27.8 3s * 1386 115 38 22.0000000 18.19048 17.3% 26.0 3s Explored 1492 nodes (38013 simplex iterations) in 3.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%