Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:20 2012 Optimize a model with 252 rows, 715 columns and 715 nonzeros Model has 502 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.93s Presolved: 252 rows, 690 columns, 690 nonzeros Variable types: 502 continuous, 188 integer (187 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 121.0000000 - - - 2s 0 0 0.00000 0 119 121.00000 0.00000 100% - 2s 0 0 0.00000 0 174 121.00000 0.00000 100% - 2s 0 0 0.00000 0 174 121.00000 0.00000 100% - 2s H 0 0 119.0000000 0.00000 100% - 3s 0 2 0.00000 0 174 119.00000 0.00000 100% - 3s * 36 36 20 20.0000000 2.51082 87.4% 41.2 3s * 103 57 25 18.0000000 4.86726 73.0% 30.9 3s Cutting planes: Gomory: 3 Explored 955 nodes (29159 simplex iterations) in 4.14 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%