Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:06 2012 Optimize a model with 1 rows, 48 columns and 48 nonzeros Model has 69 quadratic objective terms Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 70 rows, 113 columns, 251 nonzeros Variable types: 0 continuous, 113 integer (112 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 88 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 23 29.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 21.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 17.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 13.00000 0.00000 100% - 0s 0 0 0.00000 0 20 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 20 10.00000 0.00000 100% - 0s Cutting planes: Gomory: 1 Cover: 131 MIR: 1 Explored 293 nodes (5433 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%