Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:24 2012 Optimize a model with 1 rows, 36 columns and 36 nonzeros Model has 58 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 59 rows, 93 columns, 209 nonzeros Variable types: 0 continuous, 93 integer (92 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 74 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 21 21.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 17.00000 0.00000 100% - 0s 0 0 0.00000 0 18 17.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 13.00000 0.00000 100% - 0s H 118 70 12.0000000 0.00000 100% 5.8 0s H 128 73 11.0000000 0.00000 100% 6.0 0s Cutting planes: Gomory: 1 Cover: 112 Explored 271 nodes (3595 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%