Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:30 2012 Optimize a model with 1 rows, 59 columns and 59 nonzeros Model has 102 quadratic objective terms Presolve time: 0.00s Presolved: 103 rows, 161 columns, 365 nonzeros Variable types: 0 continuous, 161 integer (161 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 139 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 29 40.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 47 29.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 27.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 23.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 18.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 17.00000 0.00000 100% - 0s 0 0 0.00000 0 31 17.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 2 0.00000 0 31 14.00000 0.00000 100% - 0s H 247 119 13.0000000 1.66667 87.2% 13.4 0s Cutting planes: Cover: 194 MIR: 4 Zero half: 4 Explored 491 nodes (12633 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%