Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:25 2012 Optimize a model with 1 rows, 50 columns and 50 nonzeros Model has 88 quadratic objective terms Presolve time: 0.00s Presolved: 89 rows, 138 columns, 314 nonzeros Variable types: 0 continuous, 138 integer (138 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 105 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 33 45.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 33.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 26.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 18.00000 0.00000 100% - 0s 0 0 0.00000 0 31 18.00000 0.00000 100% - 0s 0 0 0.00000 0 31 18.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 2 0.00000 0 31 17.00000 0.00000 100% - 0s * 243 141 22 16.0000000 1.00000 93.8% 7.8 0s * 260 137 20 15.0000000 1.00000 93.3% 8.0 0s * 557 86 12 14.0000000 8.00000 42.9% 17.8 0s Cutting planes: Cover: 166 MIR: 5 Zero half: 4 Explored 656 nodes (12125 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%