Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:16 2012 Optimize a model with 1 rows, 27 columns and 27 nonzeros Model has 48 quadratic objective terms Presolve time: 0.00s Presolved: 49 rows, 75 columns, 171 nonzeros Variable types: 0 continuous, 75 integer (75 binary) Found heuristic solution: objective 22.0000000 Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 61 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 21.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 12.00000 0.00000 100% - 0s 0 0 0.00000 0 11 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 2 0.00000 0 15 11.00000 0.00000 100% - 0s H 94 46 10.0000000 1.00000 90.0% 5.1 0s Cutting planes: Cover: 88 MIR: 2 Explored 171 nodes (1876 simplex iterations) in 0.03 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%