Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:21 2012 Optimize a model with 1 rows, 28 columns and 28 nonzeros Model has 50 quadratic objective terms Presolve time: 0.00s Presolved: 51 rows, 78 columns, 178 nonzeros Variable types: 0 continuous, 78 integer (78 binary) Found heuristic solution: objective 26.0000000 Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 64 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 26 20.00000 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 48 18.00000 0.00000 100% - 0s 0 0 0.00000 0 14 18.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 12.00000 0.00000 100% - 0s H 114 51 10.0000000 0.00000 100% 4.3 0s Cutting planes: Cover: 94 Explored 232 nodes (2249 simplex iterations) in 0.04 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%