Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:23:54 2012 Optimize a model with 1 rows, 140 columns and 140 nonzeros Model has 99 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 100 rows, 212 columns, 410 nonzeros Variable types: 0 continuous, 212 integer (211 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 0.000000e+00, 128 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 20 22.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 19.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 6.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 4.00000 0.00000 100% - 0s 0 0 0.00000 0 12 4.00000 0.00000 100% - 0s 0 0 0.00000 0 10 4.00000 0.00000 100% - 0s 0 0 0.00000 0 13 4.00000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 2 0.00000 0 5 3.00000 0.00000 100% - 0s * 52 16 18 2.0000000 0.00000 100% 2.6 0s * 96 8 27 1.0000000 0.00000 100% 3.7 0s Cutting planes: Cover: 49 Explored 97 nodes (798 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+00, best bound 1.000000000000e+00, gap 0.0%