Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:39 2012 Optimize a model with 1 rows, 143 columns and 143 nonzeros Model has 104 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 105 rows, 219 columns, 427 nonzeros Variable types: 0 continuous, 219 integer (218 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 130 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 27 26.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 24.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 7 10.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 2 0.00000 0 4 2.00000 0.00000 100% - 0s * 323 9 19 1.0000000 0.00000 100% 5.7 0s Cutting planes: Cover: 144 Explored 324 nodes (2179 simplex iterations) in 0.07 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%