Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:10 2012 Optimize a model with 1 rows, 145 columns and 145 nonzeros Model has 114 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 115 rows, 234 columns, 462 nonzeros Variable types: 0 continuous, 234 integer (233 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 147 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 37 36.00000 0.00000 100% - 0s 0 0 0.00000 0 24 36.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 21.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 13.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 12.00000 0.00000 100% - 0s 0 0 0.00000 0 7 12.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 6.00000 0.00000 100% - 0s 0 0 0.00000 0 13 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 2 0.00000 0 11 5.00000 0.00000 100% - 0s * 19 15 13 4.0000000 0.00000 100% 1.6 0s * 354 86 17 3.0000000 0.00000 100% 4.1 0s H 479 66 2.0000000 0.00000 100% 5.8 0s Cutting planes: Cover: 184 Explored 599 nodes (6761 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%