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 113 quadratic objective terms Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 114 rows, 229 columns, 455 nonzeros Variable types: 0 continuous, 229 integer (228 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 133 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 30 31.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 23.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 16.00000 0.00000 100% - 0s 0 0 0.00000 0 9 16.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 3.00000 0.00000 100% - 0s 0 0 0.00000 0 4 3.00000 0.00000 100% - 0s 0 0 0.00000 0 5 3.00000 0.00000 100% - 0s 0 0 0.00000 0 5 3.00000 0.00000 100% - 0s 0 2 0.00000 0 5 3.00000 0.00000 100% - 0s * 15 7 11 2.0000000 0.00000 100% 2.9 0s Cutting planes: Cover: 179 MIR: 3 Explored 409 nodes (5144 simplex iterations) in 0.11 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%