Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:36 2012 Optimize a model with 1 rows, 156 columns and 156 nonzeros Model has 105 quadratic objective terms Presolve removed 0 rows and 37 columns Presolve time: 0.00s Presolved: 106 rows, 224 columns, 434 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 0.000000e+00, 132 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 22 19.00000 0.00000 100% - 0s 0 0 0.00000 0 14 19.00000 0.00000 100% - 0s 0 0 0.00000 0 13 19.00000 0.00000 100% - 0s 0 0 0.00000 0 8 19.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 8.00000 0.00000 100% - 0s 0 0 0.00000 0 16 8.00000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 10 7.00000 0.00000 100% - 0s H 14 14 5.0000000 0.00000 100% 1.4 0s H 27 11 4.0000000 0.00000 100% 1.8 0s * 45 12 21 3.0000000 0.00000 100% 1.6 0s H 101 16 2.0000000 0.00000 100% 1.9 0s * 102 9 6 1.0000000 0.00000 100% 1.9 0s Cutting planes: Cover: 54 MIR: 1 Explored 103 nodes (553 simplex iterations) in 0.03 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%