Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:13 2012 Optimize a model with 1 rows, 159 columns and 159 nonzeros Model has 108 quadratic objective terms Presolve removed 0 rows and 43 columns Presolve time: 0.00s Presolved: 109 rows, 224 columns, 440 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 119 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 25 20.00000 0.00000 100% - 0s 0 0 0.00000 0 18 20.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 16.00000 0.00000 100% - 0s 0 0 0.00000 0 12 16.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 9.00000 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 10 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 0 0.00000 0 10 5.00000 0.00000 100% - 0s 0 0 0.00000 0 9 5.00000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 0 0.00000 0 11 5.00000 0.00000 100% - 0s 0 0 0.00000 0 10 5.00000 0.00000 100% - 0s 0 2 0.00000 0 9 5.00000 0.00000 100% - 0s H 86 36 4.0000000 0.00000 100% 1.4 0s * 109 43 17 3.0000000 0.00000 100% 1.3 0s H 110 26 2.0000000 0.00000 100% 1.3 0s * 335 20 27 1.0000000 0.00000 100% 2.3 0s Cutting planes: Cover: 90 MIR: 2 Zero half: 1 Explored 336 nodes (1212 simplex iterations) in 0.06 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%