Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:30 2012 Optimize a model with 1 rows, 153 columns and 153 nonzeros Model has 125 quadratic objective terms Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 126 rows, 262 columns, 512 nonzeros Variable types: 0 continuous, 262 integer (261 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 173 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 34 34.00000 0.00000 100% - 0s 0 0 0.00000 0 23 34.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 22.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 12.00000 0.00000 100% - 0s 0 0 0.00000 0 16 12.00000 0.00000 100% - 0s 0 0 0.00000 0 20 12.00000 0.00000 100% - 0s 0 0 0.00000 0 20 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 9.00000 0.00000 100% - 0s H 22 20 7.0000000 0.00000 100% 2.5 0s H 37 26 6.0000000 0.00000 100% 2.4 0s H 108 27 5.0000000 0.00000 100% 2.9 0s * 189 42 15 4.0000000 0.00000 100% 3.2 0s H 274 50 3.0000000 0.00000 100% 4.7 0s * 461 42 14 2.0000000 0.29412 85.3% 7.7 0s Cutting planes: Cover: 194 Explored 504 nodes (5506 simplex iterations) in 0.13 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%