Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:54 2012 Optimize a model with 1 rows, 144 columns and 144 nonzeros Model has 102 quadratic objective terms Presolve removed 0 rows and 38 columns Presolve time: 0.00s Presolved: 103 rows, 208 columns, 412 nonzeros Variable types: 0 continuous, 208 integer (207 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 116 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 8 31.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 5.00000 0.00000 100% - 0s H 27 11 4.0000000 0.00000 100% 1.5 0s H 81 23 3.0000000 0.00000 100% 2.6 0s H 388 46 2.0000000 0.00000 100% 5.3 0s * 436 8 9 1.0000000 0.00000 100% 6.3 0s Cutting planes: Cover: 168 Explored 437 nodes (3004 simplex iterations) in 0.08 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%