Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:35 2012 Optimize a model with 1 rows, 156 columns and 156 nonzeros Model has 140 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 141 rows, 270 columns, 550 nonzeros Variable types: 0 continuous, 270 integer (269 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 178 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 35 32.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 26.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 18.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 13.00000 0.00000 100% - 0s 0 0 0.00000 0 17 13.00000 0.00000 100% - 0s 0 0 0.00000 0 16 13.00000 0.00000 100% - 0s 0 0 0.00000 0 15 13.00000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 11.00000 0.00000 100% - 0s 0 0 0.00000 0 14 11.00000 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 27 27 8.0000000 0.00000 100% 1.2 0s H 341 108 7.0000000 0.00000 100% 6.1 0s * 469 111 17 6.0000000 0.00000 100% 8.8 0s * 479 80 12 5.0000000 0.77419 84.5% 9.7 0s Cutting planes: Cover: 246 MIR: 2 Zero half: 1 Explored 563 nodes (10503 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%