Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:37 2012 Optimize a model with 1044 rows, 64 columns and 2088 nonzeros Presolve removed 751 rows and 0 columns Presolve time: 0.02s Presolved: 293 rows, 64 columns, 1872 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 9.996813e+00, 130 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9.99681 0 56 5.00000 9.99681 100% - 0s H 0 0 6.0000000 9.99681 66.6% - 0s 0 0 9.60760 0 58 6.00000 9.60760 60.1% - 0s H 0 0 7.0000000 9.60760 37.3% - 0s 0 0 9.54722 0 58 7.00000 9.54722 36.4% - 0s 0 0 9.53740 0 60 7.00000 9.53740 36.2% - 0s 0 0 9.53073 0 57 7.00000 9.53073 36.2% - 0s 0 0 9.52529 0 57 7.00000 9.52529 36.1% - 0s 0 0 9.51291 0 59 7.00000 9.51291 35.9% - 0s 0 0 9.50359 0 58 7.00000 9.50359 35.8% - 0s 0 0 9.49882 0 59 7.00000 9.49882 35.7% - 0s 0 0 9.49846 0 60 7.00000 9.49846 35.7% - 0s 0 0 9.49841 0 59 7.00000 9.49841 35.7% - 0s 0 2 9.49285 0 59 7.00000 9.49285 35.6% - 0s * 21 2 4 8.0000000 9.00390 12.5% 36.1 0s Cutting planes: Clique: 35 Zero half: 5 Explored 24 nodes (1093 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%