Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:05:41 2012 Optimize a model with 822 rows, 129 columns and 1644 nonzeros Presolve removed 318 rows and 0 columns Presolve time: 0.01s Presolved: 504 rows, 129 columns, 1301 nonzeros Variable types: 0 continuous, 129 integer (129 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.368636e+01, 350 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.68636 0 125 26.00000 43.68636 68.0% - 0s H 0 0 28.0000000 43.68636 56.0% - 0s H 0 0 33.0000000 43.68636 32.4% - 0s 0 0 43.29681 0 126 33.00000 43.29681 31.2% - 0s 0 0 43.01025 0 125 33.00000 43.01025 30.3% - 0s 0 0 42.83422 0 126 33.00000 42.83422 29.8% - 0s 0 0 42.75251 0 125 33.00000 42.75251 29.6% - 0s H 0 0 34.0000000 42.75251 25.7% - 0s 0 0 42.68429 0 127 34.00000 42.68429 25.5% - 0s 0 0 42.58989 0 127 34.00000 42.58989 25.3% - 0s 0 0 42.45571 0 128 34.00000 42.45571 24.9% - 0s 0 0 42.32042 0 127 34.00000 42.32042 24.5% - 0s 0 0 42.30367 0 127 34.00000 42.30367 24.4% - 0s 0 0 42.30085 0 127 34.00000 42.30085 24.4% - 0s 0 0 42.30085 0 127 34.00000 42.30085 24.4% - 0s 0 2 42.30034 0 127 34.00000 42.30034 24.4% - 0s H 55 25 35.0000000 41.71546 19.2% 47.7 0s 4522 379 36.36190 26 83 35.00000 37.48571 7.10% 26.7 5s Explored 5724 nodes (145072 simplex iterations) in 5.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%