Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:11:29 2012 Optimize a model with 893 rows, 132 columns and 1786 nonzeros Presolve removed 350 rows and 0 columns Presolve time: 0.01s Presolved: 543 rows, 132 columns, 1444 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.420339e+01, 367 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.20339 0 132 29.00000 44.20339 52.4% - 0s H 0 0 31.0000000 44.20339 42.6% - 0s 0 0 43.76593 0 130 31.00000 43.76593 41.2% - 0s 0 0 43.51626 0 130 31.00000 43.51626 40.4% - 0s H 0 0 33.0000000 43.51626 31.9% - 0s 0 0 43.23999 0 129 33.00000 43.23999 31.0% - 0s 0 0 42.76643 0 131 33.00000 42.76643 29.6% - 0s 0 0 42.50616 0 131 33.00000 42.50616 28.8% - 0s 0 0 42.31933 0 129 33.00000 42.31933 28.2% - 0s 0 0 42.04646 0 130 33.00000 42.04646 27.4% - 0s 0 0 41.95752 0 129 33.00000 41.95752 27.1% - 0s 0 0 41.90972 0 129 33.00000 41.90972 27.0% - 0s 0 0 41.87580 0 129 33.00000 41.87580 26.9% - 0s 0 0 41.86391 0 129 33.00000 41.86391 26.9% - 0s 0 0 41.86391 0 129 33.00000 41.86391 26.9% - 0s 0 2 41.86277 0 129 33.00000 41.86277 26.9% - 0s H 443 162 34.0000000 39.32087 15.6% 40.6 0s 612 198 37.83357 15 131 34.00000 38.98040 14.6% 38.5 5s H 834 223 35.0000000 38.98040 11.4% 46.5 6s Cutting planes: Gomory: 4 Clique: 4 Zero half: 52 Explored 1647 nodes (67445 simplex iterations) in 7.48 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%