Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:43:40 2012 Optimize a model with 1040 rows, 144 columns and 2080 nonzeros Presolve removed 406 rows and 0 columns Presolve time: 0.01s Presolved: 634 rows, 144 columns, 1664 nonzeros Variable types: 0 continuous, 144 integer (144 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.695856e+01, 436 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46.95856 0 144 29.00000 46.95856 61.9% - 0s H 0 0 30.0000000 46.95856 56.5% - 0s 0 0 46.53074 0 142 30.00000 46.53074 55.1% - 0s 0 0 46.34552 0 143 30.00000 46.34552 54.5% - 0s H 0 0 33.0000000 46.34552 40.4% - 0s 0 0 46.18919 0 142 33.00000 46.18919 40.0% - 0s 0 0 46.05040 0 142 33.00000 46.05040 39.5% - 0s 0 0 45.90279 0 142 33.00000 45.90279 39.1% - 0s 0 0 45.81291 0 142 33.00000 45.81291 38.8% - 0s 0 0 45.72399 0 144 33.00000 45.72399 38.6% - 0s 0 0 45.69389 0 143 33.00000 45.69389 38.5% - 0s 0 0 45.67336 0 144 33.00000 45.67336 38.4% - 0s 0 0 45.63417 0 144 33.00000 45.63417 38.3% - 0s 0 0 45.58016 0 142 33.00000 45.58016 38.1% - 0s 0 0 45.54335 0 144 33.00000 45.54335 38.0% - 0s 0 0 45.43330 0 144 33.00000 45.43330 37.7% - 0s 0 0 45.37769 0 144 33.00000 45.37769 37.5% - 0s 0 0 45.31201 0 143 33.00000 45.31201 37.3% - 0s 0 0 45.25885 0 143 33.00000 45.25885 37.1% - 0s 0 0 45.20756 0 144 33.00000 45.20756 37.0% - 0s 0 0 45.19814 0 144 33.00000 45.19814 37.0% - 0s 0 0 45.19814 0 144 33.00000 45.19814 37.0% - 0s H 0 0 34.0000000 45.19814 32.9% - 0s 0 2 45.19731 0 144 34.00000 45.19731 32.9% - 0s H 65 28 36.0000000 44.81069 24.5% 51.4 0s 610 201 40.95506 10 142 36.00000 42.01125 16.7% 43.1 5s 1879 568 38.05000 20 93 36.00000 40.91659 13.7% 45.2 10s 4748 954 cutoff 34 36.00000 39.11905 8.66% 37.7 15s Cutting planes: Gomory: 4 Clique: 3 Zero half: 46 Explored 7953 nodes (266973 simplex iterations) in 19.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%