Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:32:02 2012 Optimize a model with 1019 rows, 141 columns and 2038 nonzeros Presolve removed 421 rows and 0 columns Presolve time: 0.01s Presolved: 598 rows, 141 columns, 1590 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.558570e+01, 383 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.58570 0 140 29.00000 45.58570 57.2% - 0s H 0 0 31.0000000 45.58570 47.1% - 0s 0 0 45.15511 0 140 31.00000 45.15511 45.7% - 0s 0 0 45.08265 0 140 31.00000 45.08265 45.4% - 0s H 0 0 32.0000000 45.08265 40.9% - 0s 0 0 44.91205 0 140 32.00000 44.91205 40.4% - 0s 0 0 44.70711 0 141 32.00000 44.70711 39.7% - 0s 0 0 44.55003 0 140 32.00000 44.55003 39.2% - 0s 0 0 44.47720 0 140 32.00000 44.47720 39.0% - 0s 0 0 44.45052 0 141 32.00000 44.45052 38.9% - 0s 0 0 44.42413 0 140 32.00000 44.42413 38.8% - 0s 0 0 44.35622 0 141 32.00000 44.35622 38.6% - 0s 0 0 44.31236 0 139 32.00000 44.31236 38.5% - 0s 0 0 44.28315 0 140 32.00000 44.28315 38.4% - 0s 0 0 44.23255 0 140 32.00000 44.23255 38.2% - 0s 0 0 44.22367 0 141 32.00000 44.22367 38.2% - 0s 0 0 44.21269 0 141 32.00000 44.21269 38.2% - 0s 0 0 44.21269 0 141 32.00000 44.21269 38.2% - 0s H 0 0 34.0000000 44.21269 30.0% - 0s 0 2 44.21061 0 141 34.00000 44.21061 30.0% - 0s H 53 26 36.0000000 43.95373 22.1% 53.3 0s 2428 574 cutoff 29 36.00000 39.94444 11.0% 39.5 5s Explored 5246 nodes (173569 simplex iterations) in 8.00 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%