Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:14:32 2012 Optimize a model with 870 rows, 134 columns and 1740 nonzeros Presolve removed 342 rows and 0 columns Presolve time: 0.01s Presolved: 528 rows, 134 columns, 1357 nonzeros Variable types: 0 continuous, 134 integer (134 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.481923e+01, 370 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.81923 0 133 27.00000 44.81923 66.0% - 0s H 0 0 31.0000000 44.81923 44.6% - 0s 0 0 44.47164 0 134 31.00000 44.47164 43.5% - 0s 0 0 44.32440 0 133 31.00000 44.32440 43.0% - 0s H 0 0 32.0000000 44.32440 38.5% - 0s 0 0 44.25464 0 134 32.00000 44.25464 38.3% - 0s 0 0 44.04817 0 134 32.00000 44.04817 37.7% - 0s 0 0 43.91630 0 134 32.00000 43.91630 37.2% - 0s 0 0 43.75588 0 134 32.00000 43.75588 36.7% - 0s H 0 0 34.0000000 43.75588 28.7% - 0s 0 0 43.72940 0 134 34.00000 43.72940 28.6% - 0s 0 0 43.71082 0 134 34.00000 43.71082 28.6% - 0s 0 0 43.65516 0 134 34.00000 43.65516 28.4% - 0s 0 0 43.63416 0 133 34.00000 43.63416 28.3% - 0s 0 0 43.58741 0 134 34.00000 43.58741 28.2% - 0s 0 0 43.56054 0 134 34.00000 43.56054 28.1% - 0s 0 0 43.50302 0 134 34.00000 43.50302 28.0% - 0s 0 0 43.43733 0 133 34.00000 43.43733 27.8% - 0s 0 0 43.36530 0 134 34.00000 43.36530 27.5% - 0s 0 0 43.33755 0 134 34.00000 43.33755 27.5% - 0s 0 0 43.33586 0 134 34.00000 43.33586 27.5% - 0s 0 0 43.33586 0 134 34.00000 43.33586 27.5% - 0s 0 2 43.33414 0 134 34.00000 43.33414 27.5% - 0s H 213 80 35.0000000 41.68828 19.1% 45.6 0s 3190 875 36.00000 27 64 35.00000 39.21237 12.0% 32.1 5s 9032 483 36.51525 34 97 35.00000 37.04651 5.85% 26.7 10s Explored 10150 nodes (260690 simplex iterations) in 10.63 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%