Gurobi 5.0.1 (linux64) logging started Sat Jan 26 21:32:50 2013 Optimize a model with 30 rows, 100 columns and 3000 nonzeros Presolve time: 0.01s Presolved: 30 rows, 100 columns, 3000 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 58503.000000 Root relaxation: objective 6.123952e+04, 48 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61239.5243 0 16 58503.0000 61239.5243 4.68% - 0s H 0 0 60388.000000 61239.5243 1.41% - 0s 0 0 61224.1599 0 18 60388.0000 61224.1599 1.38% - 0s H 0 0 60509.000000 61224.1599 1.18% - 0s 0 0 61211.7018 0 19 60509.0000 61211.7018 1.16% - 0s 0 0 61207.5251 0 19 60509.0000 61207.5251 1.15% - 0s 0 2 61207.3851 0 19 60509.0000 61207.3851 1.15% - 0s H 4 4 60612.000000 61188.1225 0.95% 10.5 0s H 37 35 60646.000000 61188.1225 0.89% 5.1 0s H 634 457 60684.000000 61140.5433 0.75% 5.3 0s H 3365 1738 60720.000000 61071.5995 0.58% 5.5 0s H34726 11806 60776.000000 60934.4134 0.26% 5.5 3s 40900 12432 60894.1916 29 14 60776.0000 60921.3989 0.24% 5.5 5s 89784 6936 cutoff 31 60776.0000 60836.4872 0.10% 5.3 10s Explored 100432 nodes (514130 simplex iterations) in 10.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.077600000000e+04, best bound 6.078200000000e+04, gap 0.0099%