Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:14:05 2012 Optimize a model with 985 rows, 133 columns and 1970 nonzeros Presolve removed 403 rows and 0 columns Presolve time: 0.01s Presolved: 582 rows, 133 columns, 1564 nonzeros Variable types: 0 continuous, 133 integer (133 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.294321e+01, 382 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42.94321 0 132 27.00000 42.94321 59.0% - 0s 0 0 42.67043 0 132 27.00000 42.67043 58.0% - 0s 0 0 42.54358 0 132 27.00000 42.54358 57.6% - 0s 0 0 42.43833 0 133 27.00000 42.43833 57.2% - 0s 0 0 42.33258 0 133 27.00000 42.33258 56.8% - 0s H 0 0 28.0000000 42.33258 51.2% - 0s 0 0 42.26779 0 133 28.00000 42.26779 51.0% - 0s H 0 0 30.0000000 42.26779 40.9% - 0s 0 0 42.22765 0 132 30.00000 42.22765 40.8% - 0s 0 0 42.17684 0 133 30.00000 42.17684 40.6% - 0s 0 0 42.11758 0 132 30.00000 42.11758 40.4% - 0s 0 0 42.05916 0 132 30.00000 42.05916 40.2% - 0s 0 0 42.00727 0 132 30.00000 42.00727 40.0% - 0s 0 0 41.96472 0 132 30.00000 41.96472 39.9% - 0s 0 0 41.94232 0 132 30.00000 41.94232 39.8% - 0s 0 0 41.83588 0 131 30.00000 41.83588 39.5% - 0s 0 0 41.68874 0 132 30.00000 41.68874 39.0% - 0s 0 0 41.57681 0 131 30.00000 41.57681 38.6% - 0s 0 0 41.51096 0 133 30.00000 41.51096 38.4% - 0s 0 0 41.50861 0 133 30.00000 41.50861 38.4% - 0s 0 2 41.50748 0 133 30.00000 41.50748 38.4% - 0s H 34 22 32.0000000 41.33097 29.2% 54.7 0s H 1020 260 33.0000000 38.07425 15.4% 47.1 2s 2310 467 35.00000 29 79 33.00000 36.77778 11.4% 39.3 5s Explored 4066 nodes (142974 simplex iterations) in 7.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%