Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:02:49 2013 Optimize a model with 45694 rows, 45024 columns and 179694 nonzeros Presolve removed 67 rows and 0 columns Presolve time: 0.20s Presolved: 45627 rows, 45024 columns, 179627 nonzeros Variable types: 44957 continuous, 67 integer (67 binary) Root relaxation: objective 5.983752e+04, 6464 iterations, 3.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59837.5231 0 54 - 59837.5231 - - 4s H 0 0 92923.000000 59837.5231 35.6% - 6s 0 0 78638.1228 0 6 92923.0000 78638.1228 15.4% - 10s H 0 0 80995.314367 78638.1228 2.91% - 10s H 0 0 80022.000000 78638.1228 1.73% - 10s 0 0 79009.3900 0 4 80022.0000 79009.3900 1.27% - 11s H 0 0 79596.000000 79009.3900 0.74% - 11s H 0 0 79149.000000 79009.3900 0.18% - 11s 0 0 79009.5623 0 2 79149.0000 79009.5623 0.18% - 11s 0 0 79009.5623 0 49 79149.0000 79009.5623 0.18% - 16s 0 0 79009.5623 0 5 79149.0000 79009.5623 0.18% - 21s 0 0 79009.5623 0 4 79149.0000 79009.5623 0.18% - 22s 0 0 79009.5623 0 2 79149.0000 79009.5623 0.18% - 22s 0 2 79010.1015 0 2 79149.0000 79010.1015 0.18% - 23s Cutting planes: Gomory: 3 Implied bound: 48 Explored 12 nodes (22336 simplex iterations) in 24.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.914900000000e+04, best bound 7.914167507003e+04, gap 0.0093%