Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:03 2013 Optimize a model with 539 rows, 24059 columns and 48069 nonzeros Presolve time: 0.03s Presolved: 539 rows, 24059 columns, 48069 nonzeros Variable types: 24010 continuous, 49 integer (49 binary) Root relaxation: objective 5.231004e+04, 1031 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52310.0422 0 8 - 52310.0422 - - 0s H 0 0 53612.000000 52310.0422 2.43% - 0s H 0 0 52765.000000 52310.0422 0.86% - 0s 0 0 52556.7013 0 4 52765.0000 52556.7013 0.39% - 0s 0 0 52567.5362 0 8 52765.0000 52567.5362 0.37% - 0s 0 0 52573.9042 0 5 52765.0000 52573.9042 0.36% - 0s 0 0 52578.8688 0 7 52765.0000 52578.8688 0.35% - 0s 0 0 52582.9463 0 5 52765.0000 52582.9463 0.35% - 0s 0 0 52584.3690 0 2 52765.0000 52584.3690 0.34% - 0s H 0 0 52721.101109 52584.3690 0.26% - 0s H 0 0 52639.000000 52584.3690 0.10% - 0s H 0 0 52634.000000 52584.3690 0.09% - 0s 0 0 52584.4796 0 3 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 8 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 4 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 7 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 6 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 5 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 6 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 5 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 5 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 2 52634.0000 52584.4796 0.09% - 0s 0 0 52584.4796 0 4 52634.0000 52584.4796 0.09% - 0s 0 0 52585.4882 0 3 52634.0000 52585.4882 0.09% - 0s 0 0 52585.5414 0 4 52634.0000 52585.5414 0.09% - 0s 0 0 52586.1070 0 3 52634.0000 52586.1070 0.09% - 0s 0 0 52586.2972 0 4 52634.0000 52586.2972 0.09% - 0s 0 0 52613.7859 0 2 52634.0000 52613.7859 0.04% - 0s 0 0 52620.7869 0 1 52634.0000 52620.7869 0.03% - 0s Cutting planes: Implied bound: 77 Flow cover: 3 Explored 0 nodes (2443 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.263400000000e+04, best bound 5.263400000000e+04, gap 0.0%