Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:35:14 2013 Optimize a model with 52704 rows, 51984 columns and 207504 nonzeros Presolve removed 72 rows and 0 columns Presolve time: 0.23s Presolved: 52632 rows, 51984 columns, 207432 nonzeros Variable types: 51912 continuous, 72 integer (72 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7121 6.4827471e+04 5.270180e+04 0.000000e+00 5s 8459 6.5225794e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.522579e+04, 8459 iterations, 7.48 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65225.7940 0 58 - 65225.7940 - - 7s H 0 0 111042.00000 65225.7940 41.3% - 11s 0 0 86820.5820 0 18 111042.000 86820.5820 21.8% - 20s H 0 0 102213.00000 86820.5820 15.1% - 21s 0 0 90791.8516 0 7 102213.000 90791.8516 11.2% - 23s H 0 0 98745.465529 90791.8516 8.05% - 23s H 0 0 96405.000000 90791.8516 5.82% - 23s 0 0 90874.1215 0 4 96405.0000 90874.1215 5.74% - 24s H 0 0 93215.081013 90874.1215 2.51% - 24s H 0 0 92720.000000 90874.1215 1.99% - 24s H 0 0 91778.000000 90874.1215 0.98% - 24s 0 2 90880.9505 0 4 91778.0000 90880.9505 0.98% - 25s H 1 1 91656.082456 90880.9505 0.85% 0.0 25s H 4 4 91630.453721 90959.5227 0.73% 256 26s H 9 7 91244.000000 90993.7368 0.27% 219 27s H 10 8 91212.242424 91004.4211 0.23% 200 27s * 15 7 11 91092.000000 91016.3302 0.08% 162 27s Cutting planes: Implied bound: 72 Explored 21 nodes (20866 simplex iterations) in 28.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.109200000000e+04, best bound 9.109200000000e+04, gap 0.0%