Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:23:27 2013 Optimize a model with 32032 rows, 31472 columns and 125552 nonzeros Presolve removed 56 rows and 0 columns Presolve time: 0.14s Presolved: 31976 rows, 31472 columns, 125496 nonzeros Variable types: 31416 continuous, 56 integer (56 binary) Root relaxation: objective 4.379748e+04, 3509 iterations, 1.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43797.4764 0 44 - 43797.4764 - - 1s H 0 0 60153.000000 43797.4764 27.2% - 1s 0 0 51341.9608 0 12 60153.0000 51341.9608 14.6% - 4s H 0 0 56873.000000 51341.9608 9.73% - 4s H 0 0 56268.000000 51341.9608 8.75% - 4s 0 0 52060.1507 0 4 56268.0000 52060.1507 7.48% - 4s H 0 0 55360.775534 52060.1507 5.96% - 4s H 0 0 54866.000000 52060.1507 5.11% - 4s 0 0 52334.1269 0 4 54866.0000 52334.1269 4.61% - 5s H 0 0 53582.000000 52334.1269 2.33% - 5s H 0 0 53229.000000 52334.1269 1.68% - 5s 0 0 52567.0173 0 4 53229.0000 52567.0173 1.24% - 5s H 0 0 52785.000000 52567.0173 0.41% - 5s H 0 0 52670.000000 52567.0173 0.20% - 5s 0 0 52568.5635 0 2 52670.0000 52568.5635 0.19% - 5s 0 2 52568.7183 0 2 52670.0000 52568.7183 0.19% - 6s Cutting planes: Gomory: 1 Implied bound: 53 Explored 10 nodes (7617 simplex iterations) in 6.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.267000000000e+04, best bound 5.267000000000e+04, gap 0.0%