Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:13:06 2013 Optimize a model with 26622 rows, 26112 columns and 104142 nonzeros Presolve removed 51 rows and 0 columns Presolve time: 0.12s Presolved: 26571 rows, 26112 columns, 104091 nonzeros Variable types: 26061 continuous, 51 integer (51 binary) Root relaxation: objective 4.172567e+04, 3381 iterations, 1.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41725.6739 0 43 - 41725.6739 - - 1s H 0 0 59824.000000 41725.6739 30.3% - 2s 0 0 52511.9684 0 9 59824.0000 52511.9684 12.2% - 3s H 0 0 56738.872101 52511.9684 7.45% - 3s H 0 0 55345.000000 52511.9684 5.12% - 3s 0 0 53290.8784 0 6 55345.0000 53290.8784 3.71% - 4s H 0 0 55156.000000 53290.8784 3.38% - 4s H 0 0 54416.000000 53290.8784 2.07% - 4s 0 2 53291.8507 0 6 54416.0000 53291.8507 2.07% - 4s 1 3 53360.9616 1 4 54416.0000 53360.9616 1.94% 78.0 5s H 5 5 53771.413793 53365.8000 0.75% 37.2 5s H 21 13 53644.000000 53379.0000 0.49% 57.1 5s H 23 15 53609.655172 53379.0000 0.43% 55.8 5s * 25 14 12 53578.000000 53379.0000 0.37% 53.3 5s * 47 9 9 53452.000000 53416.8613 0.07% 49.3 6s Cutting planes: Implied bound: 47 Explored 63 nodes (8364 simplex iterations) in 6.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.345200000000e+04, best bound 5.345200000000e+04, gap 0.0%