Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:28:58 2013 Optimize a model with 51262 rows, 50552 columns and 201782 nonzeros Presolve removed 71 rows and 0 columns Presolve time: 0.23s Presolved: 51191 rows, 50552 columns, 201711 nonzeros Variable types: 50481 continuous, 71 integer (71 binary) Root relaxation: objective 6.088215e+04, 6695 iterations, 4.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60882.1478 0 57 - 60882.1478 - - 4s H 0 0 93787.000000 60882.1478 35.1% - 7s 0 0 75117.8239 0 15 93787.0000 75117.8239 19.9% - 14s H 0 0 87903.000000 75117.8239 14.5% - 14s 0 0 79042.9164 0 5 87903.0000 79042.9164 10.1% - 16s H 0 0 83335.644096 79042.9164 5.15% - 16s H 0 0 82770.000000 79042.9164 4.50% - 16s H 0 0 82305.000000 79042.9164 3.96% - 16s 0 0 79201.2827 0 5 82305.0000 79201.2827 3.77% - 16s H 0 0 81470.000000 79201.2827 2.78% - 17s 0 0 79254.4617 0 4 81470.0000 79254.4617 2.72% - 17s H 0 0 81304.492015 79254.4617 2.52% - 18s H 0 0 79736.125000 79254.4617 0.60% - 18s H 0 0 79681.493506 79254.4617 0.54% - 18s H 0 0 79518.000000 79254.4617 0.33% - 18s 0 2 79255.7191 0 4 79518.0000 79255.7191 0.33% - 18s 7 5 79459.8182 5 2 79518.0000 79351.6334 0.21% 266 20s * 24 4 10 79479.000000 79445.1769 0.04% 166 21s Cutting planes: Implied bound: 67 Explored 29 nodes (18069 simplex iterations) in 21.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.947900000000e+04, best bound 7.947900000000e+04, gap 0.0%