Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:00:55 2013 Optimize a model with 68142 rows, 67322 columns and 269042 nonzeros Presolve removed 7152 rows and 0 columns Presolve time: 0.44s Presolved: 60990 rows, 67322 columns, 254738 nonzeros Variable types: 67240 continuous, 82 integer (82 binary) Root relaxation: objective 9.392254e+04, 14368 iterations, 3.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 93922.5386 0 2 - 93922.5386 - - 3s H 0 0 97025.000000 93922.5386 3.20% - 4s 0 0 93924.8235 0 3 97025.0000 93924.8235 3.20% - 4s H 0 0 96380.000000 93924.8235 2.55% - 4s 0 0 93925.0092 0 3 96380.0000 93925.0092 2.55% - 5s 0 0 93925.0092 0 3 96380.0000 93925.0092 2.55% - 5s H 0 0 96356.000000 93925.0092 2.52% - 5s H 0 0 95961.746988 93925.0092 2.12% - 6s 0 2 93938.0536 0 3 95961.7470 93938.0536 2.11% - 7s H 4 4 94258.000000 93982.8889 0.29% 136 8s * 16 5 15 94127.000000 93998.9751 0.14% 92.1 9s 21 5 94086.9545 8 1 94127.0000 94004.8831 0.13% 86.5 10s * 30 1 8 94073.000000 94071.8920 0.00% 73.1 10s Cutting planes: Gomory: 1 Flow cover: 4 Explored 31 nodes (16578 simplex iterations) in 10.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.407300000000e+04, best bound 9.407189204600e+04, gap 0.0012%