Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:38:41 2013 Optimize a model with 73185 rows, 72335 columns and 289085 nonzeros Presolve removed 2655 rows and 0 columns Presolve time: 0.47s Presolved: 70530 rows, 72335 columns, 283775 nonzeros Variable types: 72250 continuous, 85 integer (85 binary) Root relaxation: objective 9.248174e+04, 14395 iterations, 4.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 92481.7353 0 4 - 92481.7353 - - 4s H 0 0 95676.000000 92481.7353 3.34% - 5s 0 0 92483.2189 0 5 95676.0000 92483.2189 3.34% - 5s 0 0 92483.7955 0 5 95676.0000 92483.7955 3.34% - 6s 0 0 92483.7955 0 5 95676.0000 92483.7955 3.34% - 6s H 0 0 93303.000000 92483.7955 0.88% - 8s 0 0 92483.7955 0 4 93303.0000 92483.7955 0.88% - 13s 0 0 92483.7955 0 5 93303.0000 92483.7955 0.88% - 13s 0 0 92483.7955 0 5 93303.0000 92483.7955 0.88% - 14s 0 2 92490.9424 0 5 93303.0000 92490.9424 0.87% - 16s H 6 6 92976.934426 92718.6492 0.28% 116 16s H 7 5 92896.490231 92718.6492 0.19% 104 16s H 14 8 92879.238095 92718.6492 0.17% 83.5 17s * 16 10 14 92825.000000 92718.6492 0.11% 89.7 17s Cutting planes: Gomory: 1 Flow cover: 6 Explored 42 nodes (25888 simplex iterations) in 18.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.282500000000e+04, best bound 9.282500000000e+04, gap 0.0%