Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:14:15 2013 Optimize a model with 83811 rows, 82901 columns and 331331 nonzeros Presolve removed 6012 rows and 0 columns Presolve time: 0.58s Presolved: 77799 rows, 82901 columns, 319307 nonzeros Variable types: 82810 continuous, 91 integer (91 binary) Root relaxation: objective 1.059135e+05, 17741 iterations, 4.83 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 105913.511 0 4 - 105913.511 - - 5s H 0 0 108449.00000 105913.511 2.34% - 5s H 0 0 106152.00000 105913.511 0.22% - 6s 0 0 105915.457 0 6 106152.000 105915.457 0.22% - 6s 0 0 105915.457 0 4 106152.000 105915.457 0.22% - 9s 0 0 105915.479 0 6 106152.000 105915.479 0.22% - 10s 0 0 105915.479 0 6 106152.000 105915.479 0.22% - 10s 0 0 105915.969 0 6 106152.000 105915.969 0.22% - 10s 0 0 105915.969 0 6 106152.000 105915.969 0.22% - 11s 0 0 106055.253 0 5 106152.000 106055.253 0.09% - 12s 0 0 106055.457 0 4 106152.000 106055.457 0.09% - 12s 0 2 106062.032 0 4 106152.000 106062.032 0.08% - 13s Cutting planes: Gomory: 1 Flow cover: 4 Explored 5 nodes (23770 simplex iterations) in 13.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.061520000000e+05, best bound 1.061520000000e+05, gap 0.0%