Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:58:02 2013 Optimize a model with 81990 rows, 81090 columns and 324090 nonzeros Presolve removed 4057 rows and 0 columns Presolve time: 0.57s Presolved: 77933 rows, 81090 columns, 315976 nonzeros Variable types: 81000 continuous, 90 integer (90 binary) Root relaxation: objective 1.048260e+05, 15734 iterations, 3.62 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 104825.997 0 5 - 104825.997 - - 4s H 0 0 109655.00000 104825.997 4.40% - 4s 0 0 104829.484 0 8 109655.000 104829.484 4.40% - 5s 0 0 104829.970 0 8 109655.000 104829.970 4.40% - 6s 0 0 104830.014 0 9 109655.000 104830.014 4.40% - 7s 0 0 104830.159 0 7 109655.000 104830.159 4.40% - 7s 0 0 104830.208 0 9 109655.000 104830.208 4.40% - 8s 0 0 104830.357 0 7 109655.000 104830.357 4.40% - 8s 0 0 104830.357 0 7 109655.000 104830.357 4.40% - 8s 0 0 104830.357 0 7 109655.000 104830.357 4.40% - 9s 0 2 104835.785 0 7 109655.000 104835.785 4.39% - 12s H 2 2 108557.59671 104871.565 3.40% 26.0 12s H 3 3 106878.01186 104903.566 1.85% 82.7 12s H 7 5 105022.00000 104918.128 0.10% 137 13s H 9 4 105015.18519 104918.128 0.09% 126 13s H 12 5 105002.32967 104918.128 0.08% 102 13s * 13 4 12 104982.00000 104918.128 0.06% 109 14s Cutting planes: Gomory: 2 Flow cover: 10 Explored 18 nodes (17538 simplex iterations) in 14.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.049820000000e+05, best bound 1.049820000000e+05, gap 0.0%