Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:51:27 2013 Optimize a model with 74906 rows, 74046 columns and 295926 nonzeros Presolve removed 4650 rows and 0 columns Presolve time: 0.49s Presolved: 70256 rows, 74046 columns, 286626 nonzeros Variable types: 73960 continuous, 86 integer (86 binary) Root relaxation: objective 1.142686e+05, 15851 iterations, 3.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 114268.562 0 5 - 114268.562 - - 4s H 0 0 120935.00000 114268.562 5.51% - 4s H 0 0 120377.00000 114268.562 5.07% - 4s 0 0 114269.349 0 7 120377.000 114269.349 5.07% - 5s H 0 0 120356.00000 114269.349 5.06% - 5s 0 0 114269.349 0 7 120356.000 114269.349 5.06% - 5s 0 0 114269.349 0 7 120356.000 114269.349 5.06% - 6s H 0 0 118529.46676 114269.349 3.59% - 8s H 0 0 115987.43165 114269.349 1.48% - 8s H 0 0 115225.00000 114269.349 0.83% - 8s 0 2 114277.189 0 7 115225.000 114277.189 0.82% - 9s 1 3 114341.567 1 5 115225.000 114341.567 0.77% 216 10s * 13 9 9 114662.00000 114412.004 0.22% 269 12s H 40 14 114610.00000 114453.408 0.14% 144 14s * 42 12 7 114560.00000 114453.408 0.09% 138 14s 56 6 cutoff 6 114560.000 114542.978 0.01% 118 15s Cutting planes: Gomory: 2 Flow cover: 7 Explored 60 nodes (22716 simplex iterations) in 15.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.145600000000e+05, best bound 1.145541627907e+05, gap 0.0051%