Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:30:03 2013 Optimize a model with 1980 rows, 324180 columns and 648180 nonzeros Presolve time: 0.84s Presolved: 1980 rows, 324180 columns, 648180 nonzeros Variable types: 324000 continuous, 180 integer (180 binary) Root relaxation: objective 3.498284e+05, 10654 iterations, 0.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 349828.382 0 9 - 349828.382 - - 2s H 0 0 374260.00000 349828.382 6.53% - 2s 0 0 350292.823 0 5 374260.000 350292.823 6.40% - 4s H 0 0 373368.00000 350292.823 6.18% - 4s 0 0 350407.305 0 6 373368.000 350407.305 6.15% - 5s 0 0 350438.319 0 7 373368.000 350438.319 6.14% - 5s 0 0 350456.511 0 7 373368.000 350456.511 6.14% - 6s H 0 0 372167.00000 350456.511 5.83% - 7s 0 0 350466.765 0 6 372167.000 350466.765 5.83% - 7s 0 0 350467.666 0 6 372167.000 350467.666 5.83% - 8s H 0 0 372114.00000 350467.666 5.82% - 8s 0 0 350468.047 0 5 372114.000 350468.047 5.82% - 9s H 0 0 369931.57394 350468.047 5.26% - 9s H 0 0 366922.00000 350468.047 4.48% - 9s 0 0 350468.503 0 5 366922.000 350468.503 4.48% - 9s 0 0 350468.503 0 5 366922.000 350468.503 4.48% - 10s 0 2 350480.625 0 5 366922.000 350480.625 4.48% - 14s 1 3 350612.133 1 4 366922.000 350612.133 4.45% 297 15s H 2 2 357560.09297 350612.133 1.94% 148 15s H 3 3 356639.14286 350613.166 1.69% 150 15s H 6 6 356242.35023 350685.158 1.56% 158 16s H 7 7 351536.73469 350699.378 0.24% 144 17s H 8 8 351381.00000 350706.990 0.19% 154 17s * 9 4 8 350784.00000 350706.990 0.02% 157 17s Cutting planes: Implied bound: 113 Flow cover: 8 Explored 15 nodes (13221 simplex iterations) in 18.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.507840000000e+05, best bound 3.507840000000e+05, gap 0.0%