Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:31:40 2012 Optimize a model with 2190 rows, 2160 columns and 7160 nonzeros Presolve removed 92 rows and 56 columns Presolve time: 0.02s Presolved: 2098 rows, 2104 columns, 6936 nonzeros Variable types: 1404 continuous, 700 integer (700 binary) Root relaxation: objective 1.975410e+05, 1054 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 197540.976 0 355 - 197540.976 - - 0s H 0 0 313465.00000 197540.976 37.0% - 0s 0 0 241099.949 0 89 313465.000 241099.949 23.1% - 0s 0 0 242514.156 0 38 313465.000 242514.156 22.6% - 0s 0 0 242660.028 0 23 313465.000 242660.028 22.6% - 0s 0 0 242679.221 0 31 313465.000 242679.221 22.6% - 0s 0 2 242680.781 0 31 313465.000 242680.781 22.6% - 0s H 54 54 244067.00000 242682.195 0.57% 3.9 0s H 590 356 243610.00000 242782.415 0.34% 3.6 0s * 593 354 129 243606.00000 242782.415 0.34% 3.6 0s H 700 254 243281.00000 242799.023 0.20% 3.5 0s * 4773 2028 72 243274.00000 243076.168 0.08% 4.3 4s 5385 2312 243264.722 27 18 243274.000 243085.425 0.08% 4.3 5s H 7395 3213 243269.00000 243101.362 0.07% 4.2 6s H 7730 2560 243225.00000 243102.828 0.05% 4.2 6s H 7900 1954 243200.00000 243104.564 0.04% 4.2 6s 11904 1897 243138.574 52 13 243200.000 243104.564 0.04% 3.9 10s 21030 2102 243191.908 48 9 243200.000 243155.002 0.02% 3.5 15s H23183 1391 243189.00000 243165.882 0.01% 3.5 16s Cutting planes: Gomory: 23 Cover: 1 Flow cover: 119 Flow path: 90 Explored 23183 nodes (82054 simplex iterations) in 16.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.431890000000e+05, best bound 2.431658818739e+05, gap 0.0095%