Gurobi 5.0.1 (linux64) logging started Tue Dec 11 04:06:58 2012 Optimize a model with 11910 rows, 11880 columns and 45325 nonzeros Presolve removed 679 rows and 92 columns Presolve time: 0.07s Presolved: 11231 rows, 11788 columns, 43944 nonzeros Variable types: 11088 continuous, 700 integer (700 binary) Root relaxation: objective 2.428018e+05, 1082 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 242801.770 0 25 - 242801.770 - - 0s H 0 0 246199.00000 242801.770 1.38% - 0s H 0 0 244401.00000 242801.770 0.65% - 0s 0 0 242830.198 0 39 244401.000 242830.198 0.64% - 0s 0 0 242900.426 0 29 244401.000 242900.426 0.61% - 0s 0 0 242907.578 0 42 244401.000 242907.578 0.61% - 0s 0 0 242910.690 0 50 244401.000 242910.690 0.61% - 0s 0 0 242911.625 0 50 244401.000 242911.625 0.61% - 0s 0 0 242912.320 0 50 244401.000 242912.320 0.61% - 0s 0 0 242912.565 0 48 244401.000 242912.565 0.61% - 0s 0 0 242912.571 0 48 244401.000 242912.571 0.61% - 0s 0 0 242912.639 0 47 244401.000 242912.639 0.61% - 0s 0 0 242913.348 0 53 244401.000 242913.348 0.61% - 0s 0 0 242913.389 0 52 244401.000 242913.389 0.61% - 0s 0 2 242917.588 0 52 244401.000 242917.588 0.61% - 0s H 27 27 243974.00000 243002.479 0.40% 9.5 1s * 126 44 44 243200.00000 243009.775 0.08% 5.2 1s 831 228 243080.182 24 45 243200.000 243077.330 0.05% 7.4 5s H 1734 186 243189.00000 243150.363 0.02% 6.1 6s Cutting planes: Gomory: 6 Flow cover: 18 Explored 2002 nodes (12741 simplex iterations) in 7.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.431890000000e+05, best bound 2.431653173598e+05, gap 0.0097%