Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:58:03 2013 Optimize a model with 1700 rows, 28100 columns and 58050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.29s Presolved: 1600 rows, 27950 columns, 55900 nonzeros Variable types: 27000 continuous, 950 integer (950 binary) Root relaxation: objective 1.824192e+05, 2761 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 1 - 182419.206 - - 0s H 0 0 199449.94651 182419.206 8.54% - 0s 0 0 182445.503 0 2 199449.947 182445.503 8.53% - 0s 0 0 182455.490 0 2 199449.947 182455.490 8.52% - 0s 0 0 182461.839 0 2 199449.947 182461.839 8.52% - 0s 0 0 182462.697 0 2 199449.947 182462.697 8.52% - 0s 0 0 182468.829 0 2 199449.947 182468.829 8.51% - 0s 0 0 182477.991 0 2 199449.947 182477.991 8.51% - 0s 0 0 182483.869 0 2 199449.947 182483.869 8.51% - 1s 0 0 182495.214 0 2 199449.947 182495.214 8.50% - 1s 0 0 182495.489 0 2 199449.947 182495.489 8.50% - 1s 0 0 182495.544 0 2 199449.947 182495.544 8.50% - 1s 0 0 182495.649 0 2 199449.947 182495.649 8.50% - 1s 0 0 182495.649 0 2 199449.947 182495.649 8.50% - 1s 0 2 182498.332 0 2 199449.947 182498.332 8.50% - 1s * 24 15 21 183174.31585 182527.608 0.35% 42.4 2s H 28 3 182907.07060 182588.634 0.17% 39.1 2s * 37 4 14 182879.22514 182640.375 0.13% 32.6 2s Cutting planes: Flow cover: 13 Explored 56 nodes (4623 simplex iterations) in 2.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828792251419e+05, best bound 1.828618442588e+05, gap 0.0095%