Gurobi 5.0.1 (linux64) logging started Wed Apr 24 09:56:33 2013 Optimize a model with 101100 rows, 100100 columns and 400100 nonzeros Presolve removed 6716 rows and 0 columns Presolve time: 0.75s Presolved: 94384 rows, 100100 columns, 386668 nonzeros Variable types: 100000 continuous, 100 integer (100 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 18895 1.1622327e+05 3.308560e+03 0.000000e+00 5s 20773 1.1789014e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.178901e+05, 20773 iterations, 6.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 117890.144 0 6 - 117890.144 - - 7s H 0 0 122372.00000 117890.144 3.66% - 7s 0 0 117894.056 0 10 122372.000 117894.056 3.66% - 8s 0 0 117894.173 0 10 122372.000 117894.173 3.66% - 9s H 0 0 120836.78178 117894.173 2.44% - 15s H 0 0 118395.13978 117894.173 0.42% - 15s H 0 0 118368.00000 117894.173 0.40% - 15s 0 0 117894.173 0 6 118368.000 117894.173 0.40% - 21s 0 0 117895.435 0 9 118368.000 117895.435 0.40% - 21s 0 0 117895.435 0 9 118368.000 117895.435 0.40% - 22s 0 2 117918.765 0 9 118368.000 117918.765 0.38% - 26s Cutting planes: Gomory: 3 Flow cover: 7 Explored 15 nodes (32548 simplex iterations) in 28.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.183680000000e+05, best bound 1.183680000000e+05, gap 0.0%