Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:30:31 2013 Optimize a model with 95157 rows, 94187 columns and 376457 nonzeros Presolve removed 3955 rows and 0 columns Presolve time: 0.68s Presolved: 91202 rows, 94187 columns, 368547 nonzeros Variable types: 94090 continuous, 97 integer (97 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17921 1.1472064e+05 1.190148e+03 0.000000e+00 5s 18769 1.1513889e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.151389e+05, 18769 iterations, 5.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 115138.891 0 8 - 115138.891 - - 6s H 0 0 124450.00000 115138.891 7.48% - 7s 0 0 115142.430 0 11 124450.000 115142.430 7.48% - 8s H 0 0 119068.29233 115142.430 3.30% - 12s H 0 0 115585.00000 115142.430 0.38% - 13s 0 0 115142.430 0 8 115585.000 115142.430 0.38% - 18s 0 0 115143.507 0 9 115585.000 115143.507 0.38% - 19s 0 0 115143.750 0 9 115585.000 115143.750 0.38% - 19s 0 2 115145.172 0 9 115585.000 115145.172 0.38% - 22s * 12 8 10 115488.00000 115223.381 0.23% 132 23s H 16 4 115313.40000 115237.565 0.07% 117 23s * 18 4 7 115309.00000 115237.565 0.06% 106 24s Cutting planes: Gomory: 2 Flow cover: 8 Explored 25 nodes (30065 simplex iterations) in 24.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.153090000000e+05, best bound 1.153090000000e+05, gap 0.0%