Build (method = -2) #dp: 263 Step-3' Graph: 40 vertices and 112 arcs (0.00s) Step-4' Graph: 4 vertices and 40 arcs (0.00s) #V4/#V3 = 0.10 #A4/#A3 = 0.36 Ready! (0.00s) Optimize a model with 23 rows, 41 columns and 120 nonzeros Presolve removed 23 rows and 41 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.000000000000e+02, best bound 1.000000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 100 Solution: 3 x [4, 5] 1 x [4, 19] 3 x [8, 18] 7 x [15, 19] 9 x [16, 19] 1 x [11, 19] 6 x [11, 17] 8 x [3, 8] 2 x [1, 2] 5 x [6, 10] 17 x [2, 14] 4 x [12, 13] 1 x [8, 12] 13 x [9, 17] 20 x [7, 13]