Build (method = -2) #dp: 1788 Step-3' Graph: 72 vertices and 230 arcs (0.01s) Step-4' Graph: 17 vertices and 120 arcs (0.01s) #V4/#V3 = 0.24 #A4/#A3 = 0.52 Ready! (0.01s) Optimize a model with 75 rows, 121 columns and 334 nonzeros Presolve removed 43 rows and 51 columns Presolve time: 0.00s Presolved: 32 rows, 70 columns, 181 nonzeros Variable types: 0 continuous, 70 integer (8 binary) Found heuristic solution: objective 80.0000000 Found heuristic solution: objective 65.0000000 Found heuristic solution: objective 50.0000000 Optimize a model with 32 rows, 70 columns and 181 nonzeros Presolved: 32 rows, 70 columns, 181 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.100e+01 Factor NZ : 3.390e+02 Factor Ops : 4.825e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.49330056e+02 -7.57426986e+02 4.33e+01 2.22e-16 3.68e+01 0s 1 2.28725843e+02 -2.62299729e+02 7.52e+00 6.66e-16 5.47e+00 0s 2 7.31183485e+01 -1.57135996e+01 1.95e-14 6.66e-16 5.66e-01 0s 3 5.44485786e+01 2.89244115e+01 1.69e-14 6.66e-16 1.63e-01 0s 4 5.02325880e+01 4.87487480e+01 1.95e-14 3.33e-16 9.45e-03 0s 5 5.00002554e+01 4.99990948e+01 4.62e-14 4.44e-16 7.39e-06 0s Barrier performed 5 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds 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 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 50 Solution: 2 x [20, 58] 3 x [17, 57] 1 x [11, 56] 1 x [22, 55] 1 x [10, 55] 3 x [14, 54] 1 x [9, 53] 3 x [23, 52] 1 x [24, 51] 2 x [21, 51] 1 x [23, 50] 1 x [8, 49] 1 x [7, 48] 2 x [25, 47] 1 x [27, 46] 1 x [26, 45] 1 x [6, 44] 2 x [28, 43] 1 x [29, 42] 1 x [30, 41] 2 x [31, 40] 1 x [5, 40] 1 x [32, 39] 1 x [4, 39] 3 x [33, 38] 1 x [3, 38] 1 x [2, 37] 1 x [34, 36] 1 x [1, 35] 2 x [13, 19] 1 x [12, 18] 1 x [8, 17] 1 x [7, 16] 1 x [6, 15] 1 x [5, 13] 1 x [1, 12]