Build (method = -2) #dp: 3086 Step-3' Graph: 80 vertices and 270 arcs (0.01s) Step-4' Graph: 40 vertices and 190 arcs (0.01s) #V4/#V3 = 0.50 #A4/#A3 = 0.70 Ready! (0.01s) Optimize a model with 118 rows, 191 columns and 498 nonzeros Presolve removed 51 rows and 51 columns Presolve time: 0.00s Presolved: 67 rows, 140 columns, 347 nonzeros Variable types: 0 continuous, 140 integer (9 binary) Found heuristic solution: objective 181.0000000 Found heuristic solution: objective 161.0000000 Found heuristic solution: objective 107.0000000 Optimize a model with 67 rows, 140 columns and 347 nonzeros Presolve removed 29 rows and 67 columns Root relaxation: infeasible, 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 1.070000000000e+02, best bound 1.070000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 107 Solution: 2 x [1, 78] 1 x [77] 2 x [2, 77] 1 x [1, 77] 2 x [76] 2 x [3, 76] 1 x [75] 1 x [4, 75] 3 x [74] 3 x [5, 73] 2 x [72] 2 x [6, 72] 1 x [7, 71] 2 x [8, 70] 2 x [9, 69] 2 x [10, 68] 1 x [11, 67] 3 x [12, 66] 3 x [11, 65] 3 x [14, 64] 2 x [7, 63] 1 x [14, 62] 1 x [13, 62] 3 x [15, 61] 2 x [16, 60] 1 x [18, 59] 2 x [17, 59] 1 x [7, 59] 2 x [19, 58] 4 x [21, 57] 1 x [20, 57] 2 x [20, 56] 3 x [23, 55] 1 x [22, 55] 3 x [54] 1 x [24, 54] 3 x [25, 53] 2 x [26, 52] 1 x [26, 51] 1 x [28, 50] 2 x [28, 49] 2 x [27, 48] 1 x [31, 47] 3 x [30, 47] 1 x [32, 46] 3 x [29, 46] 3 x [33, 45] 1 x [26, 45] 4 x [34, 44] 1 x [26, 44] 1 x [43] 1 x [35, 43] 2 x [36, 42] 1 x [41] 3 x [37, 40] 1 x [38, 39] 1 x [36, 36]