Build (method = -2) #dp: 3507 Step-3' Graph: 174 vertices and 514 arcs (0.02s) Step-4' Graph: 4 vertices and 174 arcs (0.02s) #V4/#V3 = 0.02 #A4/#A3 = 0.34 Ready! (0.02s) Optimize a model with 90 rows, 175 columns and 522 nonzeros Presolve removed 90 rows and 175 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 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 60 Solution: 1 x [73, 86] 1 x [45, 86] 1 x [56, 85] 1 x [56, 84] 1 x [4, 83] 1 x [3, 82] 1 x [56, 81] 1 x [47, 80] 1 x [32, 79] 1 x [9, 78] 1 x [5, 77] 1 x [4, 76] 1 x [3, 75] 1 x [72, 74] 1 x [44, 74] 1 x [56, 71] 1 x [55, 70] 1 x [52, 69] 1 x [51, 68] 1 x [47, 67] 1 x [32, 66] 1 x [24, 65] 1 x [22, 64] 1 x [20, 63] 1 x [19, 62] 1 x [18, 61] 1 x [17, 60] 1 x [15, 59] 1 x [13, 58] 1 x [12, 57] 1 x [43, 56] 1 x [42, 55] 1 x [9, 54] 1 x [5, 53] 1 x [41, 52] 1 x [40, 51] 1 x [4, 50] 1 x [3, 49] 1 x [2, 48] 1 x [39, 47] 1 x [1, 46] 1 x [32, 38] 1 x [29, 37] 1 x [24, 36] 1 x [22, 35] 1 x [21, 34] 1 x [20, 33] 1 x [19, 31] 1 x [18, 30] 1 x [17, 28] 1 x [15, 27] 1 x [13, 26] 1 x [12, 25] 1 x [10, 23] 1 x [9, 16] 1 x [5, 14] 1 x [4, 11] 1 x [3, 8] 1 x [2, 7] 1 x [1, 6]