Build (method = -2) #dp: 1494 Step-3' Graph: 62 vertices and 227 arcs (0.01s) Step-4' Graph: 11 vertices and 125 arcs (0.01s) #V4/#V3 = 0.18 #A4/#A3 = 0.55 Ready! (0.01s) Optimize a model with 71 rows, 126 columns and 361 nonzeros Presolve removed 13 rows and 13 columns Presolve time: 0.00s Presolved: 58 rows, 113 columns, 324 nonzeros Variable types: 0 continuous, 113 integer (0 binary) Found heuristic solution: objective 4479.0000000 Found heuristic solution: objective 3962.0000000 Found heuristic solution: objective 3720.0000000 Optimize a model with 58 rows, 113 columns and 324 nonzeros Presolved: 58 rows, 113 columns, 324 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.130e+02 Factor NZ : 8.300e+02 Factor Ops : 1.597e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.56754997e+04 -1.99283295e+04 7.87e+03 5.55e-17 6.69e+02 0s 1 9.27740504e+03 -5.29984164e+03 5.33e+02 3.33e-16 7.39e+01 0s 2 3.11155494e+03 2.72895746e+02 2.37e+00 6.66e-16 1.04e+01 0s 3 2.28507874e+03 1.97675447e+03 9.77e-02 2.22e-16 1.12e+00 0s 4 2.24155726e+03 2.23889748e+03 4.89e-12 3.33e-16 9.67e-03 0s 5 2.24100000e+03 2.24099996e+03 6.25e-13 3.62e-16 1.54e-07 0s 6 2.24100000e+03 2.24100000e+03 9.66e-13 3.33e-16 1.56e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.24100000e+03 Root relaxation: objective 2.241000e+03, 72 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2241.0000000 2241.00000 0.0% - 0s Explored 0 nodes (72 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.241000000000e+03, best bound 2.241000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 2241 Solution: 20 x [11, 49] 33 x [20, 49] 5 x [34, 60] 2 x [51, 60] 14 x [49, 60] 31 x [29, 49] 85 x [14, 41] 7 x [15, 50] 5 x [32, 44] 1 x [8, 44] 10 x [5, 44] 80 x [1, 10] 77 x [5, 39] 3 x [6, 33] 18 x [16, 33] 84 x [42, 47] 93 x [28, 56] 80 x [2, 3] 5 x [3, 28] 1 x [3, 12] 25 x [26, 53] 8 x [21, 26] 1 x [1, 26] 5 x [26, 43] 86 x [17, 30] 2 x [1, 30] 70 x [19, 36] 96 x [4, 7] 1 x [1, 36] 93 x [27, 43] 77 x [23, 51] 82 x [21, 55] 94 x [6, 54] 81 x [8, 37] 73 x [12, 45] 91 x [13, 18] 93 x [32, 59] 79 x [35, 52] 72 x [24, 53] 67 x [25, 38] 2 x [12, 38] 87 x [34, 40] 69 x [9, 57] 77 x [50, 58] 70 x [22, 48] 1 x [46, 48] 3 x [5, 48] 82 x [31, 46]