Build (method = -2) #dp: 4511 Step-3' Graph: 843 vertices and 2522 arcs (0.03s) Step-4' Graph: 376 vertices and 1588 arcs (0.04s) #V4/#V3 = 0.45 #A4/#A3 = 0.63 Ready! (0.04s) Optimize a model with 416 rows, 1589 columns and 4019 nonzeros Presolve removed 86 rows and 143 columns Presolve time: 0.02s Presolved: 330 rows, 1446 columns, 3940 nonzeros Variable types: 0 continuous, 1446 integer (0 binary) Found heuristic solution: objective 2811.0000000 Optimize a model with 330 rows, 1446 columns and 3940 nonzeros Presolved: 330 rows, 1446 columns, 3940 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.635e+03 Factor NZ : 1.050e+04 Factor Ops : 4.872e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.72970739e+04 -3.16768071e+05 6.07e+05 2.22e-16 1.20e+03 0s 1 8.67163286e+03 -1.55300712e+05 8.59e+04 7.38e-15 1.97e+02 0s 2 4.50277217e+03 -6.09434322e+04 1.41e+04 4.11e-15 4.27e+01 0s 3 3.20124320e+03 -1.38793303e+04 1.30e+03 1.64e-14 7.24e+00 0s 4 2.89433282e+03 -5.09812808e+03 4.26e+02 4.44e-15 3.05e+00 0s 5 2.65622367e+03 -3.00745405e+03 1.67e+02 5.16e-15 2.04e+00 0s 6 2.39816655e+03 -7.27148241e+02 8.10e+01 5.39e-15 1.11e+00 0s 7 2.28806433e+03 2.81979035e+02 4.90e+01 5.88e-15 7.07e-01 0s 8 2.05906661e+03 1.02997229e+03 7.15e+00 5.33e-15 3.56e-01 0s 9 1.93069875e+03 1.65767231e+03 1.05e+00 4.06e-15 9.41e-02 0s 10 1.90770611e+03 1.86265664e+03 1.18e-01 4.03e-15 1.55e-02 0s 11 1.90536459e+03 1.90445830e+03 8.86e-05 3.78e-15 3.11e-04 0s 12 1.90500009e+03 1.90499978e+03 2.99e-08 3.50e-15 1.06e-07 0s 13 1.90500000e+03 1.90500000e+03 2.81e-12 3.94e-15 1.27e-13 0s Barrier solved model in 13 iterations and 0.02 seconds Optimal objective 1.90500000e+03 Root relaxation: objective 1.905000e+03, 745 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1905.0000000 1905.00000 0.0% - 0s Explored 0 nodes (745 simplex iterations) in 0.07 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.905000000000e+03, best bound 1.905000000000e+03, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.07 seconds Total run time: 0.12 seconds Objective: 1905 Solution: 18 x [1, 28] 58 x [2] 27 x [2, 30] 61 x [2, 31] 1 x [2, 32] 23 x [2, 32, 38] 47 x [2, 34] 71 x [3, 31] 14 x [3, 34] 34 x [4, 27] 14 x [5, 32] 54 x [5, 33] 14 x [5, 35] 11 x [6] 102 x [6, 28] 14 x [6, 30] 92 x [7] 66 x [7, 25] 11 x [7, 31] 3 x [7, 31, 40] 5 x [7, 35, 40] 14 x [8, 27, 36] 18 x [8, 32] 14 x [8, 32, 38] 11 x [9] 20 x [9, 23] 34 x [9, 25] 83 x [9, 27] 14 x [9, 28] 16 x [9, 29, 40] 11 x [10] 119 x [10, 24] 57 x [10, 25] 14 x [10, 27] 21 x [10, 33, 34] 31 x [11] 107 x [11, 30, 37] 14 x [11, 31, 35] 11 x [12] 20 x [12, 22] 58 x [12, 24] 14 x [12, 28] 1 x [12, 28, 39, 40] 4 x [12, 28, 40] 27 x [12, 32, 35] 76 x [12, 32, 35, 37] 28 x [13, 21] 14 x [14] 5 x [14, 21] 14 x [14, 31] 4 x [14, 31, 40] 6 x [14, 39] 10 x [15, 31] 40 x [16, 20] 11 x [16, 26] 23 x [16, 29] 14 x [16, 30, 34] 135 x [17, 19] 43 x [18, 19] 9 x [18, 31, 35]