Build (method = -2) #dp: 8084 Step-3' Graph: 523 vertices and 3453 arcs (0.04s) Step-4' Graph: 509 vertices and 3425 arcs (0.04s) #V4/#V3 = 0.97 #A4/#A3 = 0.99 Ready! (0.04s) Optimize a model with 548 rows, 3426 columns and 9293 nonzeros Presolve removed 72 rows and 118 columns Presolve time: 0.04s Presolved: 476 rows, 3308 columns, 9117 nonzeros Variable types: 0 continuous, 3308 integer (31 binary) Found heuristic solution: objective 3760.0000000 Found heuristic solution: objective 3432.0000000 Found heuristic solution: objective 3346.0000000 Optimize a model with 476 rows, 3308 columns and 9117 nonzeros Presolved: 476 rows, 3308 columns, 9117 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.704e+03 Factor NZ : 3.012e+04 (roughly 2 MBytes of memory) Factor Ops : 3.359e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.10562979e+04 -7.12284267e+05 3.30e+05 2.22e-16 9.75e+02 0s 1 1.00283943e+04 -4.05028667e+05 6.91e+04 7.77e-16 2.29e+02 0s 2 5.60944470e+03 -1.33595252e+05 1.47e+04 2.66e-15 4.98e+01 0s 3 4.20425466e+03 -4.31673029e+04 1.98e+03 3.11e-15 1.01e+01 0s 4 3.98139762e+03 -1.07826773e+04 1.74e+02 1.02e-14 2.39e+00 0s 5 3.89766021e+03 -4.98775791e+03 2.95e+01 6.22e-15 1.36e+00 0s 6 3.77700479e+03 -4.77461563e+03 2.25e+01 6.11e-15 1.30e+00 0s 7 3.45924838e+03 -2.74305268e+03 1.61e+01 4.22e-15 9.43e-01 0s 8 2.97753414e+03 -5.75323991e+02 1.04e+01 2.55e-15 5.40e-01 0s 9 2.53575301e+03 4.81406792e+02 6.04e+00 1.33e-15 3.12e-01 0s 10 2.23788315e+03 9.47354197e+02 3.48e+00 6.66e-16 1.96e-01 0s 11 2.07646902e+03 1.16901977e+03 1.86e+00 4.56e-16 1.37e-01 0s 12 1.91667434e+03 1.62741798e+03 5.08e-01 3.33e-16 4.37e-02 0s 13 1.88274128e+03 1.80350181e+03 2.35e-01 3.73e-16 1.20e-02 0s 14 1.85668580e+03 1.84840340e+03 1.68e-02 4.09e-16 1.25e-03 0s 15 1.85400696e+03 1.85397841e+03 4.17e-11 4.40e-16 4.30e-06 0s 16 1.85400001e+03 1.85399998e+03 6.32e-11 4.07e-16 4.30e-09 0s 17 1.85400000e+03 1.85400000e+03 5.76e-11 4.08e-16 4.30e-12 0s 18 1.85400000e+03 1.85400000e+03 1.59e-12 4.81e-16 4.30e-15 0s Barrier solved model in 18 iterations and 0.10 seconds Optimal objective 1.85400000e+03 Root relaxation: objective 1.854000e+03, 1656 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1854.0000000 1854.00000 0.0% - 0s Explored 0 nodes (1656 simplex iterations) in 0.20 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.854000000000e+03, best bound 1.854000000000e+03, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.20 seconds Total run time: 0.26 seconds Objective: 1854 Solution: 12 x [3] 10 x [3, 26] 20 x [33, 37] 89 x [35, 39] 49 x [29, 35] 38 x [29, 31] 33 x [9] 3 x [9, 33] 26 x [9, 26] 46 x [9, 19] 79 x [4, 20] 1 x [20, 33] 28 x [20, 25] 64 x [4, 10] 30 x [1, 10] 84 x [10, 19, 39] 71 x [10, 33] 25 x [10, 27, 33] 119 x [10, 25] 53 x [12, 22] 100 x [12, 27, 33] 29 x [12, 26] 53 x [28, 38] 35 x [28, 36] 72 x [28, 34] 25 x [28, 30] 10 x [23, 28] 64 x [23, 24] 47 x [21, 26] 9 x [16, 21, 26] 53 x [8, 18] 21 x [13, 15] 99 x [8, 15] 1 x [6, 15] 29 x [15, 29] 5 x [7, 38] 47 x [7, 17, 26] 13 x [5, 8] 118 x [5, 23] 1 x [5, 11, 23] 30 x [5, 11, 11, 23] 6 x [1, 5] 29 x [5, 14, 16] 18 x [2] 60 x [2, 32]