Build (method = -2) #dp: 742 Step-3' Graph: 179 vertices and 530 arcs (0.00s) Step-4' Graph: 40 vertices and 252 arcs (0.00s) #V4/#V3 = 0.22 #A4/#A3 = 0.48 Ready! (0.01s) Optimize a model with 80 rows, 253 columns and 683 nonzeros Presolve removed 22 rows and 32 columns Presolve time: 0.00s Presolved: 58 rows, 221 columns, 599 nonzeros Variable types: 0 continuous, 221 integer (0 binary) Found heuristic solution: objective 3840.0000000 Found heuristic solution: objective 3214.0000000 Optimize a model with 58 rows, 221 columns and 599 nonzeros Presolved: 58 rows, 221 columns, 599 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.050e+02 Factor NZ : 8.890e+02 Factor Ops : 1.684e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.64167394e+04 -4.61847544e+04 1.08e+05 2.22e-16 7.96e+02 0s 1 8.20711143e+03 -1.78116187e+04 1.39e+04 5.55e-16 1.26e+02 0s 2 3.40630420e+03 -3.77019239e+03 2.95e+02 8.88e-16 1.65e+01 0s 3 2.60119780e+03 1.55609732e+01 1.69e+01 4.44e-16 5.62e+00 0s 4 2.19747733e+03 1.52844700e+03 8.59e-01 3.33e-16 1.45e+00 0s 5 2.05413453e+03 1.84759718e+03 1.50e-01 2.22e-16 4.47e-01 0s 6 2.03186320e+03 2.00966796e+03 3.73e-02 3.52e-16 4.81e-02 0s 7 2.02617967e+03 2.02563765e+03 2.16e-04 3.13e-16 1.17e-03 0s 8 2.02600018e+03 2.02599964e+03 7.05e-13 3.33e-16 1.17e-06 0s 9 2.02600000e+03 2.02600000e+03 3.41e-12 3.33e-16 1.18e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.02600000e+03 Root relaxation: objective 2.026000e+03, 101 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2026.0000000 2026.00000 0.0% - 0s Explored 0 nodes (101 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.026000000000e+03, best bound 2.026000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2026 Solution: 141 x [1] 35 x [2] 5 x [2, 39] 95 x [2, 40] 164 x [3] 56 x [4, 38] 27 x [5, 38] 163 x [6, 37] 23 x [7, 34] 73 x [8, 33] 69 x [9, 33] 53 x [10, 32] 8 x [11, 32] 10 x [11, 33] 13 x [11, 34] 14 x [12, 29] 49 x [12, 31] 35 x [13, 27] 42 x [14, 27] 126 x [14, 29] 18 x [15, 23] 72 x [16, 23] 3 x [17, 22] 51 x [17, 23] 7 x [18, 22] 48 x [19, 20] 9 x [19, 21] 60 x [19, 24] 113 x [21, 26] 70 x [22, 23] 68 x [22, 25] 18 x [26, 30] 58 x [27, 31, 39] 18 x [28, 35, 37] 9 x [29, 35, 37] 4 x [29, 36, 37] 38 x [29, 36, 38] 70 x [30, 34, 36] 1 x [30, 34, 37] 90 x [31, 34, 36]