Build (method = -2) #dp: 674 Step-3' Graph: 90 vertices and 376 arcs (0.00s) Step-4' Graph: 73 vertices and 341 arcs (0.00s) #V4/#V3 = 0.81 #A4/#A3 = 0.91 Ready! (0.00s) Optimize a model with 93 rows, 342 columns and 884 nonzeros Presolve removed 16 rows and 21 columns Presolve time: 0.00s Presolved: 77 rows, 321 columns, 836 nonzeros Variable types: 0 continuous, 321 integer (0 binary) Found heuristic solution: objective 167.0000000 Optimize a model with 77 rows, 321 columns and 836 nonzeros Presolved: 77 rows, 321 columns, 836 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.040e+02 Factor NZ : 1.686e+03 Factor Ops : 4.413e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.24941491e+02 -5.71735458e+03 5.60e+03 2.22e-16 6.31e+01 0s 1 3.66002854e+02 -2.59420991e+03 9.16e+02 4.44e-16 1.19e+01 0s 2 2.03632635e+02 -7.16689840e+02 6.18e+01 7.38e-15 1.74e+00 0s 3 1.71461336e+02 -1.43287506e+02 7.02e-01 4.11e-15 4.85e-01 0s 4 1.42656078e+02 -9.67875021e-01 1.14e-01 3.82e-15 2.21e-01 0s 5 1.24107323e+02 5.46805275e+01 3.73e-02 3.79e-15 1.07e-01 0s 6 1.15674425e+02 8.90703753e+01 1.35e-02 3.71e-15 4.09e-02 0s 7 1.09950653e+02 1.03721288e+02 2.99e-03 3.34e-15 9.57e-03 0s 8 1.08662201e+02 1.08039366e+02 2.60e-04 4.54e-15 9.57e-04 0s 9 1.08501167e+02 1.08498247e+02 6.80e-07 3.16e-15 4.49e-06 0s 10 1.08500001e+02 1.08499998e+02 9.24e-14 3.29e-15 4.49e-09 0s 11 1.08500000e+02 1.08500000e+02 1.74e-13 2.95e-15 4.49e-12 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 1.08500000e+02 Root relaxation: objective 1.085000e+02, 108 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 108.50000 0 3 167.00000 108.50000 35.0% - 0s H 0 0 109.0000000 108.50000 0.46% - 0s Explored 0 nodes (163 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.090000000000e+02, best bound 1.090000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 109 Solution: 4 x [15] 7 x [15, 18] 1 x [12] 12 x [10, 12] 13 x [9] 15 x [1, 19] 8 x [5, 11] 1 x [2, 5] 2 x [4] 12 x [4, 8] 3 x [6, 16] 2 x [6, 16, 18] 1 x [13, 20] 9 x [7, 14] 4 x [7, 20] 1 x [6, 7, 20] 8 x [3, 17] 4 x [17, 20] 1 x [3] 1 x [3, 3]