Build (method = -2) #dp: 168 Step-3' Graph: 37 vertices and 104 arcs (0.00s) Step-4' Graph: 16 vertices and 62 arcs (0.00s) #V4/#V3 = 0.43 #A4/#A3 = 0.60 Ready! (0.00s) Optimize a model with 36 rows, 63 columns and 161 nonzeros Presolve removed 17 rows and 20 columns Presolve time: 0.00s Presolved: 19 rows, 43 columns, 107 nonzeros Variable types: 0 continuous, 43 integer (0 binary) Found heuristic solution: objective 766.0000000 Found heuristic solution: objective 704.0000000 Optimize a model with 19 rows, 43 columns and 107 nonzeros Presolved: 19 rows, 43 columns, 107 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.200e+01 Factor NZ : 1.420e+02 Factor Ops : 1.270e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.73665942e+03 -2.85675347e+03 2.24e+03 1.11e-16 1.49e+02 0s 1 8.54219971e+02 -7.09982598e+02 5.51e+01 3.89e-16 1.86e+01 0s 2 7.71970133e+02 -6.85065359e+00 5.19e+00 3.89e-16 8.55e+00 0s 3 6.96547195e+02 4.89838500e+02 8.26e-02 3.05e-16 2.25e+00 0s 4 6.58739196e+02 6.21008441e+02 1.10e-02 2.29e-16 4.10e-01 0s 5 6.48069493e+02 6.47440373e+02 3.62e-04 1.61e-16 6.84e-03 0s 6 6.48000002e+02 6.47999993e+02 2.89e-09 2.48e-16 9.96e-08 0s 7 6.48000000e+02 6.48000000e+02 1.03e-12 3.33e-16 1.01e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 6.48000000e+02 Root relaxation: objective 6.480000e+02, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 648.0000000 648.00000 0.0% - 0s Explored 0 nodes (27 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.480000000000e+02, best bound 6.480000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 648 Solution: 24 x [16] 67 x [6] 54 x [3] 25 x [13] 16 x [17] 13 x [8, 17] 29 x [8, 19] 68 x [20] 1 x [7, 20] 11 x [7, 12] 56 x [18] 23 x [7, 18] 55 x [9, 14] 31 x [9, 10, 14] 25 x [5] 23 x [11] 42 x [11, 15] 1 x [1] 62 x [1, 4] 8 x [1, 7, 14] 14 x [1, 2]