Build (method = -2) #dp: 586 Step-3' Graph: 47 vertices and 246 arcs (0.00s) Step-4' Graph: 27 vertices and 206 arcs (0.00s) #V4/#V3 = 0.57 #A4/#A3 = 0.84 Ready! (0.00s) Optimize a model with 67 rows, 207 columns and 574 nonzeros Presolve removed 32 rows and 46 columns Presolve time: 0.00s Presolved: 35 rows, 161 columns, 444 nonzeros Variable types: 0 continuous, 161 integer (0 binary) Found heuristic solution: objective 3431.0000000 Found heuristic solution: objective 3078.0000000 Optimize a model with 35 rows, 161 columns and 444 nonzeros Presolved: 35 rows, 161 columns, 444 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.890e+02 Factor NZ : 4.690e+02 Factor Ops : 7.413e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.23965359e+04 -1.88048572e+04 4.36e+04 2.22e-16 4.20e+02 0s 1 5.32411630e+03 -7.35911066e+03 6.48e+03 1.22e-15 7.69e+01 0s 2 3.29868125e+03 2.15458091e+02 1.42e+02 8.22e-15 9.66e+00 0s 3 2.67208238e+03 2.08084065e+03 3.92e+00 9.99e-16 1.77e+00 0s 4 2.50688524e+03 2.43574238e+03 2.17e-01 6.66e-16 2.13e-01 0s 5 2.48921784e+03 2.48800410e+03 1.01e-03 1.15e-15 3.62e-03 0s 6 2.48900000e+03 2.48899990e+03 2.52e-09 9.54e-16 3.14e-07 0s 7 2.48900000e+03 2.48900000e+03 9.09e-13 8.16e-16 4.02e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.48900000e+03 Root relaxation: objective 2.489000e+03, 62 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2489.0000000 2489.00000 0.0% - 0s Explored 0 nodes (62 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.489000000000e+03, best bound 2.489000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 2489 Solution: 157 x [14] 111 x [4, 28] 18 x [12] 8 x [12, 28] 60 x [28, 36] 179 x [35] 139 x [34] 36 x [34, 39] 14 x [33, 39] 36 x [5, 29] 120 x [25] 23 x [5, 24] 190 x [22] 100 x [7, 18] 65 x [17, 19] 29 x [5, 17] 110 x [13, 19] 1 x [9] 75 x [9, 26] 3 x [7, 9] 97 x [5, 8] 1 x [27] 45 x [20, 27] 8 x [5, 27] 74 x [1, 32] 12 x [38] 22 x [32, 38] 161 x [37] 66 x [3, 31] 26 x [2, 31] 15 x [3, 15] 107 x [11, 21] 64 x [3, 11] 16 x [10, 30] 77 x [30, 40] 103 x [16, 40] 25 x [16, 30] 4 x [16, 23] 11 x [16, 21] 81 x [6, 6]