Build (method = -2) #dp: 171 Step-3' Graph: 36 vertices and 101 arcs (0.00s) Step-4' Graph: 15 vertices and 59 arcs (0.00s) #V4/#V3 = 0.42 #A4/#A3 = 0.58 Ready! (0.00s) Optimize a model with 34 rows, 60 columns and 154 nonzeros Presolve removed 13 rows and 14 columns Presolve time: 0.00s Presolved: 21 rows, 46 columns, 115 nonzeros Variable types: 0 continuous, 46 integer (0 binary) Found heuristic solution: objective 1619.0000000 Found heuristic solution: objective 1576.0000000 Found heuristic solution: objective 1481.0000000 Optimize a model with 21 rows, 46 columns and 115 nonzeros Presolved: 21 rows, 46 columns, 115 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.900e+01 Factor NZ : 1.830e+02 Factor Ops : 2.015e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.78910369e+03 -7.26291659e+03 4.87e+03 2.22e-16 2.96e+02 0s 1 2.20760693e+03 -1.29642813e+03 4.25e+02 6.11e-16 4.45e+01 0s 2 1.56691583e+03 4.49350658e+02 1.55e+01 5.00e-16 1.13e+01 0s 3 1.32956909e+03 1.09998835e+03 5.62e-02 3.05e-16 2.30e+00 0s 4 1.24550888e+03 1.22007159e+03 4.29e-03 2.45e-16 2.54e-01 0s 5 1.23622966e+03 1.23486889e+03 7.48e-05 2.22e-16 1.36e-02 0s 6 1.23600000e+03 1.23599998e+03 6.74e-10 3.18e-16 2.19e-07 0s 7 1.23600000e+03 1.23600000e+03 6.82e-13 5.55e-16 2.23e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.23600000e+03 Root relaxation: objective 1.236000e+03, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1236.0000000 1236.00000 0.0% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.236000000000e+03, best bound 1.236000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1236 Solution: 157 x [1] 47 x [2, 19] 166 x [3] 11 x [3, 18] 4 x [4, 18] 90 x [4, 19] 24 x [5, 17] 149 x [6] 62 x [6, 15] 62 x [7, 17] 26 x [8, 15] 90 x [8, 16] 4 x [8, 17] 104 x [9, 11] 12 x [9, 12] 17 x [9, 13] 58 x [10, 13] 112 x [12, 13] 41 x [12, 14]