Build (method = -2) #dp: 118 Step-3' Graph: 18 vertices and 56 arcs (0.00s) Step-4' Graph: 7 vertices and 34 arcs (0.00s) #V4/#V3 = 0.39 #A4/#A3 = 0.61 Ready! (0.00s) Optimize a model with 27 rows, 35 columns and 96 nonzeros Presolve removed 19 rows and 22 columns Presolve time: 0.00s Presolved: 8 rows, 13 columns, 34 nonzeros Variable types: 0 continuous, 13 integer (0 binary) Found heuristic solution: objective 664.0000000 Found heuristic solution: objective 592.0000000 Optimize a model with 8 rows, 13 columns and 34 nonzeros Presolve removed 1 rows and 1 columns Presolved: 7 rows, 12 columns, 32 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.100e+01 Factor NZ : 2.800e+01 Factor Ops : 1.400e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.85833715e+02 2.19759115e+01 1.94e+01 5.55e-17 3.05e+01 0s 1 5.32727827e+02 4.22916420e+02 2.65e-02 1.11e-16 3.94e+00 0s 2 4.85658300e+02 4.79321497e+02 3.06e-04 1.11e-16 2.26e-01 0s 3 4.84501212e+02 4.84494876e+02 1.42e-14 1.11e-16 2.26e-04 0s 4 4.84500001e+02 4.84499995e+02 2.13e-14 7.68e-17 2.26e-07 0s 5 4.84500000e+02 4.84500000e+02 2.84e-14 2.22e-16 2.27e-13 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 4.84500000e+02 Root relaxation: objective 4.845000e+02, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 484.50000 0 2 592.00000 484.50000 18.2% - 0s H 0 0 485.0000000 484.50000 0.10% - 0s Explored 0 nodes (8 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.850000000000e+02, best bound 4.850000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 485 Solution: 8 x [12] 42 x [7] 47 x [15] 46 x [4] 1 x [9] 21 x [8] 32 x [3, 17] 5 x [14] 14 x [14, 17] 36 x [5] 32 x [1, 17] 29 x [10, 13] 1 x [11] 3 x [11, 16] 4 x [10, 11] 6 x [6, 11] 23 x [6, 18] 17 x [16, 20] 42 x [6, 19] 26 x [2, 6] 50 x [10, 16]