Build (method = -2) #dp: 429 Step-3' Graph: 35 vertices and 115 arcs (0.00s) Step-4' Graph: 14 vertices and 73 arcs (0.00s) #V4/#V3 = 0.40 #A4/#A3 = 0.63 Ready! (0.00s) Optimize a model with 49 rows, 74 columns and 198 nonzeros Presolve removed 34 rows and 36 columns Presolve time: 0.00s Presolved: 15 rows, 38 columns, 92 nonzeros Variable types: 0 continuous, 38 integer (11 binary) Found heuristic solution: objective 38.0000000 Found heuristic solution: objective 30.0000000 Optimize a model with 15 rows, 38 columns and 92 nonzeros Presolved: 15 rows, 38 columns, 92 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.700e+01 Factor NZ : 1.200e+02 Factor Ops : 1.240e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.93593630e+02 -1.83961907e+02 3.88e+01 1.11e-16 1.02e+01 0s 1 5.52387664e+01 -3.58694933e+01 2.52e+00 2.66e-15 1.35e+00 0s 2 3.74431474e+01 8.21408367e+00 2.04e-01 3.44e-15 3.69e-01 0s 3 2.92143688e+01 2.60697285e+01 6.76e-03 2.00e-15 3.93e-02 0s 4 2.85240454e+01 2.84121364e+01 1.76e-06 1.33e-15 1.40e-03 0s 5 2.85000140e+01 2.84999951e+01 1.05e-10 2.11e-15 2.36e-07 0s 6 2.85000000e+01 2.85000000e+01 1.11e-14 1.78e-15 2.45e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.85000000e+01 Root relaxation: objective 2.850000e+01, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 28.50000 0 2 30.00000 28.50000 5.00% - 0s H 0 0 29.0000000 28.50000 1.72% - 0s Explored 0 nodes (20 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 29 Solution: 2 x [35] 1 x [34] 1 x [33] 1 x [32] 1 x [31] 1 x [30] 1 x [1, 30] 1 x [3, 29] 1 x [2, 28] 1 x [7, 27] 1 x [6, 26] 3 x [4, 25] 2 x [8, 24] 1 x [9, 23] 1 x [12, 22] 2 x [5, 21] 1 x [2, 20] 1 x [13, 19] 1 x [18] 2 x [4, 17] 1 x [15, 16] 1 x [2, 14] 1 x [10, 11]