Build (method = -2) #dp: 203 Step-3' Graph: 60 vertices and 173 arcs (0.00s) Step-4' Graph: 20 vertices and 93 arcs (0.00s) #V4/#V3 = 0.33 #A4/#A3 = 0.54 Ready! (0.00s) Optimize a model with 40 rows, 94 columns and 246 nonzeros Presolve removed 11 rows and 19 columns Presolve time: 0.00s Presolved: 29 rows, 75 columns, 194 nonzeros Variable types: 0 continuous, 75 integer (0 binary) Found heuristic solution: objective 143.0000000 Found heuristic solution: objective 133.0000000 Optimize a model with 29 rows, 75 columns and 194 nonzeros Presolved: 29 rows, 75 columns, 194 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.040e+02 Factor NZ : 3.050e+02 Factor Ops : 3.875e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.50104223e+02 -9.28238710e+02 9.04e+02 2.22e-16 3.45e+01 0s 1 2.52588707e+02 -2.88135149e+02 7.11e+01 6.66e-16 4.78e+00 0s 2 1.50566467e+02 -1.95588223e+01 2.22e+00 1.33e-15 1.08e+00 0s 3 1.20047848e+02 8.38642707e+01 9.57e-02 6.66e-16 2.25e-01 0s 4 1.12927815e+02 1.06262023e+02 1.10e-02 3.64e-16 4.14e-02 0s 5 1.12027357e+02 1.11936217e+02 2.54e-04 5.52e-16 5.66e-04 0s 6 1.12000000e+02 1.11999999e+02 1.73e-09 3.50e-16 5.56e-09 0s 7 1.12000000e+02 1.12000000e+02 5.33e-14 4.19e-16 8.95e-15 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.12000000e+02 Root relaxation: objective 1.120000e+02, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 112.0000000 112.00000 0.0% - 0s Explored 0 nodes (40 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.120000000000e+02, best bound 1.120000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 112 Solution: 19 x [1] 4 x [2] 10 x [3] 3 x [3, 18] 14 x [4, 19] 2 x [5, 15] 4 x [5, 16] 8 x [6, 15] 3 x [7, 11] 4 x [8, 11] 5 x [9, 11] 2 x [10, 12] 5 x [11, 12] 15 x [12, 14] 1 x [13, 17] 3 x [13, 17, 19] 1 x [13, 17, 20] 3 x [14, 15] 6 x [15, 17, 18]