Build (method = -2) #dp: 256 Step-3' Graph: 37 vertices and 151 arcs (0.00s) Step-4' Graph: 17 vertices and 111 arcs (0.00s) #V4/#V3 = 0.46 #A4/#A3 = 0.74 Ready! (0.00s) Optimize a model with 37 rows, 112 columns and 309 nonzeros Presolve removed 12 rows and 17 columns Presolve time: 0.00s Presolved: 25 rows, 95 columns, 262 nonzeros Variable types: 0 continuous, 95 integer (3 binary) Found heuristic solution: objective 175.0000000 Found heuristic solution: objective 157.0000000 Optimize a model with 25 rows, 95 columns and 262 nonzeros Presolved: 25 rows, 95 columns, 262 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.300e+02 Factor NZ : 2.690e+02 Factor Ops : 3.509e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.92418827e+02 -9.55482195e+02 4.65e+02 1.33e-01 2.48e+01 0s 1 2.19978085e+02 -2.99357085e+02 4.34e+01 5.55e-16 3.81e+00 0s 2 1.35982966e+02 3.74395582e+01 1.93e-02 7.77e-16 4.96e-01 0s 3 1.06359916e+02 9.39507617e+01 1.05e-03 4.44e-16 6.24e-02 0s 4 1.03353568e+02 1.01638837e+02 3.66e-05 2.22e-16 8.62e-03 0s 5 1.03014646e+02 1.02975718e+02 2.41e-07 2.28e-16 1.96e-04 0s 6 1.03000001e+02 1.02999998e+02 1.32e-11 3.33e-16 1.40e-08 0s 7 1.03000000e+02 1.03000000e+02 2.75e-14 2.22e-16 1.40e-14 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.03000000e+02 Root relaxation: objective 1.030000e+02, 48 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 103.0000000 103.00000 0.0% - 0s Explored 0 nodes (48 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.030000000000e+02, best bound 1.030000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 103 Solution: 1 x [16] 16 x [12, 16] 1 x [6] 9 x [18] 3 x [17] 7 x [1, 20] 12 x [2, 14] 1 x [14, 19] 6 x [4, 14] 8 x [5, 10] 5 x [7, 10] 10 x [9, 11] 8 x [8, 11] 8 x [3, 3] 1 x [7, 8, 13] 3 x [1, 2, 9] 2 x [2, 15, 19] 2 x [2, 9, 9]