Build (method = -2) #dp: 268 Step-3' Graph: 29 vertices and 120 arcs (0.00s) Step-4' Graph: 19 vertices and 100 arcs (0.00s) #V4/#V3 = 0.66 #A4/#A3 = 0.83 Ready! (0.00s) Optimize a model with 39 rows, 101 columns and 272 nonzeros Presolve removed 11 rows and 12 columns Presolve time: 0.00s Presolved: 28 rows, 89 columns, 230 nonzeros Variable types: 0 continuous, 89 integer (0 binary) Found heuristic solution: objective 1998.0000000 Found heuristic solution: objective 1868.0000000 Found heuristic solution: objective 1715.0000000 Optimize a model with 28 rows, 89 columns and 230 nonzeros Presolved: 28 rows, 89 columns, 230 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.090e+02 Factor NZ : 2.810e+02 Factor Ops : 3.419e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.90896243e+03 -1.26113470e+04 1.50e+04 2.22e-16 4.11e+02 0s 1 3.20197688e+03 -4.12357488e+03 1.83e+03 3.89e-16 6.54e+01 0s 2 1.58113765e+03 -3.48981501e+00 1.63e-13 8.88e-16 8.38e+00 0s 3 1.12119346e+03 8.14084636e+02 2.27e-13 2.22e-16 1.62e+00 0s 4 1.02477190e+03 9.80593425e+02 6.29e-13 2.22e-16 2.34e-01 0s 5 1.01328188e+03 9.95915666e+02 9.06e-13 1.11e-16 9.19e-02 0s 6 1.01012231e+03 1.00625948e+03 7.96e-13 2.22e-16 2.04e-02 0s 7 1.00956919e+03 1.00901018e+03 5.12e-13 1.58e-16 2.96e-03 0s 8 1.00950007e+03 1.00949951e+03 1.25e-13 2.22e-16 2.97e-06 0s 9 1.00950000e+03 1.00950000e+03 1.71e-13 1.51e-16 2.97e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.00950000e+03 Root relaxation: objective 1.009500e+03, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1009.50000 0 1 1715.00000 1009.50000 41.1% - 0s H 0 0 1010.0000000 1009.50000 0.05% - 0s Explored 0 nodes (30 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.010000000000e+03, best bound 1.010000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1010 Solution: 139 x [19] 17 x [5, 13] 146 x [12, 16] 50 x [13, 16] 85 x [1, 15] 9 x [2, 18] 136 x [9, 18] 1 x [13, 18] 17 x [14, 15] 57 x [8, 10] 87 x [6, 8] 18 x [8, 15] 63 x [4, 20] 21 x [2, 20] 1 x [7] 65 x [3, 7, 17] 43 x [7, 7] 20 x [3, 11, 13] 10 x [2, 12, 13] 25 x [2, 3, 13]