Build (method = -2) #dp: 4386 Step-3' Graph: 95 vertices and 886 arcs (0.02s) Step-4' Graph: 94 vertices and 884 arcs (0.02s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.02s) Optimize a model with 114 rows, 885 columns and 2503 nonzeros Presolve removed 3 rows and 3 columns Presolve time: 0.00s Presolved: 111 rows, 882 columns, 2496 nonzeros Variable types: 0 continuous, 882 integer (0 binary) Found heuristic solution: objective 1481.0000000 Found heuristic solution: objective 1203.0000000 Optimize a model with 111 rows, 882 columns and 2496 nonzeros Presolved: 111 rows, 882 columns, 2496 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.562e+03 Factor NZ : 3.609e+03 Factor Ops : 1.423e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.80165763e+04 -1.07438140e+05 7.76e+04 2.22e-16 5.73e+02 0s 1 4.88344627e+03 -5.99996670e+04 1.23e+04 5.55e-16 1.08e+02 0s 2 2.16080046e+03 -1.98734977e+04 2.11e+03 1.11e-14 2.09e+01 0s 3 1.49838698e+03 -2.81697248e+03 7.64e+00 1.11e-14 2.43e+00 0s 4 1.37737824e+03 -1.38111138e+03 2.48e+00 6.66e-15 1.55e+00 0s 5 1.33623654e+03 -1.31366281e+03 2.30e+00 6.22e-15 1.49e+00 0s 6 1.10847352e+03 -4.14484476e+02 1.66e+00 3.11e-15 8.56e-01 0s 7 9.35657610e+02 -1.42300839e+02 1.22e+00 2.00e-15 6.05e-01 0s 8 6.26841507e+02 1.54868661e+02 3.67e-01 1.11e-15 2.65e-01 0s 9 5.04914218e+02 2.63525665e+02 1.58e-01 2.45e-16 1.35e-01 0s 10 4.53602827e+02 3.18567910e+02 7.40e-02 3.33e-16 7.58e-02 0s 11 4.37100761e+02 3.63652904e+02 4.90e-02 2.22e-16 4.12e-02 0s 12 4.27489789e+02 3.81546393e+02 2.83e-02 2.23e-16 2.58e-02 0s 13 4.30072498e+02 3.95349171e+02 1.37e-02 2.22e-16 1.95e-02 0s 14 4.26069067e+02 4.08281028e+02 9.49e-03 2.22e-16 9.98e-03 0s 15 4.19392876e+02 4.13012395e+02 2.43e-03 2.98e-16 3.58e-03 0s 16 4.18943601e+02 4.15619016e+02 1.87e-03 2.22e-16 1.86e-03 0s 17 4.18676840e+02 4.15952300e+02 1.57e-03 2.51e-16 1.53e-03 0s 18 4.17480095e+02 4.16624605e+02 3.57e-04 2.82e-16 4.80e-04 0s 19 4.17220058e+02 4.17078222e+02 7.37e-05 2.31e-16 7.96e-05 0s 20 4.17150137e+02 4.17149854e+02 6.30e-08 2.22e-16 1.59e-07 0s 21 4.17150000e+02 4.17150000e+02 2.42e-12 3.01e-16 1.59e-10 0s Barrier solved model in 21 iterations and 0.02 seconds Optimal objective 4.17150000e+02 Root relaxation: objective 4.171500e+02, 499 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 417.15000 0 28 1203.00000 417.15000 65.3% - 0s H 0 0 418.0000000 417.15000 0.20% - 0s Explored 0 nodes (972 simplex iterations) in 0.06 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.180000000000e+02, best bound 4.180000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.06 seconds Total run time: 0.09 seconds Objective: 418 Solution: 66 x [11, 12, 18] 22 x [5, 15, 16] 1 x [2, 14, 15, 19] 46 x [2, 3, 10, 14, 15] 3 x [2, 10, 10, 14, 15] 7 x [2, 2, 9, 10, 15, 20] 65 x [1, 8, 20] 34 x [1, 16, 16] 1 x [6, 6, 7, 18] 28 x [7, 7, 20] 13 x [6, 6, 7, 7, 18] 14 x [2, 8, 14, 18, 19] 5 x [4, 16, 17] 12 x [4, 10, 17, 19] 41 x [4, 4, 19] 1 x [16, 17] 21 x [6, 6, 13, 14, 17, 19] 6 x [6, 6, 13, 13, 14, 17] 29 x [5, 5, 13, 17] 3 x [6, 6, 13, 13, 14, 14, 18]