Build (method = -2) #dp: 4673 Step-3' Graph: 438 vertices and 2159 arcs (0.03s) Step-4' Graph: 407 vertices and 2097 arcs (0.03s) #V4/#V3 = 0.93 #A4/#A3 = 0.97 Ready! (0.03s) Optimize a model with 427 rows, 2098 columns and 5528 nonzeros Presolve removed 68 rows and 121 columns Presolve time: 0.04s Presolved: 359 rows, 1977 columns, 5387 nonzeros Variable types: 0 continuous, 1977 integer (0 binary) Found heuristic solution: objective 1768.0000000 Optimize a model with 359 rows, 1977 columns and 5387 nonzeros Presolved: 359 rows, 1977 columns, 5387 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.237e+03 Factor NZ : 1.729e+04 (roughly 1 MByte of memory) Factor Ops : 1.361e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.31814517e+04 -3.33830836e+05 2.92e+05 2.22e-16 7.64e+02 0s 1 4.63636350e+03 -2.18167993e+05 5.14e+04 6.66e-16 1.66e+02 0s 2 2.58802720e+03 -7.37049241e+04 1.05e+04 1.57e-14 3.72e+01 0s 3 2.06750019e+03 -1.99883583e+04 1.33e+03 2.53e-14 7.27e+00 0s 4 1.97556022e+03 -3.47425856e+03 5.33e+01 8.49e-15 1.41e+00 0s 5 1.87431159e+03 -1.68055631e+03 8.52e-02 9.42e-15 8.96e-01 0s 6 1.72992848e+03 -1.41293813e+03 6.40e-02 1.27e-14 7.92e-01 0s 7 1.66569365e+03 -9.66431937e+02 5.14e-02 1.46e-14 6.63e-01 0s 8 1.39072383e+03 -7.80735744e+01 3.16e-02 1.04e-14 3.70e-01 0s 9 1.09897755e+03 3.03083543e+02 1.57e-02 1.07e-14 2.01e-01 0s 10 9.60854936e+02 5.21834881e+02 8.08e-03 1.14e-14 1.11e-01 0s 11 8.39996217e+02 7.03702652e+02 1.93e-03 9.53e-15 3.43e-02 0s 12 8.27829402e+02 7.85859401e+02 1.34e-03 7.02e-15 1.06e-02 0s 13 8.00098395e+02 7.97715514e+02 1.43e-05 7.02e-15 6.01e-04 0s 14 7.99500627e+02 7.99498182e+02 6.37e-11 9.66e-15 6.16e-07 0s 15 7.99500001e+02 7.99499998e+02 3.58e-11 6.87e-15 6.16e-10 0s 16 7.99500000e+02 7.99500000e+02 4.49e-12 7.11e-15 6.47e-16 0s Barrier solved model in 16 iterations and 0.05 seconds Optimal objective 7.99500000e+02 Root relaxation: objective 7.995000e+02, 633 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 799.50000 0 3 1768.00000 799.50000 54.8% - 0s H 0 0 800.0000000 799.50000 0.06% - 0s Explored 0 nodes (1100 simplex iterations) in 0.14 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 8.000000000000e+02, best bound 8.000000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.14 seconds Total run time: 0.19 seconds Objective: 800 Solution: 151 x [9, 14] 20 x [12, 14] 4 x [4, 7, 10] 67 x [3, 11] 7 x [4, 7, 11] 20 x [4, 11] 29 x [4, 5] 1 x [15] 47 x [4, 7, 15] 3 x [4, 7, 15, 18] 20 x [4, 15] 1 x [17] 11 x [17, 19] 3 x [13, 17] 77 x [13, 16, 16, 17] 30 x [1, 3, 17] 1 x [8, 17] 30 x [8, 8, 17] 39 x [4, 17] 67 x [2, 2] 1 x [6] 86 x [6, 18, 20] 46 x [6, 6] 39 x [9, 20, 20]