Strange results with trivial linear optimization (coin-or-clp) -


i have extremely simple optimization problem:

minimize  obj:  + 400 selected_input_3 + 5000 selected_input_4 + 17592186044416 selected_input_5 + 100 selected_input_0 + 200 selected_input_1 + 300 selected_input_2 subject  c0: + 5000 selected_input_4 + 200 selected_input_1 + 100 selected_input_0 + 17592186044416 selected_input_5 + 300 selected_input_2 + 400 selected_input_3 >= 908 binary  selected_input_4 selected_input_1 selected_input_0 selected_input_5 selected_input_2 selected_input_3 end

and try solve clp running:

clp test.lp solve solu $

which prints out bizarre:

clp test.lp solve solu $ coin lp version 1.16, build aug 20 2017 command line - clp test.lp solve solu $  presolve 1 (0) rows, 6 (0) columns , 6 (0) elements optimal - objective value 0 optimal objective 0 - 0 iterations time 0.002  optimal objective value               0       0 selected_input_3               0                     400       1 selected_input_4               0                    5000       2 selected_input_5               0           1.7592186e+13       3 selected_input_0               0                     100       4 selected_input_1               0                     200       5 selected_input_2               0                     300

which if i'm interpreting correctly, telling me value variables 0, makes no sense (as violate constraint). i'm not sure last column trying either.


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