CoinOptServices.js Couenne Options through JuMP does not work.

[paulobuchsbaum]

I could not change Couenne's options in JuMP / CoinOptServices.js in a non linear model. All my sources are updated: (Julia 0.6.2, JumP 0.18.1, CoinOptServices 0.3, AmplNLWriter 0.4)

I've followed the instructons in AmplNLWriter.jl

m = Model(solver=AmplNLSolver(CoinOptServices.couenne,["couenne.allowable_gap=1"]))

The message is Unknown keyword "couenne.allowable_gap"

The options like allowable_gap are documented in couenne.opt

As the doc suggest, I've also tried to create a file (couenne.opt), that was placed tentatively in 2 differents folders: the same folder than source julia code with solver calls and the same folder than couenne.exe (bin) is, with no results.

File content: allowable_gap 1

For BonMin heuristics, the same syntax works and runs the model OK:

m = Model(solver=AmplNLSolver(CoinOptServices.bonmin,["bonmin.nlp_log_level=1"))

However, the file bonmin.optalso fails