Add error in slack model for nonsensical constraints (#125)

* Add error in slack model for nonsensical constraints
JuliaSmoothOptimizers · Sep 5, 2024 · 201fa59 · 201fa59
1 parent 722d517
commit 201fa59
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/slack-model.jl b/src/slack-model.jl
@@ -131,6 +131,11 @@ function slack_meta(meta::AbstractNLPModelMeta{T, S}; name = meta.name * "-slack
   x0 = similar(meta.x0, meta.nvar + ns)
   x0[1:(meta.nvar)] .= meta.x0
   x0[(meta.nvar + 1):end] .= zero(T)
+
+  if (length(x0) != length(lvar)) && any((meta.lcon .== -Inf) .& (meta.ucon .== Inf))
+    throw(error("NLPModels with constraints of the form -∞ ≤ cᵢ(x) ≤ ∞ are not supported by slack models."))
+  end
+
   return NLPModelMeta{T, S}(
     meta.nvar + ns,
     x0 = x0,