diff options
Diffstat (limited to 'engine/uState.ml')
| -rw-r--r-- | engine/uState.ml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/engine/uState.ml b/engine/uState.ml index adea78d4c9..9b27ff7916 100644 --- a/engine/uState.ml +++ b/engine/uState.ml @@ -214,7 +214,8 @@ let process_universe_constraints ctx cstrs = | Inr l, Inl r | Inl r, Inr l -> let alg = LSet.mem l ctx.uctx_univ_algebraic in let inst = univ_level_rem l r r in - if alg then (instantiate_variable l inst vars; local) + if alg && not (LSet.mem l (Universe.levels inst)) then + (instantiate_variable l inst vars; local) else let lu = Universe.make l in if univ_level_mem l r then |