\forall H3:\forall X:Univ.\forall Y:Univ.\forall Z:Univ.eq Univ (multiply (multiply X Y) Z) (multiply X (multiply Y Z)).eq Univ (multiply b a) c
.
intros.
-autobatch paramodulation timeout=100.
+autobatch paramodulation timeout=100;
try assumption.
print proofterm.
qed.