Use `sat -tempinduct` and comments for why equiv_opt not sufficient

diff --git a/tests/various/peepopt.ys b/tests/various/peepopt.ys
index 4b130578b68cbdc67c56a66d3f4ad22f5e70f763..ee5ad8a1a6c094f1e563a952b698b6f7028e3905 100644 (file)
--- a/tests/various/peepopt.ys
+++ b/tests/various/peepopt.ys
@@ -188,6 +188,13 @@ endmodule
 EOT
 
 proc
+# NB: equiv_opt uses equiv_induct which covers
+#     only the induction half of temporal induction
+#     --- missing the base-case half
+#     This makes it akin to `sat -tempinduct-inductonly`
+#     instead of `sat -tempinduct-baseonly` or
+#     `sat -tempinduct` which is necessary for this
+#     testcase
 #equiv_opt -assert peepopt
 
 design -save gold
@@ -197,7 +204,7 @@ design -stash gate
 design -import gold -as gold
 design -import gate -as gate
 miter -equiv -flatten -make_assert -make_outputs gold gate miter
-sat -seq 1 -verify -prove-asserts -show-ports miter
+sat -tempinduct -verify -prove-asserts -show-ports miter
 
 design -load gate
 select -assert-count 1 t:$dff r:WIDTH=4 %i