lean4-htt/tests/lean/run/grind_9427.lean
Leonardo de Moura 1b5fb2fa50
fix: check exponent in grind lia and grind ring (#11135)
This PR ensures that `checkExp` is used in `grind lia` (formerly known
as `grind cutsat`) and `grind ring` to prevent stack overflows.

closes #11130
2025-11-11 02:28:55 +00:00

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Text

module
example {n} (x y : BitVec n) : x * y = y * x := by
grind
example {n} (x y z w : BitVec n) : w = z → x * y - z*w = 0 → z*z = y * x := by
grind
example (x y : BitVec 64) : x * y = y * x := by
grind
example (x y : BitVec 128) : x * y = y * x := by
grind
example (x y : BitVec 128) : x * y = y * x + 2^64 * 2^64 * x := by
grind
example (x y : BitVec 256) : x * y = y * x := by
grind
example (x y : BitVec 1024) : x * y = y * x := by
grind
example (x y : BitVec 1024) : x * y = y * x := by
grind -lia
example (x y : BitVec 100000) : x * y = y * x := by
grind -lia
example (x y z : BitVec 100000) : x * y - z*z = 0 → z*z = y * x := by
grind -lia
/--
trace: [grind.issues] exponent 1024 exceeds threshold for exponentiation `(exp := 16)`
[grind.issues] exponent 1024 exceeds threshold for exponentiation `(exp := 16)`
[grind.issues] exponent 1024 exceeds threshold for exponentiation `(exp := 16)`
-/
#guard_msgs in
set_option trace.grind.issues true in
example (x y : BitVec 1024) : x * y = y * x := by
grind (exp := 16)