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authorSon Ho2022-02-12 20:26:37 +0100
committerSon Ho2022-02-12 20:26:37 +0100
commit10069dcae02e54403a6737214c317da90701e1ba (patch)
treed84bfc707db3981c6a08745bcd3d73e90fefd621 /tests
parent7fa5813d7c286a8b069bc65a632ccf003c5f3480 (diff)
Make more progress
Diffstat (limited to 'tests')
-rw-r--r--tests/hashmap/Hashmap.Properties.fst14
1 files changed, 12 insertions, 2 deletions
diff --git a/tests/hashmap/Hashmap.Properties.fst b/tests/hashmap/Hashmap.Properties.fst
index 509d3614..ca3a911f 100644
--- a/tests/hashmap/Hashmap.Properties.fst
+++ b/tests/hashmap/Hashmap.Properties.fst
@@ -1953,7 +1953,8 @@ val hash_map_move_elements_s_flat_lem
// The invariant is preserved
hash_map_slots_s_inv hm' /\
// The new hash map is the union of the two maps
- (forall (k:key). hash_map_slots_s_find hm' k == find_in_union_hm_al hm al k)))
+ (forall (k:key). hash_map_slots_s_find hm' k == find_in_union_hm_al hm al k) /\
+ hash_map_slots_s_len hm' = hash_map_slots_s_len hm + length al))
(decreases al)
#restart-solver
@@ -2109,6 +2110,8 @@ val hash_map_move_elements_fwd_back_lem
| _ -> False // We can only succeed
))
+#restart-solver
+#push-options "--z3rlimit 200"
let hash_map_move_elements_fwd_back_lem t ntable slots =
let ntable_v = hash_map_t_slots_v ntable in
let slots_v = slots_t_v slots in
@@ -2122,7 +2125,14 @@ let hash_map_move_elements_fwd_back_lem t ntable slots =
| Return (ntable', _), Return ntable'_v ->
assert(hash_map_t_inv ntable');
assume(length ntable'.hash_map_slots = length ntable.hash_map_slots); // TODO
- assume(hash_map_t_len_s ntable' = length al); // TODO
+ // Adding the following let binding makes the proof fails even with a huge
+ // rlitmit. Really having fun here...
+ // let ntable'_v = hash_map_t_slots_v ntable' in
+// assume(hash_map_slots_s_len ntable'_v == hash_map_t_len_s ntable'); // TODO
+ assert(hash_map_slots_s_len (hash_map_t_slots_v ntable') == hash_map_t_len_s ntable');
+ assume(hash_map_slots_s_len (hash_map_t_slots_v ntable') == length al); // TODO
+ assert(hash_map_t_len_s ntable' = length al);
assume(hash_map_t_slots_v ntable' == ntable'_v); // TODO
assert(hash_map_is_assoc_list ntable' al)
| _ -> assume(False)
+#pop-options