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#5778 - ensure arrays used inside of extensionality function are treated as shared

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-04-25 17:17:59 +01:00
parent 0a665b0fa0
commit 8e2f09b517
2 changed files with 9 additions and 33 deletions
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6
src/sat/smt/array_axioms.cpp
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@ -629,12 +629,14 @@ namespace array {
euf::enode * n = var2enode(i);
if (!is_array(n))
continue;
CTRACE("array", !ctx.is_relevant(n), tout << "not relevant: " << ctx.bpp(n) << "\n");
if (!ctx.is_relevant(n))
continue;
euf::enode * r = n->get_root();
if (r->is_marked1())
continue;
// arrays used as indices in other arrays have to be treated as shared issue #3532, #3529
// arrays used as indices in other arrays have to be treated as shared issue #3532, #3529
CTRACE("array", !ctx.is_shared(r) && !is_shared_arg(r), tout << "not shared: " << ctx.bpp(r) << "\n");
if (ctx.is_shared(r) || is_shared_arg(r))
roots.push_back(r->get_th_var(get_id()));
r->mark1();
@ -655,6 +657,8 @@ namespace array {
return true;
if (a.is_const(e))
return true;
if (a.is_ext(e))
return true;
}
return false;