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bv_bounds: ensure (bvule x maxuint) is simplified to true

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This commit is contained in:
Nuno Lopes 2016-02-28 10:56:48 +00:00
parent 4cf72e23e6
commit 51687b2be7
1 changed files with 4 additions and 4 deletions
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8
src/tactic/bv/bv_bounds_tactic.cpp
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@ -324,7 +324,9 @@ public:
interval ctx, intr; interval ctx, intr;
result = 0; result = 0;
if (m_bound->find(t1, ctx)) { if (b.is_full() && b.tight) {
result = m.mk_true();
} else if (m_bound->find(t1, ctx)) {
if (ctx.implies(b)) { if (ctx.implies(b)) {
result = m.mk_true(); result = m.mk_true();
} else if (!b.intersect(ctx, intr)) { } else if (!b.intersect(ctx, intr)) {
@ -332,8 +334,6 @@ public:
} else if (m_propagate_eq && intr.is_singleton()) { } else if (m_propagate_eq && intr.is_singleton()) {
result = m.mk_eq(t1, m_bv.mk_numeral(intr.l, m.get_sort(t1))); result = m.mk_eq(t1, m_bv.mk_numeral(intr.l, m.get_sort(t1)));
} }
} else if (b.is_full() && b.tight) {
result = m.mk_true();
} }
CTRACE("bv", result != 0, tout << mk_pp(t, m) << " " << b << " (ctx: " << ctx << ") (intr: " << intr << "): " << result << "\n";); CTRACE("bv", result != 0, tout << mk_pp(t, m) << " " << b << " (ctx: " << ctx << ") (intr: " << intr << "): " << result << "\n";);
@ -358,7 +358,7 @@ public:
interval b; interval b;
// skip common case: single bound constraint without any context for simplification // skip common case: single bound constraint without any context for simplification
if (is_bound(t, t1, b)) { if (is_bound(t, t1, b)) {
return m_bound->contains(t1); return b.is_full() || m_bound->contains(t1);
} }
return expr_has_bounds(t); return expr_has_bounds(t);
} }