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add sls-sms solver

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This commit is contained in:
Nikolaj Bjorner 2024-07-14 16:51:06 -07:00
parent 586343ce64
commit 1cd95e9db4
3 changed files with 212 additions and 19 deletions
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39
src/ast/sls/sls_basic_plugin.cpp
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@ -28,7 +28,8 @@ namespace sls {
auto a = ctx.atom(lit.var());
if (!a || !is_app(a))
return;
SASSERT(to_app(a)->get_family_id() != basic_family_id);
if (to_app(a)->get_family_id() != basic_family_id)
return;
if (bval1(to_app(a)) != bval0(to_app(a)))
ctx.new_value_eh(a);
}
@ -62,10 +63,7 @@ namespace sls {
void basic_plugin::set_value(expr* e, expr* v) {
if (!m.is_bool(e))
return;
SASSERT(m.is_bool(v));
SASSERT(m.is_true(v) || m.is_false(v));
if (bval0(e) != m.is_true(v))
return;
set_value(e, m.is_true(v));
}
@ -198,16 +196,21 @@ namespace sls {
}
bool basic_plugin::try_repair_ite(app* e, unsigned i) {
auto child = e->get_arg(i);
bool c = bval0(e->get_arg(0));
if (i == 0)
return set_value(child, !c);
if (c != (i == 1))
if (!m.is_bool(e))
return false;
if (m.is_bool(e))
return set_value(child, bval0(e));
return false;
auto child = e->get_arg(i);
auto cond = e->get_arg(0);
bool c = bval0(cond);
if (i == 0) {
if (ctx.rand(2) == 0)
return set_value(cond, true) && set_value(e->get_arg(1), bval0(e));
else
return set_value(cond, false) && set_value(e->get_arg(2), bval0(e));
}
if (!set_value(child, bval0(e)))
return false;
return (c == (i == 1)) || set_value(cond, !c);
}
bool basic_plugin::try_repair_implies(app* e, unsigned i) {
@ -234,12 +237,10 @@ namespace sls {
return true;
if (i == 1 && bv && !av)
return true;
if (i == 0) {
return set_value(child, true) && set_value(sibling, false);
}
if (i == 1) {
return set_value(child, false) && set_value(sibling, true);
}
if (i == 0)
return set_value(child, true) && set_value(sibling, false);
if (i == 1)
return set_value(child, false) && set_value(sibling, true);
return false;
}