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Add EUF (congruence closure) proof hints and checker to the new core

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EUF proofs are checked modulo union-find.
Equalities are added to to union-find if they are assumptions or if they can be derived using congruence closure. The congruence closure assumptions are added as proof-hints.
Note that this proof format does not track equality inferences, symmetry and transitivity. Instead they are handled by assuming a union-find based checker.
This commit is contained in:
Nikolaj Bjorner 2022-09-25 14:26:20 -07:00
parent 6f2fde87d1
commit 9be8fc7857
11 changed files with 315 additions and 57 deletions
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2
src/sat/smt/user_solver.cpp
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@ -207,7 +207,7 @@ namespace user_solver {
for (unsigned id : prop.m_ids)
r.append(m_id2justification[id]);
for (auto const& p : prop.m_eqs)
ctx.add_antecedent(expr2enode(p.first), expr2enode(p.second));
ctx.add_antecedent(probing, expr2enode(p.first), expr2enode(p.second));
}
/*