(proof-new) Update Theory interface for proof-new (#4648)

This includes 4 changes:

Theory constructor takes a ProofNodeManager,
Theory::explain returns a TrustNode (of kind PROP_EXP),
Theory::expandDefinitions returns a TrustNode (of kind REWRITE),
Theory::ppRewrite returns a TrustNode (of kind REWRITE).
These are all currently planned updates to the interface of Theory.
This PR also connects some of the existing proof rule checkers into the proof checker, if one is provided to the constructor. It updates TheoryEngine and other places to process TrustNode in trivial ways (converting them into Node). These calls will later be updated as needed for proof support.

This PR is also contingent on the performance tests for proof-new on SMT-LIB.

1 files changed, 9 insertions, 5 deletions

diff --git a/src/theory/fp/theory_fp.h b/src/theory/fp/theory_fp.h
index 52cd39863..a3e0dd94a 100644
--- a/src/theory/fp/theory_fp.h
+++ b/src/theory/fp/theory_fp.h
@@ -36,17 +36,21 @@ namespace fp {
 class TheoryFp : public Theory {
  public:
   /** Constructs a new instance of TheoryFp w.r.t. the provided contexts. */
-  TheoryFp(context::Context* c, context::UserContext* u, OutputChannel& out,
-           Valuation valuation, const LogicInfo& logicInfo);
+  TheoryFp(context::Context* c,
+           context::UserContext* u,
+           OutputChannel& out,
+           Valuation valuation,
+           const LogicInfo& logicInfo,
+           ProofNodeManager* pnm = nullptr);
 
   TheoryRewriter* getTheoryRewriter() override { return &d_rewriter; }
 
-  Node expandDefinition(Node node) override;
+  TrustNode expandDefinition(Node node) override;
 
   void preRegisterTerm(TNode node) override;
   void addSharedTerm(TNode node) override;
 
-  Node ppRewrite(TNode node) override;
+  TrustNode ppRewrite(TNode node) override;
 
   void check(Effort) override;
 
@@ -58,7 +62,7 @@ class TheoryFp : public Theory {
 
   void setMasterEqualityEngine(eq::EqualityEngine* eq) override;
 
-  Node explain(TNode n) override;
+  TrustNode explain(TNode n) override;
 
  protected:
   /** Equality engine */