wip - updates to proof logging and self-checking

move self-checking functionality to inside sat/smt so it can be used on-line and not just off-line.

when self-validation fails, use vs, not clause, to check. It allows self-validation without checking and maintaining RUP validation.

new options sat.smt.proof.check_rup, sat.smt.proof.check for online validation.

z3 sat.smt.proof.check=true sat.euf=true /v:1 sat.smt.proof.check_rup=true /st file.smt2 sat.smt.proof=p.smt2

src/sat/smt/q_theory_checker.h

@@ -0,0 +1,58 @@
+/*++
+Copyright (c) 2022 Microsoft Corporation
+
+Module Name:
+
+    q_theory_checker.h
+
+Abstract:
+
+    Plugin for checking quantifier instantiations
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2022-10-07
+
+
+--*/
+#pragma once
+
+#include "util/obj_pair_set.h"
+#include "ast/ast_trail.h"
+#include "ast/ast_util.h"
+#include "sat/smt/euf_proof_checker.h"
+#include <iostream>
+
+namespace q {
+
+    class theory_checker : public euf::theory_checker_plugin {
+        ast_manager& m;
+        symbol       m_inst;
+        symbol       m_bind;
+
+        expr_ref_vector binding(app* jst);
+
+        bool is_inst(expr* jst);
+
+        bool is_bind(expr* e);
+        
+    public:
+        theory_checker(ast_manager& m): 
+            m(m),
+            m_inst("inst"),
+            m_bind("bind") {
+            }
+        
+        expr_ref_vector clause(app* jst) override;
+
+        bool check(app* jst) override { return false; }
+
+        void register_plugins(euf::theory_checker& pc) override {
+            pc.register_plugin(symbol("inst"), this);
+        }
+
+        bool vc(app* jst, expr_ref_vector const& clause, expr_ref_vector& v) override;
+        
+    };
+
+}