wip - dependent expr simpliifer

- simplify iterator over current indices
- add more simplifiers used by asserted_formulas
- improve diagnostics printing

src/ast/simplifiers/refine_inj_axiom.h

@@ -0,0 +1,44 @@
+/*++
+Copyright (c) 2022 Microsoft Corporation
+
+Module Name:
+
+    refine_inj_axiom.h
+
+Abstract:
+
+    refine injectivity axiom
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2022-11-24
+
+--*/
+
+#pragma once
+
+#include "ast/simplifiers/dependent_expr_state.h"
+#include "ast/rewriter/inj_axiom.h"
+
+
+
+class refine_inj_axiom_simplifier : public dependent_expr_simplifier {
+
+public:
+    refine_inj_axiom_simplifier(ast_manager& m, params_ref const& p, dependent_expr_state& fmls):
+        dependent_expr_simplifier(m, fmls) {
+    }
+
+    char const* name() const override { return "refine-injectivity"; }
+        
+    void reduce() override {
+        if (!m_fmls.has_quantifiers())
+            return;
+        expr_ref r(m);
+        for (unsigned idx : indices()) {
+            expr* f = m_fmls[idx].fml();
+            if (is_quantifier(f) && simplify_inj_axiom(m, to_quantifier(f), r)) 
+                m_fmls.update(idx, dependent_expr(m, r, m_fmls[idx].dep()));            
+        }
+    }
+};