fix build compiler warnings on OSX

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/ast/rewriter/seq_rewriter.cpp

@@ -53,6 +53,7 @@ eautomaton* re2automaton::re2aut(expr* e) {
     SASSERT(u.is_re(e));
     expr* e1, *e2;
     scoped_ptr<eautomaton> a, b;
+    unsigned lo, hi;
     if (u.re.is_to_re(e, e1)) {
         return seq2aut(e1);
     }
@@ -77,10 +78,21 @@ eautomaton* re2automaton::re2aut(expr* e) {
         return a.detach();                    
     }
     else if (u.re.is_range(e)) {
-
+        // TBD
     }
-    else if (u.re.is_loop(e)) {
+    else if (u.re.is_loop(e, e1, lo, hi) && (a = re2aut(e1))) {
-
+        scoped_ptr<eautomaton> eps = eautomaton::mk_epsilon(m);
+        b = eautomaton::mk_epsilon(m);
+        while (hi > lo) {
+            scoped_ptr<eautomaton> c = eautomaton::mk_concat(*a, *b);
+            b = eautomaton::mk_union(*eps, *c);
+            --hi;
+        }
+        while (lo > 0) {
+            b = eautomaton::mk_concat(*a, *b);
+            --lo;
+        }
+        return b.detach();        
     }
 #if 0
     else if (u.re.is_intersect(e, e1, e2)) {
@@ -210,8 +222,6 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
     case OP_STRING_STOI: 
         SASSERT(num_args == 1);
         return mk_str_stoi(args[0], result);
-    case OP_REGEXP_LOOP: 
-        return BR_FAILED;
     case _OP_STRING_CONCAT:
     case _OP_STRING_PREFIX:
     case _OP_STRING_SUFFIX:
@@ -653,6 +663,31 @@ void seq_rewriter::add_next(u_map<expr*>& next, unsigned idx, expr* cond) {
     }
 }
 
+bool seq_rewriter::is_sequence(eautomaton& aut, expr_ref_vector& seq) {
+    unsigned state = aut.init();
+    uint_set visited;
+    eautomaton::moves mvs;
+    aut.get_moves_from(state, mvs, true);
+    while (!aut.is_final_state(state)) {
+        if (mvs.size() != 1) {
+            return false;
+        }
+        if (visited.contains(state)) {
+            return false;
+        }
+        visited.insert(state);
+        expr* t = mvs[0].t();
+        if (!t) {
+            return false;
+        }
+        seq.push_back(m_util.str.mk_unit(t));
+        state = mvs[0].dst();
+        mvs.reset();
+        aut.get_moves_from(state, mvs, true);
+    }
+    return mvs.empty();
+}
+
 bool seq_rewriter::is_sequence(expr* e, expr_ref_vector& seq) {
     zstring s;
     ptr_vector<expr> todo;
@@ -688,7 +723,24 @@ bool seq_rewriter::is_sequence(expr* e, expr_ref_vector& seq) {
 br_status seq_rewriter::mk_str_in_regexp(expr* a, expr* b, expr_ref& result) {
     scoped_ptr<eautomaton> aut;
     expr_ref_vector seq(m());
-    if (is_sequence(a, seq) && (aut = re2automaton(m())(b))) {
+    if (!(aut = re2automaton(m())(b))) {
+        return BR_FAILED;
+    }
+
+    if (is_sequence(*aut, seq)) {
+        if (seq.empty()) {
+            result = m().mk_eq(a, m_util.str.mk_empty(m().get_sort(a)));
+        }
+        else {
+            result = m().mk_eq(a, m_util.str.mk_concat(seq));
+        }
+        return BR_REWRITE_FULL;
+    }
+
+    if (!is_sequence(a, seq)) {
+        return BR_FAILED;
+    } 
+        
     expr_ref_vector trail(m());
     u_map<expr*> maps[2];
     bool select_map = false;
@@ -743,8 +795,6 @@ br_status seq_rewriter::mk_str_in_regexp(expr* a, expr* b, expr_ref& result) {
     }
     result = mk_or(ors);
     return BR_REWRITE_FULL;
-    }
-    return BR_FAILED;
 }
 br_status seq_rewriter::mk_str_to_regexp(expr* a, expr_ref& result) {
     return BR_FAILED;

src/ast/rewriter/seq_rewriter.h

@@ -75,6 +75,7 @@ class seq_rewriter {
 
     void add_next(u_map<expr*>& next, unsigned idx, expr* cond);
     bool is_sequence(expr* e, expr_ref_vector& seq);
+    bool is_sequence(eautomaton& aut, expr_ref_vector& seq);
     bool is_epsilon(expr* e) const;
 
 public:    

src/ast/seq_decl_plugin.cpp

@@ -250,7 +250,13 @@ void seq_decl_plugin::match_right_assoc(psig& sig, unsigned dsz, sort *const* do
     if (!is_match) {
         std::ostringstream strm;
         strm << "Sort of function '" << sig.m_name << "' ";
-        strm << "does not match the declared type";
+        strm << "does not match the declared type. Given domain: ";
+        for (unsigned i = 0; i < dsz; ++i) {
+            strm << mk_pp(dom[i], m) << " ";
+        }
+        if (range) {
+            strm << " and range: " << mk_pp(range, m);
+        }
         m.raise_exception(strm.str().c_str());
     }
     range_out = apply_binding(binding, sig.m_range);
@@ -277,7 +283,19 @@ void seq_decl_plugin::match(psig& sig, unsigned dsz, sort *const* dom, sort* ran
     if (!is_match) {
         std::ostringstream strm;
         strm << "Sort of polymorphic function '" << sig.m_name << "' ";
-        strm << "does not match the declared type";
+        strm << "does not match the declared type. ";
+        strm << "\nGiven domain: ";
+        for (unsigned i = 0; i < dsz; ++i) {
+            strm << mk_pp(dom[i], m) << " ";
+        }
+        if (range) {
+            strm << " and range: " << mk_pp(range, m);
+        }
+        strm << "\nExpected domain: ";
+        for (unsigned i = 0; i < dsz; ++i) {
+            strm << mk_pp(sig.m_dom[i].get(), m) << " ";
+        }
+        
         m.raise_exception(strm.str().c_str());
     }
     if (!range && dsz == 0) {
@@ -319,7 +337,8 @@ void seq_decl_plugin::init() {
     parameter paramA(A);
     parameter paramS(strT);
     sort* seqA = m.mk_sort(m_family_id, SEQ_SORT, 1, &paramA);
-    sort* reA  = m.mk_sort(m_family_id, RE_SORT, 1, &paramA);
+    parameter paramSA(seqA);
+    sort* reA  = m.mk_sort(m_family_id, RE_SORT, 1, &paramSA);
     sort* reT  = m.mk_sort(m_family_id, RE_SORT, 1, &paramS);
     sort* boolT = m.mk_bool_sort();
     sort* intT  = arith_util(m).mk_int();
@@ -356,7 +375,7 @@ void seq_decl_plugin::init() {
     m_sigs[OP_RE_CONCAT]     = alloc(psig, m, "re.++",        1, 2, reAreA, reA);
     m_sigs[OP_RE_UNION]      = alloc(psig, m, "re.union",     1, 2, reAreA, reA);
     m_sigs[OP_RE_INTERSECT]  = alloc(psig, m, "re.inter",     1, 2, reAreA, reA);
-    m_sigs[OP_RE_LOOP]           = alloc(psig, m, "re-loop",    1, 1, &reA, reA);
+    m_sigs[OP_RE_LOOP]           = alloc(psig, m, "re.loop",    1, 1, &reA, reA);
     m_sigs[OP_RE_EMPTY_SET]      = alloc(psig, m, "re-empty-set", 1, 0, 0, reA);
     m_sigs[OP_RE_FULL_SET]       = alloc(psig, m, "re-full-set", 1, 0, 0, reA);
     m_sigs[OP_RE_OF_PRED]        = alloc(psig, m, "re-of-pred", 1, 1, &predA, reA);
@@ -367,7 +386,6 @@ void seq_decl_plugin::init() {
     m_sigs[_OP_STRING_STRREPL]   = alloc(psig, m, "str.replace", 0, 3, str3T, strT);
     m_sigs[OP_STRING_ITOS]       = alloc(psig, m, "int.to.str", 0, 1, &intT, strT);
     m_sigs[OP_STRING_STOI]       = alloc(psig, m, "str.to.int", 0, 1, &strT, intT);
-    m_sigs[OP_REGEXP_LOOP]       = alloc(psig, m, "re.loop", 0, 2, strTint2T, reT); // maybe 3 arguments.
     m_sigs[_OP_STRING_CONCAT]    = alloc(psig, m, "str.++", 1, 2, str2T, strT);
     m_sigs[_OP_STRING_LENGTH]    = alloc(psig, m, "str.len", 0, 1, &strT, intT);
     m_sigs[_OP_STRING_STRCTN]    = alloc(psig, m, "str.contains", 0, 2, str2T, boolT);
@@ -472,7 +490,6 @@ func_decl * seq_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters,
     case OP_RE_OF_PRED:
     case OP_STRING_ITOS:
     case OP_STRING_STOI:
-    case OP_REGEXP_LOOP:
         match(*m_sigs[k], arity, domain, range, rng);
         return m.mk_func_decl(m_sigs[k]->m_name, arity, domain, rng, func_decl_info(m_family_id, k));
 
@@ -670,3 +687,18 @@ void seq_util::str::get_concat(expr* e, expr_ref_vector& es) const {
         es.push_back(e);
     }
 }
+
+bool seq_util::re::is_loop(expr const* n, expr*& body, unsigned& lo, unsigned& hi)  {
+    if (is_loop(n)) {
+        app const* a = to_app(n);
+        SASSERT(a->get_num_args() == 1);
+        SASSERT(a->get_decl()->get_num_parameters() == 2);
+        body = a->get_arg(0);
+        lo = a->get_decl()->get_parameter(0).get_int();
+        hi = a->get_decl()->get_parameter(1).get_int();
+        return true;
+    }
+    else {
+        return false;
+    }
+}

src/ast/seq_decl_plugin.h

@@ -63,7 +63,6 @@ enum seq_op_kind {
     OP_STRING_CONST,
     OP_STRING_ITOS, 
     OP_STRING_STOI, 
-    OP_REGEXP_LOOP,    // TBD re-loop: integers as parameters or arguments?
     // internal only operators. Converted to SEQ variants.
     _OP_STRING_STRREPL, 
     _OP_STRING_CONCAT, 
@@ -304,7 +303,7 @@ public:
         bool is_plus(expr const* n)    const { return is_app_of(n, m_fid, OP_RE_PLUS); }
         bool is_opt(expr const* n)    const { return is_app_of(n, m_fid, OP_RE_OPTION); }
         bool is_range(expr const* n)    const { return is_app_of(n, m_fid, OP_RE_RANGE); }
-        bool is_loop(expr const* n)    const { return is_app_of(n, m_fid, OP_REGEXP_LOOP); }
+        bool is_loop(expr const* n)    const { return is_app_of(n, m_fid, OP_RE_LOOP); }
        
         MATCH_UNARY(is_to_re);
         MATCH_BINARY(is_concat);
@@ -313,6 +312,7 @@ public:
         MATCH_UNARY(is_star);
         MATCH_UNARY(is_plus);
         MATCH_UNARY(is_opt);
+        bool is_loop(expr const* n, expr*& body, unsigned& lo, unsigned& hi);
         
     };
     str str;

src/smt/theory_seq.cpp

@@ -165,9 +165,9 @@ theory_seq::theory_seq(ast_manager& m):
     m_util(m),
     m_autil(m),
     m_trail_stack(*this),
-    m_atoms_qhead(0),
     m_ls(m), m_rs(m),
     m_lhs(m), m_rhs(m),
+    m_atoms_qhead(0),
     m_new_solution(false),
     m_new_propagation(false) {    
     m_prefix = "seq.prefix.suffix";
@@ -194,7 +194,6 @@ theory_seq::~theory_seq() {
 
 
 final_check_status theory_seq::final_check_eh() { 
-    context & ctx   = get_context();
     TRACE("seq", display(tout););
     if (simplify_and_solve_eqs()) {
         ++m_stats.m_solve_eqs;
@@ -760,7 +759,6 @@ bool theory_seq::add_solution(expr* l, expr* r, dependency* deps)  {
     if (l == r) {
         return false;
     }
-    context& ctx = get_context();
     TRACE("seq", tout << mk_pp(l, m) << " ==> " << mk_pp(r, m) << "\n";);
     m_new_solution = true;
     m_rep.update(l, r, deps);
@@ -933,7 +931,6 @@ bool theory_seq::solve_binary_eq(expr_ref_vector const& ls, expr_ref_vector cons
 }
 
 bool theory_seq::solve_nqs(unsigned i) {
-    bool change = false;
     context & ctx = get_context();
     for (; !ctx.inconsistent() && i < m_nqs.size(); ++i) {
         if (solve_ne(i)) {
@@ -1262,7 +1259,7 @@ void theory_seq::init_model(expr_ref_vector const& es) {
 }
 
 void theory_seq::init_model(model_generator & mg) {
-    m_factory = alloc(seq_factory, get_manager(), get_family_id(), mg.get_model());
+    m_factory = alloc(seq_factory, get_manager(), get_family_id());
     mg.register_factory(m_factory);
     for (unsigned j = 0; j < m_nqs.size(); ++j) {
         ne const& n = m_nqs[j];
@@ -1288,7 +1285,6 @@ public:
     }
     virtual app * mk_value(model_generator & mg, ptr_vector<expr> & values) {
         SASSERT(values.size() == m_dependencies.size());
-        ast_manager& m = mg.get_manager();
         if (values.empty()) {
             return th.mk_value(n);
         }
@@ -1362,7 +1358,7 @@ app* theory_seq::mk_value(app* e) {
         unsigned sz;
         if (bv.is_numeral(result, val, sz) && sz == zstring().num_bits()) {
             unsigned v = val.get_unsigned();
-            if ((0 <= v && v < 7) || (14 <= v && v < 32) || v == 127) {
+            if ((v < 7) || (14 <= v && v < 32) || v == 127) {
                 result = m_util.str.mk_unit(result);                
             }
             else {
@@ -1817,7 +1813,6 @@ enode* theory_seq::ensure_enode(expr* e) {
 }
 
 static theory_mi_arith* get_th_arith(context& ctx, theory_id afid, expr* e) {
-    ast_manager& m = ctx.get_manager();
     theory* th = ctx.get_theory(afid);
     if (th && ctx.e_internalized(e)) {
         return dynamic_cast<theory_mi_arith*>(th);

src/smt/theory_seq_empty.h

@@ -26,23 +26,19 @@ namespace smt {
     class seq_factory : public value_factory {
         typedef hashtable<symbol, symbol_hash_proc, symbol_eq_proc> symbol_set;
         ast_manager& m;
-        proto_model& m_model;
         seq_util     u;
         symbol_set   m_strings;
         unsigned     m_next;
-        char         m_char;
         std::string  m_unique_delim;
         obj_map<sort, expr*> m_unique_sequences;
         expr_ref_vector m_trail;
     public:
 
-        seq_factory(ast_manager & m, family_id fid, proto_model & md):
+        seq_factory(ast_manager & m, family_id fid):
             value_factory(m, fid),
             m(m),
-            m_model(md),
             u(m),
             m_next(0),
-            m_char(0),
             m_unique_delim("!"),
             m_trail(m)
         {
@@ -129,7 +125,7 @@ namespace smt {
     public:
         theory_seq_empty(ast_manager& m):theory(m.mk_family_id("seq")), m_used(false) {}
         virtual void init_model(model_generator & mg) {
-            mg.register_factory(alloc(seq_factory, get_manager(), get_family_id(), mg.get_model()));
+            mg.register_factory(alloc(seq_factory, get_manager(), get_family_id()));
         }
 
     };