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Making ast_smt2_pp the default pretty printer. Now, mk_pp is just an alias for mk_ismt2_pp

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-11-17 10:20:08 -08:00
parent 1645f61d85
commit 93bfcaa404
6 changed files with 27 additions and 575 deletions

View file

@ -1,516 +0,0 @@
/*++
Copyright (c) 2006 Microsoft Corporation
Module Name:
ast_pp.cpp
Abstract:
Expression DAG pretty printer
Author:
Leonardo de Moura 2008-01-20.
Revision History:
--*/
#include"ast_pp.h"
#include"pp.h"
#include"obj_pair_hashtable.h"
#include"ast_ll_pp.h"
#include"arith_decl_plugin.h"
#include"bv_decl_plugin.h"
#include"datatype_decl_plugin.h"
#include"dl_decl_plugin.h"
#include"ast_list.h"
#include<sstream>
using namespace format_ns;
mk_pp::mk_pp(ast * a, ast_manager & m, pp_params const & p, unsigned indent, unsigned num_var_names, char const * const * var_names):
m_ast(a),
m_manager(m),
m_params(p),
m_indent(indent),
m_num_var_names(num_var_names),
m_var_names(var_names) {
}
mk_pp::mk_pp(ast * a, ast_manager & m, unsigned indent, unsigned num_var_names, char const * const * var_names):
m_ast(a),
m_manager(m),
m_params(get_pp_default_params()),
m_indent(indent),
m_num_var_names(num_var_names),
m_var_names(var_names) {
}
std::ostream & ast_pp(std::ostream & strm, ast * n, ast_manager & m) {
return ast_pp(strm, n, m, get_pp_default_params());
}
struct pp_cache {
typedef obj_pair_map<ast, quantifier_list, format *> cache;
ast_manager & m_manager;
cache m_cache;
pp_cache(ast_manager & m):
m_manager(m) {
}
~pp_cache() {
reset();
}
bool contains(ast * k1, quantifier_list * k2) const { return m_cache.contains(k1, k2); }
void get(ast * k1, quantifier_list * k2, format * & r) const { m_cache.find(k1, k2, r); }
void insert(ast * k1, quantifier_list * k2, format * f) {
SASSERT(!m_cache.contains(k1, k2));
fm(m_manager).inc_ref(f);
m_cache.insert(k1, k2, f);
}
void reset() {
cache::iterator it = m_cache.begin();
cache::iterator end = m_cache.end();
for (; it != end; ++it) {
format * f = (*it).get_value();
fm(m_manager).dec_ref(f);
}
m_cache.reset();
}
};
class formatter {
typedef quantifier_list_manager qlist_manager;
typedef quantifier_list_ref qlist_ref;
typedef quantifier_list_ref_vector qlist_ref_vector;
pp_params const & m_params;
ast_manager & m_manager;
qlist_manager m_qlist_manager;
pp_cache m_cache;
typedef std::pair<ast*, quantifier_list*> pp_entry;
svector<pp_entry> m_todo;
qlist_ref_vector m_qlists;
app_ref m_nil;
arith_util m_autil;
bv_util m_bvutil;
datatype_util m_datatype_util;
datalog::dl_decl_util m_dl_util;
ptr_vector<sort> m_datatypes;
app_ref_vector m_format_trail;
ast_mark m_visited_datatypes;
unsigned m_num_var_names;
char const * const * m_var_names;
struct symbol2format {
ast_manager & m_manager;
symbol2format(ast_manager & m):m_manager(m) {}
format * operator()(symbol const & s) {
std::string str = s.str();
return mk_string(m_manager, str.c_str());
}
};
format * get_cached(ast * n, quantifier_list * qlist) {
format * f = 0;
if (is_sort(n)) {
qlist = m_qlist_manager.mk_nil();
}
m_cache.get(n, qlist, f);
SASSERT(f);
return f;
}
void visit(ast * n, quantifier_list * qlist, bool & visited) {
if (is_sort(n)) {
qlist = m_qlist_manager.mk_nil();
}
if (!m_cache.contains(n, qlist)) {
m_todo.push_back(pp_entry(n, qlist));
visited = false;
}
}
bool visit_children(ast * n, quantifier_list * qlist) {
unsigned j;
bool visited = true;
switch (n->get_kind()) {
case AST_FUNC_DECL: {
func_decl* f = to_func_decl(n);
j = f->get_arity();
while (j > 0) {
--j;
visit(f->get_domain(j), qlist, visited);
}
visit(f->get_range(), qlist, visited);
j = f->get_num_parameters();
while (j > 0) {
--j;
parameter p(f->get_parameter(j));
if (p.is_ast()) {
visit(p.get_ast(), qlist, visited);
}
}
break;
}
case AST_SORT: {
sort* s = to_sort(n);
j = s->get_num_parameters();
while (j > 0) {
--j;
parameter p(s->get_parameter(j));
if (p.is_ast()) {
visit(p.get_ast(), qlist, visited);
}
}
break;
}
case AST_APP: {
app* a = to_app(n);
j = a->get_num_args();
while (j > 0) {
--j;
visit(a->get_arg(j), qlist, visited);
}
visit(a->get_decl(), qlist, visited);
break;
}
case AST_QUANTIFIER:
j = to_quantifier(n)->get_num_patterns();
qlist = m_qlist_manager.mk_cons(to_quantifier(n), qlist);
m_qlists.push_back(qlist);
while (j > 0) {
--j;
visit(to_quantifier(n)->get_pattern(j), qlist, visited);
}
j = to_quantifier(n)->get_num_no_patterns();
while (j > 0) {
--j;
visit(to_quantifier(n)->get_no_pattern(j), qlist, visited);
}
j = to_quantifier(n)->get_num_decls();
while (j > 0) {
--j;
visit(to_quantifier(n)->get_decl_sort(j), qlist, visited);
visit_sort(to_quantifier(n)->get_decl_sort(j));
}
visit(to_quantifier(n)->get_expr(), qlist, visited);
break;
default:
break;
}
return visited;
}
void reduce1(ast * n, quantifier_list * qlist) {
format * r;
switch(n->get_kind()) {
case AST_APP:
r = reduce1_app(to_app(n), qlist);
break;
case AST_VAR:
r = reduce1_var(to_var(n), qlist);
break;
case AST_QUANTIFIER:
r = reduce1_quantifier(to_quantifier(n), qlist);
break;
case AST_SORT:
r = reduce1_sort(to_sort(n), qlist);
break;
case AST_FUNC_DECL:
r = reduce1_func_decl(to_func_decl(n), qlist);
break;
}
m_cache.insert(n, qlist, r);
}
format * mk_parameter(parameter const & p, quantifier_list * qlist) {
if (p.is_int()) {
return mk_int(m_manager, p.get_int());
}
else if (p.is_symbol()) {
return mk_string(m_manager, p.get_symbol().str().c_str());
}
else if (p.is_ast()) {
ast * n = p.get_ast();
if (is_func_decl(n)) {
return mk_string(m_manager, to_func_decl(n)->get_name().str().c_str());
}
else {
return get_cached(p.get_ast(), qlist);
}
}
else if (p.is_rational()) {
return mk_string(m_manager, p.get_rational().to_string().c_str());
}
else {
return 0;
}
}
void mk_parameters(unsigned num_params, parameter const * p, quantifier_list * qlist, ptr_buffer<format> & result, bool add_separator) {
bool first = true;
for (unsigned i = 0; i < num_params; i++) {
if (!first && add_separator) {
result.push_back(mk_string(m_manager, ":"));
}
format * pp = mk_parameter(p[i], qlist);
if (pp) {
result.push_back(pp);
first = false;
}
}
}
format * mk_parameters(unsigned num_params, parameter const * p, quantifier_list * qlist) {
if (num_params == 0)
return m_nil;
ptr_buffer<format> buffer;
buffer.push_back(mk_string(m_manager, "["));
mk_parameters(num_params, p, qlist, buffer, true);
buffer.push_back(mk_string(m_manager, "]"));
return mk_compose(m_manager, buffer.size(), buffer.c_ptr());
}
void visit_sort(sort* s) {
if (m_datatype_util.is_datatype(s) &&
!m_visited_datatypes.is_marked(s)) {
m_datatypes.push_back(s);
m_visited_datatypes.mark(s, true);
}
}
format * reduce1_sort(sort * s, quantifier_list * qlist) {
if (m_datatype_util.is_datatype(s)) {
return mk_string(m_manager, s->get_name().str().c_str());
}
ptr_buffer<format> pps;
mk_parameters(s->get_num_parameters(), s->get_parameters(), qlist, pps, false);
std::string name = s->get_name().str();
if (pps.empty())
return mk_string(m_manager, name.c_str());
return mk_seq1(m_manager, pps.c_ptr(), pps.c_ptr() + pps.size(),
f2f(), name.c_str());
}
format * reduce1_func_decl(func_decl * f, quantifier_list * qlist) {
ptr_buffer<format> children;
children.push_back(mk_compose(m_manager,
mk_string(m_manager, f->get_name().str().c_str()),
mk_parameters(f->get_num_parameters(), f->get_parameters(), qlist)));
for (unsigned i = 0; i < f->get_arity(); i++)
children.push_back(get_cached(f->get_domain(i), qlist));
children.push_back(get_cached(f->get_range(), qlist));
return mk_seq1(m_manager, children.begin(), children.end(), f2f(), "define");
}
void get_children(app * n, quantifier_list * qlist, ptr_buffer<format> & result) {
for (unsigned i = 0; i < n->get_num_args(); i++)
result.push_back(get_cached(n->get_arg(i), qlist));
}
format * reduce1_app(app * n, quantifier_list * qlist) {
rational val;
bool is_int;
bool pos;
unsigned bv_size;
uint64 uval;
buffer<symbol> names;
ptr_buffer<format> children;
if (m_autil.is_numeral(n, val, is_int)) {
std::string str;
if (val.is_neg()) {
str = "(- " + (-val).to_string() + ")";
}
else {
str = val.to_string();
}
return mk_string(m_manager, str.c_str());
}
else if (m_bvutil.is_numeral(n, val, bv_size)) {
std::string str = val.to_string();
return mk_compose(m_manager,
mk_string(m_manager, "bv"),
mk_string(m_manager, str.c_str()),
mk_compose(m_manager, mk_string(m_manager, "["), mk_unsigned(m_manager, bv_size), mk_string(m_manager, "]")));
}
else if (m_dl_util.is_finite_sort(n) &&
m_dl_util.is_numeral_ext(n, uval)) {
return mk_string(m_manager, rational(uval,rational::ui64()).to_string().c_str());
}
else if (m_manager.is_label(n, pos, names)) {
get_children(n, qlist, children);
symbol2format f(m_manager);
format * lbl = names.size() > 1 ? mk_seq5(m_manager, names.begin(), names.end(), f) : f(names[0]);
format * args[2] = { lbl, children[0] };
format ** begin = args;
return mk_seq1(m_manager, begin, begin+2, f2f(), pos ? "lblpos" : "lblneg");
}
else if (m_manager.is_pattern(n)) {
get_children(n, qlist, children);
return mk_seq5(m_manager, children.begin(), children.end(), f2f(), "{", "}");
}
else if (m_manager.is_proof(n)) {
get_children(n, qlist, children);
return mk_seq2(m_manager, children.begin(), children.end(), f2f(), n->get_decl()->get_name().str().c_str(),
FORMAT_DEFAULT_INDENT, "[", "]");
}
else if (m_params.m_pp_fixed_indent || (n->get_decl()->get_num_parameters() > 0 && !n->get_decl()->private_parameters())) {
format * head = mk_compose(m_manager,
mk_string(m_manager, n->get_decl()->get_name().str().c_str()),
mk_parameters(n->get_decl()->get_num_parameters(), n->get_decl()->get_parameters(), qlist));
if (n->get_num_args() == 0)
return head;
children.push_back(head);
get_children(n, qlist, children);
return mk_seq4(m_manager, children.begin(), children.end(), f2f());
}
else if (n->get_num_args() == 0)
return mk_string(m_manager, n->get_decl()->get_name().str().c_str());
else {
get_children(n, qlist, children);
return mk_seq1(m_manager, children.begin(), children.end(), f2f(), n->get_decl()->get_name().str().c_str());
}
}
format * reduce1_var(var * v, quantifier_list * qlist) {
unsigned idx = v->get_idx();
unsigned i = idx;
while (!is_nil(qlist)) {
quantifier * q = head(qlist);
if (i < q->get_num_decls())
return mk_string(m_manager, q->get_decl_name(q->get_num_decls() - i - 1).str().c_str());
i -= q->get_num_decls();
qlist = tail(qlist);
}
if (i < m_num_var_names) {
return mk_string(m_manager, m_var_names[m_num_var_names - i - 1]);
}
else {
return mk_compose(m_manager, mk_string(m_manager, "#"), mk_unsigned(m_manager, idx));
}
}
format * reduce1_quantifier(quantifier * q, quantifier_list * qlist) {
qlist = m_qlist_manager.mk_cons(q, qlist);
ptr_buffer<format> buffer;
unsigned num = q->get_num_decls();
for (unsigned j = 0; j < num; j++) {
format * d[2];
d[0] = mk_string(m_manager, q->get_decl_name(j).str().c_str());
d[1] = get_cached(q->get_decl_sort(j), qlist);
format ** it = d;
buffer.push_back(mk_seq5(m_manager, it, it+2, f2f()));
}
buffer.push_back(get_cached(q->get_expr(), qlist));
num = q->get_num_patterns();
char const * pat = ":pat ";
unsigned pat_indent = static_cast<unsigned>(strlen(pat));
for (unsigned i = 0; i < num; i++)
buffer.push_back(mk_compose(m_manager, mk_string(m_manager, pat), mk_indent(m_manager, pat_indent, get_cached(q->get_pattern(i), qlist))));
num = q->get_num_no_patterns();
for (unsigned i = 0; i < num; i++)
buffer.push_back(mk_compose(m_manager, mk_string(m_manager, ":nopat {"), get_cached(q->get_no_pattern(i), qlist), mk_string(m_manager, "}")));
if (q->get_qid() != symbol::null)
buffer.push_back(mk_compose(m_manager, mk_string(m_manager, ":qid {"), mk_string(m_manager, q->get_qid().str().c_str()), mk_string(m_manager, "}")));
return mk_seq3(m_manager, buffer.begin(), buffer.end(), f2f(), q->is_forall() ? "forall" : "exists",
q->get_num_decls());
}
public:
formatter(ast_manager & m, pp_params const & p, unsigned num_var_names, char const * const * var_names):
m_params(p),
m_manager(m),
m_qlist_manager(m),
m_cache(m),
m_qlists(m_qlist_manager),
m_nil(mk_nil(m), fm(m)),
m_autil(m),
m_bvutil(m),
m_datatype_util(m),
m_dl_util(m),
m_format_trail(fm(m)),
m_num_var_names(num_var_names),
m_var_names(var_names) {
}
~formatter() {
}
format * operator()(ast * n) {
m_todo.push_back(pp_entry(n, m_qlist_manager.mk_nil()));
while (!m_todo.empty()) {
pp_entry k = m_todo.back();
if (m_cache.contains(k.first, k.second))
m_todo.pop_back();
else if (visit_children(k.first, k.second)) {
m_todo.pop_back();
reduce1(k.first, k.second);
}
}
format* f1 = get_cached(n, m_qlist_manager.mk_nil());
if (m_datatypes.empty()) {
return f1;
}
ptr_buffer<format> formats;
formats.push_back(f1);
for (unsigned i = 0; i < m_datatypes.size(); ++i) {
sort* s = m_datatypes[i];
std::ostringstream buffer;
m_datatype_util.display_datatype(s, buffer);
format* f2 = mk_string(m_manager, buffer.str().c_str());
formats.push_back(mk_line_break(m_manager));
formats.push_back(f2);
}
f1 = mk_compose(m_manager, formats.size(), formats.c_ptr());
//
// Ensure that reference count is live.
//
m_format_trail.push_back(f1);
return f1;
}
};
std::ostream & ast_pp(std::ostream & out, ast * n, ast_manager & m, pp_params const & p, unsigned indent,
unsigned num_vars, char const * const * names) {
formatter f(m, p, num_vars, names);
app_ref fmt(fm(m));
fmt = f(n);
if (indent > 0)
fmt = format_ns::mk_indent(m, indent, fmt);
pp(out, fmt, m, p);
return out;
}
std::string & ast_pp(std::string & out, ast * n, ast_manager & m, pp_params const & p, unsigned indent) {
std::ostringstream buffer;
buffer << mk_pp(n, m, p, indent);
out += buffer.str();
return out;
}
std::string ast_pp(ast * n, ast_manager & m, pp_params const & p, unsigned indent) {
std::string out;
return ast_pp(out, n, m, p, indent);
}
std::string & ast_pp(std::string & out, ast * n, ast_manager & m) {
return ast_pp(out, n, m, get_pp_default_params());
}
std::string ast_pp(ast * n, ast_manager & m) {
return ast_pp(n, m, get_pp_default_params());
}

View file

@ -15,39 +15,22 @@ Author:
Revision History:
2012-11-17 - ast_smt2_pp is the official pretty printer in Z3
--*/
#ifndef _AST_PP_H_
#define _AST_PP_H_
#include"ast.h"
#include"pp_params.h"
#include"ast_smt2_pp.h"
std::ostream & ast_pp(std::ostream & strm, ast * n, ast_manager & m, pp_params const & p, unsigned indent = 0,
unsigned num_vars = 0, char const * const * names = 0);
std::ostream & ast_pp(std::ostream & strm, ast * n, ast_manager & m);
std::string & ast_pp(std::string & s, ast * n, ast_manager & m, pp_params const & p, unsigned indent = 0);
std::string ast_pp(ast * n, ast_manager & m, pp_params const & p, unsigned indent = 0);
std::string & ast_pp(std::string & s, ast * n, ast_manager & m);
std::string ast_pp(ast * n, ast_manager & m);
struct mk_pp {
ast * m_ast;
ast_manager & m_manager;
pp_params const & m_params;
unsigned m_indent;
unsigned m_num_var_names;
char const * const * m_var_names;
mk_pp(ast * a, ast_manager & m, pp_params const & p, unsigned indent = 0, unsigned num_var_names = 0, char const * const * var_names = 0);
mk_pp(ast * a, ast_manager & m, unsigned indent = 0, unsigned num_var_names = 0, char const * const * var_names = 0);
struct mk_pp : public mk_ismt2_pp {
mk_pp(ast * t, ast_manager & m, pp_params const & p, unsigned indent = 0, unsigned num_vars = 0, char const * var_prefix = 0):
mk_ismt2_pp(t, m, p, indent, num_vars, var_prefix) {
}
mk_pp(ast * t, ast_manager & m, unsigned indent = 0, unsigned num_vars = 0, char const * var_prefix = 0):
mk_ismt2_pp(t, m, indent, num_vars, var_prefix) {
}
};
inline std::ostream& operator<<(std::ostream& out, const mk_pp & p) {
return ast_pp(out, p.m_ast, p.m_manager, p.m_params, p.m_indent, p.m_num_var_names, p.m_var_names);
}
inline std::string& operator+=(std::string& out, const mk_pp & p) {
return ast_pp(out, p.m_ast, p.m_manager, p.m_params, p.m_indent);
}
#endif

View file

@ -205,14 +205,10 @@ expr_pattern_match::match(expr* a, unsigned init, subst& s)
// substitution s contains registers with matching declarations.
return true;
case CHECK_TERM:
TRACE("expr_pattern_match", display(tout, pc);
ast_pp(tout, m_regs[pc.m_reg], m_manager) << "\n";);
ok = (pc.m_pat == m_regs[pc.m_reg]);
break;
case SET_VAR:
case CHECK_VAR: {
TRACE("expr_pattern_match", display(tout, pc);
ast_pp(tout, m_regs[pc.m_reg], m_manager) << "\n";);
app* app1 = to_app(pc.m_pat);
a = m_regs[pc.m_reg];
if (a->get_kind() != AST_APP) {
@ -237,8 +233,6 @@ expr_pattern_match::match(expr* a, unsigned init, subst& s)
break;
}
case SET_BOUND: {
TRACE("expr_pattern_match", display(tout, pc);
ast_pp(tout, m_regs[pc.m_reg], m_manager) << "\n";);
a = m_regs[pc.m_reg];
if (a->get_kind() != AST_VAR) {
break;
@ -329,15 +323,6 @@ expr_pattern_match::match(expr* a, unsigned init, subst& s)
if (k < fac*num_args) {
bstack.push_back(instr(CHOOSE_AC, pc.m_offset, pc.m_next, app2, k+1));
}
TRACE("expr_pattern_match",
{
tout << "fac: " << fac << " num_args:" << num_args << " k:" << k << "\n";
for (unsigned i = 0; i < num_args; ++i) {
ast_pp(tout, m_regs[pc.m_offset + i], m_manager);
tout << " ";
}
tout << "\n";
});
break;
}
case BACKTRACK:
@ -430,24 +415,24 @@ expr_pattern_match::display(std::ostream& out, instr const& pc) const {
break;
case BIND:
out << "bind ";
ast_pp(out, to_app(pc.m_pat)->get_decl(), m_manager) << " ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << mk_pp(to_app(pc.m_pat)->get_decl(), m_manager) << " ";
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "offset: " << pc.m_offset << "\n";
out << "reg: " << pc.m_reg << "\n";
break;
case BIND_AC:
out << "bind_ac ";
ast_pp(out, to_app(pc.m_pat)->get_decl(), m_manager) << " ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << mk_pp(to_app(pc.m_pat)->get_decl(), m_manager) << " ";
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "offset: " << pc.m_offset << "\n";
out << "reg: " << pc.m_reg << "\n";
break;
case BIND_C:
out << "bind_c ";
ast_pp(out, to_app(pc.m_pat)->get_decl(), m_manager) << " ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << mk_pp(to_app(pc.m_pat)->get_decl(), m_manager) << " ";
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "offset: " << pc.m_offset << "\n";
out << "reg: " << pc.m_reg << "\n";
@ -464,23 +449,23 @@ expr_pattern_match::display(std::ostream& out, instr const& pc) const {
break;
case CHECK_VAR:
out << "check_var ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "reg: " << pc.m_reg << "\n";
out << "other_reg: " << pc.m_other_reg << "\n";
break;
case CHECK_TERM:
out << "check ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "reg: " << pc.m_reg << "\n";
break;
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
out << "reg: " << pc.m_reg << "\n";
break;
case YIELD:
out << "yield\n";
break;
case SET_VAR:
out << "set_var ";
ast_pp(out, pc.m_pat, m_manager) << "\n";
out << mk_pp(pc.m_pat, m_manager) << "\n";
out << "next: " << pc.m_next << "\n";
break;
default:

View file

@ -610,7 +610,7 @@ void substitution_tree::display(std::ostream & out, node * n, unsigned delta) co
pp_params p;
p.m_pp_single_line = true;
out << " ==> ";
ast_pp(out, n->m_expr, m_manager, p);
out << mk_pp(n->m_expr, m_manager, p);
out << "\n";
}
else {

View file

@ -47,7 +47,7 @@ namespace datalog {
out<<"(";
for(unsigned i=0; i<sz; i++) {
if(i) { out<<","; }
out<<ast_pp((*this)[i], m);
out << mk_pp((*this)[i], m);
}
out<<")";
}

View file

@ -42,11 +42,11 @@ static void test_qe(ast_manager& m, lbool expected_outcome, expr* fml, char cons
qe(m.mk_true(), fml, result);
std::cout << " -> " << mk_pp(result, m) << " " << expected_outcome << "\n";
if (expected_outcome == l_true && !m.is_true(result)) {
std::cout << "ERROR: expected true, instead got " << ast_pp(result, m).c_str() << "\n";
std::cout << "ERROR: expected true, instead got " << mk_pp(result, m) << "\n";
//exit(-1);
}
if (expected_outcome == l_false && !m.is_false(result)) {
std::cout << "ERROR: expected false, instead got " << ast_pp(result, m).c_str() << "\n";
std::cout << "ERROR: expected false, instead got " << mk_pp(result, m) << "\n";
//exit(-1);
}
}