mirror of
https://github.com/Z3Prover/z3
synced 2025-04-15 21:38:44 +00:00
167 lines
6.4 KiB
C++
167 lines
6.4 KiB
C++
/*++
|
|
Copyright (c) 2012 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
fpa2bv_rewriter.h
|
|
|
|
Abstract:
|
|
|
|
Rewriter for converting FPA to BV
|
|
|
|
Author:
|
|
|
|
Christoph (cwinter) 2012-02-09
|
|
|
|
Notes:
|
|
|
|
--*/
|
|
|
|
#ifndef _FPA2BV_REWRITER_H_
|
|
#define _FPA2BV_REWRITER_H_
|
|
|
|
#include"cooperate.h"
|
|
#include"rewriter_def.h"
|
|
#include"bv_decl_plugin.h"
|
|
#include"fpa2bv_converter.h"
|
|
|
|
struct fpa2bv_rewriter_cfg : public default_rewriter_cfg {
|
|
ast_manager & m_manager;
|
|
expr_ref_vector m_out;
|
|
fpa2bv_converter & m_conv;
|
|
|
|
unsigned long long m_max_memory;
|
|
unsigned m_max_steps;
|
|
|
|
ast_manager & m() const { return m_manager; }
|
|
|
|
fpa2bv_rewriter_cfg(ast_manager & m, fpa2bv_converter & c, params_ref const & p):
|
|
m_manager(m),
|
|
m_out(m),
|
|
m_conv(c) {
|
|
updt_params(p);
|
|
// We need to make sure that the mananger has the BV plugin loaded.
|
|
symbol s_bv("bv");
|
|
if (!m_manager.has_plugin(s_bv))
|
|
m_manager.register_plugin(s_bv, alloc(bv_decl_plugin));
|
|
}
|
|
|
|
~fpa2bv_rewriter_cfg() {
|
|
}
|
|
|
|
void cleanup_buffers() {
|
|
m_out.finalize();
|
|
}
|
|
|
|
void updt_params(params_ref const & p) {
|
|
m_max_memory = megabytes_to_bytes(p.get_uint(":max-memory", UINT_MAX));
|
|
m_max_steps = p.get_uint(":max-steps", UINT_MAX);
|
|
}
|
|
|
|
bool max_steps_exceeded(unsigned num_steps) const {
|
|
cooperate("fpa2bv");
|
|
if (memory::get_allocation_size() > m_max_memory)
|
|
throw tactic_exception(TACTIC_MAX_MEMORY_MSG);
|
|
return num_steps > m_max_steps;
|
|
}
|
|
|
|
br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) {
|
|
TRACE("fpa2bv_rw", tout << "APP: " << f->get_name() << std::endl; );
|
|
|
|
if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_float(f->get_range())) {
|
|
m_conv.mk_const(f, result);
|
|
return BR_DONE;
|
|
}
|
|
|
|
if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_rm_sort(f->get_range())) {
|
|
m_conv.mk_rm_const(f, result);
|
|
return BR_DONE;
|
|
}
|
|
|
|
if (m().is_eq(f)) {
|
|
SASSERT(num == 2);
|
|
if (m_conv.is_float(args[0])) {
|
|
m_conv.mk_eq(args[0], args[1], result);
|
|
return BR_DONE;
|
|
}
|
|
return BR_FAILED;
|
|
}
|
|
|
|
if (m().is_ite(f)) {
|
|
SASSERT(num == 3);
|
|
if (m_conv.is_float(args[1])) {
|
|
m_conv.mk_ite(args[0], args[1], args[2], result);
|
|
return BR_DONE;
|
|
}
|
|
return BR_FAILED;
|
|
}
|
|
|
|
if (m_conv.is_float_family(f)) {
|
|
switch (f->get_decl_kind()) {
|
|
case OP_RM_NEAREST_TIES_TO_AWAY:
|
|
case OP_RM_NEAREST_TIES_TO_EVEN:
|
|
case OP_RM_TOWARD_NEGATIVE:
|
|
case OP_RM_TOWARD_POSITIVE:
|
|
case OP_RM_TOWARD_ZERO: m_conv.mk_rounding_mode(f, result); return BR_DONE;
|
|
case OP_FLOAT_VALUE: m_conv.mk_value(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_PLUS_INF: m_conv.mk_plus_inf(f, result); return BR_DONE;
|
|
case OP_FLOAT_MINUS_INF: m_conv.mk_minus_inf(f, result); return BR_DONE;
|
|
case OP_FLOAT_NAN: m_conv.mk_nan(f, result); return BR_DONE;
|
|
case OP_FLOAT_ADD: m_conv.mk_add(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_SUB: m_conv.mk_sub(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_UMINUS: m_conv.mk_uminus(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_MUL: m_conv.mk_mul(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_DIV: m_conv.mk_div(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_REM: m_conv.mk_remainder(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_ABS: m_conv.mk_abs(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_MIN: m_conv.mk_min(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_MAX: m_conv.mk_max(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_FUSED_MA: m_conv.mk_fusedma(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_SQRT: m_conv.mk_sqrt(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_ROUND_TO_INTEGRAL: m_conv.mk_round_to_integral(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_EQ: m_conv.mk_float_eq(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_LT: m_conv.mk_float_lt(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_GT: m_conv.mk_float_gt(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_LE: m_conv.mk_float_le(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_GE: m_conv.mk_float_ge(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_IS_ZERO: m_conv.mk_is_zero(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_IS_NZERO: m_conv.mk_is_nzero(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_IS_PZERO: m_conv.mk_is_pzero(f, num, args, result); return BR_DONE;
|
|
case OP_FLOAT_IS_SIGN_MINUS: m_conv.mk_is_sign_minus(f, num, args, result); return BR_DONE;
|
|
case OP_TO_FLOAT: m_conv.mk_to_float(f, num, args, result); return BR_DONE;
|
|
default:
|
|
TRACE("fpa2bv", tout << "unsupported operator: " << f->get_name() << "\n";
|
|
for (unsigned i = 0; i < num; i++) tout << mk_ismt2_pp(args[i], m()) << std::endl;);
|
|
throw tactic_exception("NYI");
|
|
}
|
|
}
|
|
|
|
return BR_FAILED;
|
|
}
|
|
|
|
bool reduce_quantifier(quantifier * old_q,
|
|
expr * new_body,
|
|
expr * const * new_patterns,
|
|
expr * const * new_no_patterns,
|
|
expr_ref & result,
|
|
proof_ref & result_pr) {
|
|
return false;
|
|
}
|
|
|
|
bool reduce_var(var * t, expr_ref & result, proof_ref & result_pr) {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
template class rewriter_tpl<fpa2bv_rewriter_cfg>;
|
|
|
|
struct fpa2bv_rewriter : public rewriter_tpl<fpa2bv_rewriter_cfg> {
|
|
fpa2bv_rewriter_cfg m_cfg;
|
|
fpa2bv_rewriter(ast_manager & m, fpa2bv_converter & c, params_ref const & p):
|
|
rewriter_tpl<fpa2bv_rewriter_cfg>(m, m.proofs_enabled(), m_cfg),
|
|
m_cfg(m, c, p) {
|
|
}
|
|
};
|
|
|
|
#endif
|