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https://github.com/Z3Prover/z3
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make proto-model evaluation use model_evaluator instead of legacy evaluator
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner
parent
6fef24edb4
commit
70f13ced33
22 changed files with 528 additions and 297 deletions
270
src/ast/fpa/fpa2bv_rewriter.cpp
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270
src/ast/fpa/fpa2bv_rewriter.cpp
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@ -0,0 +1,270 @@
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/*++
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Copyright (c) 2012 Microsoft Corporation
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Module Name:
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fpa2bv_rewriter.cpp
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Abstract:
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Rewriter for converting FPA to BV
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Author:
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Christoph (cwinter) 2012-02-09
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Notes:
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--*/
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#include"rewriter_def.h"
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#include"fpa2bv_rewriter.h"
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#include"cooperate.h"
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#include"fpa2bv_rewriter_params.hpp"
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fpa2bv_rewriter_cfg::fpa2bv_rewriter_cfg(ast_manager & m, fpa2bv_converter & c, params_ref const & p) :
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m_manager(m),
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m_out(m),
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m_conv(c),
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m_bindings(m)
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{
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updt_params(p);
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// We need to make sure that the mananger has the BV plugin loaded.
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symbol s_bv("bv");
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if (!m_manager.has_plugin(s_bv))
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m_manager.register_plugin(s_bv, alloc(bv_decl_plugin));
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}
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void fpa2bv_rewriter_cfg::updt_local_params(params_ref const & _p) {
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fpa2bv_rewriter_params p(_p);
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bool v = p.hi_fp_unspecified();
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m_conv.set_unspecified_fp_hi(v);
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}
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void fpa2bv_rewriter_cfg::updt_params(params_ref const & p) {
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m_max_memory = megabytes_to_bytes(p.get_uint("max_memory", UINT_MAX));
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m_max_steps = p.get_uint("max_steps", UINT_MAX);
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updt_local_params(p);
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}
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bool fpa2bv_rewriter_cfg::max_steps_exceeded(unsigned num_steps) const {
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cooperate("fpa2bv");
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return num_steps > m_max_steps;
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}
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br_status fpa2bv_rewriter_cfg::reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) {
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TRACE("fpa2bv_rw", tout << "APP: " << f->get_name() << std::endl; );
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if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_float(f->get_range())) {
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m_conv.mk_const(f, result);
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return BR_DONE;
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}
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if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_rm(f->get_range())) {
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m_conv.mk_rm_const(f, result);
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return BR_DONE;
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}
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if (m().is_eq(f)) {
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SASSERT(num == 2);
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TRACE("fpa2bv_rw", tout << "(= " << mk_ismt2_pp(args[0], m()) << " " <<
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mk_ismt2_pp(args[1], m()) << ")" << std::endl;);
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SASSERT(m().get_sort(args[0]) == m().get_sort(args[1]));
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sort * ds = f->get_domain()[0];
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if (m_conv.is_float(ds)) {
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m_conv.mk_eq(args[0], args[1], result);
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return BR_DONE;
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}
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else if (m_conv.is_rm(ds)) {
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result = m().mk_eq(args[0], args[1]);
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return BR_DONE;
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}
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return BR_FAILED;
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}
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else if (m().is_ite(f)) {
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SASSERT(num == 3);
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if (m_conv.is_float(args[1])) {
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m_conv.mk_ite(args[0], args[1], args[2], result);
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return BR_DONE;
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}
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return BR_FAILED;
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}
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else if (m().is_distinct(f)) {
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sort * ds = f->get_domain()[0];
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if (m_conv.is_float(ds) || m_conv.is_rm(ds)) {
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m_conv.mk_distinct(f, num, args, result);
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return BR_DONE;
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}
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return BR_FAILED;
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}
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if (m_conv.is_float_family(f)) {
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switch (f->get_decl_kind()) {
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case OP_FPA_RM_NEAREST_TIES_TO_AWAY:
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case OP_FPA_RM_NEAREST_TIES_TO_EVEN:
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case OP_FPA_RM_TOWARD_NEGATIVE:
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case OP_FPA_RM_TOWARD_POSITIVE:
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case OP_FPA_RM_TOWARD_ZERO: m_conv.mk_rounding_mode(f, result); return BR_DONE;
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case OP_FPA_NUM: m_conv.mk_numeral(f, num, args, result); return BR_DONE;
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case OP_FPA_PLUS_INF: m_conv.mk_pinf(f, result); return BR_DONE;
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case OP_FPA_MINUS_INF: m_conv.mk_ninf(f, result); return BR_DONE;
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case OP_FPA_PLUS_ZERO: m_conv.mk_pzero(f, result); return BR_DONE;
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case OP_FPA_MINUS_ZERO: m_conv.mk_nzero(f, result); return BR_DONE;
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case OP_FPA_NAN: m_conv.mk_nan(f, result); return BR_DONE;
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case OP_FPA_ADD: m_conv.mk_add(f, num, args, result); return BR_DONE;
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case OP_FPA_SUB: m_conv.mk_sub(f, num, args, result); return BR_DONE;
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case OP_FPA_NEG: m_conv.mk_neg(f, num, args, result); return BR_DONE;
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case OP_FPA_MUL: m_conv.mk_mul(f, num, args, result); return BR_DONE;
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case OP_FPA_DIV: m_conv.mk_div(f, num, args, result); return BR_DONE;
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case OP_FPA_REM: m_conv.mk_rem(f, num, args, result); return BR_DONE;
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case OP_FPA_ABS: m_conv.mk_abs(f, num, args, result); return BR_DONE;
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case OP_FPA_FMA: m_conv.mk_fma(f, num, args, result); return BR_DONE;
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case OP_FPA_SQRT: m_conv.mk_sqrt(f, num, args, result); return BR_DONE;
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case OP_FPA_ROUND_TO_INTEGRAL: m_conv.mk_round_to_integral(f, num, args, result); return BR_DONE;
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case OP_FPA_EQ: m_conv.mk_float_eq(f, num, args, result); return BR_DONE;
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case OP_FPA_LT: m_conv.mk_float_lt(f, num, args, result); return BR_DONE;
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case OP_FPA_GT: m_conv.mk_float_gt(f, num, args, result); return BR_DONE;
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case OP_FPA_LE: m_conv.mk_float_le(f, num, args, result); return BR_DONE;
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case OP_FPA_GE: m_conv.mk_float_ge(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_ZERO: m_conv.mk_is_zero(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_NAN: m_conv.mk_is_nan(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_INF: m_conv.mk_is_inf(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_NORMAL: m_conv.mk_is_normal(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_SUBNORMAL: m_conv.mk_is_subnormal(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_POSITIVE: m_conv.mk_is_positive(f, num, args, result); return BR_DONE;
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case OP_FPA_IS_NEGATIVE: m_conv.mk_is_negative(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_FP: m_conv.mk_to_fp(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_FP_UNSIGNED: m_conv.mk_to_fp_unsigned(f, num, args, result); return BR_DONE;
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case OP_FPA_FP: m_conv.mk_fp(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_UBV: m_conv.mk_to_ubv(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_SBV: m_conv.mk_to_sbv(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_REAL: m_conv.mk_to_real(f, num, args, result); return BR_DONE;
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case OP_FPA_TO_IEEE_BV: m_conv.mk_to_ieee_bv(f, num, args, result); return BR_DONE;
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case OP_FPA_MIN: m_conv.mk_min(f, num, args, result); return BR_REWRITE_FULL;
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case OP_FPA_MAX: m_conv.mk_max(f, num, args, result); return BR_REWRITE_FULL;
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case OP_FPA_INTERNAL_MIN_UNSPECIFIED: result = m_conv.mk_min_unspecified(f, args[0], args[1]); return BR_DONE;
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case OP_FPA_INTERNAL_MAX_UNSPECIFIED: result = m_conv.mk_max_unspecified(f, args[0], args[1]); return BR_DONE;
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case OP_FPA_INTERNAL_MIN_I: m_conv.mk_min_i(f, num, args, result); return BR_DONE;
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case OP_FPA_INTERNAL_MAX_I: m_conv.mk_max_i(f, num, args, result); return BR_DONE;
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case OP_FPA_INTERNAL_RM:
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case OP_FPA_INTERNAL_BVWRAP:
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case OP_FPA_INTERNAL_BVUNWRAP:
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case OP_FPA_INTERNAL_TO_REAL_UNSPECIFIED:
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case OP_FPA_INTERNAL_TO_UBV_UNSPECIFIED:
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case OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED: return BR_FAILED;
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default:
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TRACE("fpa2bv", tout << "unsupported operator: " << f->get_name() << "\n";
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for (unsigned i = 0; i < num; i++) tout << mk_ismt2_pp(args[i], m()) << std::endl;);
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NOT_IMPLEMENTED_YET();
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}
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}
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else {
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SASSERT(!m_conv.is_float_family(f));
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bool is_float_uf = m_conv.is_float(f->get_range()) || m_conv.is_rm(f->get_range());
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for (unsigned i = 0; i < f->get_arity(); i++) {
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sort * di = f->get_domain()[i];
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is_float_uf |= m_conv.is_float(di) || m_conv.is_rm(di);
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}
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if (is_float_uf) {
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m_conv.mk_uninterpreted_function(f, num, args, result);
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return BR_DONE;
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}
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}
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return BR_FAILED;
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}
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bool fpa2bv_rewriter_cfg::pre_visit(expr * t)
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{
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TRACE("fpa2bv", tout << "pre_visit: " << mk_ismt2_pp(t, m()) << std::endl;);
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if (is_quantifier(t)) {
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quantifier * q = to_quantifier(t);
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TRACE("fpa2bv", tout << "pre_visit quantifier [" << q->get_id() << "]: " << mk_ismt2_pp(q->get_expr(), m()) << std::endl;);
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sort_ref_vector new_bindings(m_manager);
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for (unsigned i = 0 ; i < q->get_num_decls(); i++)
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new_bindings.push_back(q->get_decl_sort(i));
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SASSERT(new_bindings.size() == q->get_num_decls());
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m_bindings.append(new_bindings);
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}
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return true;
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}
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bool fpa2bv_rewriter_cfg::reduce_quantifier(quantifier * old_q,
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expr * new_body,
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expr * const * new_patterns,
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expr * const * new_no_patterns,
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expr_ref & result,
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proof_ref & result_pr) {
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unsigned curr_sz = m_bindings.size();
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SASSERT(old_q->get_num_decls() <= curr_sz);
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unsigned num_decls = old_q->get_num_decls();
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unsigned old_sz = curr_sz - num_decls;
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string_buffer<> name_buffer;
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ptr_buffer<sort> new_decl_sorts;
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sbuffer<symbol> new_decl_names;
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for (unsigned i = 0; i < num_decls; i++) {
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symbol const & n = old_q->get_decl_name(i);
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sort * s = old_q->get_decl_sort(i);
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if (m_conv.is_float(s)) {
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unsigned ebits = m_conv.fu().get_ebits(s);
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unsigned sbits = m_conv.fu().get_sbits(s);
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name_buffer.reset();
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name_buffer << n << ".bv";
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new_decl_names.push_back(symbol(name_buffer.c_str()));
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new_decl_sorts.push_back(m_conv.bu().mk_sort(sbits+ebits));
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}
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else {
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new_decl_sorts.push_back(s);
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new_decl_names.push_back(n);
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}
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}
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result = m().mk_quantifier(old_q->is_forall(), new_decl_sorts.size(), new_decl_sorts.c_ptr(), new_decl_names.c_ptr(),
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new_body, old_q->get_weight(), old_q->get_qid(), old_q->get_skid(),
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old_q->get_num_patterns(), new_patterns, old_q->get_num_no_patterns(), new_no_patterns);
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result_pr = 0;
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m_bindings.shrink(old_sz);
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TRACE("fpa2bv", tout << "reduce_quantifier[" << old_q->get_depth() << "]: " <<
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mk_ismt2_pp(old_q->get_expr(), m()) << std::endl <<
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" new body: " << mk_ismt2_pp(new_body, m()) << std::endl;
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tout << "result = " << mk_ismt2_pp(result, m()) << std::endl;);
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return true;
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}
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bool fpa2bv_rewriter_cfg::reduce_var(var * t, expr_ref & result, proof_ref & result_pr) {
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if (t->get_idx() >= m_bindings.size())
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return false;
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// unsigned inx = m_bindings.size() - t->get_idx() - 1;
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expr_ref new_exp(m());
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sort * s = t->get_sort();
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if (m_conv.is_float(s))
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{
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expr_ref new_var(m());
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unsigned ebits = m_conv.fu().get_ebits(s);
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unsigned sbits = m_conv.fu().get_sbits(s);
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new_var = m().mk_var(t->get_idx(), m_conv.bu().mk_sort(sbits+ebits));
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m_conv.mk_fp(m_conv.bu().mk_extract(sbits+ebits-1, sbits+ebits-1, new_var),
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m_conv.bu().mk_extract(ebits - 1, 0, new_var),
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m_conv.bu().mk_extract(sbits+ebits-2, ebits, new_var),
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new_exp);
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}
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else
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new_exp = m().mk_var(t->get_idx(), s);
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result = new_exp;
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result_pr = 0;
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TRACE("fpa2bv", tout << "reduce_var: " << mk_ismt2_pp(t, m()) << " -> " << mk_ismt2_pp(result, m()) << std::endl;);
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return true;
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}
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template class rewriter_tpl<fpa2bv_rewriter_cfg>;
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@ -20,11 +20,9 @@ Notes:
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#ifndef FPA2BV_REWRITER_H_
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#define FPA2BV_REWRITER_H_
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#include"cooperate.h"
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#include"rewriter_def.h"
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#include"rewriter.h"
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#include"bv_decl_plugin.h"
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#include"fpa2bv_converter.h"
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#include"fpa2bv_rewriter_params.hpp"
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struct fpa2bv_rewriter_cfg : public default_rewriter_cfg {
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ast_manager & m_manager;
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@ -37,17 +35,7 @@ struct fpa2bv_rewriter_cfg : public default_rewriter_cfg {
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ast_manager & m() const { return m_manager; }
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fpa2bv_rewriter_cfg(ast_manager & m, fpa2bv_converter & c, params_ref const & p) :
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m_manager(m),
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m_out(m),
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m_conv(c),
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m_bindings(m) {
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updt_params(p);
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// We need to make sure that the mananger has the BV plugin loaded.
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symbol s_bv("bv");
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if (!m_manager.has_plugin(s_bv))
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m_manager.register_plugin(s_bv, alloc(bv_decl_plugin));
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}
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fpa2bv_rewriter_cfg(ast_manager & m, fpa2bv_converter & c, params_ref const & p);
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~fpa2bv_rewriter_cfg() {
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}
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@ -59,236 +47,28 @@ struct fpa2bv_rewriter_cfg : public default_rewriter_cfg {
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void reset() {
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}
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void updt_local_params(params_ref const & _p) {
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fpa2bv_rewriter_params p(_p);
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bool v = p.hi_fp_unspecified();
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m_conv.set_unspecified_fp_hi(v);
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}
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void updt_local_params(params_ref const & _p);
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void updt_params(params_ref const & p) {
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m_max_memory = megabytes_to_bytes(p.get_uint("max_memory", UINT_MAX));
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m_max_steps = p.get_uint("max_steps", UINT_MAX);
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updt_local_params(p);
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}
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void updt_params(params_ref const & p);
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bool max_steps_exceeded(unsigned num_steps) const {
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cooperate("fpa2bv");
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return num_steps > m_max_steps;
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}
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bool max_steps_exceeded(unsigned num_steps) const;
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br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr) {
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TRACE("fpa2bv_rw", tout << "APP: " << f->get_name() << std::endl; );
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br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result, proof_ref & result_pr);
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if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_float(f->get_range())) {
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m_conv.mk_const(f, result);
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return BR_DONE;
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}
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if (num == 0 && f->get_family_id() == null_family_id && m_conv.is_rm(f->get_range())) {
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m_conv.mk_rm_const(f, result);
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return BR_DONE;
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}
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if (m().is_eq(f)) {
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SASSERT(num == 2);
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TRACE("fpa2bv_rw", tout << "(= " << mk_ismt2_pp(args[0], m()) << " " <<
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mk_ismt2_pp(args[1], m()) << ")" << std::endl;);
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SASSERT(m().get_sort(args[0]) == m().get_sort(args[1]));
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sort * ds = f->get_domain()[0];
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if (m_conv.is_float(ds)) {
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m_conv.mk_eq(args[0], args[1], result);
|
||||
return BR_DONE;
|
||||
}
|
||||
else if (m_conv.is_rm(ds)) {
|
||||
result = m().mk_eq(args[0], args[1]);
|
||||
return BR_DONE;
|
||||
}
|
||||
return BR_FAILED;
|
||||
}
|
||||
else 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;
|
||||
}
|
||||
else if (m().is_distinct(f)) {
|
||||
sort * ds = f->get_domain()[0];
|
||||
if (m_conv.is_float(ds) || m_conv.is_rm(ds)) {
|
||||
m_conv.mk_distinct(f, num, args, result);
|
||||
return BR_DONE;
|
||||
}
|
||||
return BR_FAILED;
|
||||
}
|
||||
|
||||
if (m_conv.is_float_family(f)) {
|
||||
switch (f->get_decl_kind()) {
|
||||
case OP_FPA_RM_NEAREST_TIES_TO_AWAY:
|
||||
case OP_FPA_RM_NEAREST_TIES_TO_EVEN:
|
||||
case OP_FPA_RM_TOWARD_NEGATIVE:
|
||||
case OP_FPA_RM_TOWARD_POSITIVE:
|
||||
case OP_FPA_RM_TOWARD_ZERO: m_conv.mk_rounding_mode(f, result); return BR_DONE;
|
||||
case OP_FPA_NUM: m_conv.mk_numeral(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_PLUS_INF: m_conv.mk_pinf(f, result); return BR_DONE;
|
||||
case OP_FPA_MINUS_INF: m_conv.mk_ninf(f, result); return BR_DONE;
|
||||
case OP_FPA_PLUS_ZERO: m_conv.mk_pzero(f, result); return BR_DONE;
|
||||
case OP_FPA_MINUS_ZERO: m_conv.mk_nzero(f, result); return BR_DONE;
|
||||
case OP_FPA_NAN: m_conv.mk_nan(f, result); return BR_DONE;
|
||||
case OP_FPA_ADD: m_conv.mk_add(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_SUB: m_conv.mk_sub(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_NEG: m_conv.mk_neg(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_MUL: m_conv.mk_mul(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_DIV: m_conv.mk_div(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_REM: m_conv.mk_rem(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_ABS: m_conv.mk_abs(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_FMA: m_conv.mk_fma(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_SQRT: m_conv.mk_sqrt(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_ROUND_TO_INTEGRAL: m_conv.mk_round_to_integral(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_EQ: m_conv.mk_float_eq(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_LT: m_conv.mk_float_lt(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_GT: m_conv.mk_float_gt(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_LE: m_conv.mk_float_le(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_GE: m_conv.mk_float_ge(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_ZERO: m_conv.mk_is_zero(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_NAN: m_conv.mk_is_nan(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_INF: m_conv.mk_is_inf(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_NORMAL: m_conv.mk_is_normal(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_SUBNORMAL: m_conv.mk_is_subnormal(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_POSITIVE: m_conv.mk_is_positive(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_IS_NEGATIVE: m_conv.mk_is_negative(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_FP: m_conv.mk_to_fp(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_FP_UNSIGNED: m_conv.mk_to_fp_unsigned(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_FP: m_conv.mk_fp(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_UBV: m_conv.mk_to_ubv(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_SBV: m_conv.mk_to_sbv(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_REAL: m_conv.mk_to_real(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_TO_IEEE_BV: m_conv.mk_to_ieee_bv(f, num, args, result); return BR_DONE;
|
||||
|
||||
case OP_FPA_MIN: m_conv.mk_min(f, num, args, result); return BR_REWRITE_FULL;
|
||||
case OP_FPA_MAX: m_conv.mk_max(f, num, args, result); return BR_REWRITE_FULL;
|
||||
|
||||
case OP_FPA_INTERNAL_MIN_UNSPECIFIED: result = m_conv.mk_min_unspecified(f, args[0], args[1]); return BR_DONE;
|
||||
case OP_FPA_INTERNAL_MAX_UNSPECIFIED: result = m_conv.mk_max_unspecified(f, args[0], args[1]); return BR_DONE;
|
||||
case OP_FPA_INTERNAL_MIN_I: m_conv.mk_min_i(f, num, args, result); return BR_DONE;
|
||||
case OP_FPA_INTERNAL_MAX_I: m_conv.mk_max_i(f, num, args, result); return BR_DONE;
|
||||
|
||||
case OP_FPA_INTERNAL_RM:
|
||||
case OP_FPA_INTERNAL_BVWRAP:
|
||||
case OP_FPA_INTERNAL_BVUNWRAP:
|
||||
case OP_FPA_INTERNAL_TO_REAL_UNSPECIFIED:
|
||||
case OP_FPA_INTERNAL_TO_UBV_UNSPECIFIED:
|
||||
case OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED: return BR_FAILED;
|
||||
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;);
|
||||
NOT_IMPLEMENTED_YET();
|
||||
}
|
||||
}
|
||||
else {
|
||||
SASSERT(!m_conv.is_float_family(f));
|
||||
bool is_float_uf = m_conv.is_float(f->get_range()) || m_conv.is_rm(f->get_range());
|
||||
|
||||
for (unsigned i = 0; i < f->get_arity(); i++) {
|
||||
sort * di = f->get_domain()[i];
|
||||
is_float_uf |= m_conv.is_float(di) || m_conv.is_rm(di);
|
||||
}
|
||||
|
||||
if (is_float_uf) {
|
||||
m_conv.mk_uninterpreted_function(f, num, args, result);
|
||||
return BR_DONE;
|
||||
}
|
||||
}
|
||||
|
||||
return BR_FAILED;
|
||||
}
|
||||
|
||||
bool pre_visit(expr * t)
|
||||
{
|
||||
TRACE("fpa2bv", tout << "pre_visit: " << mk_ismt2_pp(t, m()) << std::endl;);
|
||||
|
||||
if (is_quantifier(t)) {
|
||||
quantifier * q = to_quantifier(t);
|
||||
TRACE("fpa2bv", tout << "pre_visit quantifier [" << q->get_id() << "]: " << mk_ismt2_pp(q->get_expr(), m()) << std::endl;);
|
||||
sort_ref_vector new_bindings(m_manager);
|
||||
for (unsigned i = 0 ; i < q->get_num_decls(); i++)
|
||||
new_bindings.push_back(q->get_decl_sort(i));
|
||||
SASSERT(new_bindings.size() == q->get_num_decls());
|
||||
m_bindings.append(new_bindings);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
bool pre_visit(expr * t);
|
||||
|
||||
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) {
|
||||
unsigned curr_sz = m_bindings.size();
|
||||
SASSERT(old_q->get_num_decls() <= curr_sz);
|
||||
unsigned num_decls = old_q->get_num_decls();
|
||||
unsigned old_sz = curr_sz - num_decls;
|
||||
string_buffer<> name_buffer;
|
||||
ptr_buffer<sort> new_decl_sorts;
|
||||
sbuffer<symbol> new_decl_names;
|
||||
for (unsigned i = 0; i < num_decls; i++) {
|
||||
symbol const & n = old_q->get_decl_name(i);
|
||||
sort * s = old_q->get_decl_sort(i);
|
||||
if (m_conv.is_float(s)) {
|
||||
unsigned ebits = m_conv.fu().get_ebits(s);
|
||||
unsigned sbits = m_conv.fu().get_sbits(s);
|
||||
name_buffer.reset();
|
||||
name_buffer << n << ".bv";
|
||||
new_decl_names.push_back(symbol(name_buffer.c_str()));
|
||||
new_decl_sorts.push_back(m_conv.bu().mk_sort(sbits+ebits));
|
||||
}
|
||||
else {
|
||||
new_decl_sorts.push_back(s);
|
||||
new_decl_names.push_back(n);
|
||||
}
|
||||
}
|
||||
result = m().mk_quantifier(old_q->is_forall(), new_decl_sorts.size(), new_decl_sorts.c_ptr(), new_decl_names.c_ptr(),
|
||||
new_body, old_q->get_weight(), old_q->get_qid(), old_q->get_skid(),
|
||||
old_q->get_num_patterns(), new_patterns, old_q->get_num_no_patterns(), new_no_patterns);
|
||||
result_pr = 0;
|
||||
m_bindings.shrink(old_sz);
|
||||
TRACE("fpa2bv", tout << "reduce_quantifier[" << old_q->get_depth() << "]: " <<
|
||||
mk_ismt2_pp(old_q->get_expr(), m()) << std::endl <<
|
||||
" new body: " << mk_ismt2_pp(new_body, m()) << std::endl;
|
||||
tout << "result = " << mk_ismt2_pp(result, m()) << std::endl;);
|
||||
return true;
|
||||
}
|
||||
proof_ref & result_pr);
|
||||
|
||||
bool reduce_var(var * t, expr_ref & result, proof_ref & result_pr) {
|
||||
if (t->get_idx() >= m_bindings.size())
|
||||
return false;
|
||||
// unsigned inx = m_bindings.size() - t->get_idx() - 1;
|
||||
bool reduce_var(var * t, expr_ref & result, proof_ref & result_pr);
|
||||
|
||||
expr_ref new_exp(m());
|
||||
sort * s = t->get_sort();
|
||||
if (m_conv.is_float(s))
|
||||
{
|
||||
expr_ref new_var(m());
|
||||
unsigned ebits = m_conv.fu().get_ebits(s);
|
||||
unsigned sbits = m_conv.fu().get_sbits(s);
|
||||
new_var = m().mk_var(t->get_idx(), m_conv.bu().mk_sort(sbits+ebits));
|
||||
m_conv.mk_fp(m_conv.bu().mk_extract(sbits+ebits-1, sbits+ebits-1, new_var),
|
||||
m_conv.bu().mk_extract(ebits - 1, 0, new_var),
|
||||
m_conv.bu().mk_extract(sbits+ebits-2, ebits, new_var),
|
||||
new_exp);
|
||||
}
|
||||
else
|
||||
new_exp = m().mk_var(t->get_idx(), s);
|
||||
|
||||
result = new_exp;
|
||||
result_pr = 0;
|
||||
TRACE("fpa2bv", tout << "reduce_var: " << mk_ismt2_pp(t, m()) << " -> " << mk_ismt2_pp(result, m()) << std::endl;);
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
template class rewriter_tpl<fpa2bv_rewriter_cfg>;
|
||||
|
||||
struct fpa2bv_rewriter : public rewriter_tpl<fpa2bv_rewriter_cfg> {
|
||||
fpa2bv_rewriter_cfg m_cfg;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue