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add test case for substitution

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-09-24 05:13:11 +03:00
parent c1384095f3
commit 6554ac787a
2 changed files with 51 additions and 0 deletions
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50
src/test/expr_substitution.cpp Normal file
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@ -0,0 +1,50 @@
#include "expr_substitution.h"
#include "smt_params.h"
#include "substitution.h"
#include "unifier.h"
#include "bv_decl_plugin.h"
#include "ast_pp.h"
#include "arith_decl_plugin.h"
#include "reg_decl_plugins.h"
#include "th_rewriter.h"
expr* mk_bv_xor(bv_util& bv, expr* a, expr* b) {
expr* args[2];
args[0] = a;
args[1] = b;
return bv.mk_bv_xor(2, args);
}
expr* mk_bv_and(bv_util& bv, expr* a, expr* b) {
expr* args[2];
args[0] = a;
args[1] = b;
ast_manager& m = bv.get_manager();
return m.mk_app(bv.get_family_id(), OP_BAND, 2, args);
}
void tst_expr_substitution() {
memory::initialize(0);
ast_manager m;
reg_decl_plugins(m);
bv_util bv(m);
expr_ref a(m), b(m), c(m);
expr_ref x(m);
x = m.mk_const(symbol("x"), bv.mk_sort(8));
a = mk_bv_and(bv, mk_bv_xor(bv, x,bv.mk_numeral(8,8)), mk_bv_xor(bv,x,x));
b = x;
c = bv.mk_bv_sub(x, bv.mk_numeral(4, 8));
expr_substitution subst(m);
subst.insert(b, c);
th_rewriter rw(m);
rw.set_substitution(&subst);
expr_ref new_a(m);
proof_ref pr(m);
rw(a, new_a, pr);
std::cout << mk_pp(new_a, m) << "\n";
}

1
src/test/main.cpp
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@ -215,6 +215,7 @@ int main(int argc, char ** argv) {
TST(rcf);
TST(polynorm);
TST(qe_arith);
TST(expr_substitution);
}
void initialize_mam() {}