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add print to SMT-LIB format from solver

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-10-31 14:24:21 +01:00
parent 43269795c8
commit b4600ffda0
2 changed files with 21 additions and 0 deletions
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1
examples/c++/example.cpp
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@ -21,6 +21,7 @@ void demorgan() {
// adding the negation of the conjecture as a constraint.
s.add(!conjecture);
std::cout << s << "\n";
std::cout << s.to_smt2() << "\n";
switch (s.check()) {
case unsat: std::cout << "de-Morgan is valid\n"; break;
case sat: std::cout << "de-Morgan is not valid\n"; break;

20
src/api/c++/z3++.h
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@ -1314,6 +1314,26 @@ namespace z3 {
expr_vector assertions() const { Z3_ast_vector r = Z3_solver_get_assertions(ctx(), m_solver); check_error(); return expr_vector(ctx(), r); }
expr proof() const { Z3_ast r = Z3_solver_get_proof(ctx(), m_solver); check_error(); return expr(ctx(), r); }
friend std::ostream & operator<<(std::ostream & out, solver const & s) { out << Z3_solver_to_string(s.ctx(), s); return out; }
std::string to_smt2(char const* status = "unknown") {
array<Z3_ast> es(assertions());
Z3_ast const* fmls = es.ptr();
Z3_ast fml = 0;
unsigned sz = es.size();
if (sz > 0) {
--sz;
fml = fmls[sz];
}
else {
fml = ctx().bool_val(true);
}
return std::string(Z3_benchmark_to_smtlib_string(
ctx(),
"", "", status, "",
sz,
fmls,
fml));
}
};
class goal : public object {