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handle eq-propagate arithetic rule

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Ken McMillan 2013-11-08 16:18:48 -08:00
parent 763ae0d246
commit 749f95c9d7
5 changed files with 166 additions and 14 deletions
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20
src/interp/iz3mgr.cpp
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@ -446,6 +446,17 @@ iz3mgr::ast iz3mgr::z3_simplify(const ast &e){
return cook(result);
}
iz3mgr::ast iz3mgr::z3_really_simplify(const ast &e){
::expr * a = to_expr(e.raw());
params_ref simp_params;
simp_params.set_bool(":som",true);
simp_params.set_bool(":sort-sums",true);
th_rewriter m_rw(m(), simp_params);
expr_ref result(m());
m_rw(a, result);
return cook(result);
}
#if 0
static rational lcm(const rational &x, const rational &y){
@ -485,6 +496,15 @@ static void abs_rat(std::vector<rational> &rats){
}
}
bool iz3mgr::is_farkas_coefficient_negative(const ast &proof, int n){
rational r;
symb s = sym(proof);
bool ok = s->get_parameter(n+2).is_rational(r);
if(!ok)
throw "Bad Farkas coefficient";
return r.is_neg();
}
void iz3mgr::get_farkas_coeffs(const ast &proof, std::vector<rational>& rats){
symb s = sym(proof);
int numps = s->get_num_parameters();