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ensure generation is increased #2667

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-11-13 19:18:54 -08:00
parent 12819640b7
commit 5f90e72d85
4 changed files with 52 additions and 86 deletions
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17
src/smt/cost_evaluator.cpp
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@ -20,30 +20,27 @@ Revision History:
#include "util/warning.h"
cost_evaluator::cost_evaluator(ast_manager & m):
m_manager(m),
m(m),
m_util(m) {
}
float cost_evaluator::eval(expr * f) const {
#define E(IDX) eval(to_app(f)->get_arg(IDX))
if (is_app(f)) {
unsigned num_args;
family_id fid = to_app(f)->get_family_id();
if (fid == m_manager.get_basic_family_id()) {
if (fid == m.get_basic_family_id()) {
switch (to_app(f)->get_decl_kind()) {
case OP_TRUE: return 1.0f;
case OP_FALSE: return 0.0f;
case OP_NOT: return E(0) == 0.0f ? 1.0f : 0.0f;
case OP_AND:
num_args = to_app(f)->get_num_args();
for (unsigned i = 0; i < num_args; i++)
if (E(i) == 0.0f)
case OP_AND:
for (expr* arg : *to_app(f))
if (eval(arg) == 0.0f)
return 0.0f;
return 1.0f;
case OP_OR:
num_args = to_app(f)->get_num_args();
for (unsigned i = 0; i < num_args; i++)
if (E(i) != 0.0f)
for (expr* arg : *to_app(f))
if (eval(arg) != 0.0f)
return 1.0f;
return 0.0f;
case OP_ITE: return E(0) != 0.0f ? E(1) : E(2);