outer loop, to continue search after recursive call

src/math/polysat/viable.cpp

@@ -1618,6 +1618,7 @@ namespace polysat {
         val = to_cover_lo;
 
         rational progress; // = 0
+        while (true) {
             while (true) {
                 entry* e = nullptr;
 
@@ -1643,7 +1644,7 @@ namespace polysat {
                     }
                 }
 
-            // no more progress
+                // no more progress on current layer
                 if (!e)
                     break;
 
@@ -1744,7 +1745,7 @@ namespace polysat {
 
             SASSERT(result == l_undef);
             // TODO: continue with intervals at current level
-
+        }
         NOT_IMPLEMENTED_YET();
         return l_undef;
     }