incrVacuumStep   50511 ext/sqlite3/libsqlite/sqlite3.c     rc = incrVacuumStep(pBt, 0, btreePagecount(pBt));
incrVacuumStep   50568 ext/sqlite3/libsqlite/sqlite3.c       rc = incrVacuumStep(pBt, nFin, iFree);