Parser exhausts memory on large SMV files (converted from AIG)

on the attached `.smv` from `AIG_SMV_08` benchmark, ebmc `4.2` and current `4.4` fail with 
```
Parsing intel048.aig.smv
file intel048.aig.smv line 271364: memory exhausted before `a471304'
PARSING ERROR
```
due to bison exhausting its memory