[fix] Fix CachingSolver
#74
| Job | Run time |
|---|---|
| 12m 2s | |
| 5m 31s | |
| 38m 14s | |
| 17m 6s | |
| 6m 48s | |
| 41m 15s | |
| 15m 19s | |
| 21m 6s | |
| 19m 16s | |
| 16m 43s | |
| 15m 12s | |
| 1h 10m 56s | |
| 49m 7s | |
| 53m 54s | |
| 17m 42s | |
| 34m 57s | |
| 14m 52s | |
| 16m 9s | |
| 15m 47s | |
| 16m 7s | |
| 8h 18m 3s |