## Summary
<!--Explain briefly what goes wrong and explain why you believe this is a bug and not the intended behavior of SQLite (if it is not a crash).-->**No review yet**

## Minimized query

```sql
PRAGMA vdbe_addoptrace = FALSE;
.imposter off
PRAGMA synchronous;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;
.stats
CREATE VIRTUAL TABLE t0 USING fts4("x", "y", "z");
DROP  TABLE t0;
VACUUM main;

VACUUM main;

PRAGMA empty_result_callbacks = YES;
```

## Actual output

```sql
2
Memory Used:                         67704 (max 67744) bytes
Number of Outstanding Allocations:   141 (max 142)
Number of Pcache Overflow Bytes:     8464 (max 8464) bytes
Largest Allocation:                  48000 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 75)
Successful lookaside attempts:       92
Lookaside failures due to size:      0
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     0
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   736 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            6952
Bytes sent to write():               2
Read() system calls:                 13
Write() system calls:                1
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         66952 (max 331000) bytes
Number of Outstanding Allocations:   123 (max 259)
Number of Pcache Overflow Bytes:     8464 (max 55144) bytes
Largest Allocation:                  87200 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 96)
Successful lookaside attempts:       1204
Lookaside failures due to size:      6
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     56
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7302
Bytes sent to write():               1010
Read() system calls:                 16
Write() system calls:                2
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         66952 (max 331032) bytes
Number of Outstanding Allocations:   123 (max 263)
Number of Pcache Overflow Bytes:     8464 (max 55144) bytes
Largest Allocation:                  87200 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 96)
Successful lookaside attempts:       2316
Lookaside failures due to size:      12
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7399
Bytes sent to write():               2024
Read() system calls:                 18
Write() system calls:                3
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         66952 (max 331032) bytes
Number of Outstanding Allocations:   123 (max 263)
Number of Pcache Overflow Bytes:     8464 (max 55144) bytes
Largest Allocation:                  87200 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 96)
Successful lookaside attempts:       3428
Lookaside failures due to size:      18
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7496
Bytes sent to write():               3039
Read() system calls:                 20
Write() system calls:                4
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         66952 (max 331032) bytes
Number of Outstanding Allocations:   123 (max 263)
Number of Pcache Overflow Bytes:     8464 (max 55144) bytes
Largest Allocation:                  87200 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 96)
Successful lookaside attempts:       4540
Lookaside failures due to size:      24
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7593
Bytes sent to write():               4054
Read() system calls:                 22
Write() system calls:                5
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         66952 (max 331032) bytes
Number of Outstanding Allocations:   123 (max 263)
Number of Pcache Overflow Bytes:     8464 (max 55144) bytes
Largest Allocation:                  87200 bytes
Largest Pcache Allocation:           4360 bytes
Lookaside Slots Used:                32 (max 96)
Successful lookaside attempts:       5652
Lookaside failures due to size:      30
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9248 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7690
Bytes sent to write():               5069
Read() system calls:                 24
Write() system calls:                6
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
```

## Expectation

```sql
2
Memory Used:                         68416 (max 68448) bytes
Number of Outstanding Allocations:   151 (max 152)
Number of Pcache Overflow Bytes:     8472 (max 8472) bytes
Largest Allocation:                  48000 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 86)
Successful lookaside attempts:       103
Lookaside failures due to size:      0
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     0
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   632 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7728
Bytes sent to write():               2
Read() system calls:                 14
Write() system calls:                1
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         71880 (max 331576) bytes
Number of Outstanding Allocations:   134 (max 262)
Number of Pcache Overflow Bytes:     12568 (max 55176) bytes
Largest Allocation:                  87360 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 104)
Successful lookaside attempts:       1109
Lookaside failures due to size:      6
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     56
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7866
Bytes sent to write():               1050
Read() system calls:                 17
Write() system calls:                2
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         71880 (max 331576) bytes
Number of Outstanding Allocations:   134 (max 262)
Number of Pcache Overflow Bytes:     12568 (max 55176) bytes
Largest Allocation:                  87360 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 104)
Successful lookaside attempts:       2115
Lookaside failures due to size:      12
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            7963
Bytes sent to write():               2105
Read() system calls:                 19
Write() system calls:                3
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         71880 (max 331576) bytes
Number of Outstanding Allocations:   134 (max 262)
Number of Pcache Overflow Bytes:     12568 (max 55176) bytes
Largest Allocation:                  87360 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 104)
Successful lookaside attempts:       3121
Lookaside failures due to size:      18
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            8060
Bytes sent to write():               3161
Read() system calls:                 21
Write() system calls:                4
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         71880 (max 331576) bytes
Number of Outstanding Allocations:   134 (max 262)
Number of Pcache Overflow Bytes:     12568 (max 55176) bytes
Largest Allocation:                  87360 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 104)
Successful lookaside attempts:       4127
Lookaside failures due to size:      24
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            8157
Bytes sent to write():               4217
Read() system calls:                 23
Write() system calls:                5
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
Memory Used:                         71880 (max 331576) bytes
Number of Outstanding Allocations:   134 (max 262)
Number of Pcache Overflow Bytes:     12568 (max 55176) bytes
Largest Allocation:                  87360 bytes
Largest Pcache Allocation:           4368 bytes
Lookaside Slots Used:                48 (max 104)
Successful lookaside attempts:       5133
Lookaside failures due to size:      30
Lookaside failures due to OOM:       0
Pager Heap Usage:                    9256 bytes
Page cache hits:                     58
Page cache misses:                   0
Page cache writes:                   0
Page cache spills:                   0
Temporary data spilled to disk:      0
Schema Heap Usage:                   0 bytes
Statement Heap/Lookaside Usage:      0 bytes
Bytes received by read():            8254
Bytes sent to write():               5273
Read() system calls:                 25
Write() system calls:                6
Bytes read from storage:             0
Bytes written to storage:            0
Cancelled write bytes:               0
```

## Flag

```

```

