alphacep / alphacep/vosk-api

Runtime: Rebuilding repository / Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes

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Description

**Edit: just saw there was a new release with "Fixes for lattice construction". Will try that and report back.**

Hello there!

I'm running parallel transcription jobs using one recognizer instance per job. More or less 3% of the jobs are returning bad transcriptions (usually "the the the" or some variation of it). When it happens, I get messages like this:

```
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39004704,169056,10889208), after rebuilding, repo size was 30202176, effective beam was 5.9772 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39078112,166560,10761912), after rebuilding, repo size was 30382048, effective beam was 5.96487 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39287392,165152,10632816), after rebuilding, repo size was 30607040, effective beam was 5.96444 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39300192,162400,10546344), after rebuilding, repo size was 30658624, effective beam was 5.92997 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39311520,160800,10561272), after rebuilding, repo size was 30832672, effective beam was 5.87253 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39380960,162432,10497984), after rebuilding, repo size was 30972608, effective beam was 5.84342 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39416736,157696,10433400), after rebuilding, repo size was 31099904, effective beam was 5.82206 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39511712,157504,10508424), after rebuilding, repo size was 31215648, effective beam was 5.80311 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39478528,155264,10420152), after rebuilding, repo size was 31215904, effective beam was 5.77253 vs. requested beam 6
LOG (VoskAPI:RebuildRepository():determinize-lattice-pruned.cc:283) Rebuilding repository.
WARNING (VoskAPI:CheckMemoryUsage():determinize-lattice-pruned.cc:316) Did not reach requested beam in determinize-lattice: size exceeds maximum 50000000 bytes; (repo,arcs,elems) = (39833312,153440,10056048), after rebuilding, repo size was 31604736, effective beam was 5.80277 vs. requested beam 6
```

Is this a known bug / limitation or I'm doing something wrong?

I was wondering if there's a way I can check for this behavior before or after calling `vosk_recognizer_final_result` so I can retry the transcription job.

Thanks!

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