Opened 5 years ago
Closed 5 years ago
#20126 closed defect (fixed)
QEPCAD does not pass optional "memcells" to the constructor
Reported by:  yzh  Owned by:  

Priority:  major  Milestone:  sage7.1 
Component:  interfaces  Keywords:  QEPCAD 
Cc:  mkoeppe, rws, tmonteil, dimpase  Merged in:  
Authors:  Yuan Zhou  Reviewers:  Dima Pasechnik 
Report Upstream:  N/A  Work issues:  
Branch:  4196760 (Commits)  Commit:  41967600e912f08cd8c6bfc854919e30f64a329f 
Dependencies:  Stopgaps: 
Description
In the following problem of simplifying quantifier free formulas, QEPCAD crashed with the failure "Too few cells reclaimed."
sage: var('x,y,z') (x, y, z) sage: conds = [z < 0, y + z < 0, x^2 + x*y + 2*x*z + 2*y*z  x < 0, \ x^2 + x*y + 3*x*z + 2*y*z + 2*z^2  x  z < 0, \ 2*x + 1 < 0, x*y  x*z  2*y*z  2*z^2 + z < 0, \ x + 3*y + 3*z  1 < 0] sage: qepcad(conds) Qepcad crashed  automatically restarting. sage: qe = qepcad(conds, interact=True) sage: qe.go() QEPCAD object has moved to phase 'Before Projection (z)' sage: qe.go() QEPCAD object has moved to phase 'Before Choice' sage: qe.go() ** 90355 cells, 19999 arrays in 17 milliseconds. Failure occurred in: GCSI (final check) Reason for the failure: Too few cells reclaimed. N = 90355 NU = 1000000 RHO = 10 Now the FAIL handler is aborting the program ...
This could be solved by augmenting memcells
to 200000. One excepts that
sage: qepcad(conds, memcells=2000000) 2 x  1 > 0 /\ z > 0 /\ z  y < 0 /\ 3 z + 3 y + x  1 < 0
However, the current Sage interface to QEPCAD forgets to pass memcells
to the constructor of QEPCAD.
Change History (9)
comment:1 Changed 5 years ago by
 Branch set to u/yzh/qepcad_does_not_pass_optional__memcells__to_the_constructor
comment:2 Changed 5 years ago by
 Cc rws tmonteil added
 Commit set to 9d8c2b3c9d3d7e8b9b1108c2b68c2d4ce5ed77b5
 Status changed from new to needs_review
comment:3 Changed 5 years ago by
 Cc dimpase added
comment:4 Changed 5 years ago by
 Status changed from needs_review to needs_work
 Work issues set to add doctest
comment:5 Changed 5 years ago by
 Commit changed from 9d8c2b3c9d3d7e8b9b1108c2b68c2d4ce5ed77b5 to 41967600e912f08cd8c6bfc854919e30f64a329f
Branch pushed to git repo; I updated commit sha1. New commits:
4196760  add doctest where qepcad constructs with a given memcells value

comment:6 followup: ↓ 7 Changed 5 years ago by
I added the doctest above. However, I failed to run sage t
on qepcad.py due to #20128; it caused 91 doctests failed.
comment:7 in reply to: ↑ 6 Changed 5 years ago by
 Reviewers set to Dima Pasechnik
 Status changed from needs_work to positive_review
 Work issues add doctest deleted
comment:8 Changed 5 years ago by
Thank you! :)
comment:9 Changed 5 years ago by
 Branch changed from u/yzh/qepcad_does_not_pass_optional__memcells__to_the_constructor to 41967600e912f08cd8c6bfc854919e30f64a329f
 Resolution set to fixed
 Status changed from positive_review to closed
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OK, please add the doctest
then I will be happy to give it positive review.