Proof checker fix #183
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Proof checker fix #183
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…ifiers file, except for those with equality
… Correct Tableau prover accordingly.
| if ( | ||
| isSubset(ref(t1).right, b.right + phiImpPsi) && | ||
| isSubset(ref(t2).right, b.right + psiImpPhi) && | ||
| isSubset(b.right, ref(t1).right union ref(t2).right + phiIffPsi) |
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I was adapting this to basic step tactics, and noticed that this is perhaps too restrictive? We should have a more uniform policy on where and how much we allow weakening.
It is perhaps enough to check that
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Maybe, but it's the same semantic as what we had. In general we don't permit arbitrary weakening in non-Weakening proof steps.
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These changes also need to simultaneously be propagated to the |
Adapt Proof Checker Fixes to Basic Step Tactics
sankalpgambhir
approved these changes
Nov 8, 2023
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Thank you :) |
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To merge after #181. Fixes #182