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Proof step 2 from proof eisdir (conclusion)

⊦ ¬ ⌊EISDIR⌋

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ ⌊err⌋ ↔ err ≠ ESUCCESS ∧ err ≠ EEXISTS ∧ err ≠ ENOENT ∧ err ≠ EISDIR ∧ err ≠ ENOTEMPTY ∧ err ≠ ENOTDIR ∧ err ≠ EBADFD ∧ err ≠ EACCESS

Rule argument

Additional information

[Concretesimprules((Csimpnamedseq(class,,, ⊦ ⌊err⌋ ↔ err ≠ ESUCCESS ∧ err ≠ EEXISTS ∧ err ≠ ENOENT ∧ err ≠ EISDIR ∧ err ≠ ENOTEMPTY ∧ err ≠ ENOTDIR ∧ err ≠ EBADFD ∧ err ≠ EACCESS) Csimpnamedseq(error,,disj-10, ⊦ ENOENT ≠ EISDIR) Csimpnamedseq(error,,disj-14, ⊦ EEXISTS ≠ EISDIR) Csimpnamedseq(error,,disj-32, ⊦ ESUCCESS ≠ EISDIR)))]