author | blanchet |
Fri, 04 Jan 2013 21:56:19 +0100 | |
changeset 50733 | 7ce87037fbeb |
parent 50672 | ab5b8b5c9cbe |
child 51128 | 0021ea861129 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Sledgehammer/sledgehammer_proof.ML |
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Author: Jasmin Blanchette, TU Muenchen |
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Author: Steffen Juilf Smolka, TU Muenchen |
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Basic data structures for representing and basic methods |
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for dealing with Isar proof texts. |
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*) |
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signature SLEDGEHAMMER_PROOF = |
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sig |
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type label = string * int |
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type facts = label list * string list |
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datatype isar_qualifier = Show | Then | Ultimately |
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datatype isar_step = |
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Fix of (string * typ) list | |
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Let of term * term | |
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Assume of label * term | |
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Obtain of |
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isar_qualifier list * (string * typ) list * label * term * byline | |
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Prove of isar_qualifier list * label * term * byline |
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and byline = |
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By_Metis of facts | |
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Case_Split of isar_step list list * facts |
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val string_for_label : label -> string |
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val metis_steps_top_level : isar_step list -> int |
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val metis_steps_total : isar_step list -> int |
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end |
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structure Sledgehammer_Proof : SLEDGEHAMMER_PROOF = |
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struct |
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type label = string * int |
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type facts = label list * string list |
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datatype isar_qualifier = Show | Then | Ultimately |
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datatype isar_step = |
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Fix of (string * typ) list | |
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Let of term * term | |
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Assume of label * term | |
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Obtain of isar_qualifier list * (string * typ) list * label * term * byline | |
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Prove of isar_qualifier list * label * term * byline |
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and byline = |
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By_Metis of facts | |
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Case_Split of isar_step list list * facts |
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fun string_for_label (s, num) = s ^ string_of_int num |
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fun metis_steps_top_level proof = |
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fold (fn Obtain _ => Integer.add 1 | Prove _ => Integer.add 1 | _ => I) |
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proof 0 |
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fun metis_steps_total proof = |
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fold (fn Obtain _ => Integer.add 1 |
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| Prove (_, _, _, By_Metis _) => Integer.add 1 |
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| Prove (_, _, _, Case_Split (cases, _)) => |
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Integer.add (fold (Integer.add o metis_steps_total) cases 1) |
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| _ => I) proof 0 |
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end |