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Commit 2b811033 authored by Jean-Christophe's avatar Jean-Christophe
Browse files

same fringe: simplification of termination proof

parent 87c6bc75
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examples/programs/same_fringe.mlw
View file @ 2b811033
......@@ -38,14 +38,7 @@ module SameFringe
(* the enum of a tree [t], prepended to a given enum [e] *)
logic leftlen (t: tree) : int = match t with
| Empty -> 0
| Node l _ _ -> 1 + leftlen l
end
lemma leftlen_nonneg: forall t: tree. leftlen t >= 0
let rec enum t e variant { leftlen t } =
let rec enum t e variant { length (elements t) } =
{ }
match t with
| Empty -> e
......
examples/programs/same_fringe/why3session.xml
View file @ 2b811033
......@@ -3,59 +3,68 @@
<why3session name="examples/programs/same_fringe/why3session.xml">
<file name="../same_fringe.mlw" verified="true" expanded="true">
<theory name="SameFringe" verified="true" expanded="true">
<goal name="leftlen_nonneg" sum="d2d87a3927713430311330ea3f872f8d" proved="true" expanded="true">
<proof prover="coq" timelimit="10" edited="same_fringe.mlw_SameFringe_leftlen_nonneg_1.v" obsolete="false">
<result status="valid" time="0.59"/>
</proof>
</goal>
<goal name="WP_parameter enum" expl="correctness of parameter enum" sum="2dde99e9e4d7639b161a3faf6e97bf47" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.87"/>
</proof>
<goal name="WP_parameter enum" expl="correctness of parameter enum" sum="837cc2fd8bfff836407e3e8e9f570e95" proved="true" expanded="true">
<transf name="split_goal" proved="true" expanded="true">
<goal name="WP_parameter enum.1" expl="correctness of parameter enum" sum="ff13de762a4ee83598a46a358059e421" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.03"/>
</proof>
</goal>
<goal name="WP_parameter enum.2" expl="correctness of parameter enum" sum="96ed26af13b225ea4adceaa25a84110f" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.06"/>
</proof>
</goal>
<goal name="WP_parameter enum.3" expl="correctness of parameter enum" sum="29b38dccc0afba8ad3360269e53429ed" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.07"/>
</proof>
</goal>
</transf>
</goal>
<goal name="WP_parameter eq_enum" expl="correctness of parameter eq_enum" sum="cb0dc47b965bccbbddec9afc19d506a6" proved="true" expanded="true">
<goal name="WP_parameter eq_enum" expl="correctness of parameter eq_enum" sum="d4912d61fbf2442066c26b9e98cd3a7c" proved="true" expanded="true">
<transf name="split_goal" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.1" expl="correctness of parameter eq_enum" sum="22293cfa748a377a7ef45ef9c269e46e" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.1" expl="correctness of parameter eq_enum" sum="0ce8d1936f78b55a199ed67672f13816" proved="true" expanded="true">
<proof prover="cvc3" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.11"/>
<result status="valid" time="0.15"/>
</proof>
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.04"/>
<result status="valid" time="0.08"/>
</proof>
<proof prover="z3" timelimit="10" edited="" obsolete="false">
<result status="valid" time="3.11"/>
<result status="valid" time="6.48"/>
</proof>
</goal>
<goal name="WP_parameter eq_enum.2" expl="correctness of parameter eq_enum" sum="026769b58a16abea86cafcb8c45b893d" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.2" expl="correctness of parameter eq_enum" sum="b0175f21a5cc4c1548c88a03a8f6ee69" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.07"/>
<result status="valid" time="0.14"/>
</proof>
</goal>
<goal name="WP_parameter eq_enum.3" expl="correctness of parameter eq_enum" sum="84a8181acf56c883f3115292701baf53" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.3" expl="correctness of parameter eq_enum" sum="0536a657d884c2e3122ce33c56cf12e2" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.03"/>
</proof>
</goal>
<goal name="WP_parameter eq_enum.4" expl="correctness of parameter eq_enum" sum="e5c26d89e960ac60062a2bbf332f621f" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.4" expl="correctness of parameter eq_enum" sum="6b167a024ccbdc15b83645ab93446171" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.03"/>
<result status="valid" time="0.05"/>
</proof>
</goal>
<goal name="WP_parameter eq_enum.5" expl="correctness of parameter eq_enum" sum="72994225ed86ff50a7c92f47f77407a6" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.5" expl="correctness of parameter eq_enum" sum="a9ff84965c0ee639a8951eeba6313bd1" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.02"/>
<result status="valid" time="0.03"/>
</proof>
</goal>
<goal name="WP_parameter eq_enum.6" expl="correctness of parameter eq_enum" sum="79a1095a08a00d64512e15170f9d196b" proved="true" expanded="true">
<goal name="WP_parameter eq_enum.6" expl="correctness of parameter eq_enum" sum="11cdc2edd2763334efdf4da7a0b0633d" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.03"/>
<result status="valid" time="0.04"/>
</proof>
</goal>
</transf>
</goal>
<goal name="WP_parameter same_fringe" expl="normal postcondition" sum="78714b83a0adc89473a2d8ca868bb95e" proved="true" expanded="true">
<goal name="WP_parameter same_fringe" expl="normal postcondition" sum="c1a187d0841b65a4871309bcd63e2834" proved="true" expanded="true">
<proof prover="alt-ergo" timelimit="10" edited="" obsolete="false">
<result status="valid" time="0.03"/>
<result status="valid" time="0.04"/>
</proof>
</goal>
</theory>
......
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