File: IMMEDIATE-FORCE-MODEP.html

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<html>
<head><title>IMMEDIATE-FORCE-MODEP.html  --  ACL2 Version 3.1</title></head>
<body text=#000000 bgcolor="#FFFFFF">
<h2>IMMEDIATE-FORCE-MODEP</h2>when executable counterpart is <a href="ENABLE.html">enable</a>d,
<code>   </code> <a href="FORCE.html">force</a>d hypotheses are attacked immediately
<pre>Major Section:  <a href="MISCELLANEOUS.html">MISCELLANEOUS</a>
</pre><p>

Also see <a href="DISABLE-IMMEDIATE-FORCE-MODEP.html">disable-immediate-force-modep</a> and
see <a href="ENABLE-IMMEDIATE-FORCE-MODEP.html">enable-immediate-force-modep</a>.<p>

This function symbol is defined simply to provide a <a href="RUNE.html">rune</a> which can
be <a href="ENABLE.html">enable</a>d and <a href="DISABLE.html">disable</a>d.  Enabling

<pre>
(:executable-counterpart immediate-force-modep)
</pre>

causes ACL2 to attack <a href="FORCE.html">force</a>d hypotheses immediately instead of
delaying them to the next forcing round.

<pre>
Example Hints
:in-theory (disable (:executable-counterpart immediate-force-modep))
           ; delay forced hyps to forcing round
:in-theory (enable (:executable-counterpart immediate-force-modep))
           ; split on forced hyps immediately
<p>
</pre>

See <a href="FORCE.html">force</a> for background information.  When a <code><a href="FORCE.html">force</a></code>d
hypothesis cannot be established a record is made of that fact and
the proof continues.  When the proof succeeds a ``forcing round'' is
undertaken in which the system attempts to prove each of the <a href="FORCE.html">force</a>d
hypotheses explicitly.  However, if the <a href="RUNE.html">rune</a>
<code>(:executable-counterpart immediate-force-modep)</code> is <a href="ENABLE.html">enable</a>d at the
time the hypothesis is <a href="FORCE.html">force</a>d, then ACL2 does not delay the attempt
to prove that hypothesis but undertakes the attempt more or less
immediately.
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