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<!DOCTYPE html>
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<section class="section siteIntro fullScreen verticalFlex" id="intro_screen" data-title="SECURE">
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<h2 class="banner-title">Securing the future of your critical activities</h2>
<p class="banner-desc">The Frama-C source code analysis platform provides tools to make your code safer and more
secure.</p>
<a class="btn cta-download" href="get-frama-c/index.html">
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<b>Frama-C</b></span>
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<section class="section codeDemoScreen textCenter" id="code_demo_screen" data-title="ERROR!">
<div class="sectionContent">
<h3>Trying out Frama-C analyzing
<br />a simple C program</h3>
<div class="slideHeader">
<h4>Browsing the analysis results with Frama-C</h4>
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<span>Interface Overview</span>
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<span>Value Analysis</span>
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<span>Effects Analysis</span>
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<span>Dependency Analysis</span>
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<div class="codeTips">
<div class="title">
<b>01</b>
<span>This command-line creates an analysis project for file
<samp>first.c</samp>.</span>
</div>
<div class="title">
<b>02</b>
<span>Option
<samp>-val</samp> runs the Evolved Value Analysis plug-in and prepares its results.</span>
</div>
<div class="title">
<b>03</b>
<span>Option
<tt>-slevel 10</tt> is one of several options that influence the precision of the value analysis.</span>
</div>
</div>
<div class="notebook code">
<div>
<div class="codeScreen">
<div class="codeTab tab-demo">
<div style="background: #202020; overflow:auto;width:auto;border:solid transparent;">
<pre style="margin: 0; line-height: 125%">
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">S=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">T[</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">];</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #447fcf">main</span>
<span style="color: #d0d0d0">(</span>
<span style="color: #6ab825; font-weight: bold">void</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span class="highlight">int i;</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*p</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">&T[</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">]</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">for</span>
<span style="color: #d0d0d0">(i=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #d0d0d0">i<</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #d0d0d0">i++)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #d0d0d0">S</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">S+i;</span>
<span style="color: #d0d0d0">*p++</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #6ab825; font-weight: bold">return</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">
<span class="arrowTooltip left">
<span>
<span class="title">
<b>01</b>
<span>This command-line creates an analysis project for file
<samp>first.c</samp>.</span>
</span>
</span>
</span>frama-c-gui</span>
<span style="color: #d0d0d0">-slevel</span>
<span style="color: #3677a9">10
<span class="tooltip">3</span></span>
<span style="color: #d0d0d0">-val
<span class="tooltip">2</span>
<span style="color: #d0d0d0">first.c
<span class="tooltip">1</span>
<span class="arrowTooltip right">
<span>
<span class="title">
<b>02</b>
<span>Option
<samp>-val</samp> runs the Evolved Value Analysis plug-in and prepares its results.</span>
</span>
</span>
</span></span>
</span>
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="swiper-slide">
<div class="codeTips">
<div class="title">
<b>01</b>
<span>The Evolved Value Analysis (EVA) plug-in computes sets of possible values for every variable at
each point of the program.</span>
</div>
<div class="title">
<b>02</b>
<span>When the execution reaches the highlighted point inside the loop, the variable
<samp>S</samp> always contains either 0, 1, 3, or 6. Frama-C guarantees that it does not take any other
values at that point.</span>
</div>
</div>
<div class="notebook code">
<div>
<div class="codeScreen">
<div class="codeTab tab-demo">
<div style="background: #202020; overflow:auto;width:auto;border:solid transparent;">
<pre style="margin: 0; line-height: 125%">
<span style="color: #d0d0d0">i</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">while</span>
<span style="color: #d0d0d0">(i</span>
<span style="color: #d0d0d0"><</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*tmp;</span>
<span class="arrowTooltip left">
<span>
<span class="title">
<b>01</b>
<span>The Evolved Value Analysis (EVA) plug-in computes sets of possible values for every variable at each point of the
program.</span>
</span>
</span>
</span>
<span style="color: #d0d0d0">
<span class="highlight">S
<span class="tooltip">1</span></span>
</span>
<span style="color: #d0d0d0">+=</span>
<span style="color: #d0d0d0">i;</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #999999; font-style: italic">/* sequence */</span>
<span style="color: #d0d0d0">tmp</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">p;</span>
<span style="color: #d0d0d0">p</span>
<span style="color: #d0d0d0">++;</span>
<span style="color: #d0d0d0">*tmp</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">i++;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #6ab825; font-weight: bold">return</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">S</span>
<span style="color: #a61717; background-color: #e3d2d2">∈</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">1</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">3</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">6</span>
<span style="color: #d0d0d0">}</span>
<span class="tooltip">2</span>
<span class="arrowTooltip right">
<span>
<span class="title">
<b>02</b>
<span>When the execution reaches the highlighted point inside the loop, the variable
<samp>S</samp> always contains either 0, 1, 3, or 6. Frama-C guarantees that it does not take any other values at that
point.</span>
</span>
</span>
</span>
<span style="color: #d0d0d0">S</span>
<span style="color: #d0d0d0">(after)</span>
<span style="color: #a61717; background-color: #e3d2d2">∈</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">1</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">3</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">6</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #3677a9">10</span>
<span style="color: #d0d0d0">}</span>
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="swiper-slide">
<div class="codeTips">
<div class="title">
<b>01</b>
<span>For each statement, Frama-C can provide an exhaustive list of the memory cells that may be modified
by this statement during the execution, even if the statement uses pointers.</span>
</div>
<div class="title">
<b>02</b>
<span>Frama-C guarantees that anytime it is executed, the statement
<samp>*tmp = S;</samp> does not change any memory location other than the cells of the array
<samp>T</samp>.</span>
</div>
</div>
<div class="notebook code">
<div>
<div class="codeScreen">
<div class="codeTab tab-demo">
<div style="background: #202020; overflow:auto;width:auto;border:solid transparent;">
<pre style="margin: 0; line-height: 125%">
<span style="color: #d0d0d0">p</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">T;</span>
<span style="color: #d0d0d0">i</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">while</span>
<span style="color: #d0d0d0">(i</span>
<span style="color: #d0d0d0"><</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*tmp;</span>
<span style="color: #d0d0d0">S</span>
<span style="color: #d0d0d0">+=</span>
<span style="color: #d0d0d0">i;</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #999999; font-style: italic">/* sequence */</span>
<span style="color: #d0d0d0">tmp</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">p;</span>
<span style="color: #d0d0d0">p</span>
<span style="color: #d0d0d0">++;</span>
<span class="arrowTooltip left">
<span>
<span class="title">
<b>01</b>
<span>For each statement, Frama-C can provide an exhaustive list of the memory cells that may be modified by this statement
during the execution, even if the statement uses pointers.</span>
</span>
</span>
</span>
<span class="highlight">*tmp = S;
<span class="tooltip">1</span></span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">i++;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #6ab825; font-weight: bold">return</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
<span class="highlight">*tmp = S;</span>
<span style="color: #d0d0d0">modifies</span>
<span style="color: #d0d0d0">T[</span>
<span style="color: #3677a9">0..4</span>
<span style="color: #d0d0d0">]</span>
<span class="arrowTooltip right">
<span>
<span class="title">
<b>02</b>
<span>Frama-C guarantees that anytime it is executed, the statement
<samp>*tmp = S;</samp> does not change any memory location other than the cells of the array
<samp>T</samp>.</span>
</span>
</span>
</span>
<span class="tooltip">2</span>
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="swiper-slide">
<div class="codeTips">
<div class="title">
<b>01</b>
<span>The dependencies plug-in highlights the statements that define the value of variable
<samp>S</samp> at this point.</span>
</div>
<div class="title">
<b>02</b>
<span>The value contained in variable
<samp>S</samp> at the statement
<samp>*tmp = S;</samp> was defined by the statement
<samp>S += i;</samp></span>
</div>
</div>
<div class="notebook code">
<div>
<div class="codeScreen">
<div class="codeTab tab-demo">
<div style="background: #202020; overflow:auto;width:auto;border:solid transparent;">
<pre style="margin: 0; line-height: 125%">
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #447fcf">main</span>
<span style="color: #d0d0d0">(</span>
<span style="color: #6ab825; font-weight: bold">void</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">i;</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*p;</span>
<span style="color: #d0d0d0">p</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">T;</span>
<span style="color: #d0d0d0">i</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">while</span>
<span style="color: #d0d0d0">(i</span>
<span style="color: #d0d0d0"><</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*tmp;</span>
<span class="highlight2">S += i;</span>
<span class="tooltip">2</span>
<span class="arrowTooltip right">
<span>
<span class="title">
<b>02</b>
<span>The value contained in variable
<samp>S</samp> at the statement
<samp>*tmp = S;</samp> was defined by the statement
<samp>S += i;</samp></span>
</span>
</span>
</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #999999; font-style: italic">/* sequence */</span>
<span style="color: #d0d0d0">tmp</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #d0d0d0">p;</span>
<span style="color: #d0d0d0">p</span>
<span style="color: #d0d0d0">++;</span>
<span class="arrowTooltip left">
<span>
<span class="title">
<b>01</b>
<span>The dependencies plug-in highlights the statements that define the value of variable
<samp>S</samp> at this point.</span>
</span>
</span>
</span>
<span style="color: #d0d0d0">*tmp</span>
<span style="color: #d0d0d0">=</span>
<span class="highlight">S
<span class="tooltip">1</span></span>
<span style="color: #d0d0d0">;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">i++;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #6ab825; font-weight: bold">return</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="swiper-slide">
<div class="codeTips">
<div class="title">
<b>01</b>
<span>This analysis highlights all the statements impacted by the selected statement.</span>
</div>
<div class="title">
<b>02</b>
<span>This statement has repercussions on the statements
<samp>tmp = p; p++; *tmp = S;</samp>. It is guaranteed not to affect the statements
<samp>S += i;</samp> and
<samp>i ++;</samp></span>
</div>
</div>
<div class="notebook code">
<div>
<div class="codeScreen">
<div class="codeTab tab-demo">
<div style="background: #202020; overflow:auto;width:auto;border:solid transparent;">
<pre style="margin: 0; line-height: 125%">
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #447fcf">main</span>
<span style="color: #d0d0d0">(</span>
<span style="color: #6ab825; font-weight: bold">void</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">i;</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*p;</span>
<span class="arrowTooltip left">
<span>
<span class="title">
<b>01</b>
<span>This analysis highlights all the statements impacted by the selected statement.</span>
</span>
</span>
</span>
<span class="highlight">p = T;</span>
<span class="tooltip">1</span>
<span style="color: #d0d0d0">i</span>
<span style="color: #d0d0d0">=</span>
<span style="color: #3677a9">0</span>
<span style="color: #d0d0d0">;</span>
<span style="color: #6ab825; font-weight: bold">while</span>
<span style="color: #d0d0d0">(i</span>
<span style="color: #d0d0d0"><</span>
<span style="color: #3677a9">5</span>
<span style="color: #d0d0d0">)</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #6ab825; font-weight: bold">int</span>
<span style="color: #d0d0d0">*tmp;</span>
<span style="color: #d0d0d0">S</span>
<span style="color: #d0d0d0">+=</span>
<span style="color: #d0d0d0">i;</span>
<span style="color: #d0d0d0">{</span>
<span style="color: #999999; font-style: italic">/* sequence */</span>
<span class="highlight2">tmp = p;</span>
<span class="highlight2">p++;</span>
<span class="highlight2">*tmp = S;</span>
<span class="tooltip">2</span>
<span class="arrowTooltip right">
<span>
<span class="title">
<b>02</b>
<span>This statement has repercussions on the statements
<samp>tmp = p; p++; *tmp = S;</samp>. It is guaranteed not to affect the statements
<samp>S += i;</samp> and
<samp>i ++;</samp></span>
</span>
</span>
</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #d0d0d0">i++;</span>
<span style="color: #d0d0d0">}</span>
<span style="color: #6ab825; font-weight: bold">return</span>
<span style="color: #d0d0d0">S;</span>
<span style="color: #d0d0d0">}</span>
</pre>
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<h2>How can
<br />Frama-C
<br />be used?</h2>
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<span class="txt">Test your software's
<b>robustness</b></span></a>
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<span class="txt">Enforce
<b>code requirements</b></span></a>
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<h3>The first version of the Frama C Plugins</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et
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<h3>of letters, as opposed to using of letters, as opposed to using</h3>
<p>It is a long established fact that a reader will be distracted by the readable content of a page when
looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed...</p>
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<h3>of letters, as opposed to using</h3>
<p>It is a long established fact that a reader will be distracted by the readable content of a page when
looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution
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<h3>frama-clang 0.0.3, compatible with Frama-C 15 is out.</h3>
<p>Frama-Clang is a plugin that allows Frama-C to take as input C++ programs. As its name implies, it is
based on the clang compiler, the C/C++/Objective-C front-end of the llvm platform. Changes Compatibility
with Frama-C 15 Phosphorus Improved handling of constructors and...</p>
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<b>Aug</b>
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<h3>The First Version Of the frama-clang plugin</h3>
<p>The first version of the Frama-Clang plugin, an experimental C++ front-end for Frama-C, is available.
The first version of the Frama-Clang plugin, an experimental C++ front-end for Frama-C, is available.
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<h3>Lorem Ipsum</h3>
<p>It is a long established fact that a reader will be distracted by the readable content of a page when
looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed...</p>
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<p>It is a long established fact that a reader will be distracted by the readable content of a page when
looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution
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