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------ README ------ This package contains PILAT, the Frama-C plugin for generating loop invariant. If you have no clue of what is Frama-C, please visit <http://frama-c.com>. This tool is based on the results of the article "Polynomial invariants by linear algebra", available at <https://arxiv.org/abs/1611.07726>. Please consult file INSTALL for details about the installation procedure of Frama-C. ----- USAGE ----- Pilat is a part of the Frama-C platform, i.e. it is one of its options. To activate it, just type : frama-c your_file.c -pilat This will generate by default the "whole_program_annot.c" file with degree 2 invariants written in ACSL, the specification language used by Frama-C plugins. You can select any degree by using the option -pilat-degree. Most options of the form '-pilat-option-name' and without any parameter have an opposite with the name '-pilat-no-option-name'. Most options of the form '-option-name' and without any parameter have an opposite with the name '-no-option-name'. Options taking a string as argument should preferably be written -option-name="argument". ***** LIST OF AVAILABLE OPTIONS: -pilat when on, generates polynomial invariants for each solvable loop of the program (opposite option is -no-pilat) -pilat-const-name <str> sets the name of the constants used in invariants (default __PILAT__) -pilat-degree <n> sets the maximum degree of the invariants (default : 2) -pilat-ev <n> sets the maximal eigenvalue searched for when using zarith -pilat-optim-epsilon <str> Tolerance of error during optimization (default 0.05) -pilat-optim-iters <n> sets the maximal number of iterations performed during the optimisation (default 10) -pilat-optim-start <n> sets the initial value of k during the optimisation (default 50) -pilat-output <s> specifies generated file name for annotated C code -pilat-prove when on, tries to prove already existing loop invariants (opposite option is -pilat-no-prove) -pilat-vars <x:y:...> specifies which variables will be analyzed. -pilat-z when on, uses zarith library. Recommended if searching for integer relations but depreciated when searching for floating point relations. (set by default, opposite option is -pilat-no-z)