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CREST extension that support non-linear arithmetic
This project forked from heechul/crest-z3
CREST extension that support non-linear arithmetic
Thanks for downloading and trying out CREST. You can get the latest version of CREST, as well as news and announcements at CREST's homepage: http://code.google.com/p/crest. PREPARING A PROGRAM FOR CREST -- To use CREST on a C program, use functions CREST_int, CREST_char, etc., declared in "crest.h", to generate symbolic inputs for your program. For examples, see the programs in test/. For simple, single-file programs, you can use the build script "bin/crestc" to instrument and compile your test program. CREST can be used to instrument multi-file programs, too -- instructions will be added soon. In the meantime, you can take a look at an example, instrumented form of grep-2.2, available at CREST's homepage. Contact [email protected] for details. RUNNING CREST -- CREST is run on an instrumented program as: bin/run_crest PROGRAM NUM_ITERATIONS -STRATEGY Possibly strategies include: dfs, cfg, random, uniform_random, random_input. Some strategies take optional parameters. Example commands to test the "test/uniform_test.c" program: cd test ../bin/crestc uniform_test.c ../bin/run_crest ./uniform_test 10 -dfs This should produce output roughly like: ... [GARBAGE] ... Read 8 branches. Read 13 nodes. Wrote 6 branch edges. Iteration 0 (0s): covered 0 branches [0 reach funs, 0 reach branches]. Iteration 1 (0s): covered 1 branches [1 reach funs, 8 reach branches]. Iteration 2 (0s): covered 3 branches [1 reach funs, 8 reach branches]. Iteration 3 (0s): covered 5 branches [1 reach funs, 8 reach branches]. Iteration 4 (0s): covered 7 branches [1 reach funs, 8 reach branches]. GOAL! Iteration 5 (0s): covered 8 branches [1 reach funs, 8 reach branches]. NOTE: run_crest and crestc currently leave a lot of files lying around, some of which are temporary and some of which must be kept. In particular, "cfg_branches" and "branches" are output by the instrumentation process and are needed to run run_crest, and run_crest produces "coverage", a list of the ID's of all covered branches. SETUP -- CREST depends on Yices, an SMT solver tool and library available at http://yices.csl.sri.com/. To build and run CREST, you must download and install Yices, and change YICES_DIR in src/Makefile to point to Yices location. CREST uses CIL to instrument C programs for testing. A modified distribution of CIL is included in directory cil/. To build CIL, simply run "configure" and "make" in the cil/ directory. Finally, CREST can be built by running "make" in the src/ directory. LICENSE -- CREST is distributed under the revised BSD license. See LICENSE for details. This distribution includes a modified version of CIL, a tool for parsing, analyzing, and transforming C programs. CIL is written by George Necula, Scott McPeak, Wes Weimer, Ben Liblit, and Matt Harren. It is also distributed under the revised BSD license. See cil/LICENSE for details.
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