April 2009 - PPL-devel - BUGSENG Mailman

[GIT] ppl/ppl(ppl-0_10-branch): Acknowledge the contribution of INRIA.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: ppl-0_10-branch Commit: 11e028c0bff9d5060fde44011e47eb70c8006266 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=11e028c0bff9… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Thu Apr 9 20:59:40 2009 +0200 Acknowledge the contribution of INRIA. --- CREDITS | 32 +++++++++++++++++++------------- 1 files changed, 19 insertions(+), 13 deletions(-) diff --git a/CREDITS b/CREDITS index 18b7453..1771859 100644 --- a/CREDITS +++ b/CREDITS @@ -292,6 +292,10 @@ We are grateful for the following contributions: architectures. Many thanks to Thibaut Varene [50] and the PA-RISC Linux community [51] for their kind assistance. +- INRIA [52] is supporting Abramo Bagnara from January 1st to May 31st, + 2009, to work on the PPL and its development infrastructure. + Many thanks go, in particular, to Albert Cohen [53]. + Some of our research work has been partly supported by the following projects and organizations: @@ -300,31 +304,31 @@ projects and organizations: ``Pure and Applied Mathematics''; - MURST project ``Automatic Program Certification by Abstract - Interpretation'' [52]; + Interpretation'' [54]; - MURST project ``Abstract Interpretation, Type Systems and Control-Flow Analysis''; - MURST project ``Automatic Aggregate- and Number-Reasoning for Computing: from Decision Algorithms to Constraint Programming with Multisets, Sets, - and Maps'' [53]; + and Maps'' [55]; -- MURST project ``Constraint Based Verification of Reactive Systems'' [54]; +- MURST project ``Constraint Based Verification of Reactive Systems'' [56]; - MURST project ``AIDA - Abstract Interpretation: Design and - Applications'' [55]; + Applications'' [57]; - Royal Society Joint project 2004/R1-EU (UK-Italy) ``Automatic Detection of Unstable Numerical Computations''; - EPSRC (UK) project EP/C520726/1 - ``Numerical Domains for Software Analysis'' [56]; + ``Numerical Domains for Software Analysis'' [58]; - Royal Society International Outgoing Short Visit 2007/R4 - ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [57]; + ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [59]; - EPSRC (UK) project EP/G025177/1 - ``Geometric Abstractions for Scalable Program Analyzers'' [57]. + ``Geometric Abstractions for Scalable Program Analyzers'' [59]. -------- @@ -379,9 +383,11 @@ projects and organizations: [49] http://www.esiee.fr/ [50] http://www.parisc-linux.org/~varenet/ [51] http://www.parisc-linux.org/ -[52] http://theory.sci.univr.it/p40/ -[53] http://www.cs.unipr.it/Projects/COFIN01 -[54] http://www.disi.unige.it/person/DelzannoG/cover/ -[55] http://www.cs.unipr.it/Projects/AIDA/ -[56] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html -[57] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html +[52] http://www.inria.fr/ +[53] http://www-rocq.inria.fr/~acohen/ +[54] http://theory.sci.univr.it/p40/ +[55] http://www.cs.unipr.it/Projects/COFIN01 +[56] http://www.disi.unige.it/person/DelzannoG/cover/ +[57] http://www.cs.unipr.it/Projects/AIDA/ +[58] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html +[59] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html

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[GIT] ppl/ppl(ppl-0_10-branch): Acknowledge the contribution of AMD. Fixed mistaked of previous commit.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: ppl-0_10-branch Commit: 96604f4f9f42cee268d6ef6c9635e6c7f3f9940c URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=96604f4f9f42… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Thu Apr 9 19:10:05 2009 +0200 Acknowledge the contribution of AMD. Fixed mistaked of previous commit. --- CREDITS | 63 +++++++++++++++++++++++++++++++++++---------------------------- 1 files changed, 35 insertions(+), 28 deletions(-) diff --git a/CREDITS b/CREDITS index fdfe9cd..18b7453 100644 --- a/CREDITS +++ b/CREDITS @@ -273,19 +273,24 @@ Organizations (and People Therein): We are grateful for the following contributions: -- The Computing Center of the University of Parma [46] allowed us to test - the portability of the library on a variety of platforms. Fausto - Pagani was especially helpful in this respect. - -- The GCC Compile Farm Project [47] managed by FSF France provided access - to a number of machines that allowed us to test and improve the - portability of the library. Special thanks go to Laurent Guerby +- AMD Developer Central [46] has donated a bi-quad core machine with + the latest AMD Opteron 2384 "Shanghai" processors and 16GB of RAM. + This machine now hosts all the PPL data and services. Many thanks + to Christophe Harle and Sebastian Pop. + +- The Computing Center of the University of Parma [47] allowed us to + test the portability of the library on a variety of platforms. + Fausto Pagani was especially helpful in this respect. + +- The GCC Compile Farm Project [48] managed by FSF France provided + access to a number of machines that allowed us to test and improve + the portability of the library. Special thanks go to Laurent Guerby for his kind assistance. -- The test cluster provided by Hewlett Packard and hosted by ESIEE [48] +- The test cluster provided by Hewlett Packard and hosted by ESIEE [49] allowed us to complete the porting of the PPL to the IA64 and PA-RISC - architectures. Many thanks to Thibaut Varene [49] and the PA-RISC - Linux community [50] for their kind assistance. + architectures. Many thanks to Thibaut Varene [50] and the PA-RISC + Linux community [51] for their kind assistance. Some of our research work has been partly supported by the following @@ -295,31 +300,31 @@ projects and organizations: ``Pure and Applied Mathematics''; - MURST project ``Automatic Program Certification by Abstract - Interpretation'' [51]; + Interpretation'' [52]; - MURST project ``Abstract Interpretation, Type Systems and Control-Flow Analysis''; - MURST project ``Automatic Aggregate- and Number-Reasoning for Computing: from Decision Algorithms to Constraint Programming with Multisets, Sets, - and Maps'' [52]; + and Maps'' [53]; -- MURST project ``Constraint Based Verification of Reactive Systems'' [53]; +- MURST project ``Constraint Based Verification of Reactive Systems'' [54]; - MURST project ``AIDA - Abstract Interpretation: Design and - Applications'' [54]; + Applications'' [55]; - Royal Society Joint project 2004/R1-EU (UK-Italy) ``Automatic Detection of Unstable Numerical Computations''; - EPSRC (UK) project EP/C520726/1 - ``Numerical Domains for Software Analysis'' [55]; + ``Numerical Domains for Software Analysis'' [56]; - Royal Society International Outgoing Short Visit 2007/R4 - ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [56]; + ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [57]; - EPSRC (UK) project EP/G025177/1 - ``Geometric Abstractions for Scalable Program Analyzers'' [56]. + ``Geometric Abstractions for Scalable Program Analyzers'' [57]. -------- @@ -347,6 +352,7 @@ projects and organizations: [22] http://www.cs.unipr.it/ppl/Documentation/chernikova.c [23] http://www.cs.unipr.it/ppl/Documentation/bibliography#LeVerge92 [24] http://research.microsoft.com/~logozzo/ +[25] http://homepages.inf.ed.ac.uk/kwxm/ [26] http://www.math.unipr.it/~medori/ [27] http://www.univ-reunion.fr/~fred/ [28] http://www.cs.unipr.it/cTI/ @@ -367,14 +373,15 @@ projects and organizations: [43] http://www.ncc.up.pt/~pbv/cgi/cost.cgi [44] http://www.ncc.up.pt/~pbv/research/ppl/ghc.html [45] http://wissrech.ins.uni-bonn.de/people/wildenhues.html -[46] http://www.siti.unipr.it/ -[47] http://gcc.gnu.org/wiki/CompileFarm -[48] http://www.esiee.fr/ -[49] http://www.parisc-linux.org/~varenet/ -[50] http://www.parisc-linux.org/ -[51] http://theory.sci.univr.it/p40/ -[52] http://www.cs.unipr.it/Projects/COFIN01 -[53] http://www.disi.unige.it/person/DelzannoG/cover/ -[54] http://www.cs.unipr.it/Projects/AIDA/ -[55] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html -[56] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html +[46] http://developer.amd.com/ +[47] http://www.siti.unipr.it/ +[48] http://gcc.gnu.org/wiki/CompileFarm +[49] http://www.esiee.fr/ +[50] http://www.parisc-linux.org/~varenet/ +[51] http://www.parisc-linux.org/ +[52] http://theory.sci.univr.it/p40/ +[53] http://www.cs.unipr.it/Projects/COFIN01 +[54] http://www.disi.unige.it/person/DelzannoG/cover/ +[55] http://www.cs.unipr.it/Projects/AIDA/ +[56] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html +[57] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html

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[GIT] ppl/ppl(ppl-0_10-branch): Acknowledge the contribution of Kenneth MacKenzie.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: ppl-0_10-branch Commit: f7b0e03047aaed1baadf9582b6f6e9ddada4a515 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=f7b0e03047aa… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Thu Apr 9 18:28:11 2009 +0200 Acknowledge the contribution of Kenneth MacKenzie. --- CREDITS | 129 ++++++++++++++++++++++++++++++++------------------------------- 1 files changed, 66 insertions(+), 63 deletions(-) Diff: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commitdiff;h=f7b0e030…

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[GIT] ppl/ppl(ppl-0_10-branch): Disabled test07() on the Alpha.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: ppl-0_10-branch Commit: 11f285e07ccecfd5cb7ba99745b056b842bebe00 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=11f285e07cce… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Tue Apr 7 06:04:44 2009 +0000 Disabled test07() on the Alpha. --- tests/Octagonal_Shape/unconstrain1.cc | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/tests/Octagonal_Shape/unconstrain1.cc b/tests/Octagonal_Shape/unconstrain1.cc index e5b8bf3..da6ea1d 100644 --- a/tests/Octagonal_Shape/unconstrain1.cc +++ b/tests/Octagonal_Shape/unconstrain1.cc @@ -222,7 +222,10 @@ BEGIN_MAIN DO_TEST(test04); DO_TEST(test05); DO_TEST(test06); +#ifndef __alpha__ + // Exception handling is broken in GCC on the Alpha. DO_TEST(test07); +#endif DO_TEST(test08); DO_TEST(test09); END_MAIN

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[GIT] ppl/ppl(master): Updated.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: master Commit: 8e9f007fa2a5491ee1810e83fc24a6daa2829516 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=8e9f007fa2a5… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Fri Apr 10 22:32:54 2009 +0200 Updated. --- ChangeLog | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/ChangeLog b/ChangeLog index 2c4f321..330536d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,54 @@ +2009-04-10 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * src/checked_float.inlines.hh: Only use fmaf(), fma() and fmal() if + they are fast. + +2009-04-10 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * configure.ac: Version number bumped. + +2009-04-10 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * src/checked_float.inlines.hh: Do not use fma(), fmaf() and fmal() + on FreeBSD. fma() does not respect rounding, fmaf() and fmal() may + have the same problem. + +2009-04-09 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * CREDITS: Mentioned the AIDA 2007 project. + +2009-04-09 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * CREDITS: Acknowledge the contribution of HiPEAC. + +2009-04-09 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * CREDITS: Acknowledge the contribution of INRIA. + +2009-04-09 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * CREDITS: Acknowledge the contribution of AMD. Fixed mistaked of + previous commit. + +2009-04-09 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * CREDITS: Acknowledge the contribution of Kenneth MacKenzie. + +2009-04-07 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * tests/Octagonal_Shape/unconstrain1.cc: Disabled test07() on the + Alpha. + +2009-04-06 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * ChangeLog, Watchdog/ChangeLog: Updated. + +2009-04-06 Roberto Bagnara <bagnara(a)cs.unipr.it> + + * devtools/cvs2cl.pl, devtools/git2cl, devtools/update_ChangeLog: + Machinery to generate ChangeLog adapted to Git. This is still + highly unsatisfactory, as it requires manual intervention. + 2009-04-06 Roberto Bagnara <bagnara(a)cs.unipr.it> * configure.ac: Version number bumped.

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[GIT] ppl/ppl(master): Only use fmaf(), fma() and fmal() if they are fast.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: master Commit: 753671e93149e0d82aef0afcd6279e78711f2cfe URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=753671e93149… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Fri Apr 10 22:24:18 2009 +0200 Only use fmaf(), fma() and fmal() if they are fast. --- src/checked_float.inlines.hh | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/src/checked_float.inlines.hh b/src/checked_float.inlines.hh index 828ef0e..6783260 100644 --- a/src/checked_float.inlines.hh +++ b/src/checked_float.inlines.hh @@ -34,7 +34,8 @@ namespace Checked { inline float fma(float x, float y, float z) { -#if PPL_HAVE_DECL_FMAF && !defined(__alpha) && !defined(__FreeBSD__) +#if PPL_HAVE_DECL_FMAF && defined(FP_FAST_FMAF) \ + && !defined(__alpha) && !defined(__FreeBSD__) return ::fmaf(x, y, z); #else return x*y + z; @@ -43,7 +44,8 @@ fma(float x, float y, float z) { inline double fma(double x, double y, double z) { -#if PPL_HAVE_DECL_FMA && !defined(__alpha) && !defined(__FreeBSD__) +#if PPL_HAVE_DECL_FMA && defined(FP_FAST_FMA) \ + && !defined(__alpha) && !defined(__FreeBSD__) return ::fma(x, y, z); #else return x*y + z; @@ -52,7 +54,8 @@ fma(double x, double y, double z) { inline long double fma(long double x, long double y, long double z) { -#if PPL_HAVE_DECL_FMAL && !defined(__alpha) && !defined(__FreeBSD__) +#if PPL_HAVE_DECL_FMAL && defined(FP_FAST_FMAL) \ + && !defined(__alpha) && !defined(__FreeBSD__) return ::fmal(x, y, z); #else return x*y + z;

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[GIT] ppl/ppl(master): Version number bumped.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: master Commit: c75c07f7c12f89fa9c7c408e4ac946ea46f8e9f9 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=c75c07f7c12f… Author: Roberto Bagnara <roberto(a)freebsd.homenet.telecomitalia.it> Date: Fri Apr 10 21:33:33 2009 +0200 Version number bumped. --- configure.ac | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/configure.ac b/configure.ac index 53c0ac1..eab19fc 100644 --- a/configure.ac +++ b/configure.ac @@ -23,7 +23,7 @@ # Process this file with Autoconf to produce a configure script. # Every other copy of the package version number gets its value from here. -AC_INIT([the Parma Polyhedra Library],[0.10.1pre12],[ppl-devel(a)cs.unipr.it],[ppl]) +AC_INIT([the Parma Polyhedra Library],[0.10.1pre13],[ppl-devel(a)cs.unipr.it],[ppl]) # Minimum Autoconf version required. AC_PREREQ(2.61)

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[GIT] ppl/ppl(master): Do not use fma(), fmaf() and fmal() on FreeBSD.
by Roberto Bagnara 10 Apr '09

10 Apr '09

Module: ppl/ppl Branch: master Commit: b6a0450ea6bdef2e4aaac3184f0ff42045eb5781 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=b6a0450ea6bd… Author: Roberto Bagnara <roberto(a)freebsd.homenet.telecomitalia.it> Date: Fri Apr 10 21:31:37 2009 +0200 Do not use fma(), fmaf() and fmal() on FreeBSD. fma() does not respect rounding, fmaf() and fmal() may have the same problem. --- src/checked_float.inlines.hh | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/src/checked_float.inlines.hh b/src/checked_float.inlines.hh index 16f891f..828ef0e 100644 --- a/src/checked_float.inlines.hh +++ b/src/checked_float.inlines.hh @@ -34,7 +34,7 @@ namespace Checked { inline float fma(float x, float y, float z) { -#if PPL_HAVE_DECL_FMAF && !defined(__alpha) +#if PPL_HAVE_DECL_FMAF && !defined(__alpha) && !defined(__FreeBSD__) return ::fmaf(x, y, z); #else return x*y + z; @@ -43,7 +43,7 @@ fma(float x, float y, float z) { inline double fma(double x, double y, double z) { -#if PPL_HAVE_DECL_FMA && !defined(__alpha) +#if PPL_HAVE_DECL_FMA && !defined(__alpha) && !defined(__FreeBSD__) return ::fma(x, y, z); #else return x*y + z; @@ -52,7 +52,7 @@ fma(double x, double y, double z) { inline long double fma(long double x, long double y, long double z) { -#if PPL_HAVE_DECL_FMAL && !defined(__alpha) +#if PPL_HAVE_DECL_FMAL && !defined(__alpha) && !defined(__FreeBSD__) return ::fmal(x, y, z); #else return x*y + z;

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[GIT] ppl/w3ppl(master): Mentioned the AIDA 2007 project.
by Roberto Bagnara 09 Apr '09

09 Apr '09

Module: ppl/w3ppl Branch: master Commit: 46b65b88dd21a8cc96edce734fea866ebe45a6d2 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/w3ppl.git;a=commit;h=46b65b88dd… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Thu Apr 9 21:41:38 2009 +0200 Mentioned the AIDA 2007 project. --- htdocs/Credits/Credits.raw | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/htdocs/Credits/Credits.raw b/htdocs/Credits/Credits.raw index eee0211..1994a42 100644 --- a/htdocs/Credits/Credits.raw +++ b/htdocs/Credits/Credits.raw @@ -491,7 +491,12 @@ projects and organizations: </LI> <LI> MURST project - ``<A HREF="http://www.cs.unipr.it/Projects/AIDA">AIDA + ``<A HREF="http://www.cs.unipr.it/Projects/AIDA/">AIDA + - Abstract Interpretation: Design and Applications</A>''. + </LI> + <LI> + PRIN project + ``<A HREF="http://www.cs.unipr.it/Projects/AIDA2007/">AIDA 2007 - Abstract Interpretation: Design and Applications</A>''. </LI> <LI>

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[GIT] ppl/ppl(master): Mentioned the AIDA 2007 project.
by Roberto Bagnara 09 Apr '09

09 Apr '09

Module: ppl/ppl Branch: master Commit: a786a3fa3e3f0d6b0522dd9dbe16c4a2066faac6 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=a786a3fa3e3f… Author: Roberto Bagnara <bagnara(a)cs.unipr.it> Date: Thu Apr 9 21:41:10 2009 +0200 Mentioned the AIDA 2007 project. --- CREDITS | 16 ++++++++++------ 1 files changed, 10 insertions(+), 6 deletions(-) diff --git a/CREDITS b/CREDITS index 5004e43..7316d9b 100644 --- a/CREDITS +++ b/CREDITS @@ -293,7 +293,7 @@ We are grateful for the following contributions: Linux community [51] for their kind assistance. - HiPEAC [52] sponsored the participation of Roberto Bagnara to the - Graphite Workshop [53. This was very helpful to discuss the needs + Graphite Workshop [53]. This was very helpful to discuss the needs of Graphite [54] (a framework for high-level loop optimizations on the polyhedral model) and, more generally, of GCC [55] in terms of numerical abstractions and how the PPL can help. Special thanks go @@ -325,17 +325,20 @@ projects and organizations: - MURST project ``AIDA - Abstract Interpretation: Design and Applications'' [61]; +- PRIN project ``AIDA 2007 - Abstract Interpretation: Design and + Applications'' [62]; + - Royal Society Joint project 2004/R1-EU (UK-Italy) ``Automatic Detection of Unstable Numerical Computations''; - EPSRC (UK) project EP/C520726/1 - ``Numerical Domains for Software Analysis'' [62]; + ``Numerical Domains for Software Analysis'' [63]; - Royal Society International Outgoing Short Visit 2007/R4 - ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [63]; + ``Finding and Verifying the Absence of Bugs in Imperative Programs'' [64]; - EPSRC (UK) project EP/G025177/1 - ``Geometric Abstractions for Scalable Program Analyzers'' [63]. + ``Geometric Abstractions for Scalable Program Analyzers'' [64]. -------- @@ -400,5 +403,6 @@ projects and organizations: [59] http://www.cs.unipr.it/Projects/COFIN01 [60] http://www.disi.unige.it/person/DelzannoG/cover/ [61] http://www.cs.unipr.it/Projects/AIDA/ -[62] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html -[63] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html +[62] http://www.cs.unipr.it/Projects/AIDA2007/ +[63] http://www.comp.leeds.ac.uk/hill/chiara/WWW/linda.html +[64] http://www.comp.leeds.ac.uk/hill/chiara/WWW/projects.html

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