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RELEASES.md

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release 1.5 (2024-09-18, build 210)

Features

  • New operation: integer hull [JLR15]

Minor modifications

  • Syntax diff c1 , c2 allowed, in addition to diff c1 c2

release 1.4 (2024-01-09, build 186)

Features

  • New operation: projection onto a variables set

release 1.3 (2023-07-11, build 180)

Features

  • New operation: union over a list of non-necessarily convex constraints

release 1.2 (2019-06-18, build 170)

Features

  • New operation: applies updates to a polyhedron (i.e. replacing their value with a linear combination of variables)
  • New operation: zonepredgu: Given Zn-1 and Zn such that Zn is the successor zone of Zn-1 by guard g-1 and updating variables in Un-1 to some values, given Zn+1 a set of concrete points (valuations) successor of zone Zn by elapsing of a set of variables t, by guard gn, updates Rn, then zonepredgr(Zn-1, gn-1, Un-1, Zn, t, gn, Un, Zn+1) computes the subset of points in Zn that are predecessors of Zn (by updates of Un, guard gn, elapsing of t), and that are direct successors (without time elapsing) of Zn-1 via gn-1 and Un-1. This function can typically used when running a backward analysis in a zone graph of a PTA / PTPN.

release 1.1 (2019-06-04, build 135)

Features

  • New operation to compute the predecessors of a subset of a zone within a source zone (given the set of variables subject to time-elapsing (typically clocks), and the set of variables reset between the two zones); this function is typically useful to reason about parametric zones in parametric timed automata or parametric time Petri nets

release 1.0 (2019-06-03, build 117)

Features

  • Add operation for exhibition of a point in a polyhedron
  • Allow for more than one operation at a time

Options

  • Option -debug becomes -verbose

Output

  • Results are better organized
  • Minor corrections in display (fractions, time)

Internal

  • Renamed most modules
  • Added basic non-regression tests

release 0.3 (2019-01-22, build 55)

Features

  • Add "time past" operation
  • Add non-convex difference

Bug fix

  • Fix bugs in non-convex inclusion and equality checks

Syntax

  • Allows OR, or and || as disjunction symbols

Internal

  • Strip binary (much smaller size)

release 0.2 (2016-03-01, build 34)

Features

  • Add negation ("not") operation
  • Allow disjunctions (using or) in input constraints

Internal

  • Now using _oasis to compile
  • Now PolyOp has a build number
  • Relying entirely on PPL.Pointset_Powerset_NNC_Polyhedron (even when no disjunction is used)

Dissemination

  • Source code on GitHub

release 0.1 (2011-05-30)

First version of PolyOp