Fix inifnity constants in VeriPB interface

[chrjabs]

The float constant INFINITY cannot be converted to the Rational type, which leads to a runtime error when attempting to compare coefficients with INFINITY, as seen below. The instance used is available in the RoundingSAT repository.

❯ ./papilo presolve -a r -p ../../settings/verification.set -f ~/Git/roundingsat/test/instances/opb/opt/air01.opb
PaPILO version 2.2.2 [mode: debug][Solvers: none][GitHash: 053ce67f]
Copyright (C) 2020-2023 Zuse Institute Berlin (ZIB)

External libraries:
  Boost    1.83.0    (https://www.boost.org/)
  TBB                Thread building block https://github.com/oneapi-src/oneTBB developed by Intel
  GMP      6.3.0     GNU Multiple Precision Arithmetic Library developed by T. Granlund (gmplib.org)

reading took 0.0313 seconds
Numerical Statistics:
 Matrix range    [1e+00,1e+00]
 Objective range [1e+02,7e+03]
 Bounds range    [1e+00,1e+00]
 RHS range       [1e+00,1e+00]
 Dynamism Variables: 1e+00
 Dynamism Rows     : 1e+00
set verification_with_VeriPB = 1

starting presolve of problem /home/christoph/Git/roundingsat/test/instances/opb/opt/air01.opb with dual-postsolve de-activated
  rows:     23
  columns:  771
  int. columns:  771
  cont. columns:  0
  nonzeros: 4215

round 0   ( Trivial  ):    0 del cols,    0 del rows,    0 chg bounds,    0 chg sides,    0 chg coeffs,    0 tsx applied,    0 tsx conflicts
[1]    546276 floating point exception (core dumped)  ./papilo presolve -a r -p ../../settings/verification.set -f

[alexhoen]

Thanks for the fix. I copied it to our Internal repo ans merged it there. Should be displayed soonish!

[alexhoen]

The assertion fail on this instance while certifying with rational arithmetic should be resolved already. We are running some tests to exclude further errors. Thanks for reporting this.