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dreal/dreal4
Performance hit when adding an "unrelated" variable to optimization problem.

Observation: Adding an unrelated variable+assertion causes ~50ms linear optimization query to no longer terminate. Expected Behavior: I thought dreal_query_FAST.smt2 and dreal_query_SLOW.smt2 would ...
  • kunalsheth
  • Opened 
    on Nov 19, 2024
  • #320

dreal/dreal4
how to view the solver log when using Python API ?

Is there an equivalent to the CLI --verbose argument in the python API ? I wish that the log be printed to stdout when running CheckSatisfiability.
  • pcarbonn
  • 1
  • Opened 
    on Oct 25, 2024
  • #319

dreal/dreal4
For Apple Silicon Macs, use Rosetta to install dreal

dreal4 depends on packages that requires x86 architectures. I m wondering if we can use rosetta to install these packages. Rosetta does support brew. Perhaps folks have tried going down that path and ...
  • keikun555
  • 1
  • Opened 
    on Oct 17, 2024
  • #318

dreal/dreal4
Unable to install Dreal on Ubuntu 24.04

Hi, hope you are doing great!!! I use Ubuntu 24.04 (Noble) and noticed that there are available packages only for Ubuntu 20.04 and 22.04. I tried anyway to download the 22.04 repositories, but could ...
  • michalis07
  • Opened 
    on Oct 13, 2024
  • #317

dreal/dreal4
Proof checker?

I used dReal for a computer-assisted proof of a surprisingly hard recreational geometry problem, first posed over 50 years ago. If you re curious, all the relevant details are in the abstract and introduction ...
  • DustinWehr
  • 5
  • Opened 
    on Aug 5, 2024
  • #316

dreal/dreal4
Boolean `define-fun` functions don't work

On dReal v4.21.06.1: (set-logic QF_NRA) (declare-fun a () Real) (define-fun eqfn ((x Real) (y Real)) Bool (= x y)) (assert (eqfn a 1.0)) (assert (eqfn a 2.0)) (check-sat) (get-model) (exit) returns satisfiable. ...
  • percontation
  • 1
  • Opened 
    on Jul 24, 2024
  • #315

dreal/dreal4
An issue on multiplication by (-1) for Expressions

Hi, I encountered a severe problem when (right) multiplying the dreal expressions with (-1). When I right multiply an expression by dreal.Expression(-1) or simply (-1), it modifies the original expression ...
  • RuikunZhou
  • 2
  • Opened 
    on Jun 17, 2024
  • #314

dreal/dreal4
Install Fail on WSL2

I am trying to install dreal4 on WSL2 (Ubuntu 22), however something goes wrong. img width= 1043 alt= dreal src= https://github.com/dreal/dreal4/assets/57175155/2b1cf7ca-5d40-4bde-892e-770abbd3f278 I seems ...
  • yogurt-shadow
  • 2
  • Opened 
    on Mar 28, 2024
  • #312

dreal/dreal4
Encountered issues with automatic theorem proving using dReal

I want to linearize c=ab using automatic theorem proving. Everything works fine when solving with SMT, but the same way of writing doesn t work for dReal. `from dreal import * a = Variable( a ,Variable.Int) ...
  • cao-jian
  • Opened 
    on Dec 30, 2023
  • #311

dreal/dreal4
How to run dReach from Docker

I am running Docker on windows 10. I have succesfully ran smt2 files using dreal like so docker run --rm -v /c/Users/user:/tmp dreal/dreal3 dReal /tmp/bouncingball.smt2 delta-sat with delta = 0.00100000000000000 ...
  • akaph2p
  • Opened 
    on Oct 20, 2023
  • #310
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