{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/60","labels_url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/60/labels{/name}","comments_url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/60/comments","events_url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/60/events","html_url":"https://github.com/JuliaOpt/CPLEX.jl/issues/60","id":121572172,"number":60,"title":"Presolve issue for SOCPs","user":{"login":"harshangrjn","id":8387070,"avatar_url":"https://avatars.githubusercontent.com/u/8387070?v=3","gravatar_id":"","url":"https://api.github.com/users/harshangrjn","html_url":"https://github.com/harshangrjn","followers_url":"https://api.github.com/users/harshangrjn/followers","following_url":"https://api.github.com/users/harshangrjn/following{/other_user}","gists_url":"https://api.github.com/users/harshangrjn/gists{/gist_id}","starred_url":"https://api.github.com/users/harshangrjn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/harshangrjn/subscriptions","organizations_url":"https://api.github.com/users/harshangrjn/orgs","repos_url":"https://api.github.com/users/harshangrjn/repos","events_url":"https://api.github.com/users/harshangrjn/events{/privacy}","received_events_url":"https://api.github.com/users/harshangrjn/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-12-10T20:38:01Z","updated_at":"2015-12-10T22:30:51Z","closed_at":null,"body":"I have a SOCP problem (@mlubin : ACOPF with SOC relaxations), which gives different objective values when I have the following model options without any other modifications: \r\na. With CPX_PARAM_PREIND=0\r\nOpt obj: 721341.0797\r\n\r\nb. Without CPX_PARAM_PREIND=0\r\nOpt obj: 721299.7785\r\n\r\nWhen I solve SOCP with outer approximation using callback, I still get opt obj = 721341.0797. Looks like there is an issue with having presolve switched on. \r\n\r\nI am on Julia 0.4 and have updated the packages. Would this be an issue on CPLEX.jl/JuMP.jl or in CPLEX itself?"},"comment":{"url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/comments/163770040","html_url":"https://github.com/JuliaOpt/CPLEX.jl/issues/60#issuecomment-163770040","issue_url":"https://api.github.com/repos/JuliaOpt/CPLEX.jl/issues/60","id":163770040,"user":{"login":"joehuchette","id":1373010,"avatar_url":"https://avatars.githubusercontent.com/u/1373010?v=3","gravatar_id":"","url":"https://api.github.com/users/joehuchette","html_url":"https://github.com/joehuchette","followers_url":"https://api.github.com/users/joehuchette/followers","following_url":"https://api.github.com/users/joehuchette/following{/other_user}","gists_url":"https://api.github.com/users/joehuchette/gists{/gist_id}","starred_url":"https://api.github.com/users/joehuchette/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/joehuchette/subscriptions","organizations_url":"https://api.github.com/users/joehuchette/orgs","repos_url":"https://api.github.com/users/joehuchette/repos","events_url":"https://api.github.com/users/joehuchette/events{/privacy}","received_events_url":"https://api.github.com/users/joehuchette/received_events","type":"User","site_admin":false},"created_at":"2015-12-10T22:30:51Z","updated_at":"2015-12-10T22:30:51Z","body":"Yeah, but not SOC constraints AFAICT"}}