[Ipopt-tickets] [Ipopt] #302: Pyomo or Ipopt issue ?

[Ipopt]

#302: Pyomo or Ipopt issue ?
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Reporter:  maajdl  |      Owner:  ipopt-team
    Type:  defect  |     Status:  new
Priority:  normal  |  Component:  Ipopt
 Version:  3.11    |   Severity:  normal
Keywords:          |
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 Attached is a pickle file of a Pyomo concrete model .

 The Pyomo snippet below will load and solve the model without problem.
 Removing the "option 2" line will lead to an exception.
 Then removing the "option 1" line will remove this exception.
 Maybe that's an ipopt problem?


 {{{
 import sys
 import pickle
 from pyomo.environ import *
 print(sys.getrecursionlimit())
 sys.setrecursionlimit(10000)
 print(sys.getrecursionlimit())
 pickle_in = open("model.pickle","rb")
 mdl = pickle.load(pickle_in)
 solver = SolverFactory("ipopt")
 solver.options["halt_on_ampl_error"] = "yes" # option 1
 solver.options["print_level"] = 1 # option 2
 solver.solve(mdl)
 }}}

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Ticket URL: <https://projects.coin-or.org/Ipopt/ticket/302>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.