[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #165: Command line CBC reports "Optimal solution found", but the solution file reports "Status unknown"

[COIN-OR Branch-and-Cut MIP Solver]

#165: Command line CBC reports "Optimal solution found", but the solution file
reports "Status unknown"
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Reporter:  dindy   |      Owner:  tkr
    Type:  defect  |     Status:  new
Priority:  minor   |  Component:  Cbc
 Version:  2.9.5   |   Keywords:
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 Hello,

 I have a problem where the command line reports "Optimal solution found",
 with a reasonable objective value, but in the solution file "Status
 unknown" is reported. CBC has been compiled with MinGW 4.9.2, and works
 quite well with many other problems. The command line parameters are:

 cbc -import pcbc.lp -solve -solution pcbc.sol -quit

 By using:

 cbc -import pcbc.lp -perturbation off -solve -solution pcbc.sol -quit

 I get rid of some infeasibility warnings, the problem get solved to the
 same exact objective, but the solution file now is correct, so probably it
 is just a minor problem in the output procedure.

 Attached the sample problem.

 Thanks in advance for your attention, and thanks also for the excellent
 work.

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Ticket URL: <https://projects.coin-or.org/Cbc/ticket/165>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.