[BCP] BM: Couldn't branch!

Heesu Hwang heesuhwang at yahoo.com
Fri Nov 18 14:50:10 EST 2016


 Hi all,
The BCP crashes at branching stage when there is no algo_var generated.
LP: Default test_binary() executed.
LP: Default logical_fixing() executed.
LP:   Row effectiveness: rownum: 91 ineffective: 0
LP:   Number of vars received from VG: 0
LP:   Total number of vars in local pool: 0
LP: Default generate_heuristic_solution() executed.
LP:   In iteration 307 BCP generated 0 cuts , 0 vars before calling branch()
LP: Default display_lp_solution() executed.
  LP : Displaying LP solution (FinalRelaxedSolution) :
  LP : Displaying solution :#### some of the solution varialbes ###
  Algo  var (internal index:    -95                    ) at 0.6667
  Algo  var (internal index:   -109                    ) at 1.0000
  Algo  var (internal index:   -117                    ) at 0.6667
  Algo  var (internal index:   -121                    ) at 0.3333
  Algo  var (internal index:   -124                    ) at 0.6667
  Algo  var (internal index:   -155                    ) at 1.0000
  Algo  var (internal index:   -172                    ) at 0.6667
  Algo  var (internal index:   -174                    ) at 0.3333LP: Default select_branching_candidates() executed.
BM: Couldn't branch!
Aborted
Where should I start to debug this?
Thanks for your help!Heesu Hwang
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