[Coin-discuss] LP and TM solutions

[Heesu Hwang]

Hello,

Following output is the result of a LP relaxed problem.
Notice that it is a binary solution and that I am using Default
test_binary() to check the feasibility.
LP packs the feasible solution, and TM unpacks it.
However the solution that TM displays is different from what LP packed.

1) Anybody has an idea what is going on in here?

2) Do negative internal indices of Algo var make any trouble?


Thanks,

Heesu Hwang.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

LP: *** Starting iteration 11 ***

LP:   Matrix size: 80 vars x 31 cuts
LP:   Solution value: -1002851.9760 / 2 , 4
 LP: Default display_lp_solution() executed.
  LP : Displaying LP solution (RelaxedSolution) :
 LP: Default display_lp_solution() executed.
   LP : Displaying solution :
  Algo  var (internal index:      5                    ) at 1.0000
  Algo  var (internal index:     16                    ) at 1.0000
  Algo  var (internal index:     33                    ) at 1.0000
  Algo  var (internal index:     45                    ) at 1.0000
  Algo  var (internal index:     48                    ) at 1.0000
  Algo  var (internal index:     49                    ) at 1.0000
  Algo  var (internal index:     50                    ) at 1.0000
  Algo  var (internal index:     51                    ) at 1.0000
  Algo  var (internal index:     57                    ) at 1.0000
  Algo  var (internal index:    152                    ) at 1.0000
  Algo  var (internal index:   1431                    ) at 1.0000
  Algo  var (internal index:  -7060                    ) at 1.0000

 LP: Default test_binary() executed.
 LP: Default pack_feasible_solution() executed.
 TM: Default unpack_feasible_solution() executed.
TM: Solution found at 516.580 sec.
TM: Solution value: -959109.456000 (best solution value so far:
-1061466.200000)