Goal:
  
  G : t
  s0 : VSet.t
  s' : VSet.t
  x : V.t
  y : V.t
  z : V.t
  d : DisjointAdd x s0 s'
  e : EdgeOf x y
  p : SPath s0 y z
  IHp : sweight (reduce p) = sweight p
  ============================
   (e.π1 + sweight (reduce p) = e.π1 + sweight p)


DEBUG:Going to execute:
<Coq.Init.Tauto.is_empty> flags X1; elim H
Level 2: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".
Level 2: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".
Level 3: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".
Level 3: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".
Level 2: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".
Level 2: Backtrace:

In environment
G : t
s0, s' : VSet.t
x, y, z : V.t
d : DisjointAdd x s0 s'
e : EdgeOf x y
p : SPath s0 y z
IHp : sweight (reduce p) = sweight p
Unable to unify "e.π1 + sweight p" with "e.π1 + sweight (reduce p)".