YES(?, 2*b + 2*c + 7)

Initial complexity problem:
1:	T:
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, 1, f, g, h, i, j) [ a >= 1 /\ b >= c + 1 /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, d + 1, 1, f, g, h, i, j) [ a >= 1 /\ c >= b /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, -1, f, g, h, i, j) [ b >= c + 1 /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d + 1, -1, f, g, h, i, j) [ c >= b /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, e, f, g, h, i, j) [ c >= b /\ a >= 1 /\ d = c + 1 /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ a >= 1 /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, e, f, g, h, i, j) [ 0 >= a /\ c >= b /\ d = c + 1 /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(1, 1)    start0(a, b, c, d, e, f, g, h, i, j) -> start(a, b, c, b, f, f, c, i, i, a)
	start location:	start0
	leaf cost:	0

Testing for unsatisfiable constraints removes the following transitions from problem 1:
	lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ a >= 1 /\ e = 1 /\ j = a /\ h = i /\ g = c ]
	lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
We thus obtain the following problem:
2:	T:
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, 1, f, g, h, i, j) [ a >= 1 /\ b >= c + 1 /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, d + 1, 1, f, g, h, i, j) [ a >= 1 /\ c >= b /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, -1, f, g, h, i, j) [ b >= c + 1 /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d + 1, -1, f, g, h, i, j) [ c >= b /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, e, f, g, h, i, j) [ c >= b /\ a >= 1 /\ d = c + 1 /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> stop(a, b, c, d, e, f, g, h, i, j) [ 0 >= a /\ c >= b /\ d = c + 1 /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(1, 1)    start0(a, b, c, d, e, f, g, h, i, j) -> start(a, b, c, b, f, f, c, i, i, a)
	start location:	start0
	leaf cost:	0

Repeatedly removing leaves of the complexity graph in problem 2 produces the following problem:
3:	T:
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, d + 1, 1, f, g, h, i, j) [ a >= 1 /\ c >= b /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d + 1, -1, f, g, h, i, j) [ c >= b /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(1, 1)    start0(a, b, c, d, e, f, g, h, i, j) -> start(a, b, c, b, f, f, c, i, i, a)
	start location:	start0
	leaf cost:	4

Repeatedly propagating knowledge in problem 3 produces the following problem:
4:	T:
		(1, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, d + 1, 1, f, g, h, i, j) [ a >= 1 /\ c >= b /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(1, 1)    start(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d + 1, -1, f, g, h, i, j) [ c >= b /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(?, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(?, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(1, 1)    start0(a, b, c, d, e, f, g, h, i, j) -> start(a, b, c, b, f, f, c, i, i, a)
	start location:	start0
	leaf cost:	4

A polynomial rank function with
	Pol(start) = V_3 - V_4
	Pol(lbl71) = V_3 - V_4 + 1
	Pol(lbl81) = V_3 - V_4 + 1
	Pol(start0) = -V_2 + V_3
orients all transitions weakly and the transitions
	lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
	lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
strictly and produces the following problem:
5:	T:
		(1, 1)        start(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, d + 1, 1, f, g, h, i, j) [ a >= 1 /\ c >= b /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(1, 1)        start(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d + 1, -1, f, g, h, i, j) [ c >= b /\ 0 >= a /\ d = b /\ e = f /\ g = c /\ h = i /\ j = a ]
		(b + c, 1)    lbl71(a, b, c, d, e, f, g, h, i, j) -> lbl71(a, b, c, e + d, e, f, g, h, i, j) [ a >= 1 /\ c >= d /\ d >= b + 1 /\ c + 1 >= d /\ e = 1 /\ j = a /\ h = i /\ g = c ]
		(b + c, 1)    lbl81(a, b, c, d, e, f, g, h, i, j) -> lbl81(a, b, c, d - e, e, f, g, h, i, j) [ c >= d /\ 0 >= a /\ d >= b + 1 /\ c + 1 >= d /\ e + 1 = 0 /\ j = a /\ h = i /\ g = c ]
		(1, 1)        start0(a, b, c, d, e, f, g, h, i, j) -> start(a, b, c, b, f, f, c, i, i, a)
	start location:	start0
	leaf cost:	4

Complexity upper bound 2*b + 2*c + 7

Time: 0.561 sec (SMT: 0.530 sec)