YES(?, 80*b + 34)

Initial complexity problem:
1:	T:
		(1, 1)    evalfstart(a, b, c, d) -> evalfentryin(a, b, c, d)
		(?, 1)    evalfentryin(a, b, c, d) -> evalfbb6in(0, b, c, d)
		(?, 1)    evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ b >= a + 1 ]
		(?, 1)    evalfbb6in(a, b, c, d) -> evalfreturnin(a, b, c, d) [ a >= b ]
		(?, 1)    evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1)
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ d >= b ]
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b >= d + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ 0 >= e + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ e >= 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d)
		(?, 1)    evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1)
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ c >= 1 ]
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ 0 >= c ]
		(?, 1)    evalfreturnin(a, b, c, d) -> evalfstop(a, b, c, d)
	start location:	evalfstart
	leaf cost:	0

Repeatedly removing leaves of the complexity graph in problem 1 produces the following problem:
2:	T:
		(1, 1)    evalfstart(a, b, c, d) -> evalfentryin(a, b, c, d)
		(?, 1)    evalfentryin(a, b, c, d) -> evalfbb6in(0, b, c, d)
		(?, 1)    evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ b >= a + 1 ]
		(?, 1)    evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1)
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ d >= b ]
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b >= d + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ 0 >= e + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ e >= 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d)
		(?, 1)    evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1)
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ c >= 1 ]
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ 0 >= c ]
	start location:	evalfstart
	leaf cost:	2

Repeatedly propagating knowledge in problem 2 produces the following problem:
3:	T:
		(1, 1)    evalfstart(a, b, c, d) -> evalfentryin(a, b, c, d)
		(1, 1)    evalfentryin(a, b, c, d) -> evalfbb6in(0, b, c, d)
		(?, 1)    evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ b >= a + 1 ]
		(?, 1)    evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1)
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ d >= b ]
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b >= d + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ 0 >= e + 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ e >= 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d)
		(?, 1)    evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1)
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ c >= 1 ]
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ 0 >= c ]
	start location:	evalfstart
	leaf cost:	2

Applied AI with 'oct' on problem 3 to obtain the following invariants:
  For symbol evalfbb1in: X_2 - X_4 - 1 >= 0 /\ X_4 - 1 >= 0 /\ X_3 + X_4 - 1 >= 0 /\ -X_3 + X_4 - 1 >= 0 /\ X_2 + X_4 - 3 >= 0 /\ X_1 + X_4 - 1 >= 0 /\ -X_1 + X_4 - 1 >= 0 /\ X_2 - X_3 - 2 >= 0 /\ X_3 >= 0 /\ X_2 + X_3 - 2 >= 0 /\ X_1 + X_3 >= 0 /\ X_2 - 2 >= 0 /\ X_1 + X_2 - 2 >= 0 /\ -X_1 + X_2 - 2 >= 0 /\ X_1 >= 0
  For symbol evalfbb2in: X_2 - X_4 >= 0 /\ X_4 - 1 >= 0 /\ X_3 + X_4 - 1 >= 0 /\ -X_3 + X_4 - 1 >= 0 /\ X_2 + X_4 - 2 >= 0 /\ X_1 + X_4 - 1 >= 0 /\ -X_1 + X_4 - 1 >= 0 /\ X_2 - X_3 - 1 >= 0 /\ X_3 >= 0 /\ X_2 + X_3 - 1 >= 0 /\ X_1 + X_3 >= 0 /\ X_2 - 1 >= 0 /\ X_1 + X_2 - 1 >= 0 /\ -X_1 + X_2 - 1 >= 0 /\ X_1 >= 0
  For symbol evalfbb3in: X_2 - X_4 - 1 >= 0 /\ X_4 - 1 >= 0 /\ X_3 + X_4 - 1 >= 0 /\ -X_3 + X_4 - 1 >= 0 /\ X_2 + X_4 - 3 >= 0 /\ X_1 + X_4 - 1 >= 0 /\ -X_1 + X_4 - 1 >= 0 /\ X_2 - X_3 - 2 >= 0 /\ X_3 >= 0 /\ X_2 + X_3 - 2 >= 0 /\ X_1 + X_3 >= 0 /\ X_2 - 2 >= 0 /\ X_1 + X_2 - 2 >= 0 /\ -X_1 + X_2 - 2 >= 0 /\ X_1 >= 0
  For symbol evalfbb4in: X_2 - X_4 >= 0 /\ X_4 - 1 >= 0 /\ X_3 + X_4 - 1 >= 0 /\ -X_3 + X_4 - 1 >= 0 /\ X_2 + X_4 - 2 >= 0 /\ X_1 + X_4 - 1 >= 0 /\ -X_1 + X_4 - 1 >= 0 /\ X_2 - X_3 - 1 >= 0 /\ X_3 >= 0 /\ X_2 + X_3 - 1 >= 0 /\ X_1 + X_3 >= 0 /\ X_2 - 1 >= 0 /\ X_1 + X_2 - 1 >= 0 /\ -X_1 + X_2 - 1 >= 0 /\ X_1 >= 0
  For symbol evalfbb6in: X_1 >= 0
  For symbol evalfbbin: X_2 - 1 >= 0 /\ X_1 + X_2 - 1 >= 0 /\ -X_1 + X_2 - 1 >= 0 /\ X_1 >= 0


This yielded the following problem:
4:	T:
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ 0 >= c ]
		(?, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ c >= 1 ]
		(?, 1)    evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ e >= 1 ]
		(?, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ 0 >= e + 1 ]
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ b >= d + 1 ]
		(?, 1)    evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ d >= b ]
		(?, 1)    evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1) [ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 ]
		(?, 1)    evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ a >= 0 /\ b >= a + 1 ]
		(1, 1)    evalfentryin(a, b, c, d) -> evalfbb6in(0, b, c, d)
		(1, 1)    evalfstart(a, b, c, d) -> evalfentryin(a, b, c, d)
	start location:	evalfstart
	leaf cost:	2

A polynomial rank function with
	Pol(evalfbb4in) = 8*V_2 + 5*V_3 - 8*V_4 + 1
	Pol(evalfbb6in) = -8*V_1 + 8*V_2 - 3
	Pol(evalfbb1in) = 8*V_2 + 5*V_3 - 8*V_4 + 1
	Pol(evalfbb2in) = 8*V_2 + 5*V_3 - 8*V_4 + 3
	Pol(evalfbb3in) = 8*V_2 + 5*V_3 - 8*V_4 + 2
	Pol(evalfbbin) = -8*V_1 + 8*V_2 - 4
	Pol(evalfentryin) = 8*V_2 - 3
	Pol(evalfstart) = 8*V_2 - 3
orients all transitions weakly and the transitions
	evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1) [ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 ]
	evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ a >= 0 /\ b >= a + 1 ]
	evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ 0 >= c ]
	evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ c >= 1 ]
	evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
	evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ e >= 1 ]
	evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ 0 >= e + 1 ]
	evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ d >= b ]
	evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ b >= d + 1 ]
	evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
strictly and produces the following problem:
5:	T:
		(8*b + 3, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ 0 >= c ]
		(8*b + 3, 1)    evalfbb4in(a, b, c, d) -> evalfbb6in(d - 1, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ c >= 1 ]
		(8*b + 3, 1)    evalfbb1in(a, b, c, d) -> evalfbb2in(a, b, c + 1, d + 1) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
		(8*b + 3, 1)    evalfbb3in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 ]
		(8*b + 3, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ e >= 1 ]
		(8*b + 3, 1)    evalfbb3in(a, b, c, d) -> evalfbb1in(a, b, c, d) [ b - d - 1 >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 3 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 2 >= 0 /\ c >= 0 /\ b + c - 2 >= 0 /\ a + c >= 0 /\ b - 2 >= 0 /\ a + b - 2 >= 0 /\ -a + b - 2 >= 0 /\ a >= 0 /\ 0 >= e + 1 ]
		(8*b + 3, 1)    evalfbb2in(a, b, c, d) -> evalfbb3in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ b >= d + 1 ]
		(8*b + 3, 1)    evalfbb2in(a, b, c, d) -> evalfbb4in(a, b, c, d) [ b - d >= 0 /\ d - 1 >= 0 /\ c + d - 1 >= 0 /\ -c + d - 1 >= 0 /\ b + d - 2 >= 0 /\ a + d - 1 >= 0 /\ -a + d - 1 >= 0 /\ b - c - 1 >= 0 /\ c >= 0 /\ b + c - 1 >= 0 /\ a + c >= 0 /\ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 /\ d >= b ]
		(8*b + 3, 1)    evalfbbin(a, b, c, d) -> evalfbb2in(a, b, 0, a + 1) [ b - 1 >= 0 /\ a + b - 1 >= 0 /\ -a + b - 1 >= 0 /\ a >= 0 ]
		(8*b + 3, 1)    evalfbb6in(a, b, c, d) -> evalfbbin(a, b, c, d) [ a >= 0 /\ b >= a + 1 ]
		(1, 1)          evalfentryin(a, b, c, d) -> evalfbb6in(0, b, c, d)
		(1, 1)          evalfstart(a, b, c, d) -> evalfentryin(a, b, c, d)
	start location:	evalfstart
	leaf cost:	2

Complexity upper bound 80*b + 34

Time: 0.857 sec (SMT: 0.792 sec)