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se x=p entao

s0

l

Cor I=Int Proc=p|q Rec=r|s L=Proc*I Var x:Proc i:I

2’(p,0)

(x,i)

(p,i+1)

[x=p] (x,i)

se entao

l

s 1 1’(q,0)

x = q (x,i) t0

(q,i+1) (x,i)

l

Caso x p => 1’r | q => 2’r

s2

(x,i) t1 (x,i)

l s3

Caso x p => 1’r | q => 2’r 1’s

(x,i)

2’r + 1’s recurso

t2

rec

(x,i)

l

s4

(x,i)

1’s

t3 (x,i)

l

s5

(x,i) t4

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ï

tcp

garfo 2 tcp

3

tfc2

pp

3

Filosofo ttf 3 3

tcc 2 pc

pcf

3 tcc 3

pc

garfo

Êï

2

pp

2

pcf 2

Filosofo

2

2

3

pc

[ comendo] 3

1

tcc pcf

[pensando]

garfo 1 1

1

ttf 1 pp

[com fome]

1

tcp

Filosofo

1

1

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~ ;

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Wð

;‡

hð

Es

1’(p,0)+1’(q,0)+1’(j,0)

H

Caso x p => 1’f 1+1’f 2 | q => 1’f 2+1’f 3 | j => 1’f 1+1’f 3

(x,i)

t0 (x,i)

Es

Fk

E

(x,i+1)

1’f1+1’f2+1’f 3 Fork

(x,i)

t1

Caso x p => 1’f 1+1’f 2 | q => 1’f 2+1’f 3 | j => 1’f 1+1’f 3

(x,i)

Es

Cor: Ph=p|q|j I=Int Fk=f |f |f Es=Ph*I Var x:Ph i:I

Th

t3

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¬

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Programa If

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0

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t1 (X=Y) p

p

1

TRUE

t2

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2

k?c

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x:=y+2

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x:= y+2 (a)

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Programa while b<>c seq

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c

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p

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Distribuicao p

Programa

0

t

par E(t.in, t.out)

p

p

1

K(t.in)

0

p

2

3

S(t.out) K

(a)

P (b)

4

Juncao

E

S

5

p

p

t

6

1

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