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@ -1,15 +1,19 @@ |
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// integer semantics version of abstract firewire protocol |
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// with clock for deadline properties |
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// gxn 23/05/2001 |
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mdp |
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//deadline |
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// deadline |
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const int deadline; |
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// largest constant the deadline clock is compared to |
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const int ky = deadline; |
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// wire delay (based on max length of wire) |
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const int delay; |
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// probability of choosing fast |
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const double fast; |
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const double slow = 1-fast; |
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// largest constant the clock of the system is compared to |
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// maximal constant |
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const int kx = 167; |
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module abstract_firewire |
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@ -17,55 +21,56 @@ module abstract_firewire |
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// deadline clock |
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y : [0..ky+1]; |
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// clock of the system |
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// model clock |
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x : [0..kx+1]; |
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// local state |
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s : [0..10]; |
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// 0 - start_start |
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// 1 - fast_start |
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// 2 - start_fast |
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// 3 - start_slow |
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// 4 - slow_start |
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// 5 - fast_fast |
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// 6 - fast_slow |
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// 7 - slow_fast |
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// 8 - slow_slow |
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// 9 - done |
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// 10 - deadline exceeded |
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// 0 -start_start |
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// 1 -fast_start |
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// 2 -start_fast |
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// 3 -start_slow |
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// 4 -slow_start |
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// 5 -fast_fast |
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// 6 -fast_slow |
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// 7 -slow_fast |
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// 8 -slow_slow |
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// 9 -done |
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// 10 - passed deadline |
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// initial state |
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[] (s=0) & (x<36) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=0) & (y<=deadline) -> 0.5 : (s'=1) + 0.5 : (s'=4); |
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[] (s=0) & (y<=deadline) -> 0.5 : (s'=2) + 0.5 : (s'=3); |
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[] (s=0) & (x<delay) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=0) & (y<=deadline) -> fast : (s'=1) + slow : (s'=4); |
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[] (s=0) & (y<=deadline) -> fast : (s'=2) + slow : (s'=3); |
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// fast_start |
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[] (s=1) & (x<36) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=1) & (y<=deadline) -> 0.5 : (s'=5) & (x'=0) + 0.5 : (s'=6) & (x'=0); |
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[] (s=1) & (x<delay) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=1) & (y<=deadline) -> fast : (s'=5) & (x'=0) + slow : (s'=6) & (x'=0); |
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// start_fast |
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[] (s=2) & (x<36) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=2) & (y<=deadline) -> 0.5 : (s'=5) & (x'=0) + 0.5 : (s'=7) & (x'=0); |
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[] (s=2) & (x<delay) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=2) & (y<=deadline) -> fast : (s'=5) & (x'=0) + slow : (s'=7) & (x'=0); |
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// start_slow |
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[] (s=3) & (x<36) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=3) & (y<=deadline) -> 0.5 : (s'=6) & (x'=0) + 0.5 : (s'=8) & (x'=0); |
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[] (s=3) & (x<delay) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=3) & (y<=deadline) -> fast : (s'=6) & (x'=0) + slow : (s'=8) & (x'=0); |
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// slow_start |
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[] (s=4) & (x<36) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=4) & (y<=deadline) -> 0.5 : (s'=7) & (x'=0) + 0.5 : (s'=8) & (x'=0); |
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[] (s=4) & (x<delay) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=4) & (y<=deadline) -> fast : (s'=7) & (x'=0) + slow : (s'=8) & (x'=0); |
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// fast_fast |
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[] (s=5) & (x<85) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=5) & (x>=76) & (y<=deadline) -> (s'=0) & (x'=0); |
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[] (s=5) & (x>=40) & (y<=deadline) -> (s'=9) & (x'=0); |
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[] (s=5) & (x>=76-delay) & (y<=deadline) -> (s'=9) & (x'=0); |
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// fast_slow |
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[] (s=6) & (x<167) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=6) & (x>=123) & (y<=deadline) -> (s'=9) & (x'=0); |
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[] (s=6) & (x>=159-delay) & (y<=deadline) -> (s'=9) & (x'=0); |
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// slow_fast |
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[] (s=7) & (x<167) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=7) & (x>=123) & (y<=deadline) -> (s'=9) & (x'=0); |
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[] (s=7) & (x>=159-delay) & (y<=deadline) -> (s'=9) & (x'=0); |
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// slow_slow |
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[] (s=8) & (x<167) -> (x'=min(x+1,kx+1)) & (y'=min(y+1,ky+1)); |
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[] (s=8) & (x>=159) & (y<=deadline) -> (s'=0) & (x'=0); |
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[] (s=8) & (x>=123) & (y<=deadline) -> (s'=9) & (x'=0); |
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[] (s=8) & (x>=159-delay) & (y<=deadline) -> (s'=9) & (x'=0); |
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// move to deadline exceeded when y>=deadline |
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[] (y>=deadline) -> (s'=10); |
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[] (y>deadline) & (s<9) -> (s'=10) & (y'=0); |
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// done |
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[] (s=9) -> (s'=9); |
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// deadline exceeded |
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