remove import ETHEREUM-SIMULATION from SUM-TO-N-SPEC (#451)

* remove import ETHEREUM-SIMULATION from SUM-TO-N-SPEC

* tests/specs/sum-to-n: formatting, explicitely require asm.k

Author: yzhang90

tests/specs/examples/sum-to-n-spec.k

@@ -1,12 +1,4 @@
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+requires "asm.k"
 requires "edsl.k"
 requires "../lemmas.k"
 
@@ -34,50 +26,9 @@ module VERIFICATION
                     ) [macro]
 endmodule
 
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 module SUM-TO-N-SPEC
-    imports ETHEREUM-SIMULATION
     imports VERIFICATION
 
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     rule <k> #execute ... </k>
          <mode> NORMAL </mode>
          <schedule> DEFAULT </schedule>
@@ -88,32 +39,14 @@ module SUM-TO-N-SPEC
          <program> #asMapOpCodes(#dasmOpCodes(sumToN, DEFAULT)) </program>
          <programBytes> sumToN </programBytes>
 
+         <pc>        0  => 21                                </pc>
+         <wordStack> N : WS => 0 : N *Int (N +Int 1) /Int 2 : WS </wordStack>
+         <gas>       G  => G -Int (52 *Int N +Int 27)        </gas>
 
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-     <pc>        0  => 21                                </pc>
-     <wordStack> N : WS => 0 : N *Int (N +Int 1) /Int 2 : WS </wordStack>
-     <gas>       G  => G -Int (52 *Int N +Int 27)        </gas>
-
-  requires N >=Int 0
-   andBool N <=Int 340282366920938463463374607431768211455
-   andBool #sizeWordStack(WS) <Int 1021
-   andBool G >=Int 52 *Int N +Int 27
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+      requires N >=Int 0
+       andBool N <=Int 340282366920938463463374607431768211455
+       andBool #sizeWordStack(WS) <Int 1021
+       andBool G >=Int 52 *Int N +Int 27
 
     rule <k> #execute ... </k>
          <mode> NORMAL </mode>
@@ -125,30 +58,16 @@ module SUM-TO-N-SPEC
          <program> #asMapOpCodes(#dasmOpCodes(sumToN, DEFAULT)) </program>
          <programBytes> sumToN </programBytes>
 
+         <pc>  3 => 21                         </pc>
+         <gas> G => G -Int (52 *Int I +Int 21) </gas>
 
+         <wordStack> I : S                               : WS
+                  => 0 : S +Int I *Int (I +Int 1) /Int 2 : WS </wordStack>
 
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-     <pc>  3 => 21                         </pc>
-     <gas> G => G -Int (52 *Int I +Int 21) </gas>
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-     <wordStack> I : S                               : WS
-              => 0 : S +Int I *Int (I +Int 1) /Int 2 : WS </wordStack>
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-  requires I >=Int 0
-   andBool S >=Int 0
-   andBool S +Int I *Int (I +Int 1) /Int 2 <Int pow256
-   andBool #sizeWordStack(WS) <Int 1021
-   andBool G >=Int 52 *Int I +Int 21
+      requires I >=Int 0
+       andBool S >=Int 0
+       andBool S +Int I *Int (I +Int 1) /Int 2 <Int pow256
+       andBool #sizeWordStack(WS) <Int 1021
+       andBool G >=Int 52 *Int I +Int 21
 
 endmodule
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