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[Frama-c-discuss] Functions in Predicates

  • Subject: [Frama-c-discuss] Functions in Predicates
  • From: michaelschausten at (Michael Schausten)
  • Date: Tue, 24 Aug 2010 10:42:51 +0200


is there a possibility to create more complex predicates using complete 
functions? I have a function that returns a boolean value depending on 2 

bool func1(int x, int y) {
  bool result;
  return result;

/*@ predicate is_correct(int x, int y) = (func1(x,y));
/*@ requires is_correct(x,y);
  @ ensures (\result == 1);
int func2 (int x, int y) {
  // do something, that depends on x and y
  return 1;

However, it does not work like this. What am I doing wrong, or is it 
maybe not possible to use C-functions in predicates?