smt

问题 Does CVC4 an option to maximize or minimize the result model for bitvectors as Z3 does? Thanks. 回答1: Unfortunately, CVC4 does not (yet) support optimization. For bitvectors, you can always do it yourself using multiple queries and binary search, but it's not built-in. 来源： https://stackoverflow.com/questions/37304885/cvc4-minimize-maximize-model-optimization

问题 Does CVC4 an option to maximize or minimize the result model for bitvectors as Z3 does? Thanks. 回答1: Unfortunately, CVC4 does not (yet) support optimization. For bitvectors, you can always do it yourself using multiple queries and binary search, but it's not built-in. 来源： https://stackoverflow.com/questions/37304885/cvc4-minimize-maximize-model-optimization

问题 By adding conditions to the solver, I want to check with "solver.check()", whether there exists a solution or not. Therefore, I created a simple example to find a solution for t1. I know that there is a solution for t1, namely t1 = 0. Nevertheless, the solver has not the status "SATISFIABLE". public static void main(String[] args) { int h_max = 7; HashMap<String, String> cfg = new HashMap<String, String>(); cfg.put("model", "true"); Context ctx = new Context(cfg); FPSort s = ctx.mkFPSort(5,

问题 I am trying to model a small programming language in SMT-LIB 2. My intent is to express some program analysis problems and solve them with Z3. I think I am misunderstanding the forall statement though. Here is a snippet of my code. ; barriers.smt2 (declare-datatype Barrier ((barrier (proc Int) (rank Int) (group Int) (complete-time Int)))) ; barriers in the same group complete at the same time (assert (forall ((b1 Barrier) (b2 Barrier)) (=> (= (group b1) (group b2)) (= (complete-time b1)

问题 I am trying to model a small programming language in SMT-LIB 2. My intent is to express some program analysis problems and solve them with Z3. I think I am misunderstanding the forall statement though. Here is a snippet of my code. ; barriers.smt2 (declare-datatype Barrier ((barrier (proc Int) (rank Int) (group Int) (complete-time Int)))) ; barriers in the same group complete at the same time (assert (forall ((b1 Barrier) (b2 Barrier)) (=> (= (group b1) (group b2)) (= (complete-time b1)

问题 I have tried to implement Floor and Ceiling Function as defined in the following link https://math.stackexchange.com/questions/3619044/floor-or-ceiling-function-encoding-in-first-order-logic/3619320#3619320 But Z3 query returning counterexample. Floor Function _X=Real('_X') _Y=Int('_Y') _W=Int('_W') _n=Int('_n') _Floor=Function('_Floor',RealSort(),IntSort()) .. _s.add(_X>=0) _s.add(_Y>=0) _s.add(Implies(_Floor(_X)==_Y,And(Or(_Y==_X,_Y<_X),ForAll(_W,Implies(And(_W>=0,_W<_X),And(_W ==_Y,_W<_Y))

来源： https://stackoverflow.com/questions/49430434/z3-support-for-exponentials

来源： https://stackoverflow.com/questions/49430434/z3-support-for-exponentials

来源： https://stackoverflow.com/questions/49430434/z3-support-for-exponentials

来源： https://stackoverflow.com/questions/48031462/z3-solve-the-eight-queens-puzzle