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runs the integer/cntrol svcomp examples from the Horn repo

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This commit is contained in:
Ken McMillan 2014-01-09 17:16:10 -08:00
parent 11ba2178a9
commit f380e31a6b
8 changed files with 814 additions and 64 deletions
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19
src/interp/iz3mgr.cpp
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@ -640,9 +640,9 @@ void iz3mgr::get_assign_bounds_rule_coeffs(const ast &proof, std::vector<rationa
/** Set P to P + cQ, where P and Q are linear inequalities. Assumes P is 0 <= y or 0 < y. */
void iz3mgr::linear_comb(ast &P, const ast &c, const ast &Q){
void iz3mgr::linear_comb(ast &P, const ast &c, const ast &Q, bool round_off){
ast Qrhs;
bool strict = op(P) == Lt;
bool qstrict = false;
if(is_not(Q)){
ast nQ = arg(Q,0);
switch(op(nQ)){
@ -654,11 +654,11 @@ void iz3mgr::linear_comb(ast &P, const ast &c, const ast &Q){
break;
case Geq:
Qrhs = make(Sub,arg(nQ,1),arg(nQ,0));
strict = true;
qstrict = true;
break;
case Leq:
Qrhs = make(Sub,arg(nQ,0),arg(nQ,1));
strict = true;
qstrict = true;
break;
default:
throw "not an inequality";
@ -674,28 +674,31 @@ void iz3mgr::linear_comb(ast &P, const ast &c, const ast &Q){
break;
case Lt:
Qrhs = make(Sub,arg(Q,1),arg(Q,0));
strict = true;
qstrict = true;
break;
case Gt:
Qrhs = make(Sub,arg(Q,0),arg(Q,1));
strict = true;
qstrict = true;
break;
default:
throw "not an inequality";
}
}
Qrhs = make(Times,c,Qrhs);
bool pstrict = op(P) == Lt, strict = pstrict || qstrict;
if(pstrict && qstrict && round_off)
Qrhs = make(Sub,Qrhs,make_int(rational(1)));
if(strict)
P = make(Lt,arg(P,0),make(Plus,arg(P,1),Qrhs));
else
P = make(Leq,arg(P,0),make(Plus,arg(P,1),Qrhs));
}
iz3mgr::ast iz3mgr::sum_inequalities(const std::vector<ast> &coeffs, const std::vector<ast> &ineqs){
iz3mgr::ast iz3mgr::sum_inequalities(const std::vector<ast> &coeffs, const std::vector<ast> &ineqs, bool round_off){
ast zero = make_int("0");
ast thing = make(Leq,zero,zero);
for(unsigned i = 0; i < ineqs.size(); i++){
linear_comb(thing,coeffs[i],ineqs[i]);
linear_comb(thing,coeffs[i],ineqs[i], round_off);
}
thing = simplify_ineq(thing);
return thing;

4
src/interp/iz3mgr.h
View file

@ -606,9 +606,9 @@ class iz3mgr {
return d;
}
void linear_comb(ast &P, const ast &c, const ast &Q);
void linear_comb(ast &P, const ast &c, const ast &Q, bool round_off = false);
ast sum_inequalities(const std::vector<ast> &coeffs, const std::vector<ast> &ineqs);
ast sum_inequalities(const std::vector<ast> &coeffs, const std::vector<ast> &ineqs, bool round_off = false);
ast simplify_ineq(const ast &ineq){
ast res = make(op(ineq),arg(ineq,0),z3_simplify(arg(ineq,1)));

4
src/interp/iz3translate.cpp
View file

@ -1079,7 +1079,7 @@ public:
my_cons.push_back(mk_not(arg(con,i)));
my_coeffs.push_back(farkas_coeffs[i]);
}
ast farkas_con = normalize_inequality(sum_inequalities(my_coeffs,my_cons));
ast farkas_con = normalize_inequality(sum_inequalities(my_coeffs,my_cons,true /* round_off */));
my_cons.push_back(mk_not(farkas_con));
my_coeffs.push_back(make_int("1"));
std::vector<Iproof::node> my_hyps;
@ -1103,7 +1103,7 @@ public:
my_cons.push_back(conc(prem(proof,i-1)));
my_coeffs.push_back(farkas_coeffs[i]);
}
ast farkas_con = normalize_inequality(sum_inequalities(my_coeffs,my_cons));
ast farkas_con = normalize_inequality(sum_inequalities(my_coeffs,my_cons,true /* round_off */));
std::vector<Iproof::node> my_hyps;
for(int i = 1; i < nargs; i++)
my_hyps.push_back(prems[i-1]);