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Fixed issue http://z3.codeplex.com/workitem/10

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-12-09 12:23:35 -08:00
parent 7ffba3ebf4
commit 33234a4162
1 changed files with 27 additions and 1 deletions
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28
src/smt/mam.cpp
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@ -142,6 +142,14 @@ namespace smt {
}
};
struct initn : public instruction {
// We need that because starting at Z3 3.0, some associative
// operators (e.g., + and *) are represented using n-ary
// applications.
// We do not need the extra field for INIT1, ..., INIT6.
unsigned m_num_args;
};
struct compare : public instruction {
unsigned m_reg1;
unsigned m_reg2;
@ -608,7 +616,18 @@ namespace smt {
instruction * mk_init(unsigned n) {
SASSERT(n >= 1);
opcode op = n <= 6 ? static_cast<opcode>(INIT1 + n - 1) : INITN;
return mk_instr<instruction>(op, sizeof(instruction));
if (op == INITN) {
// We store the actual number of arguments for INITN.
// Starting at Z3 3.0, some associative operators
// (e.g., + and *) are represented using n-ary
// applications.
initn * r = mk_instr<initn>(op, sizeof(initn));
r->m_num_args = n;
return r;
}
else {
return mk_instr<instruction>(op, sizeof(instruction));
}
}
public:
@ -2345,6 +2364,8 @@ namespace smt {
case INITN:
m_app = m_registers[0];
m_num_args = m_app->get_num_args();
if (m_num_args != static_cast<const initn *>(m_pc)->m_num_args)
goto backtrack;
for (unsigned i = 0; i < m_num_args; i++)
m_registers[i+1] = m_app->get_arg(i);
m_pc = m_pc->m_next;
@ -3982,3 +4003,8 @@ namespace smt {
}
};
#ifdef Z3DEBUG
void pp(smt::code_tree * c) {
c->display(std::cout);
}
#endif