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https://github.com/Z3Prover/z3
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Merge branch 'unstable' of https://git01.codeplex.com/z3 into fpa-api
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commit
0ceb67ae33
2
README
2
README
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@ -41,3 +41,5 @@ Remark: clang does not support OpenMP yet.
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cd build
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make
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To clean Z3 you can delete the build directory and run the mk_make.py script again.
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@ -3813,6 +3813,18 @@ def RepeatBitVec(n, a):
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_z3_assert(is_bv(a), "Second argument must be a Z3 Bitvector expression")
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return BitVecRef(Z3_mk_repeat(a.ctx_ref(), n, a.as_ast()), a.ctx)
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def BVRedAnd(a):
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"""Return the reduction-and expression of `a`."""
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if __debug__:
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_z3_assert(is_bv(a), "First argument must be a Z3 Bitvector expression")
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return BitVecRef(Z3_mk_bvredand(a.ctx_ref(), a.as_ast()), a.ctx)
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def BVRedOr(a):
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"""Return the reduction-or expression of `a`."""
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if __debug__:
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_z3_assert(is_bv(a), "First argument must be a Z3 Bitvector expression")
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return BitVecRef(Z3_mk_bvredor(a.ctx_ref(), a.as_ast()), a.ctx)
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#########################################
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#
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# Arrays
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@ -3321,13 +3321,13 @@ namespace smt {
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CASSERT("dyn_ack", check_clauses(m_lemmas) && check_clauses(m_aux_clauses));
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}
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if (resource_limits_exceeded()) {
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SASSERT(!inconsistent());
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if (resource_limits_exceeded() && !inconsistent()) {
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return l_undef;
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}
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if (m_base_lvl == m_scope_lvl && m_fparams.m_simplify_clauses)
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simplify_clauses();
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if (!decide()) {
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final_check_status fcs = final_check();
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@ -3342,8 +3342,7 @@ namespace smt {
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}
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}
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if (resource_limits_exceeded()) {
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SASSERT(!inconsistent());
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if (resource_limits_exceeded() && !inconsistent()) {
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return l_undef;
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}
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}
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@ -336,8 +336,9 @@ namespace smt {
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theory_var theory_arith<Ext>::internalize_rem(app * n) {
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theory_var s = mk_binary_op(n);
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context & ctx = get_context();
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if (!ctx.relevancy())
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if (!ctx.relevancy()) {
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mk_rem_axiom(n->get_arg(0), n->get_arg(1));
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}
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return s;
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}
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@ -456,22 +457,20 @@ namespace smt {
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template<typename Ext>
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void theory_arith<Ext>::mk_rem_axiom(expr * dividend, expr * divisor) {
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if (!m_util.is_zero(divisor)) {
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// if divisor is zero, then rem is an uninterpreted function.
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ast_manager & m = get_manager();
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expr * zero = m_util.mk_numeral(rational(0), true);
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expr * rem = m_util.mk_rem(dividend, divisor);
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expr * mod = m_util.mk_mod(dividend, divisor);
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expr_ref dltz(m), eq1(m), eq2(m);
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dltz = m_util.mk_lt(divisor, zero);
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eq1 = m.mk_eq(rem, mod);
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eq2 = m.mk_eq(rem, m_util.mk_sub(zero, mod));
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// n < 0 || rem(a,n) = mod(a, n)
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mk_axiom(dltz, eq1);
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dltz = m.mk_not(dltz);
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// !n < 0 || rem(a,n) = -mod(a, n)
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mk_axiom(dltz, eq2);
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}
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// if divisor is zero, then rem is an uninterpreted function.
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ast_manager & m = get_manager();
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expr * zero = m_util.mk_numeral(rational(0), true);
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expr * rem = m_util.mk_rem(dividend, divisor);
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expr * mod = m_util.mk_mod(dividend, divisor);
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expr_ref dltz(m), eq1(m), eq2(m);
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dltz = m_util.mk_lt(divisor, zero);
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eq1 = m.mk_eq(rem, mod);
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eq2 = m.mk_eq(rem, m_util.mk_sub(zero, mod));
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// n < 0 || rem(a,n) = mod(a, n)
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mk_axiom(dltz, eq1);
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dltz = m.mk_not(dltz);
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// !n < 0 || rem(a,n) = -mod(a, n)
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mk_axiom(dltz, eq2);
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}
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//
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