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working on supporting multiple max-sat objectives

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-11-08 16:54:34 -08:00
parent f350efffc7
commit 9f53a4aa18
7 changed files with 65 additions and 23 deletions
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20
src/opt/opt_cmds.cpp
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@ -50,6 +50,7 @@ class assert_weighted_cmd : public cmd {
unsigned m_idx;
expr* m_formula;
rational m_weight;
symbol m_id;
public:
assert_weighted_cmd(cmd_context& ctx, opt_context& opt_ctx):
@ -70,15 +71,22 @@ public:
}
m_idx = 0;
m_formula = 0;
m_id = symbol::null;
}
virtual char const * get_usage() const { return "<formula> <rational-weight>"; }
virtual char const * get_descr(cmd_context & ctx) const { return "assert soft constraint with weight"; }
virtual unsigned get_arity() const { return 2; }
virtual unsigned get_arity() const { return VAR_ARITY; }
// command invocation
virtual void prepare(cmd_context & ctx) {}
virtual cmd_arg_kind next_arg_kind(cmd_context & ctx) const { if (m_idx == 0) return CPK_EXPR; return CPK_NUMERAL; }
virtual cmd_arg_kind next_arg_kind(cmd_context & ctx) const {
switch(m_idx) {
case 0: return CPK_EXPR;
case 1: return CPK_NUMERAL;
default: return CPK_SYMBOL;
}
}
virtual void set_next_arg(cmd_context & ctx, rational const & val) {
SASSERT(m_idx == 1);
if (!val.is_pos()) {
@ -98,12 +106,18 @@ public:
++m_idx;
}
virtual void set_next_arg(cmd_context & ctx, symbol const& s) {
SASSERT(m_idx > 1);
m_id = s;
++m_idx;
}
virtual void failure_cleanup(cmd_context & ctx) {
reset(ctx);
}
virtual void execute(cmd_context & ctx) {
m_opt_ctx().add_soft_constraint(m_formula, m_weight);
m_opt_ctx().add_soft_constraint(m_formula, m_weight, m_id);
reset(ctx);
}