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doubling distance_warning, getside and examine_branch to detect loops early

This commit is contained in:
Zeno Rogue 2021-12-29 04:27:17 +01:00
parent 014e995ef1
commit 894da8c55a
1 changed files with 22 additions and 6 deletions
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28
rulegen.cpp
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@ -90,6 +90,8 @@ EX flagtype flags = 0;
EX int64_t movecount;
EX int current_getside, current_examine_branch;
#if HDR
struct tcell* tmove(tcell *c, int d);
@ -656,7 +658,9 @@ EX void fix_distances(tcell *c) {
tgt->any_nearer = tgtw.spin;
if(new_d >= next_distance_warning) {
if(new_d >= MYSTERY-1) throw rulegen_failure("distance limit exceeded");
next_distance_warning = new_d; distance_warnings++;
if(next_distance_warning < 10000) next_distance_warning *= 2;
else if(next_distance_warning < 20000) next_distance_warning = 20000;
else next_distance_warning = new_d; distance_warnings++;
}
return true;
}
@ -1196,11 +1200,17 @@ int get_side(twalker what) {
lstack.resize(1); rstack.resize(1);
while(res == 99) {
handle_distance_errors();
steps++; if(steps > max_getside) {
steps++; if(steps > current_getside) {
debuglist = {what, to_what, wl, wr};
checks_to_skip.clear();
if(parent_updates) throw rulegen_retry("xsidefreeze");
else throw rulegen_failure("xsidefreeze");
else if(steps > max_getside) {
throw rulegen_failure("xsidefreeze");
}
else {
current_getside *= 2;
throw rulegen_retry("xsidefreeze double");
}
}
bool gl = wl.at->dist <= wr.at->dist;
bool gr = wl.at->dist >= wr.at->dist;
@ -1639,7 +1649,7 @@ bool examine_branch(int id, int left, int right) {
while(true) {
handle_distance_errors();
steps++;
if(steps > max_examine_branch) {
if(steps > current_examine_branch) {
debuglist = { rg+left, wl, wr };
if(skipped_branches.size()) {
checks_to_skip.clear();
@ -1648,8 +1658,12 @@ bool examine_branch(int id, int left, int right) {
else if(branch_conflicts_seen.size())
/* may be not a real problem, but caused by incorrect detection of live branches */
throw rulegen_retry("max_examine_branch exceeded after a conflict");
else
else if(steps > max_examine_branch)
throw rulegen_failure("max_examine_branch exceeded");
else {
current_examine_branch *= 2;
throw rulegen_retry("max_examine_branch exceeded, doubling");
}
}
auto tsl = get_tsinfo(wl);
@ -2006,7 +2020,9 @@ EX void generate_rules() {
treestates.clear();
hard_parents = single_live_branches = double_live_branches = all_solid_errors = solid_errors = 0;
next_distance_warning = 30000;
next_distance_warning = 512;
current_getside = 512;
current_examine_branch = 512;
int NS = isize(arb::current.shapes);
shortcuts.resize(NS);