mirror of https://github.com/YosysHQ/yosys.git
Merge pull request #2018 from boqwxp/qbfsat-timeout
smtbmc and qbfsat: Add timeout option to set solver timeouts for Z3, Yices, and CVC4.
This commit is contained in:
clairexen
GitHub
commit
ea46ed81f9
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@ -1557,8 +1557,9 @@ else: # not tempind, covermode
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smt_assert(get_constr_expr(constr_asserts, i))
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print_msg("Solving for step %d.." % (last_check_step))
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if smt_check_sat() != "sat":
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print("%s No solution found!" % smt.timestamp())
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status = smt_check_sat()
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if status != "sat":
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print("%s No solution found! (%s)" % (smt.timestamp(), status))
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retstatus = "FAILED"
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break
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@ -121,6 +121,7 @@ class SmtIo:
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self.logic_bv = True
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self.logic_dt = False
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self.forall = False
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self.timeout = 0
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self.produce_models = True
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self.smt2cache = [list()]
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self.p = None
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@ -135,6 +136,7 @@ class SmtIo:
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self.debug_file = opts.debug_file
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self.dummy_file = opts.dummy_file
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self.timeinfo = opts.timeinfo
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self.timeout = opts.timeout
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self.unroll = opts.unroll
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self.noincr = opts.noincr
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self.info_stmts = opts.info_stmts
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@ -147,6 +149,7 @@ class SmtIo:
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self.debug_file = None
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self.dummy_file = None
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self.timeinfo = os.name != "nt"
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self.timeout = 0
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self.unroll = False
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self.noincr = False
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self.info_stmts = list()
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@ -176,18 +179,28 @@ class SmtIo:
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self.popen_vargs = ['yices-smt2'] + self.solver_opts
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else:
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self.popen_vargs = ['yices-smt2', '--incremental'] + self.solver_opts
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if self.timeout != 0:
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self.popen_vargs.append('-t')
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self.popen_vargs.append('%d' % self.timeout);
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if self.solver == "z3":
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self.popen_vargs = ['z3', '-smt2', '-in'] + self.solver_opts
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if self.timeout != 0:
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self.popen_vargs.append('-T:%d' % self.timeout);
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if self.solver == "cvc4":
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if self.noincr:
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self.popen_vargs = ['cvc4', '--lang', 'smt2.6' if self.logic_dt else 'smt2'] + self.solver_opts
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else:
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self.popen_vargs = ['cvc4', '--incremental', '--lang', 'smt2.6' if self.logic_dt else 'smt2'] + self.solver_opts
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if self.timeout != 0:
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self.popen_vargs.append('--tlimit=%d000' % self.timeout);
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if self.solver == "mathsat":
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self.popen_vargs = ['mathsat'] + self.solver_opts
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if self.timeout != 0:
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print('timeout option is not supported for mathsat.')
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sys.exit(1)
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if self.solver == "boolector":
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if self.noincr:
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@ -195,6 +208,9 @@ class SmtIo:
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else:
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self.popen_vargs = ['boolector', '--smt2', '-i'] + self.solver_opts
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self.unroll = True
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if self.timeout != 0:
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print('timeout option is not supported for boolector.')
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sys.exit(1)
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if self.solver == "abc":
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if len(self.solver_opts) > 0:
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@ -204,6 +220,9 @@ class SmtIo:
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self.logic_ax = False
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self.unroll = True
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self.noincr = True
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if self.timeout != 0:
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print('timeout option is not supported for abc.')
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sys.exit(1)
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if self.solver == "dummy":
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assert self.dummy_file is not None
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@ -710,7 +729,7 @@ class SmtIo:
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if self.forall:
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result = self.read()
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while result not in ["sat", "unsat", "unknown"]:
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while result not in ["sat", "unsat", "unknown", "timeout", "interrupted", ""]:
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print("%s %s: %s" % (self.timestamp(), self.solver, result))
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result = self.read()
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else:
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@ -721,7 +740,7 @@ class SmtIo:
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print("(check-sat)", file=self.debug_file)
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self.debug_file.flush()
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if result not in ["sat", "unsat"]:
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if result not in ["sat", "unsat", "unknown", "timeout", "interrupted"]:
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if result == "":
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print("%s Unexpected EOF response from solver." % (self.timestamp()), flush=True)
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else:
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@ -931,7 +950,7 @@ class SmtIo:
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class SmtOpts:
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def __init__(self):
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self.shortopts = "s:S:v"
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self.longopts = ["unroll", "noincr", "noprogress", "dump-smt2=", "logic=", "dummy=", "info=", "nocomments"]
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self.longopts = ["unroll", "noincr", "noprogress", "timeout=", "dump-smt2=", "logic=", "dummy=", "info=", "nocomments"]
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self.solver = "yices"
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self.solver_opts = list()
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self.debug_print = False
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@ -940,6 +959,7 @@ class SmtOpts:
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self.unroll = False
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self.noincr = False
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self.timeinfo = os.name != "nt"
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self.timeout = 0
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self.logic = None
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self.info_stmts = list()
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self.nocomments = False
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@ -949,6 +969,8 @@ class SmtOpts:
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self.solver = a
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elif o == "-S":
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self.solver_opts.append(a)
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elif o == "--timeout":
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self.timeout = int(a)
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elif o == "-v":
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self.debug_print = True
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elif o == "--unroll":
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@ -980,6 +1002,9 @@ class SmtOpts:
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-S <opt>
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pass <opt> as command line argument to the solver
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--timeout <value>
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set the solver timeout to the specified value (in seconds).
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--logic <smt2_logic>
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use the specified SMT2 logic (e.g. QF_AUFBV)
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@ -42,6 +42,7 @@ struct QbfSolveOptions {
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bool nooptimize, nobisection;
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bool sat, unsat, show_smtbmc;
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enum Solver{Z3, Yices, CVC4} solver;
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int timeout;
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std::string specialize_soln_file;
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std::string write_soln_soln_file;
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std::string dump_final_smt2_file;
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@ -49,7 +50,7 @@ struct QbfSolveOptions {
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QbfSolveOptions() : specialize(false), specialize_from_file(false), write_solution(false),
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nocleanup(false), dump_final_smt2(false), assume_outputs(false), assume_neg(false),
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nooptimize(false), nobisection(false), sat(false), unsat(false), show_smtbmc(false),
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solver(Yices), argidx(0) {};
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solver(Yices), timeout(0), argidx(0) {};
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};
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std::string get_solver_name(const QbfSolveOptions &opt) {
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@ -67,6 +68,11 @@ std::string get_solver_name(const QbfSolveOptions &opt) {
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void recover_solution(QbfSolutionType &sol) {
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YS_REGEX_TYPE sat_regex = YS_REGEX_COMPILE("Status: PASSED");
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YS_REGEX_TYPE unsat_regex = YS_REGEX_COMPILE("Solver Error.*model is not available");
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YS_REGEX_TYPE unsat_regex2 = YS_REGEX_COMPILE("Status: FAILED");
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YS_REGEX_TYPE timeout_regex = YS_REGEX_COMPILE("No solution found! \\(timeout\\)");
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YS_REGEX_TYPE timeout_regex2 = YS_REGEX_COMPILE("No solution found! \\(interrupted\\)");
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YS_REGEX_TYPE unknown_regex = YS_REGEX_COMPILE("No solution found! \\(unknown\\)");
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YS_REGEX_TYPE unknown_regex2 = YS_REGEX_COMPILE("Unexpected EOF response from solver");
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YS_REGEX_TYPE memout_regex = YS_REGEX_COMPILE("Solver Error:.*error \"out of memory\"");
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YS_REGEX_TYPE hole_value_regex = YS_REGEX_COMPILE_WITH_SUBS("Value for anyconst in [a-zA-Z0-9_]* \\(([^:]*:[^\\)]*)\\): (.*)");
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#ifndef NDEBUG
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@ -87,14 +93,40 @@ void recover_solution(QbfSolutionType &sol) {
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#endif
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sol.hole_to_value[loc] = val;
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}
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else if (YS_REGEX_NS::regex_search(x, sat_regex))
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else if (YS_REGEX_NS::regex_search(x, sat_regex)) {
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sat_regex_found = true;
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else if (YS_REGEX_NS::regex_search(x, unsat_regex))
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sol.sat = true;
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sol.unknown = false;
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}
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else if (YS_REGEX_NS::regex_search(x, unsat_regex)) {
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unsat_regex_found = true;
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sol.sat = false;
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sol.unknown = false;
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}
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else if (YS_REGEX_NS::regex_search(x, memout_regex)) {
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sol.unknown = true;
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log_warning("solver ran out of memory\n");
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}
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else if (YS_REGEX_NS::regex_search(x, timeout_regex)) {
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sol.unknown = true;
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log_warning("solver timed out\n");
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}
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else if (YS_REGEX_NS::regex_search(x, timeout_regex2)) {
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sol.unknown = true;
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log_warning("solver timed out\n");
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}
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else if (YS_REGEX_NS::regex_search(x, unknown_regex)) {
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sol.unknown = true;
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log_warning("solver returned \"unknown\"\n");
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}
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else if (YS_REGEX_NS::regex_search(x, unsat_regex2)) {
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unsat_regex_found = true;
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sol.sat = false;
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sol.unknown = false;
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}
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else if (YS_REGEX_NS::regex_search(x, unknown_regex2)) {
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sol.unknown = true;
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}
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}
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#ifndef NDEBUG
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log_assert(!sol.unknown && sol.sat? sat_regex_found : true);
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@ -329,7 +361,7 @@ QbfSolutionType call_qbf_solver(RTLIL::Module *mod, const QbfSolveOptions &opt,
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const std::string yosys_smtbmc_exe = proc_self_dirname() + "yosys-smtbmc";
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const std::string smt2_command = "write_smt2 -stbv -wires " + tempdir_name + "/problem" + (iter_num != 0? stringf("%d", iter_num) : "") + ".smt2";
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const std::string smtbmc_warning = "z3: WARNING:";
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const std::string smtbmc_cmd = yosys_smtbmc_exe + " -s " + (get_solver_name(opt)) + " -t 1 -g --binary " + (opt.dump_final_smt2? "--dump-smt2 " + opt.dump_final_smt2_file + " " : "") + tempdir_name + "/problem" + (iter_num != 0? stringf("%d", iter_num) : "") + ".smt2 2>&1";
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const std::string smtbmc_cmd = yosys_smtbmc_exe + " -s " + (get_solver_name(opt)) + (opt.timeout != 0? stringf(" --timeout %d", opt.timeout) : "") + " -t 1 -g --binary " + (opt.dump_final_smt2? "--dump-smt2 " + opt.dump_final_smt2_file + " " : "") + tempdir_name + "/problem" + (iter_num != 0? stringf("%d", iter_num) : "") + ".smt2 2>&1";
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Pass::call(mod->design, smt2_command);
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@ -344,14 +376,7 @@ QbfSolutionType call_qbf_solver(RTLIL::Module *mod, const QbfSolveOptions &opt,
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};
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log_header(mod->design, "Solving QBF-SAT problem.\n");
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if (!quiet) log("Launching \"%s\".\n", smtbmc_cmd.c_str());
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int retval = run_command(smtbmc_cmd, process_line);
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if (retval == 0) {
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ret.sat = true;
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ret.unknown = false;
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} else if (retval == 1) {
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ret.sat = false;
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ret.unknown = false;
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}
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run_command(smtbmc_cmd, process_line);
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recover_solution(ret);
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return ret;
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@ -514,6 +539,19 @@ QbfSolveOptions parse_args(const std::vector<std::string> &args) {
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}
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continue;
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}
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else if (args[opt.argidx] == "-timeout") {
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if (args.size() <= opt.argidx + 1)
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log_cmd_error("timeout not specified.\n");
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else {
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int timeout = atoi(args[opt.argidx+1].c_str());
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if (timeout > 0)
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opt.timeout = timeout;
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else
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log_cmd_error("timeout must be greater than 0.\n");
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opt.argidx++;
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}
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continue;
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}
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else if (args[opt.argidx] == "-sat") {
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opt.sat = true;
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continue;
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@ -625,6 +663,9 @@ struct QbfSatPass : public Pass {
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log(" -solver <solver>\n");
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log(" Use a particular solver. Choose one of: \"z3\", \"yices\", and \"cvc4\".\n");
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log("\n");
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log(" -timeout <value>\n");
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log(" Set the per-iteration timeout in seconds.\n");
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log("\n");
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log(" -sat\n");
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log(" Generate an error if the solver does not return \"sat\".\n");
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log("\n");
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@ -672,7 +713,6 @@ struct QbfSatPass : public Pass {
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QbfSolutionType ret = qbf_solve(module, opt);
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module = design->module(module_name);
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if (ret.unknown) {
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log_warning("solver did not give an answer\n");
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if (opt.sat || opt.unsat)
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log_cmd_error("expected problem to be %s\n", opt.sat? "SAT" : "UNSAT");
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}
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