1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/******************************************************************************
* Top contributors (to current version):
* Kshitij Bansal, Andrew Reynolds, Morgan Deters
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* An additional layer between commands and invoking them.
*/
#include "main/command_executor.h"
#ifndef __WIN32__
# include <sys/resource.h>
#endif /* ! __WIN32__ */
#include <iomanip>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include "main/main.h"
#include "smt/command.h"
#include "smt/solver_engine.h"
namespace cvc5 {
namespace main {
// Function to cancel any (externally-imposed) limit on CPU time.
// This is used for competitions while a solution (proof or model)
// is being dumped (so that we don't give "sat" or "unsat" then get
// interrupted partway through outputting a proof!).
void setNoLimitCPU() {
// Windows doesn't have these things, just ignore
#ifndef __WIN32__
struct rlimit rlc;
int st = getrlimit(RLIMIT_CPU, &rlc);
if(st == 0) {
rlc.rlim_cur = rlc.rlim_max;
setrlimit(RLIMIT_CPU, &rlc);
}
#endif /* ! __WIN32__ */
}
CommandExecutor::CommandExecutor(std::unique_ptr<api::Solver>& solver)
: d_solver(solver),
d_symman(new SymbolManager(d_solver.get())),
d_result()
{
}
CommandExecutor::~CommandExecutor()
{
}
void CommandExecutor::storeOptionsAsOriginal()
{
d_solver->d_originalOptions->copyValues(d_solver->d_slv->getOptions());
}
void CommandExecutor::printStatistics(std::ostream& out) const
{
if (d_solver->getOptionInfo("stats").boolValue())
{
const auto& stats = d_solver->getStatistics();
auto it = stats.begin(d_solver->getOptionInfo("stats-expert").boolValue(),
d_solver->getOptionInfo("stats-all").boolValue());
for (; it != stats.end(); ++it)
{
out << it->first << " = " << it->second << std::endl;
}
}
}
void CommandExecutor::printStatisticsSafe(int fd) const
{
if (d_solver->getOptionInfo("stats").boolValue())
{
d_solver->printStatisticsSafe(fd);
}
}
bool CommandExecutor::doCommand(Command* cmd)
{
CommandSequence *seq = dynamic_cast<CommandSequence*>(cmd);
if(seq != nullptr) {
// assume no error
bool status = true;
for (CommandSequence::iterator subcmd = seq->begin();
status && subcmd != seq->end();
++subcmd)
{
status = doCommand(*subcmd);
}
return status;
} else {
if (d_solver->getOptionInfo("verbosity").intValue() > 2)
{
d_solver->getDriverOptions().out() << "Invoking: " << *cmd << std::endl;
}
return doCommandSingleton(cmd);
}
}
void CommandExecutor::reset()
{
printStatistics(d_solver->getDriverOptions().err());
Command::resetSolver(d_solver.get());
}
bool CommandExecutor::doCommandSingleton(Command* cmd)
{
bool status = solverInvoke(
d_solver.get(), d_symman.get(), cmd, d_solver->getDriverOptions().out());
api::Result res;
const CheckSatCommand* cs = dynamic_cast<const CheckSatCommand*>(cmd);
if(cs != nullptr) {
d_result = res = cs->getResult();
}
const CheckSatAssumingCommand* csa =
dynamic_cast<const CheckSatAssumingCommand*>(cmd);
if (csa != nullptr)
{
d_result = res = csa->getResult();
}
const QueryCommand* q = dynamic_cast<const QueryCommand*>(cmd);
if(q != nullptr) {
d_result = res = q->getResult();
}
bool isResultUnsat = res.isUnsat() || res.isEntailed();
bool isResultSat = res.isSat() || res.isNotEntailed();
// dump the model/proof/unsat core if option is set
if (status) {
std::vector<std::unique_ptr<Command> > getterCommands;
if (d_solver->getOptionInfo("dump-models").boolValue()
&& (isResultSat
|| (res.isSatUnknown()
&& res.getUnknownExplanation() == api::Result::INCOMPLETE)))
{
getterCommands.emplace_back(new GetModelCommand());
}
if (d_solver->getOptionInfo("dump-proofs").boolValue() && isResultUnsat)
{
getterCommands.emplace_back(new GetProofCommand());
}
if ((d_solver->getOptionInfo("dump-instantiations").boolValue()
|| d_solver->getOptionInfo("dump-instantiations-debug").boolValue())
&& GetInstantiationsCommand::isEnabled(d_solver.get(), res))
{
getterCommands.emplace_back(new GetInstantiationsCommand());
}
if (d_solver->getOptionInfo("dump-unsat-cores").boolValue()
&& isResultUnsat)
{
getterCommands.emplace_back(new GetUnsatCoreCommand());
}
if (d_solver->getOptionInfo("dump-difficulty").boolValue()
&& (isResultUnsat || isResultSat || res.isSatUnknown()))
{
getterCommands.emplace_back(new GetDifficultyCommand());
}
if (!getterCommands.empty()) {
// set no time limit during dumping if applicable
if (d_solver->getOptionInfo("force-no-limit-cpu-while-dump").boolValue())
{
setNoLimitCPU();
}
for (const auto& getterCommand : getterCommands) {
status = doCommandSingleton(getterCommand.get());
if (!status)
{
break;
}
}
}
}
return status;
}
bool solverInvoke(api::Solver* solver,
SymbolManager* sm,
Command* cmd,
std::ostream& out)
{
// print output for -o raw-benchmark
if (solver->isOutputOn("raw-benchmark"))
{
std::ostream& ss = solver->getOutput("raw-benchmark");
cmd->toStream(ss);
}
// In parse-only mode, we do not invoke any of the commands except define-fun
// commands. We invoke define-fun commands because they add function names
// to the symbol table.
if (solver->getOptionInfo("parse-only").boolValue()
&& dynamic_cast<DefineFunctionCommand*>(cmd) == nullptr)
{
return true;
}
cmd->invoke(solver, sm, out);
// ignore the error if the command-verbosity is 0 for this command
std::string commandName =
std::string("command-verbosity:") + cmd->getCommandName();
if (solver->getOption(commandName) == "0")
{
return true;
}
return !cmd->fail();
}
void CommandExecutor::flushOutputStreams() {
printStatistics(d_solver->getDriverOptions().err());
// make sure out and err streams are flushed too
d_solver->getDriverOptions().out() << std::flush;
d_solver->getDriverOptions().err() << std::flush;
}
} // namespace main
} // namespace cvc5
|
