Trace number 1736495

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
MXC 2009-03-10SAT 0.043993 0.0437421

General information on the benchmark

NameCRAFTED/parity-games/
instance_n4_i4_pp.cnf
MD5SUMd35b54498d8d9672e60bf7e3ce33352b
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.022995
Satisfiable
(Un)Satisfiability was proved
Number of variables1572
Number of clauses9007
Sum of the clauses size28496
Maximum clause length12
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22356
Number of clauses of size 33596
Number of clauses of size 42300
Number of clauses of size 5752
Number of clauses of size over 53

Solver Data 

0.00/0.04	c starting MXC with:
0.00/0.04	c cnf_path = HOME/instance-1736495-1240811870.cnf
0.00/0.04	c restart_strategy = auto
0.00/0.04	c sign_strategy = cached
0.00/0.04	c use_preprocessing = -1
0.00/0.04	c output_implicant = 1
0.00/0.04	c timeout_seconds = 0
0.00/0.04	c running SatELite... done
0.00/0.04	c 618 vars eliminated
0.00/0.04	c received 64 units and 6211 clauses from SatELite
0.00/0.04	c 681 assignments made, starting to guess now
0.00/0.04	c ===================================[MXC]=====================================
0.00/0.04	c | Conflicts |                Clause Statistics                   |   Vars   |
0.00/0.04	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
0.00/0.04	c =============================================================================
0.00/0.04	c |         0 |       0    1108     5103        0        0     nan |     1572 |
0.00/0.04	c |       100 |       0    1109     5103       99     1050    10.4 |      891 |
0.00/0.04	c |       101 |       0    1109     5103      100     1050    10.3 |      891 |
0.00/0.04	c ----- stats for thread 0 -----
0.00/0.04	c restarts: 1
0.00/0.04	c decisions: 364
0.00/0.04	c propagations: 12520
0.00/0.04	c conflicts: 101
0.00/0.04	c 0.042s elapsed
0.00/0.04	s SATISFIABLE
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Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1736495-1240811870/watcher-1736495-1240811870 -o /tmp/evaluation-result-1736495-1240811870/solver-1736495-1240811870 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1736495-1240811870.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.93 1.00 1.04 3/65 10616
/proc/meminfo: memFree=1687608/2055920 swapFree=4191900/4192956
[pid=10616] ppid=10614 vsize=1544 CPUtime=0
/proc/10616/stat : 10616 (mxc-sat09) R 10614 10616 10212 0 -1 4194304 256 0 0 0 0 0 0 0 20 0 1 0 109215985 1581056 242 1992294400 134512640 135192793 4294956208 18446744073709551615 134766703 0 0 4096 0 0 0 0 17 1 0 0
/proc/10616/statm: 386 243 54 166 0 217 0

[startup+0.0115151 s]
/proc/loadavg: 0.93 1.00 1.04 3/65 10616
/proc/meminfo: memFree=1687608/2055920 swapFree=4191900/4192956
[pid=10616] ppid=10614 vsize=1684 CPUtime=0
/proc/10616/stat : 10616 (mxc-sat09) R 10614 10616 10212 0 -1 4194304 339 0 0 0 0 0 0 0 20 0 1 0 109215985 1724416 287 1992294400 134512640 135192793 4294956208 18446744073709551615 134565339 0 0 4096 0 0 0 0 17 1 0 0
/proc/10616/statm: 421 287 56 166 0 252 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1684

Solver just ended. Dumping a history of the last processes samples

[startup+0.0115151 s]
/proc/loadavg: 0.93 1.00 1.04 3/65 10616
/proc/meminfo: memFree=1687608/2055920 swapFree=4191900/4192956
[pid=10616] ppid=10614 vsize=1684 CPUtime=0
/proc/10616/stat : 10616 (mxc-sat09) R 10614 10616 10212 0 -1 4194304 339 0 0 0 0 0 0 0 20 0 1 0 109215985 1724416 287 1992294400 134512640 135192793 4294956208 18446744073709551615 134565339 0 0 4096 0 0 0 0 17 1 0 0
/proc/10616/statm: 421 287 56 166 0 252 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1684

Child status: 10
Real time (s): 0.0437421
CPU time (s): 0.043993
CPU user time (s): 0.037994
CPU system time (s): 0.005999
CPU usage (%): 100.574
Max. virtual memory (cumulated for all children) (KiB): 1684

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.037994
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 551
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 5
involuntary context switches= 0

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node91 at 2009-04-27 07:57:50
IDJOB=1736495
IDBENCH=71627
IDSOLVER=504
FILE ID=node91/1736495-1240811870
PBS_JOBID= 9187427
Free space on /tmp= 66560 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT09/CRAFTED/parity-games/instance_n4_i4_pp.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1736495-1240811870/watcher-1736495-1240811870 -o /tmp/evaluation-result-1736495-1240811870/solver-1736495-1240811870 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1736495-1240811870.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= d35b54498d8d9672e60bf7e3ce33352b
RANDOM SEED=1304897961

node91.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.241
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.241
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1688024 kB
Buffers:         49368 kB
Cached:         237820 kB
SwapCached:        384 kB
Active:         122560 kB
Inactive:       178656 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1688024 kB
SwapTotal:     4192956 kB
SwapFree:      4191900 kB
Dirty:            1048 kB
Writeback:           0 kB
Mapped:          22436 kB
Slab:            52528 kB
Committed_AS:   334824 kB
PageTables:       1356 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66560 MiB
End job on node91 at 2009-04-27 07:57:50