Trace number 1784149

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 2009-03-10UNSAT 1.10683 1.10782

General information on the benchmark

NameCRAFTED/sgen/unsat/
sgen1-unsat-61-100.cnf
MD5SUM43b8e7efe061e21db6b4c047915ae87c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.10683
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.10/1.10	c starting MXC with:
1.10/1.10	c cnf_path = HOME/instance-1784149-1241919845.cnf
1.10/1.10	c restart_strategy = auto
1.10/1.10	c sign_strategy = cached
1.10/1.10	c use_preprocessing = -1
1.10/1.10	c output_implicant = 1
1.10/1.10	c timeout_seconds = 0
1.10/1.10	c running SatELite... done
1.10/1.10	c 1 vars eliminated
1.10/1.10	c received 0 units and 132 clauses from SatELite
1.10/1.10	c 0 assignments made, starting to guess now
1.10/1.10	c ===================================[MXC]=====================================
1.10/1.10	c | Conflicts |                Clause Statistics                   |   Vars   |
1.10/1.10	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.10/1.10	c =============================================================================
1.10/1.10	c |         0 |       0       0      132        0        0     nan |       61 |
1.10/1.10	c |       100 |       0       0      132      100     1050    11.5 |       61 |
1.10/1.10	c |       210 |       0       0      132      210     1105    12.0 |       61 |
1.10/1.10	c |       441 |       0       0      132      441     1220    13.1 |       61 |
1.10/1.10	c |       805 |       0       0      132      805     1402    12.8 |       61 |
1.10/1.10	c |      1315 |       0       0      132     1315     1609    12.8 |       61 |
1.10/1.10	c |      1986 |       0       0      132     1138     1754    11.6 |       61 |
1.10/1.10	c |      2834 |       0       0      132     1046     1894    11.9 |       61 |
1.10/1.10	c |      3876 |       0       0      132     1078     2031    11.6 |       61 |
1.10/1.10	c |      5132 |       0       0      132     1262     2163    10.2 |       61 |
1.10/1.10	c |      6623 |       0       0      132     1628     2292     9.5 |       61 |
1.10/1.10	c |      8373 |       0       0      132     2204     2419     9.3 |       61 |
1.10/1.10	c |     10408 |       0       0      132     1765     2543     8.5 |       61 |
1.10/1.10	c |     12756 |       0       0      132     1492     2665     8.7 |       61 |
1.10/1.10	c |     15449 |       0       1      132     1431     2786     8.3 |       61 |
1.10/1.10	c |     18521 |       0       1      132     1631     2906     8.8 |       61 |
1.10/1.10	c |     22010 |       0       2      132     2139     3025     8.4 |       61 |
1.10/1.10	c |     25958 |       0       3      132     3009     3144     8.3 |       61 |
1.10/1.10	c |     30411 |       0      13      132     2664     3262     8.4 |       60 |
1.10/1.10	c |     35419 |       0      13      132     2697     3381     8.5 |       60 |
1.10/1.10	c |     41038 |       0      15      132     3166     3499     8.4 |       60 |
1.10/1.10	c |     47329 |       0      25      132     2332     3618     9.0 |       59 |
1.10/1.10	c |     54360 |       0      36      132     1973     3737     7.1 |       58 |
1.10/1.10	c |     57439 |       0      89      132     3103     3786     6.5 |       20 |
1.10/1.10	c ----- stats for thread 0 -----
1.10/1.10	c restarts: 8
1.10/1.10	c decisions: 76922
1.10/1.10	c propagations: 1008502
1.10/1.10	c conflicts: 57439
1.10/1.10	c 1.107s elapsed
1.10/1.10	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1784149-1241919845/watcher-1784149-1241919845 -o /tmp/evaluation-result-1784149-1241919845/solver-1784149-1241919845 -C 5000 -W 6000 -M 1800 HOME/mxc-sat09 -i HOME/instance-1784149-1241919845.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 25822
/proc/meminfo: memFree=1873584/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=844 CPUtime=0
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 116 0 0 0 0 0 0 0 18 0 1 0 220017999 864256 102 1992294400 134512640 135192793 4294956224 18446744073709551615 134604365 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 211 103 71 166 0 42 0

[startup+0.026793 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 25822
/proc/meminfo: memFree=1873584/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=1108 CPUtime=0.02
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 180 0 0 0 2 0 0 0 18 0 1 0 220017999 1134592 166 1992294400 134512640 135192793 4294956224 18446744073709551615 134520591 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 277 166 72 166 0 108 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1108

[startup+0.1018 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 25822
/proc/meminfo: memFree=1873584/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=1240 CPUtime=0.09
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 218 0 0 0 9 0 0 0 18 0 1 0 220017999 1269760 204 1992294400 134512640 135192793 4294956224 18446744073709551615 134532632 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 310 204 72 166 0 141 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1240

[startup+0.30182 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 25822
/proc/meminfo: memFree=1873584/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=1508 CPUtime=0.29
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 274 0 0 0 29 0 0 0 19 0 1 0 220017999 1544192 260 1992294400 134512640 135192793 4294956224 18446744073709551615 134550392 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 377 260 72 166 0 208 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1508

[startup+0.701862 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 25822
/proc/meminfo: memFree=1873584/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=1652 CPUtime=0.69
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 325 0 0 0 69 0 0 0 22 0 1 0 220017999 1691648 311 1992294400 134512640 135192793 4294956224 18446744073709551615 134520473 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 413 311 72 166 0 244 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1652

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

[startup+1.1059 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 25823
/proc/meminfo: memFree=1872488/2055920 swapFree=4180188/4192956
[pid=25822] ppid=25820 vsize=1920 CPUtime=1.1
/proc/25822/stat : 25822 (mxc-sat09) R 25820 25822 25690 0 -1 4194304 365 0 0 0 110 0 0 0 25 0 1 0 220017999 1966080 351 1992294400 134512640 135192793 4294956224 18446744073709551615 134534128 0 0 4096 0 0 0 0 17 1 0 0
/proc/25822/statm: 480 351 72 166 0 311 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 1920

Child status: 20
Real time (s): 1.10782
CPU time (s): 1.10683
CPU user time (s): 1.10383
CPU system time (s): 0.002999
CPU usage (%): 99.9107
Max. virtual memory (cumulated for all children) (KiB): 1920

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.10383
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 368
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= 2
involuntary context switches= 2

runsolver used 0.004999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node24 at 2009-05-10 03:44:05
IDJOB=1784149
IDBENCH=71108
IDSOLVER=613
FILE ID=node24/1784149-1241919845
PBS_JOBID= 9264873
Free space on /tmp= 66316 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT09/CRAFTED/sgen/unsat/sgen1-unsat-61-100.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1784149-1241919845/watcher-1784149-1241919845 -o /tmp/evaluation-result-1784149-1241919845/solver-1784149-1241919845 -C 5000 -W 6000 -M 1800  HOME/mxc-sat09 -i HOME/instance-1784149-1241919845.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 43b8e7efe061e21db6b4c047915ae87c
RANDOM SEED=232939069

node24.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		: 3000.232
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		: 3000.232
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1874064 kB
Buffers:         47172 kB
Cached:          87616 kB
SwapCached:       7060 kB
Active:          56324 kB
Inactive:        87512 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1874064 kB
SwapTotal:     4192956 kB
SwapFree:      4180188 kB
Dirty:             896 kB
Writeback:           0 kB
Mapped:          14012 kB
Slab:            23916 kB
Committed_AS:   737284 kB
PageTables:       1440 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66316 MiB
End job on node24 at 2009-05-10 03:44:06