Trace number 1723717

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 1.3248 1.32526

General information on the benchmark

Namemanol-pipe-g6bi.cnf
MD5SUM276c05fafaa0b870834db9baaef6afca
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.883865
Satisfiable
(Un)Satisfiability was proved
Number of variables23891
Number of clauses69895
Sum of the clauses size163087
Maximum clause length3
Minimum clause length1
Number of clauses of size 11
Number of clauses of size 246596
Number of clauses of size 323298
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.29/1.32	c starting MXC with:
1.29/1.32	c cnf_path = HOME/instance-1723717-1240688381.cnf
1.29/1.32	c restart_strategy = auto
1.29/1.32	c sign_strategy = cached
1.29/1.32	c use_preprocessing = -1
1.29/1.32	c output_implicant = 1
1.29/1.32	c timeout_seconds = 0
1.29/1.32	c running SatELite... done
1.29/1.32	c 18801 vars eliminated
1.29/1.32	c received 1 units and 30521 clauses from SatELite
1.29/1.32	c 18801 assignments made, starting to guess now
1.29/1.32	c ===================================[MXC]=====================================
1.29/1.32	c | Conflicts |                Clause Statistics                   |   Vars   |
1.29/1.32	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.29/1.32	c =============================================================================
1.29/1.32	c |         0 |       0    5233    25288        0        0     nan |    23891 |
1.29/1.32	c |       100 |       0    5187    24704       96     1050    11.6 |     5046 |
1.29/1.32	c |       210 |       0    5191    24704      202     1105    10.9 |     5046 |
1.29/1.32	c |       441 |       0    5186    24686      429     1220    12.1 |     5043 |
1.29/1.32	c |       805 |       0    5198    24675      758     1402    12.6 |     5042 |
1.29/1.32	c |      1315 |       0    5209    24675     1257     1657    15.7 |     5042 |
1.29/1.32	c |      1986 |       0    5220    24675     1917     1993    15.7 |     5042 |
1.29/1.32	c |      2834 |       0    5136    23799     1611     2417    15.6 |     4944 |
1.29/1.32	c |      3876 |       0    5138    23799     2651     2938    16.5 |     4944 |
1.29/1.32	c |      5132 |       0    5141    23799     2292     3566    15.9 |     4944 |
1.29/1.32	c |      6623 |       0    5153    23799     3771     4311    16.7 |     4944 |
1.29/1.32	c |      8373 |       0    5157    23799     3110     5186    18.0 |     4944 |
1.29/1.32	c |     10408 |       0    5179    23799     5123     6204    16.1 |     4944 |
1.29/1.32	c |     12592 |       0    5209    23799     7270     7296    14.2 |     4914 |
1.29/1.32	c ----- stats for thread 0 -----
1.29/1.32	c restarts: 78
1.29/1.32	c decisions: 55043
1.29/1.32	c propagations: 1236455
1.29/1.32	c conflicts: 12592
1.29/1.32	c 1.320s elapsed
1.29/1.32	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-1723717-1240688381/watcher-1723717-1240688381 -o /tmp/evaluation-result-1723717-1240688381/solver-1723717-1240688381 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1723717-1240688381.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: 1.27 1.20 1.08 3/65 18824
/proc/meminfo: memFree=1732768/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=4256 CPUtime=0
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 770 0 0 0 0 0 0 0 20 0 1 0 96868188 4358144 756 1992294400 134512640 135192793 4294956208 18446744073709551615 134527968 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 1064 762 50 166 0 895 0

[startup+0.0286819 s]
/proc/loadavg: 1.27 1.20 1.08 3/65 18824
/proc/meminfo: memFree=1732768/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=8712 CPUtime=0.02
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 1714 0 0 0 2 0 0 0 20 0 1 0 96868188 8921088 1700 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 2178 1701 54 166 0 2009 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 8712

[startup+0.102689 s]
/proc/loadavg: 1.27 1.20 1.08 3/65 18824
/proc/meminfo: memFree=1732768/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=11392 CPUtime=0.1
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 2631 0 0 0 9 1 0 0 20 0 1 0 96868188 11665408 2346 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 2848 2346 56 166 0 2679 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 11392

[startup+0.30271 s]
/proc/loadavg: 1.27 1.20 1.08 3/65 18824
/proc/meminfo: memFree=1732768/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=17032 CPUtime=0.29
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 4054 0 0 0 28 1 0 0 22 0 1 0 96868188 17440768 3769 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 4258 3769 56 166 0 4089 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 17032

[startup+0.702762 s]
/proc/loadavg: 1.27 1.20 1.08 3/65 18824
/proc/meminfo: memFree=1732768/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=18420 CPUtime=0.69
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 4699 0 0 0 68 1 0 0 25 0 1 0 96868188 18862080 4173 1992294400 134512640 135192793 4294956208 18446744073709551615 134533917 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 4605 4173 73 166 0 4436 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 18420

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

[startup+1.1058 s]
/proc/loadavg: 1.27 1.20 1.08 2/66 18825
/proc/meminfo: memFree=1715992/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=19080 CPUtime=1.09
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 4842 0 0 0 108 1 0 0 25 0 1 0 96868188 19537920 4316 1992294400 134512640 135192793 4294956208 18446744073709551615 134553594 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 4770 4316 73 166 0 4601 0
Current children cumulated CPU time (s) 1.09
Current children cumulated vsize (KiB) 19080

[startup+1.30182 s]
/proc/loadavg: 1.27 1.20 1.08 2/66 18825
/proc/meminfo: memFree=1715992/2055920 swapFree=4192192/4192956
[pid=18824] ppid=18822 vsize=19484 CPUtime=1.29
/proc/18824/stat : 18824 (mxc-sat09) R 18822 18824 18319 0 -1 4194304 4944 0 0 0 128 1 0 0 25 0 1 0 96868188 19951616 4418 1992294400 134512640 135192793 4294956208 18446744073709551615 134534215 0 0 4096 0 0 0 0 17 1 0 0
/proc/18824/statm: 4871 4418 73 166 0 4702 0
Current children cumulated CPU time (s) 1.29
Current children cumulated vsize (KiB) 19484

Child status: 20
Real time (s): 1.32526
CPU time (s): 1.3248
CPU user time (s): 1.3028
CPU system time (s): 0.021996
CPU usage (%): 99.9652
Max. virtual memory (cumulated for all children) (KiB): 19484

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.3028
system time used= 0.021996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4958
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 0.002999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node76 at 2009-04-25 21:39:41
IDJOB=1723717
IDBENCH=71734
IDSOLVER=504
FILE ID=node76/1723717-1240688381
PBS_JOBID= 9186688
Free space on /tmp= 66200 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT_RACE06/manol-pipe-g6bi.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1723717-1240688381/watcher-1723717-1240688381 -o /tmp/evaluation-result-1723717-1240688381/solver-1723717-1240688381 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1723717-1240688381.cnf

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

MD5SUM BENCH= 276c05fafaa0b870834db9baaef6afca
RANDOM SEED=1226170620

node76.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		: 3000.220
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		: 3000.220
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:       1733248 kB
Buffers:         29800 kB
Cached:         232468 kB
SwapCached:        620 kB
Active:          99332 kB
Inactive:       176764 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1733248 kB
SwapTotal:     4192956 kB
SwapFree:      4192192 kB
Dirty:            1908 kB
Writeback:           0 kB
Mapped:          22400 kB
Slab:            32468 kB
Committed_AS:   312964 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= 66200 MiB
End job on node76 at 2009-04-25 21:39:42