Trace number 1773397

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 1.14083 1.14175

General information on the benchmark

Namehoons-vbmc-lucky7.cnf
MD5SUMe05028f569e580a3335aeab2d092cf1f
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.14083
Satisfiable
(Un)Satisfiability was proved
Number of variables8503
Number of clauses25116
Sum of the clauses size58576
Maximum clause length3
Minimum clause length1
Number of clauses of size 121
Number of clauses of size 216730
Number of clauses of size 38365
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.10/1.14	c starting MXC with:
1.10/1.14	c cnf_path = HOME/instance-1773397-1241299586.cnf
1.10/1.14	c restart_strategy = auto
1.10/1.14	c sign_strategy = cached
1.10/1.14	c use_preprocessing = -1
1.10/1.14	c output_implicant = 1
1.10/1.14	c timeout_seconds = 0
1.10/1.14	c running SatELite... done
1.10/1.14	c 6427 vars eliminated
1.10/1.14	c received 294 units and 10059 clauses from SatELite
1.10/1.14	c 6720 assignments made, starting to guess now
1.10/1.14	c ===================================[MXC]=====================================
1.10/1.14	c | Conflicts |                Clause Statistics                   |   Vars   |
1.10/1.14	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.10/1.14	c =============================================================================
1.10/1.14	c |         0 |       0    2431     7628        0        0     nan |     8503 |
1.10/1.14	c |       100 |       0    2432     7628       99     1050     7.0 |     1783 |
1.10/1.14	c |       210 |       0    2391     7526      204     1105     7.3 |     1761 |
1.10/1.14	c |       441 |       0    2395     7329      423     1220     9.5 |     1736 |
1.10/1.14	c |       805 |       0    2405     7296      768     1402    10.2 |     1733 |
1.10/1.14	c |      1315 |       0    2410     7257     1263     1657     9.9 |     1728 |
1.10/1.14	c |      1986 |       0    2417     7225     1918     1993     9.8 |     1723 |
1.10/1.14	c |      2834 |       0    2430     7203     1745     2417     9.2 |     1721 |
1.10/1.14	c |      3876 |       0    2437     7190     2749     2938    10.2 |     1720 |
1.10/1.14	c |      5132 |       0    2438     7160     2436     3566    10.3 |     1717 |
1.10/1.14	c |      6623 |       0    2450     7142     3813     4311    10.9 |     1715 |
1.10/1.14	c |      8373 |       0    2454     7134     3149     5186    13.1 |     1714 |
1.10/1.14	c |     10408 |       0    2448     7127     5178     6204    14.1 |     1713 |
1.10/1.14	c |     12756 |       0    1980     5494     1594     7378    11.6 |     1340 |
1.10/1.14	c |     12877 |       0    1993     5494     1696     6140    11.4 |     1286 |
1.10/1.14	c ----- stats for thread 0 -----
1.10/1.14	c restarts: 76
1.10/1.14	c decisions: 27027
1.10/1.14	c propagations: 1720169
1.10/1.14	c conflicts: 12877
1.10/1.14	c 1.139s elapsed
1.10/1.14	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-1773397-1241299586/watcher-1773397-1241299586 -o /tmp/evaluation-result-1773397-1241299586/solver-1773397-1241299586 -C 10000 -W 12000 -M 1800 HOME/mxc-sat09 -i HOME/instance-1773397-1241299586.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 10000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 10030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 12000 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 1.68 2.83 3/64 2214
/proc/meminfo: memFree=1920120/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=3588 CPUtime=0
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 561 0 0 0 0 0 0 0 18 0 1 0 157986995 3674112 547 1992294400 134512640 135192793 4294956224 18446744073709551615 134569157 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 897 549 53 166 0 728 0

[startup+0.0451201 s]
/proc/loadavg: 1.00 1.68 2.83 3/64 2214
/proc/meminfo: memFree=1920120/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=5492 CPUtime=0.03
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 1077 0 0 0 3 0 0 0 18 0 1 0 157986995 5623808 971 1992294400 134512640 135192793 4294956224 18446744073709551615 134577000 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 1373 971 56 166 0 1204 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 5492

[startup+0.101127 s]
/proc/loadavg: 1.00 1.68 2.83 3/64 2214
/proc/meminfo: memFree=1920120/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=7116 CPUtime=0.09
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 1489 0 0 0 9 0 0 0 18 0 1 0 157986995 7286784 1383 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 1779 1383 56 166 0 1610 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7116

[startup+0.301156 s]
/proc/loadavg: 1.00 1.68 2.83 3/64 2214
/proc/meminfo: memFree=1920120/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=7368 CPUtime=0.29
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 1711 0 0 0 29 0 0 0 19 0 1 0 157986995 7544832 1512 1992294400 134512640 135192793 4294956224 18446744073709551615 134534231 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 1842 1512 73 166 0 1673 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 7368

[startup+0.701214 s]
/proc/loadavg: 1.00 1.68 2.83 3/64 2214
/proc/meminfo: memFree=1920120/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=7908 CPUtime=0.68
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 1842 0 0 0 68 0 0 0 22 0 1 0 157986995 8097792 1643 1992294400 134512640 135192793 4294956224 18446744073709551615 134534215 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 1977 1643 73 166 0 1808 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 7908

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

[startup+1.10527 s]
/proc/loadavg: 1.00 1.67 2.82 2/65 2215
/proc/meminfo: memFree=1913392/2055920 swapFree=4181288/4192956
[pid=2214] ppid=2210 vsize=8576 CPUtime=1.1
/proc/2214/stat : 2214 (mxc-sat09) R 2210 2214 2143 0 -1 4194304 1988 0 0 0 109 1 0 0 25 0 1 0 157986995 8781824 1789 1992294400 134512640 135192793 4294956224 18446744073709551615 134549692 0 0 4096 0 0 0 0 17 1 0 0
/proc/2214/statm: 2144 1789 73 166 0 1975 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 8576

Child status: 20
Real time (s): 1.14175
CPU time (s): 1.14083
CPU user time (s): 1.12783
CPU system time (s): 0.012998
CPU usage (%): 99.9193
Max. virtual memory (cumulated for all children) (KiB): 8576

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.12783
system time used= 0.012998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1991
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= 1

runsolver used 0.003999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node39 at 2009-05-02 23:26:26
IDJOB=1773397
IDBENCH=69576
IDSOLVER=613
FILE ID=node39/1773397-1241299586
PBS_JOBID= 9225196
Free space on /tmp= 66556 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT_RACE08/cnf/hoons-vbmc-lucky7.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773397-1241299586/watcher-1773397-1241299586 -o /tmp/evaluation-result-1773397-1241299586/solver-1773397-1241299586 -C 10000 -W 12000 -M 1800  HOME/mxc-sat09 -i HOME/instance-1773397-1241299586.cnf

TIME LIMIT= 10000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= e05028f569e580a3335aeab2d092cf1f
RANDOM SEED=683128553

node39.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		: 3000.281
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		: 3000.281
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:       1920600 kB
Buffers:          8396 kB
Cached:          69524 kB
SwapCached:       5788 kB
Active:          23244 kB
Inactive:        62908 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1920600 kB
SwapTotal:     4192956 kB
SwapFree:      4181288 kB
Dirty:            1116 kB
Writeback:           0 kB
Mapped:          13516 kB
Slab:            35220 kB
Committed_AS:   774152 kB
PageTables:       1404 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= 66552 MiB
End job on node39 at 2009-05-02 23:26:27