Trace number 310864

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, and are wall clock time (not CPU 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 2007-02-08UNSAT 36.3495 36.3754

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
MD5SUM6c6574c6e53b7d1ef3d1cc6ac9e5dec3
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark9.15561
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

36.34/36.37	c MXC attempting /tmp/evaluation/310864-1172562416/instance-310864-1172562416.cnf
36.34/36.37	c 0 assignments made, starting to guess now
36.34/36.37	c ===================================[MXC]=====================================
36.34/36.37	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
36.34/36.37	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
36.34/36.37	c =============================================================================
36.34/36.37	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
36.34/36.37	c |       100 |    3221     9663 |    1180      99    2050    20.7 |  0.000 % |
36.34/36.37	c |       250 |    3221     9663 |    1298     248    4921    19.8 |  0.000 % |
36.34/36.37	c |       478 |    3221     9663 |    1428     474    8897    18.8 |  0.000 % |
36.34/36.37	c |       815 |    3221     9663 |    1570     807   13740    17.0 |  0.000 % |
36.34/36.37	c |      1321 |    3221     9663 |    1728    1312   23034    17.6 |  0.000 % |
36.34/36.37	c |      2080 |    3221     9663 |    1900    1204   22525    18.7 |  0.000 % |
36.34/36.37	c |      3221 |    3221     9663 |    2090    1393   25028    18.0 |  0.000 % |
36.34/36.37	c |      4929 |    3221     9663 |    2300    2052   36768    17.9 |  0.000 % |
36.34/36.37	c |      7491 |    3221     9663 |    2530    1163   20209    17.4 |  0.000 % |
36.34/36.37	c |     11335 |    3221     9663 |    2783    2475   40147    16.2 |  0.000 % |
36.34/36.37	c |     17101 |    3221     9663 |    3061    2676   52423    19.6 |  0.000 % |
36.34/36.37	c |     25750 |    3221     9663 |    3367    2137   39214    18.4 |  0.000 % |
36.34/36.37	c |     38726 |    3221     9663 |    3704    3340   58945    17.6 |  0.000 % |
36.34/36.37	c |     58187 |    3221     9663 |    4074    2440   41706    17.1 |  0.000 % |
36.34/36.37	c |     87379 |    3221     9663 |    4482    3122   53117    17.0 |  0.000 % |
36.34/36.37	c |    131169 |    3221     9663 |    4930    4378   75893    17.3 |  0.000 % |
36.34/36.37	c |    196853 |    3196     9588 |    5423    3513   65705    18.7 |  0.232 % |
36.34/36.37	c |    295379 |    3161     9483 |    5965    4419   74493    16.9 |  0.618 % |
36.34/36.37	c 36.350s elapsed
36.34/36.37	c restarts: 18
36.34/36.37	c decisions: 438045
36.34/36.37	c propagations: 60872824
36.34/36.37	c conflicts: 360976
36.34/36.37	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node44/watcher-310864-1172562416 -o ROOT/results/node44/solver-310864-1172562416 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310864-1172562416/mxc /tmp/evaluation/310864-1172562416/instance-310864-1172562416.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.92 0.98 0.99 3/64 27275
/proc/meminfo: memFree=1908280/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1200 CPUtime=0
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 170 0 0 0 0 0 0 0 18 0 1 0 276197733 1228800 154 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134775504 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 300 154 57 122 0 174 0

[startup+0.106052 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 27275
/proc/meminfo: memFree=1908280/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1332 CPUtime=0.1
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 205 0 0 0 10 0 0 0 18 0 1 0 276197733 1363968 189 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519549 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 333 189 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.514125 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 27275
/proc/meminfo: memFree=1908280/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1472 CPUtime=0.51
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 257 0 0 0 51 0 0 0 21 0 1 0 276197733 1507328 239 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531169 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 368 239 67 122 0 242 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1472

[startup+1.33428 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1907504/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1604 CPUtime=1.33
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 288 0 0 0 133 0 0 0 25 0 1 0 276197733 1642496 270 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 401 270 67 122 0 275 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1604

[startup+2.97057 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1907248/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1736 CPUtime=2.96
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 325 0 0 0 296 0 0 0 25 0 1 0 276197733 1777664 307 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519924 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 434 307 67 122 0 308 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1736

[startup+6.24917 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906992/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=1984 CPUtime=6.24
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 366 0 0 0 624 0 0 0 25 0 1 0 276197733 2031616 348 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519890 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 496 348 67 122 0 370 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1984

[startup+12.7024 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906744/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2108 CPUtime=12.69
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 418 0 0 0 1269 0 0 0 25 0 1 0 276197733 2158592 400 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519759 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 527 400 67 122 0 401 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2108

[startup+25.5037 s]
/proc/loadavg: 0.95 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906488/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2492 CPUtime=25.49
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 490 0 0 0 2549 0 0 0 25 0 1 0 276197733 2551808 472 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519964 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 623 472 67 122 0 497 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 2492

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

[startup+26.2218 s]
/proc/loadavg: 0.95 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906488/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2492 CPUtime=26.2
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 491 0 0 0 2620 0 0 0 25 0 1 0 276197733 2551808 473 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134528106 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 623 473 67 122 0 497 0
Current children cumulated CPU time (s) 26.2
Current children cumulated vsize (KiB) 2492

[startup+32.778 s]
/proc/loadavg: 0.95 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906360/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2492 CPUtime=32.76
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 515 0 0 0 3276 0 0 0 25 0 1 0 276197733 2551808 497 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 623 497 67 122 0 497 0
Current children cumulated CPU time (s) 32.76
Current children cumulated vsize (KiB) 2492

[startup+34.4143 s]
/proc/loadavg: 0.95 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906296/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2608 CPUtime=34.39
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 525 0 0 0 3439 0 0 0 25 0 1 0 276197733 2670592 507 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 652 507 67 122 0 526 0
Current children cumulated CPU time (s) 34.39
Current children cumulated vsize (KiB) 2608

[startup+35.2365 s]
/proc/loadavg: 0.96 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906296/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2608 CPUtime=35.21
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 525 0 0 0 3521 0 0 0 25 0 1 0 276197733 2670592 507 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529768 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 652 507 67 122 0 526 0
Current children cumulated CPU time (s) 35.21
Current children cumulated vsize (KiB) 2608

[startup+36.0536 s]
/proc/loadavg: 0.96 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906296/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2608 CPUtime=36.04
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 526 0 0 0 3604 0 0 0 25 0 1 0 276197733 2670592 508 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519924 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.04
Current children cumulated vsize (KiB) 2608

[startup+36.2607 s]
/proc/loadavg: 0.96 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906296/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2608 CPUtime=36.24
/proc/27275/stat : 27275 (mxc) R 27273 27275 26041 0 -1 4194304 526 0 0 0 3624 0 0 0 25 0 1 0 276197733 2670592 508 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519969 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.24
Current children cumulated vsize (KiB) 2608

[startup+36.3627 s]
/proc/loadavg: 0.96 0.98 0.99 2/65 27276
/proc/meminfo: memFree=1906296/2055920 swapFree=4183252/4192956
[pid=27275] ppid=27273 vsize=2608 CPUtime=36.34
/proc/27275/stat : 27275 (mxc) S 27273 27275 26041 0 -1 4194304 526 0 0 0 3634 0 0 0 25 0 1 0 276197733 2670592 508 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134550682 0 0 4096 0 0 0 0 17 1 0 0
/proc/27275/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.34
Current children cumulated vsize (KiB) 2608

Child status: 20
Real time (s): 36.3754
CPU time (s): 36.3495
CPU user time (s): 36.3455
CPU system time (s): 0.003999
CPU usage (%): 99.9287
Max. virtual memory (cumulated for all children) (KiB): 2608

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 36.3455
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 527
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= 8
involuntary context switches= 73

runsolver used 0.031995 second user time and 0.072988 second system time

The end

Launcher Data (download as text)

Begin job on node44 on Tue Feb 27 07:46:56 UTC 2007

IDJOB= 310864
IDBENCH= 20298
IDSOLVER= 107
FILE ID= node44/310864-1172562416

PBS_JOBID= 3971860

Free space on /tmp= 66554 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310864-1172562416/mxc /tmp/evaluation/310864-1172562416/instance-310864-1172562416.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node44/watcher-310864-1172562416 -o ROOT/results/node44/solver-310864-1172562416 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310864-1172562416/mxc /tmp/evaluation/310864-1172562416/instance-310864-1172562416.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  6c6574c6e53b7d1ef3d1cc6ac9e5dec3

RANDOM SEED= 997729737

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node44.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.261
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		: 3000.261
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:       1908752 kB
Buffers:         19388 kB
Cached:          81200 kB
SwapCached:       3996 kB
Active:          35148 kB
Inactive:        75436 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1908752 kB
SwapTotal:     4192956 kB
SwapFree:      4183252 kB
Dirty:             648 kB
Writeback:           0 kB
Mapped:          15380 kB
Slab:            22612 kB
Committed_AS:   562380 kB
PageTables:       1396 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= 66554 MiB

End job on node44 on Tue Feb 27 07:47:33 UTC 2007