Trace number 427035

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 36.6204 36.6442

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 benchmark9.96448
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)

36.58/36.64	c MXC attempting /tmp/evaluation/427035-1177831533/instance-427035-1177831533.cnf
36.58/36.64	c 0 assignments made, starting to guess now
36.58/36.64	c ===================================[MXC]=====================================
36.58/36.64	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
36.58/36.64	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
36.58/36.64	c =============================================================================
36.58/36.64	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
36.58/36.64	c |       100 |    3221     9663 |    1180      99    2050    20.7 |  0.000 % |
36.58/36.64	c |       250 |    3221     9663 |    1298     248    4921    19.8 |  0.000 % |
36.58/36.64	c |       478 |    3221     9663 |    1428     474    8897    18.8 |  0.000 % |
36.58/36.64	c |       815 |    3221     9663 |    1570     807   13740    17.0 |  0.000 % |
36.58/36.64	c |      1321 |    3221     9663 |    1728    1312   23034    17.6 |  0.000 % |
36.58/36.64	c |      2080 |    3221     9663 |    1900    1204   22525    18.7 |  0.000 % |
36.58/36.64	c |      3221 |    3221     9663 |    2090    1393   25028    18.0 |  0.000 % |
36.58/36.64	c |      4929 |    3221     9663 |    2300    2052   36768    17.9 |  0.000 % |
36.58/36.64	c |      7491 |    3221     9663 |    2530    1163   20209    17.4 |  0.000 % |
36.58/36.64	c |     11335 |    3221     9663 |    2783    2475   40147    16.2 |  0.000 % |
36.58/36.64	c |     17101 |    3221     9663 |    3061    2676   52423    19.6 |  0.000 % |
36.58/36.64	c |     25750 |    3221     9663 |    3367    2137   39214    18.4 |  0.000 % |
36.58/36.64	c |     38726 |    3221     9663 |    3704    3340   58945    17.6 |  0.000 % |
36.58/36.64	c |     58187 |    3221     9663 |    4074    2440   41706    17.1 |  0.000 % |
36.58/36.64	c |     87379 |    3221     9663 |    4482    3122   53117    17.0 |  0.000 % |
36.58/36.64	c |    131169 |    3221     9663 |    4930    4378   75893    17.3 |  0.000 % |
36.58/36.64	c |    196853 |    3196     9588 |    5423    3513   65705    18.7 |  0.232 % |
36.58/36.64	c |    295379 |    3161     9483 |    5965    4419   74493    16.9 |  0.618 % |
36.58/36.64	c 36.620s elapsed
36.58/36.64	c restarts: 18
36.58/36.64	c decisions: 438045
36.58/36.64	c propagations: 60872824
36.58/36.64	c conflicts: 360976
36.58/36.64	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node55/watcher-427035-1177831533 -o ROOT/results/node55/solver-427035-1177831533 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/427035-1177831533/mxc /tmp/evaluation/427035-1177831533/instance-427035-1177831533.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): 7500 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: 0.72 1.24 1.56 3/64 8777
/proc/meminfo: memFree=1383356/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1200 CPUtime=0
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 169 0 0 0 0 0 0 0 18 0 1 0 231063362 1228800 154 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134775504 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 300 154 57 122 0 174 0

[startup+0.075972 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8777
/proc/meminfo: memFree=1383356/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1332 CPUtime=0.07
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 193 0 0 0 7 0 0 0 18 0 1 0 231063362 1363968 178 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519969 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 333 178 59 122 0 207 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 1332

[startup+0.101973 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8777
/proc/meminfo: memFree=1383356/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1332 CPUtime=0.1
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 202 0 0 0 10 0 0 0 18 0 1 0 231063362 1363968 187 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530302 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 333 187 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.301993 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8777
/proc/meminfo: memFree=1383356/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1472 CPUtime=0.29
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 244 0 0 0 29 0 0 0 19 0 1 0 231063362 1507328 227 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134529671 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 368 227 67 122 0 242 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1472

[startup+0.701031 s]
/proc/loadavg: 0.72 1.24 1.56 3/64 8777
/proc/meminfo: memFree=1383356/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1604 CPUtime=0.69
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 266 0 0 0 69 0 0 0 23 0 1 0 231063362 1642496 249 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 401 249 67 122 0 275 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1604

[startup+1.5021 s]
/proc/loadavg: 0.74 1.24 1.56 2/65 8778
/proc/meminfo: memFree=1382580/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1736 CPUtime=1.49
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 299 0 0 0 149 0 0 0 25 0 1 0 231063362 1777664 282 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519951 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 434 282 67 122 0 308 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1736

[startup+3.10126 s]
/proc/loadavg: 0.74 1.24 1.56 2/65 8778
/proc/meminfo: memFree=1382324/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1736 CPUtime=3.09
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 326 0 0 0 309 0 0 0 25 0 1 0 231063362 1777664 309 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519590 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 434 309 67 122 0 308 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1736

[startup+6.30156 s]
/proc/loadavg: 0.76 1.23 1.56 2/65 8778
/proc/meminfo: memFree=1382068/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=1984 CPUtime=6.29
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 365 0 0 0 629 0 0 0 25 0 1 0 231063362 2031616 348 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134535284 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 496 348 67 122 0 370 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1984

[startup+12.7012 s]
/proc/loadavg: 0.78 1.23 1.55 2/65 8778
/proc/meminfo: memFree=1381876/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2108 CPUtime=12.69
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 417 0 0 0 1269 0 0 0 25 0 1 0 231063362 2158592 400 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134529873 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 527 400 67 122 0 401 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2108

[startup+25.5014 s]
/proc/loadavg: 0.81 1.22 1.54 2/65 8778
/proc/meminfo: memFree=1381620/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2492 CPUtime=25.48
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 489 0 0 0 2548 0 0 0 25 0 1 0 231063362 2551808 472 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 623 472 67 122 0 497 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 2492

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

[startup+31.906 s]
/proc/loadavg: 0.84 1.22 1.54 2/65 8778
/proc/meminfo: memFree=1381556/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2492 CPUtime=31.89
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 510 0 0 0 3189 0 0 0 25 0 1 0 231063362 2551808 493 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519619 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 623 493 67 122 0 497 0
Current children cumulated CPU time (s) 31.89
Current children cumulated vsize (KiB) 2492

[startup+35.1013 s]
/proc/loadavg: 0.84 1.22 1.54 2/65 8778
/proc/meminfo: memFree=1381492/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2608 CPUtime=35.08
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 524 0 0 0 3508 0 0 0 25 0 1 0 231063362 2670592 507 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519619 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 652 507 67 122 0 526 0
Current children cumulated CPU time (s) 35.08
Current children cumulated vsize (KiB) 2608

[startup+35.9014 s]
/proc/loadavg: 0.84 1.22 1.54 2/65 8778
/proc/meminfo: memFree=1381492/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2608 CPUtime=35.88
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 524 0 0 0 3588 0 0 0 25 0 1 0 231063362 2670592 507 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 652 507 67 122 0 526 0
Current children cumulated CPU time (s) 35.88
Current children cumulated vsize (KiB) 2608

[startup+36.3044 s]
/proc/loadavg: 0.85 1.21 1.54 2/65 8778
/proc/meminfo: memFree=1381492/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2608 CPUtime=36.28
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 525 0 0 0 3628 0 0 0 25 0 1 0 231063362 2670592 508 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.28
Current children cumulated vsize (KiB) 2608

[startup+36.5015 s]
/proc/loadavg: 0.85 1.21 1.54 2/65 8778
/proc/meminfo: memFree=1381492/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2608 CPUtime=36.48
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 525 0 0 0 3648 0 0 0 25 0 1 0 231063362 2670592 508 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519261 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.48
Current children cumulated vsize (KiB) 2608

[startup+36.6015 s]
/proc/loadavg: 0.85 1.21 1.54 2/65 8778
/proc/meminfo: memFree=1381492/2055920 swapFree=4184544/4192956
[pid=8777] ppid=8775 vsize=2608 CPUtime=36.58
/proc/8777/stat : 8777 (mxc) R 8775 8777 7421 0 -1 4194304 525 0 0 0 3658 0 0 0 25 0 1 0 231063362 2670592 508 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134528293 0 0 4096 0 0 0 0 17 1 0 0
/proc/8777/statm: 652 508 67 122 0 526 0
Current children cumulated CPU time (s) 36.58
Current children cumulated vsize (KiB) 2608

Child status: 20
Real time (s): 36.6442
CPU time (s): 36.6204
CPU user time (s): 36.6144
CPU system time (s): 0.005999
CPU usage (%): 99.9352
Max. virtual memory (cumulated for all children) (KiB): 2608

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 36.6144
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= 526
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= 66

runsolver used 0.032994 second user time and 0.073988 second system time

The end

Launcher Data (download as text)

Begin job on node55 on Sun Apr 29 07:25:33 UTC 2007

IDJOB= 427035
IDBENCH= 20298
IDSOLVER= 174
FILE ID= node55/427035-1177831533

PBS_JOBID= 4718276

Free space on /tmp= 66564 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/427035-1177831533/mxc /tmp/evaluation/427035-1177831533/instance-427035-1177831533.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-427035-1177831533 -o ROOT/results/node55/solver-427035-1177831533 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/427035-1177831533/mxc /tmp/evaluation/427035-1177831533/instance-427035-1177831533.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  6c6574c6e53b7d1ef3d1cc6ac9e5dec3

RANDOM SEED= 553156668

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node55.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		: 3000.216
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		: 3000.216
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:       1383764 kB
Buffers:         59636 kB
Cached:         525464 kB
SwapCached:       2556 kB
Active:         315948 kB
Inactive:       279376 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1383764 kB
SwapTotal:     4192956 kB
SwapFree:      4184544 kB
Dirty:             828 kB
Writeback:           0 kB
Mapped:          16576 kB
Slab:            62860 kB
Committed_AS:  1392888 kB
PageTables:       1380 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= 66564 MiB

End job on node55 on Sun Apr 29 07:26:10 UTC 2007