Trace number 311151

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 17.8683 17.8865

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S834531569-01-UNSAT.cnf
MD5SUM4899d6582d732ef8e47904f161487c51
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark3.72943
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)

17.81/17.88	c MXC attempting /tmp/evaluation/311151-1172564645/instance-311151-1172564645.cnf
17.81/17.88	c 0 assignments made, starting to guess now
17.81/17.88	c ===================================[MXC]=====================================
17.81/17.88	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
17.81/17.88	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
17.81/17.88	c =============================================================================
17.81/17.88	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
17.81/17.88	c |       101 |    3221     9663 |    1180     100    1462    14.6 |  0.000 % |
17.81/17.88	c |       252 |    3221     9663 |    1298     245    4185    17.1 |  0.000 % |
17.81/17.88	c |       478 |    3221     9663 |    1428     471    7973    16.9 |  0.000 % |
17.81/17.88	c |       817 |    3221     9663 |    1570     808   13828    17.1 |  0.000 % |
17.81/17.88	c |      1324 |    3221     9663 |    1728    1315   22803    17.3 |  0.000 % |
17.81/17.88	c |      2084 |    3221     9663 |    1900    1210   24021    19.9 |  0.000 % |
17.81/17.88	c |      3226 |    3221     9663 |    2090    1402   23914    17.1 |  0.000 % |
17.81/17.88	c |      4935 |    3221     9663 |    2300    2067   35050    17.0 |  0.000 % |
17.81/17.88	c |      7498 |    3221     9663 |    2530    1179   20217    17.1 |  0.000 % |
17.81/17.88	c |     11343 |    3221     9663 |    2783    2492   39940    16.0 |  0.000 % |
17.81/17.88	c |     17109 |    3221     9663 |    3061    2690   41120    15.3 |  0.000 % |
17.81/17.88	c |     25760 |    3221     9663 |    3367    2163   32277    14.9 |  0.000 % |
17.81/17.88	c |     38734 |    3221     9663 |    3704    3364   56109    16.7 |  0.000 % |
17.81/17.88	c |     58197 |    3221     9663 |    4074    2462   41323    16.8 |  0.000 % |
17.81/17.88	c |     87389 |    3221     9663 |    4482    3129   48300    15.4 |  0.000 % |
17.81/17.88	c |    131178 |    3198     9594 |    4930    4340   73668    17.0 |  0.154 % |
17.81/17.88	c 17.860s elapsed
17.81/17.88	c restarts: 16
17.81/17.88	c decisions: 231404
17.81/17.88	c propagations: 31404975
17.81/17.88	c conflicts: 187143
17.81/17.88	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/node41/watcher-311151-1172564645 -o ROOT/results/node41/solver-311151-1172564645 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/311151-1172564645/mxc /tmp/evaluation/311151-1172564645/instance-311151-1172564645.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: 0.99 0.97 0.97 3/64 18270
/proc/meminfo: memFree=1816408/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1200 CPUtime=0
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 170 0 0 0 0 0 0 0 18 0 1 0 276420445 1228800 154 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134775504 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 300 154 57 122 0 174 0

[startup+0.106894 s]
/proc/loadavg: 0.99 0.97 0.97 3/64 18270
/proc/meminfo: memFree=1816408/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1332 CPUtime=0.1
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 206 0 0 0 10 0 0 0 18 0 1 0 276420445 1363968 190 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 333 190 59 122 0 207 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1332

[startup+0.514928 s]
/proc/loadavg: 0.99 0.97 0.97 3/64 18270
/proc/meminfo: memFree=1816408/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1472 CPUtime=0.51
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 260 0 0 0 51 0 0 0 21 0 1 0 276420445 1507328 242 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 368 242 67 122 0 242 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1472

[startup+1.335 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1815632/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1604 CPUtime=1.33
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 283 0 0 0 133 0 0 0 25 0 1 0 276420445 1642496 265 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134703188 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 401 265 67 122 0 275 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1604

[startup+2.97714 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1815376/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1724 CPUtime=2.97
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 323 0 0 0 297 0 0 0 25 0 1 0 276420445 1765376 305 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519627 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 431 305 67 122 0 305 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 1724

[startup+6.25243 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1815056/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=1980 CPUtime=6.24
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 365 0 0 0 624 0 0 0 25 0 1 0 276420445 2027520 347 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 495 347 67 122 0 369 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1980

[startup+12.707 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814752/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=12.7
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 430 0 0 0 1270 0 0 0 25 0 1 0 276420445 2293760 412 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531441 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 412 67 122 0 434 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 2240

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

[startup+13.115 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814752/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=13.1
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 432 0 0 0 1310 0 0 0 25 0 1 0 276420445 2293760 414 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 414 67 122 0 434 0
Current children cumulated CPU time (s) 13.1
Current children cumulated vsize (KiB) 2240

[startup+16.3913 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814752/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=16.38
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 442 0 0 0 1638 0 0 0 25 0 1 0 276420445 2293760 424 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 424 67 122 0 434 0
Current children cumulated CPU time (s) 16.38
Current children cumulated vsize (KiB) 2240

[startup+17.2114 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814688/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=17.2
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 442 0 0 0 1720 0 0 0 25 0 1 0 276420445 2293760 424 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 424 67 122 0 434 0
Current children cumulated CPU time (s) 17.2
Current children cumulated vsize (KiB) 2240

[startup+17.6194 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814688/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=17.61
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 442 0 0 0 1761 0 0 0 25 0 1 0 276420445 2293760 424 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519546 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 424 67 122 0 434 0
Current children cumulated CPU time (s) 17.61
Current children cumulated vsize (KiB) 2240

[startup+17.8234 s]
/proc/loadavg: 0.99 0.97 0.97 2/65 18271
/proc/meminfo: memFree=1814688/2055920 swapFree=4172320/4192956
[pid=18270] ppid=18268 vsize=2240 CPUtime=17.81
/proc/18270/stat : 18270 (mxc) R 18268 18270 16394 0 -1 4194304 442 0 0 0 1781 0 0 0 25 0 1 0 276420445 2293760 424 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519590 0 0 4096 0 0 0 0 17 1 0 0
/proc/18270/statm: 560 424 67 122 0 434 0
Current children cumulated CPU time (s) 17.81
Current children cumulated vsize (KiB) 2240

Child status: 20
Real time (s): 17.8865
CPU time (s): 17.8683
CPU user time (s): 17.8653
CPU system time (s): 0.002999
CPU usage (%): 99.8983
Max. virtual memory (cumulated for all children) (KiB): 2240

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 17.8653
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= 444
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= 9
involuntary context switches= 10

runsolver used 0.014997 second user time and 0.040993 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Feb 27 08:24:05 UTC 2007

IDJOB= 311151
IDBENCH= 20306
IDSOLVER= 107
FILE ID= node41/311151-1172564645

PBS_JOBID= 3971884

Free space on /tmp= 66560 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S834531569-01-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/311151-1172564645/mxc /tmp/evaluation/311151-1172564645/instance-311151-1172564645.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-311151-1172564645 -o ROOT/results/node41/solver-311151-1172564645 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/311151-1172564645/mxc /tmp/evaluation/311151-1172564645/instance-311151-1172564645.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  4899d6582d732ef8e47904f161487c51

RANDOM SEED= 624064909

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node41.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		: 3000.231
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		: 3000.231
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:       1816816 kB
Buffers:         31908 kB
Cached:         146388 kB
SwapCached:      14892 kB
Active:         105148 kB
Inactive:        94912 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1816816 kB
SwapTotal:     4192956 kB
SwapFree:      4172320 kB
Dirty:             696 kB
Writeback:           0 kB
Mapped:          15728 kB
Slab:            25068 kB
Committed_AS:   559364 kB
PageTables:       1476 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= 66560 MiB

End job on node41 on Tue Feb 27 08:24:23 UTC 2007