Trace number 316423

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 8.39572 8.4118

General information on the benchmark

Namecrafted/spence/
medium/s65-100.cnf
MD5SUMc783ce32e47f2d2dd661851cca52c3a7
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark3.61445
Satisfiable
(Un)Satisfiability was proved
Number of variables65
Number of clauses140
Sum of the clauses size420
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3140
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

8.38/8.41	c MXC attempting /tmp/evaluation/316423-1172668939/instance-316423-1172668939.cnf
8.38/8.41	c 0 assignments made, starting to guess now
8.38/8.41	c ===================================[MXC]=====================================
8.38/8.41	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
8.38/8.41	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
8.38/8.41	c =============================================================================
8.38/8.41	c |         0 |     140      420 |    1000       0       0     nan |  0.000 % |
8.38/8.41	c |       101 |     140      420 |    1100     101    1245    12.3 |  0.000 % |
8.38/8.41	c |       253 |     140      420 |    1210     253    3414    13.5 |  0.000 % |
8.38/8.41	c |       478 |     140      420 |    1331     478    6580    13.8 |  0.000 % |
8.38/8.41	c |       815 |     140      420 |    1464     815   11113    13.6 |  0.000 % |
8.38/8.41	c |      1321 |     140      420 |    1610    1321   17678    13.4 |  0.000 % |
8.38/8.41	c |      2082 |     140      420 |    1771    1276   16584    13.0 |  0.000 % |
8.38/8.41	c |      3224 |     140      420 |    1948    1532   20575    13.4 |  0.000 % |
8.38/8.41	c |      4932 |     140      420 |    2143    1291   14435    11.2 |  0.000 % |
8.38/8.41	c |      7494 |     140      420 |    2357    1709   20824    12.2 |  0.000 % |
8.38/8.41	c |     11338 |     140      420 |    2593    2016   23316    11.6 |  0.000 % |
8.38/8.41	c |     17105 |     140      420 |    2853    2595   26369    10.2 |  0.000 % |
8.38/8.41	c |     25755 |     140      420 |    3138    2687   26506     9.9 |  0.000 % |
8.38/8.41	c |     38730 |     140      420 |    3452    3108   30703     9.9 |  0.000 % |
8.38/8.41	c |     58191 |     140      420 |    3797    1861   19186    10.3 |  0.000 % |
8.38/8.41	c |     87384 |     140      420 |    4177    2584   28255    10.9 |  0.000 % |
8.38/8.41	c |    131173 |     140      420 |    4594    2523   25515    10.1 |  0.000 % |
8.38/8.41	c |    196857 |     140      420 |    5054    3893   32435     8.3 |  0.000 % |
8.38/8.41	c 8.390s elapsed
8.38/8.41	c restarts: 17
8.38/8.41	c decisions: 326063
8.38/8.41	c propagations: 5125902
8.38/8.41	c conflicts: 265990
8.38/8.41	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node6/watcher-316423-1172668939 -o ROOT/results/node6/solver-316423-1172668939 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/316423-1172668939/mxc /tmp/evaluation/316423-1172668939/instance-316423-1172668939.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): 2400 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: 0.91 0.95 0.95 3/77 28884
/proc/meminfo: memFree=1666488/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=932 CPUtime=0
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 97 0 0 0 0 0 0 0 18 0 1 0 286848658 954368 81 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 233 81 59 122 0 107 0

[startup+0.027385 s]
/proc/loadavg: 0.91 0.95 0.95 3/77 28884
/proc/meminfo: memFree=1666488/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1064 CPUtime=0.02
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 126 0 0 0 2 0 0 0 18 0 1 0 286848658 1089536 110 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 266 110 59 122 0 140 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1064

[startup+0.101399 s]
/proc/loadavg: 0.91 0.95 0.95 3/77 28884
/proc/meminfo: memFree=1666488/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1072 CPUtime=0.1
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 156 0 0 0 10 0 0 0 18 0 1 0 286848658 1097728 138 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134528321 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 268 138 67 122 0 142 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1072

[startup+0.301438 s]
/proc/loadavg: 0.91 0.95 0.95 3/77 28884
/proc/meminfo: memFree=1666488/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1196 CPUtime=0.29
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 179 0 0 0 29 0 0 0 19 0 1 0 286848658 1224704 161 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519243 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 299 161 67 122 0 173 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1196

[startup+0.702518 s]
/proc/loadavg: 0.91 0.95 0.95 3/77 28884
/proc/meminfo: memFree=1666488/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1328 CPUtime=0.7
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 202 0 0 0 70 0 0 0 24 0 1 0 286848658 1359872 184 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519220 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 332 184 67 122 0 206 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1328

[startup+1.50168 s]
/proc/loadavg: 0.91 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665968/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1328 CPUtime=1.49
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 219 0 0 0 149 0 0 0 25 0 1 0 286848658 1359872 201 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519261 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 332 201 67 122 0 206 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1328

[startup+3.10199 s]
/proc/loadavg: 0.91 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665712/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1568 CPUtime=3.09
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 268 0 0 0 309 0 0 0 25 0 1 0 286848658 1605632 250 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134534724 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 392 250 67 122 0 266 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1568

[startup+6.30162 s]
/proc/loadavg: 0.92 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665392/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1684 CPUtime=6.29
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 306 0 0 0 629 0 0 0 25 0 1 0 286848658 1724416 288 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519287 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 421 288 67 122 0 295 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1684

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

[startup+7.10178 s]
/proc/loadavg: 0.92 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665392/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1684 CPUtime=7.09
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 310 0 0 0 709 0 0 0 25 0 1 0 286848658 1724416 292 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519232 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 421 292 67 122 0 295 0
Current children cumulated CPU time (s) 7.09
Current children cumulated vsize (KiB) 1684

[startup+7.90194 s]
/proc/loadavg: 0.92 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665328/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1796 CPUtime=7.89
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 316 0 0 0 789 0 0 0 25 0 1 0 286848658 1839104 298 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 449 298 67 122 0 323 0
Current children cumulated CPU time (s) 7.89
Current children cumulated vsize (KiB) 1796

[startup+8.30202 s]
/proc/loadavg: 0.92 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665328/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1796 CPUtime=8.29
/proc/28884/stat : 28884 (mxc) R 28882 28884 28543 0 -1 4194304 320 0 0 0 829 0 0 0 25 0 1 0 286848658 1839104 302 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134529869 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 449 302 67 122 0 323 0
Current children cumulated CPU time (s) 8.29
Current children cumulated vsize (KiB) 1796

[startup+8.40104 s]
/proc/loadavg: 0.92 0.95 0.95 2/78 28885
/proc/meminfo: memFree=1665328/2055924 swapFree=4191880/4192956
[pid=28884] ppid=28882 vsize=1796 CPUtime=8.38
/proc/28884/stat : 28884 (mxc) S 28882 28884 28543 0 -1 4194304 320 0 0 0 838 0 0 0 25 0 1 0 286848658 1839104 302 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134550682 0 0 4096 0 0 0 0 17 1 0 0
/proc/28884/statm: 449 302 67 122 0 323 0
Current children cumulated CPU time (s) 8.38
Current children cumulated vsize (KiB) 1796

Child status: 20
Real time (s): 8.4118
CPU time (s): 8.39572
CPU user time (s): 8.38972
CPU system time (s): 0.005999
CPU usage (%): 99.8088
Max. virtual memory (cumulated for all children) (KiB): 1796

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 8.38972
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= 321
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= 173

runsolver used 0.006998 second user time and 0.028995 second system time

The end

Launcher Data (download as text)

Begin job on node6 on Wed Feb 28 13:22:19 UTC 2007

IDJOB= 316423
IDBENCH= 20441
IDSOLVER= 107
FILE ID= node6/316423-1172668939

PBS_JOBID= 3980978

Free space on /tmp= 66429 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/spence/medium/s65-100.cnf
COMMAND LINE= /tmp/evaluation/316423-1172668939/mxc /tmp/evaluation/316423-1172668939/instance-316423-1172668939.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node6/watcher-316423-1172668939 -o ROOT/results/node6/solver-316423-1172668939 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/316423-1172668939/mxc /tmp/evaluation/316423-1172668939/instance-316423-1172668939.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  c783ce32e47f2d2dd661851cca52c3a7

RANDOM SEED= 384362004

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node6.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		: 3000.277
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		: 3000.277
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:      2055924 kB
MemFree:       1666960 kB
Buffers:         24040 kB
Cached:         258820 kB
SwapCached:        292 kB
Active:         101112 kB
Inactive:       237308 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1666960 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:             620 kB
Writeback:           0 kB
Mapped:          65660 kB
Slab:            36208 kB
Committed_AS:   999492 kB
PageTables:       1744 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= 66429 MiB

End job on node6 on Wed Feb 28 13:22:28 UTC 2007