Trace number 338448

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
KCNFS SMP? (MO) 5.37 3.32727

General information on the benchmark

Namecrafted/Difficult/contest05/sabharwal/
grid-pebbling-sat-grid-pbl-0300.sat05-1341.sat05-1341.reshuffled-07.cnf
MD5SUMe899c85929b7de69ebfb14f0dad93191
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.77373
Satisfiable
(Un)Satisfiability was proved
Number of variables90300
Number of clauses179701
Sum of the clauses size718198
Maximum clause length4
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2300
Number of clauses of size 30
Number of clauses of size 4179399
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/338448-1173686116/kcnfs-smp   V. 1.2
0.00/0.00	c reading file ... done
0.39/0.45	c Input file : '/tmp/evaluation/338448-1173686116/instance-338448-1173686116.cnf'
0.39/0.45	c [#vars: 90300, #clauses: 179701 , (1-4)-CNF]
0.99/1.02	c unit clauses propagate before processing (#clause: 179699)
0.99/1.02	c estimated distribution: 8 tasks
1.10/1.11	c [PID]: 12578 12579 12580 12581 12582 12583 12584
3.86/2.61	c [PID]: 12585
3.86/2.61	c real distribution: 8 tasks

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer:

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node21/watcher-338448-1173686116 -o ROOT/results/node21/solver-338448-1173686116 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/338448-1173686116/kcnfs-smp /tmp/evaluation/338448-1173686116/instance-338448-1173686116.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: 0.92 0.98 1.02 3/77 12576
/proc/meminfo: memFree=1765920/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=180916 CPUtime=0
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 123 0 0 0 0 0 0 0 18 0 1 0 94582461 185257984 108 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/12576/statm: 45229 108 48 160 0 45067 0

[startup+0.104079 s]
/proc/loadavg: 0.92 0.98 1.02 3/77 12576
/proc/meminfo: memFree=1765920/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=185932 CPUtime=0.09
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 1388 0 0 0 9 0 0 0 18 0 1 0 94582461 190394368 1373 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/12576/statm: 46483 1374 48 160 0 46321 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 185932

[startup+0.201089 s]
/proc/loadavg: 0.92 0.98 1.02 3/77 12576
/proc/meminfo: memFree=1765920/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=190948 CPUtime=0.19
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 2623 0 0 0 18 1 0 0 18 0 1 0 94582461 195530752 2608 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/12576/statm: 47737 2609 48 160 0 47575 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 190948

[startup+0.3011 s]
/proc/loadavg: 0.92 0.98 1.02 3/77 12576
/proc/meminfo: memFree=1765920/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=195964 CPUtime=0.28
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 3897 0 0 0 27 1 0 0 19 0 1 0 94582461 200667136 3882 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/12576/statm: 48991 3882 48 160 0 48829 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 195964

[startup+0.701143 s]
/proc/loadavg: 0.92 0.98 1.02 3/77 12576
/proc/meminfo: memFree=1765920/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=216472 CPUtime=0.69
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 11221 0 0 0 63 6 0 0 23 0 1 0 94582461 221667328 11205 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134541864 0 0 4096 0 0 0 0 17 1 0 0
/proc/12576/statm: 54118 11206 51 160 0 53956 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 216472

[startup+1.50225 s]
/proc/loadavg: 0.92 0.98 1.02 2/78 12577
/proc/meminfo: memFree=1678552/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=215760 CPUtime=1.21
/proc/12576/stat : 12576 (kcnfs-smp) R 12574 12576 12075 0 -1 4194304 34388 0 0 0 103 18 0 0 25 0 1 0 94582461 220938240 21858 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720364 0 0 4096 0 0 0 0 17 0 0 0
/proc/12576/statm: 53940 21858 66 160 0 53778 0
Current children cumulated CPU time (s) 1.21
Current children cumulated vsize (KiB) 215760

[startup+3.10143 s]
/proc/loadavg: 0.92 0.98 1.02 8/84 12583
/proc/meminfo: memFree=1550120/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=215760 CPUtime=1.42
/proc/12576/stat : 12576 (kcnfs-smp) S 12574 12576 12075 0 -1 4194304 52157 0 0 0 110 32 0 0 25 0 1 0 94582461 220938240 21858 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/12576/statm: 53940 21858 66 160 0 53778 0
[pid=12578] ppid=12576 vsize=215760 CPUtime=0.93
/proc/12578/stat : 12578 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5770 0 0 0 90 3 0 0 25 0 1 0 94582572 220938240 21860 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720561 0 0 4096 2 0 0 0 17 1 0 0
/proc/12578/statm: 53940 21860 66 160 0 53778 0
[pid=12579] ppid=12576 vsize=215760 CPUtime=0.77
/proc/12579/stat : 12579 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5726 0 0 0 72 5 0 0 25 0 1 0 94582576 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720338 0 0 4096 0 0 0 0 17 1 0 0
/proc/12579/statm: 53940 21859 66 160 0 53778 0
[pid=12580] ppid=12576 vsize=215760 CPUtime=0.52
/proc/12580/stat : 12580 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5448 0 0 0 47 5 0 0 25 0 1 0 94582591 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720296 0 0 4096 2 0 0 0 17 0 0 0
/proc/12580/statm: 53940 21859 66 160 0 53778 0
[pid=12581] ppid=12576 vsize=215760 CPUtime=0.44
/proc/12581/stat : 12581 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5463 0 0 0 39 5 0 0 25 0 1 0 94582617 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720296 0 0 4096 0 0 0 0 17 0 0 0
/proc/12581/statm: 53940 21859 66 160 0 53778 0
[pid=12582] ppid=12576 vsize=215760 CPUtime=0.32
/proc/12582/stat : 12582 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5404 0 0 0 28 4 0 0 25 0 1 0 94582650 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720438 0 0 4096 2 0 0 0 17 0 0 0
/proc/12582/statm: 53940 21859 66 160 0 53778 0
[pid=12583] ppid=12576 vsize=215760 CPUtime=0.22
/proc/12583/stat : 12583 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5374 0 0 0 19 3 0 0 25 0 1 0 94582657 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720398 0 0 4096 0 0 0 0 17 0 0 0
/proc/12583/statm: 53940 21859 66 160 0 53778 0
Current children cumulated CPU time (s) 4.62
Current children cumulated vsize (KiB) 1510320



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+3.30145 s]
/proc/loadavg: 1.57 1.12 1.06 9/86 12585
/proc/meminfo: memFree=1499280/2055920 swapFree=4152672/4192956
[pid=12576] ppid=12574 vsize=215760 CPUtime=1.42
/proc/12576/stat : 12576 (kcnfs-smp) S 12574 12576 12075 0 -1 4194304 52157 0 0 0 110 32 0 0 25 0 1 0 94582461 220938240 21858 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134836797 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/12576/statm: 53940 21858 66 160 0 53778 0
[pid=12578] ppid=12576 vsize=215760 CPUtime=1.03
/proc/12578/stat : 12578 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5795 0 0 0 100 3 0 0 25 0 1 0 94582572 220938240 21860 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720261 0 0 4096 2 0 0 0 17 1 0 0
/proc/12578/statm: 53940 21860 66 160 0 53778 0
[pid=12579] ppid=12576 vsize=215760 CPUtime=0.8
/proc/12579/stat : 12579 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5734 0 0 0 74 6 0 0 25 0 1 0 94582576 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720438 0 0 4096 0 0 0 0 17 1 0 0
/proc/12579/statm: 53940 21859 66 160 0 53778 0
[pid=12580] ppid=12576 vsize=215760 CPUtime=0.62
/proc/12580/stat : 12580 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5696 0 0 0 57 5 0 0 25 0 1 0 94582591 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720408 0 0 4096 2 0 0 0 17 0 0 0
/proc/12580/statm: 53940 21859 66 160 0 53778 0
[pid=12581] ppid=12576 vsize=215760 CPUtime=0.46
/proc/12581/stat : 12581 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5470 0 0 0 41 5 0 0 25 0 1 0 94582617 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720261 0 0 4096 0 0 0 0 17 0 0 0
/proc/12581/statm: 53940 21859 66 160 0 53778 0
[pid=12582] ppid=12576 vsize=215760 CPUtime=0.32
/proc/12582/stat : 12582 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5404 0 0 0 28 4 0 0 25 0 1 0 94582650 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720438 0 0 4096 2 0 0 0 17 0 0 0
/proc/12582/statm: 53940 21859 66 160 0 53778 0
[pid=12583] ppid=12576 vsize=215760 CPUtime=0.29
/proc/12583/stat : 12583 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5391 0 0 0 26 3 0 0 25 0 1 0 94582657 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720593 0 0 4096 0 0 0 0 17 0 0 0
/proc/12583/statm: 53940 21859 66 160 0 53778 0
[pid=12584] ppid=12576 vsize=215760 CPUtime=0.3
/proc/12584/stat : 12584 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5451 0 0 0 26 4 0 0 25 0 1 0 94582682 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134692358 0 0 4096 2 0 0 0 17 1 0 0
/proc/12584/statm: 53940 21859 66 160 0 53778 0
[pid=12585] ppid=12576 vsize=215760 CPUtime=0.13
/proc/12585/stat : 12585 (kcnfs-smp) R 12576 12576 12075 0 -1 4194368 5219 0 0 0 8 5 0 0 25 0 1 0 94582717 220938240 21859 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720408 0 0 4096 0 0 0 0 17 1 0 0
/proc/12585/statm: 53940 21859 66 160 0 53778 0
Current children cumulated CPU time (s) 5.37
Current children cumulated vsize (KiB) 1941840

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

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

Child ended because it received signal 15 (SIGTERM)

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 12576 and gives childrusage.ru_utime.tv_sec=1 childrusage.ru_utime.tv_usec=100832 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=330949
CPU time returned by wait4() is 1.43178
while last known CPU time is 5.37

Solver probably didn't/couldn't wait for its children
Using last known CPU time as value...

Real time (s): 3.32727
CPU time (s): 5.37
CPU user time (s): 4.7
CPU system time (s): 0.67
CPU usage (%): 161.394
Max. virtual memory (cumulated for all children) (KiB): 1941840

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.10083
system time used= 0.330949
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 52157
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= 47

runsolver used 0.002999 second user time and 0.025996 second system time

The end

Launcher Data (download as text)

Begin job on node21 on Mon Mar 12 07:55:17 UTC 2007

IDJOB= 338448
IDBENCH= 24723
IDSOLVER= 112
FILE ID= node21/338448-1173686116

PBS_JOBID= 4101488

Free space on /tmp= 66557 MiB

SOLVER NAME= KCNFS SMP
BENCH NAME= HOME/pub/bench/SAT07/crafted/Difficult/contest05/sabharwal/grid-pebbling-sat-grid-pbl-0300.sat05-1341.sat05-1341.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/338448-1173686116/kcnfs-smp /tmp/evaluation/338448-1173686116/instance-338448-1173686116.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node21/watcher-338448-1173686116 -o ROOT/results/node21/solver-338448-1173686116 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/338448-1173686116/kcnfs-smp /tmp/evaluation/338448-1173686116/instance-338448-1173686116.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  e899c85929b7de69ebfb14f0dad93191

RANDOM SEED= 149469328

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node21.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		: 3000.234
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		: 3000.234
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:       1766392 kB
Buffers:         37868 kB
Cached:         188332 kB
SwapCached:       8876 kB
Active:         133756 kB
Inactive:       116616 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1766392 kB
SwapTotal:     4192956 kB
SwapFree:      4152672 kB
Dirty:            8060 kB
Writeback:           0 kB
Mapped:          30208 kB
Slab:            24688 kB
Committed_AS:   242300 kB
PageTables:       1768 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= 66557 MiB

End job on node21 on Mon Mar 12 07:55:22 UTC 2007