Trace number 3266609

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
PicoSAT 941UNSAT 8.40772 8.4094

General information on the benchmark

NameSAT02/handmade/chu-min-li/urquhart/
urquhart3_25bis.shuffled.cnf
MD5SUM0313821ef13a43b48c58a56902d9e90b
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.000999
Satisfiable
(Un)Satisfiability was proved
Number of variables99
Number of clauses264
Sum of the clauses size792
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3264
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

8.39/8.40	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 935)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3266609-1303581504/watcher-3266609-1303581504 -o /tmp/evaluation-result-3266609-1303581504/solver-3266609-1303581504 -C 2400 -W 1300 -M 7680 picosat HOME/instance-3266609-1303581504.cnf 

running on 2 cores: 1,3

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.27 3.86 3.92 5/183 12587
/proc/meminfo: memFree=14493368/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=0 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 175 0 0 0 0 0 0 0 23 0 1 0 469751324 1785856 121 33554432000 134512640 134603332 4288144800 18446744073709551615 134563407 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 121 97 23 0 62 0

[startup+0.0711831 s]
/proc/loadavg: 3.27 3.86 3.92 5/183 12587
/proc/meminfo: memFree=14493368/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=0.06 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 180 0 0 0 6 0 0 0 23 0 1 0 469751324 1785856 126 33554432000 134512640 134603332 4288144800 18446744073709551615 134563608 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 126 97 23 0 62 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1744

[startup+0.100175 s]
/proc/loadavg: 3.27 3.86 3.92 5/183 12587
/proc/meminfo: memFree=14493368/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=0.09 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 180 0 0 0 9 0 0 0 23 0 1 0 469751324 1785856 126 33554432000 134512640 134603332 4288144800 18446744073709551615 134564559 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 126 97 23 0 62 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1744

[startup+0.300142 s]
/proc/loadavg: 3.27 3.86 3.92 5/183 12587
/proc/meminfo: memFree=14493368/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=0.29 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 183 0 0 0 29 0 0 0 25 0 1 0 469751324 1785856 129 33554432000 134512640 134603332 4288144800 18446744073709551615 134546920 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 129 97 23 0 62 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1744

[startup+0.701067 s]
/proc/loadavg: 3.27 3.86 3.92 5/183 12587
/proc/meminfo: memFree=14493368/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=0.69 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 189 0 0 0 69 0 0 0 25 0 1 0 469751324 1785856 135 33554432000 134512640 134603332 4288144800 18446744073709551615 134548378 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 135 97 23 0 62 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1744

[startup+1.50093 s]
/proc/loadavg: 3.27 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14484396/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=1.49 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 197 0 0 0 149 0 0 0 25 0 1 0 469751324 1785856 143 33554432000 134512640 134603332 4288144800 18446744073709551615 134550913 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 143 97 23 0 62 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1744

[startup+3.10064 s]
/proc/loadavg: 3.27 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483284/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=3.09 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 309 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134551034 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1744

[startup+6.30108 s]
/proc/loadavg: 3.33 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483248/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=6.3 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 630 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134525269 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 6.3
Current children cumulated vsize (KiB) 1744

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

[startup+7.10094 s]
/proc/loadavg: 3.33 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483124/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=7.09 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 709 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134546939 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 7.09
Current children cumulated vsize (KiB) 1744

[startup+7.90079 s]
/proc/loadavg: 3.33 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483328/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=7.89 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 789 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134528600 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 7.89
Current children cumulated vsize (KiB) 1744

[startup+8.30073 s]
/proc/loadavg: 3.33 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483328/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=8.29 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 829 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134564544 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 8.29
Current children cumulated vsize (KiB) 1744

[startup+8.40071 s]
/proc/loadavg: 3.33 3.86 3.92 6/190 12599
/proc/meminfo: memFree=14483328/32951124 swapFree=67111528/67111528
[pid=12587] ppid=12585 vsize=1744 CPUtime=8.39 cores=1,3
/proc/12587/stat : 12587 (picosat) R 12585 12587 12159 0 -1 4202496 199 0 0 0 839 0 0 0 25 0 1 0 469751324 1785856 145 33554432000 134512640 134603332 4288144800 18446744073709551615 134563592 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/12587/statm: 436 145 97 23 0 62 0
Current children cumulated CPU time (s) 8.39
Current children cumulated vsize (KiB) 1744

Child status: 20
Real time (s): 8.4094
CPU time (s): 8.40772
CPU user time (s): 8.40772
CPU system time (s): 0
CPU usage (%): 99.98
Max. virtual memory (cumulated for all children) (KiB): 1744

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 8.40772
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 203
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= 3
involuntary context switches= 95

runsolver used 0.010998 second user time and 0.029995 second system time

The end

Launcher Data 

Begin job on node108 at 2011-04-23 19:58:24
IDJOB=3266609
IDBENCH=87848
IDSOLVER=1604
FILE ID=node108/3266609-1303581504
RUNJOBID= node108-1303581504-12558
PBS_JOBID= 13150338
Free space on /tmp= 71400 MiB

SOLVER NAME= PicoSAT 941
BENCH NAME= SAT02/handmade/chu-min-li/urquhart/urquhart3_25bis.shuffled.cnf
COMMAND LINE= picosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3266609-1303581504/watcher-3266609-1303581504 -o /tmp/evaluation-result-3266609-1303581504/solver-3266609-1303581504 -C 2400 -W 1300 -M 7680  picosat HOME/instance-3266609-1303581504.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 0313821ef13a43b48c58a56902d9e90b
RANDOM SEED=816303055

node108.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.64
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5226.15
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.77
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      14493524 kB
Buffers:       2252804 kB
Cached:       15570096 kB
SwapCached:          0 kB
Active:        9911336 kB
Inactive:      7976456 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      14493524 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             196 kB
Writeback:           0 kB
AnonPages:       63844 kB
Mapped:          15272 kB
Slab:           505884 kB
PageTables:       4748 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   222980 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71400 MiB
End job on node108 at 2011-04-23 19:58:32