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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Nameweb/uclid_pb_benchmarks/normalized-ooo.burch_dill.3.accl.ucl.opb
MD5SUM9fbb3a49a26e96e8ca349ca5e732b02f
Bench Categoryno optimization function (SAT)
Has Objective FunctionNO
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 36
Number of bits of the biggest number in a constraint 6
Biggest sum of numbers in a constraint 130
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark12.5371
Number of variables4622
Total number of constraints12569
Number of constraints which are clauses11753
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints816
Minimum length of a constraint1
Maximum length of a constraint11

Trace number 9766

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-23 15:19:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8524 boxname=wulflinc30 idbench=320 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9fbb3a49a26e96e8ca349ca5e732b02f  /oldhome/oroussel/tmp/wulflinc30/normalized-ooo.burch_dill.3.accl.ucl.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc30/normalized-ooo.burch_dill.3.accl.ucl.opb
IDLAUNCH: 8524
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        944180 kB
Buffers:         11404 kB
Cached:          61764 kB
SwapCached:          0 kB
Active:          42884 kB
Inactive:        33220 kB
HighTotal:      131008 kB
HighFree:        65128 kB
LowTotal:       903652 kB
LowFree:        879052 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8708 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 15:20:49 (client local time) WITH STATUS 20 IN 96.2814 SECONDS
stats: 8524 7 96.2814 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...

c Decision: 850/17346	Time: 7.61484/86400
c Decision: 850/17346	Time: 10.2494/86400
c Decision: 850/17346	Time: 13.467/86400
c Decision: 1804/17346	Time: 20.1889/86400
c Decision: 1804/17346	Time: 24.1303/86400
c Decision: 1804/17346	Time: 28.3417/86400
c Decision: 1804/17346	Time: 32.1801/86400
c Decision: 1804/17346	Time: 36.4495/86400
c Decision: 1804/17346	Time: 40.6268/86400
c Decision: 1804/17346	Time: 44.3043/86400
c Decision: 1804/17346	Time: 48.5376/86400
c Decision: 1804/17346	Time: 52.459/86400
c Decision: 1804/17346	Time: 56.6104/86400
c Decision: 1804/17346	Time: 61.0447/86400
c Decision: 1804/17346	Time: 64.9121/86400
c Decision: 1804/17346	Time: 68.7366/86400
c Decision: 2151/17346	Time: 73.1329/86400
c Decision: 2152/17346	Time: 79.4209/86400
c Decision: 2152/17346	Time: 82.8534/86400
c Decision: 2152/17346	Time: 85.525/86400
c Decision: 2152/17346	Time: 88.9675/86400
s UNSATISFIABLE

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21174680 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/7824/statm): 373 2 364 364 0 9 0
[pid=7824] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-ooo.burch_dill.3.accl.ucl.opb

[startup+10.002 s]
Raw data (loadavg): 0.68 0.87 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 3026 0 0 0 932 27 0 0 25 0 1 0 21174680 10752000 2038 4294967295 134512640 135987407 3221224560 3221223392 134812773 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7824/statm): 2625 2038 364 364 0 2261 0
[pid=7824] vsize: 10500
Current children cumulated CPU time (s) 9.59
Current children cumulated vsize (Kb) 10500

[startup+20.0018 s]
Raw data (loadavg): 0.73 0.88 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 3276 0 0 0 1862 50 0 0 25 0 1 0 21174680 12423168 2220 4294967295 134512640 135987407 3221224560 3221223248 134812053 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7824/statm): 3033 2220 364 364 0 2669 0
[pid=7824] vsize: 12132
Current children cumulated CPU time (s) 19.12
Current children cumulated vsize (Kb) 12132

[startup+30.0026 s]
Raw data (loadavg): 0.77 0.88 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 3503 0 0 0 2805 68 0 0 25 0 1 0 21174680 12734464 2379 4294967295 134512640 135987407 3221224560 3221223120 135480413 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7824/statm): 3109 2379 364 364 0 2745 0
[pid=7824] vsize: 12436
Current children cumulated CPU time (s) 28.73
Current children cumulated vsize (Kb) 12436

[startup+40.0034 s]
Raw data (loadavg): 0.80 0.88 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 3657 0 0 0 3745 87 0 0 25 0 1 0 21174680 13037568 2431 4294967295 134512640 135987407 3221224560 3221223248 134811885 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7824/statm): 3183 2431 364 364 0 2819 0
[pid=7824] vsize: 12732
Current children cumulated CPU time (s) 38.32
Current children cumulated vsize (Kb) 12732

[startup+50.0042 s]
Raw data (loadavg): 0.83 0.89 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 3866 0 0 0 4689 104 0 0 25 0 1 0 21174680 15134720 2572 4294967295 134512640 135987407 3221224560 3221223248 134811915 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7824/statm): 3695 2572 364 364 0 3331 0
[pid=7824] vsize: 14780
Current children cumulated CPU time (s) 47.93
Current children cumulated vsize (Kb) 14780

[startup+60.004 s]
Raw data (loadavg): 0.86 0.89 0.95 1/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) T 7823 7824 4004 0 -1 0 3999 0 0 0 5632 125 0 0 25 0 1 0 21174680 15265792 2637 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7824/statm): 3727 2637 364 364 0 3363 0
[pid=7824] vsize: 14908
Current children cumulated CPU time (s) 57.57
Current children cumulated vsize (Kb) 14908

[startup+70.0038 s]
Raw data (loadavg): 0.88 0.89 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 4640 0 0 0 6578 144 0 0 25 0 1 0 21174680 16965632 2791 4294967295 134512640 135987407 3221224560 3221223408 134790012 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7824/statm): 4142 2791 364 364 0 3778 0
[pid=7824] vsize: 16568
Current children cumulated CPU time (s) 67.22
Current children cumulated vsize (Kb) 16568

[startup+80.0046 s]
Raw data (loadavg): 0.90 0.90 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 4816 0 0 0 7529 162 0 0 25 0 1 0 21174680 17113088 2899 4294967295 134512640 135987407 3221224560 3221223248 134811870 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7824/statm): 4178 2899 364 364 0 3814 0
[pid=7824] vsize: 16712
Current children cumulated CPU time (s) 76.91
Current children cumulated vsize (Kb) 16712

[startup+90.0044 s]
Raw data (loadavg): 0.91 0.90 0.95 2/55 7824
Raw data (/proc/7824/stat): 7824 (pb2sat) R 7823 7824 4004 0 -1 0 5150 0 0 0 8482 179 0 0 25 0 1 0 21174680 17248256 3165 4294967295 134512640 135987407 3221224560 3221223248 134811773 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7824/statm): 4211 3165 364 364 0 3847 0
[pid=7824] vsize: 16844
Current children cumulated CPU time (s) 86.61
Current children cumulated vsize (Kb) 16844
One traced child (pid=7824) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 99.864
CPU time (s): 96.2814
CPU user time (s): 94.3766
CPU system time (s): 1.90471
CPU usage (%): 96.4125
Max. virtual memory (cumulated for all children) (Kb): 16844

Verifier Data

ERROR: no interpretation found !