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.tag12.ucl.opb
MD5SUM04162d5197113d66489e9d95b6572385
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 41
Number of bits of the biggest number in a constraint 6
Biggest sum of numbers in a constraint 134
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 benchmark38.9081
Number of variables20605
Total number of constraints59851
Number of constraints which are clauses58675
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints1176
Minimum length of a constraint1
Maximum length of a constraint11

Trace number 9779

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-23 15:21:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8537 boxname=wulflinc23 idbench=333 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  04162d5197113d66489e9d95b6572385  /oldhome/oroussel/tmp/wulflinc23/normalized-ooo.tag12.ucl.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc23/normalized-ooo.tag12.ucl.opb
IDLAUNCH: 8537
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
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	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.185
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:        920916 kB
Buffers:         13852 kB
Cached:          81416 kB
SwapCached:          0 kB
Active:          61116 kB
Inactive:        37044 kB
HighTotal:      131008 kB
HighFree:        45304 kB
LowTotal:       903652 kB
LowFree:        875612 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10032 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 15:22:58 (client local time) WITH STATUS 20 IN 88.7125 SECONDS
stats: 8537 7 88.7125 20

Solver Data

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

c Decision: 1189/39235	Time: 43.6024/86400
c Decision: 1191/39235	Time: 49.2475/86400
c Decision: 1191/39235	Time: 52.899/86400
c Decision: 1391/39235	Time: 59.076/86400
c Decision: 1392/39235	Time: 63.9923/86400
c Decision: 1392/39235	Time: 69.7734/86400
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/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21223128 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 373 2 364 364 0 9 0
[pid=7336] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc23/normalized-ooo.tag12.ucl.opb

[startup+10.0015 s]
Raw data (loadavg): 0.93 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 6027 0 0 0 970 19 0 0 25 0 1 0 21223128 20393984 4013 4294967295 134512640 135987407 3221224560 3221223248 134812053 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 4979 4013 364 364 0 4615 0
[pid=7336] vsize: 19916
Current children cumulated CPU time (s) 9.89
Current children cumulated vsize (Kb) 19916

[startup+20.0022 s]
Raw data (loadavg): 0.94 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 6394 0 0 0 1952 27 0 0 25 0 1 0 21223128 21823488 4380 4294967295 134512640 135987407 3221224560 3221223248 134811729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 5328 4380 364 364 0 4964 0
[pid=7336] vsize: 21312
Current children cumulated CPU time (s) 19.79
Current children cumulated vsize (Kb) 21312

[startup+30.0028 s]
Raw data (loadavg): 0.95 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 6627 0 0 0 2930 36 0 0 25 0 1 0 21223128 24727552 4613 4294967295 134512640 135987407 3221224560 3221223248 134812053 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 6037 4613 364 364 0 5673 0
[pid=7336] vsize: 24148
Current children cumulated CPU time (s) 29.66
Current children cumulated vsize (Kb) 24148

[startup+40.0034 s]
Raw data (loadavg): 0.95 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 7009 0 0 0 3896 48 0 0 25 0 1 0 21223128 26071040 4995 4294967295 134512640 135987407 3221224560 3221223344 134812368 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 6365 4995 364 364 0 6001 0
[pid=7336] vsize: 25460
Current children cumulated CPU time (s) 39.44
Current children cumulated vsize (Kb) 25460

[startup+50.0041 s]
Raw data (loadavg): 0.96 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 7371 0 0 0 4866 58 0 0 25 0 1 0 21223128 27447296 5357 4294967295 134512640 135987407 3221224560 3221223020 135480906 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 6701 5357 364 364 0 6337 0
[pid=7336] vsize: 26804
Current children cumulated CPU time (s) 49.24
Current children cumulated vsize (Kb) 26804

[startup+60.0037 s]
Raw data (loadavg): 0.97 0.96 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 7693 0 0 0 5843 66 0 0 25 0 1 0 21223128 27643904 5525 4294967295 134512640 135987407 3221224560 3221223312 134801245 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 6749 5525 364 364 0 6385 0
[pid=7336] vsize: 26996
Current children cumulated CPU time (s) 59.09
Current children cumulated vsize (Kb) 26996

[startup+70.0043 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 7993 0 0 0 6830 72 0 0 25 0 1 0 21223128 27779072 5671 4294967295 134512640 135987407 3221224560 3221223248 134811839 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 6782 5671 364 364 0 6418 0
[pid=7336] vsize: 27128
Current children cumulated CPU time (s) 69.02
Current children cumulated vsize (Kb) 27128

[startup+80.005 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 7336
Raw data (/proc/7336/stat): 7336 (pb2sat) R 7335 7336 4060 0 -1 0 9000 0 0 0 7814 80 0 0 25 0 1 0 21223128 31059968 5755 4294967295 134512640 135987407 3221224560 3221223248 134811975 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7336/statm): 7583 5755 364 364 0 7219 0
[pid=7336] vsize: 30332
Current children cumulated CPU time (s) 78.94
Current children cumulated vsize (Kb) 30332
One traced child (pid=7336) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 89.8198
CPU time (s): 88.7125
CPU user time (s): 87.8606
CPU system time (s): 0.85187
CPU usage (%): 98.7672
Max. virtual memory (cumulated for all children) (Kb): 30332

Verifier Data

ERROR: no interpretation found !