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-blast-tlan3.ucl.opb
MD5SUM209c0a5b76d8c9837ec057672e22aacc
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 641
Number of bits of the biggest number in a constraint 10
Biggest sum of numbers in a constraint 2174
Number of bits of the biggest sum of numbers12
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.99669
Number of variables19944
Total number of constraints50842
Number of constraints which are clauses43898
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints6944
Minimum length of a constraint1
Maximum length of a constraint19

Trace number 9748

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-23 15:18:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8506 boxname=wulflinc30 idbench=302 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  209c0a5b76d8c9837ec057672e22aacc  /oldhome/oroussel/tmp/wulflinc30/normalized-blast-tlan3.ucl.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc30/normalized-blast-tlan3.ucl.opb
IDLAUNCH: 8506
/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:        942524 kB
Buffers:         11280 kB
Cached:          63588 kB
SwapCached:          0 kB
Active:          45008 kB
Inactive:        32712 kB
HighTotal:      131008 kB
HighFree:        63336 kB
LowTotal:       903652 kB
LowFree:        879188 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8788 kB
Committed_AS:    63644 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 15:18:18 (client local time) WITH STATUS 20 IN 15.7136 SECONDS
stats: 8506 7 15.7136 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c CONFLICT during preprocess 
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/7269/stat): 7269 (pb2sat) R 7268 7269 4004 0 -1 0 18 0 0 0 0 0 0 0 20 0 1 0 21168043 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/7269/statm): 373 2 364 364 0 9 0
[pid=7269] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-blast-tlan3.ucl.opb

[startup+10.001 s]
Raw data (loadavg): 0.78 0.94 0.98 2/55 7269
Raw data (/proc/7269/stat): 7269 (pb2sat) R 7268 7269 4004 0 -1 0 13936 0 0 0 964 34 0 0 25 0 1 0 21168043 42307584 8392 4294967295 134512640 135987407 3221224560 3221217904 134878060 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/7269/statm): 10329 8392 364 364 0 9965 0
[pid=7269] vsize: 41316
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 41316
One traced child (pid=7269) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 15.7354
CPU time (s): 15.7136
CPU user time (s): 15.0297
CPU system time (s): 0.683896
CPU usage (%): 99.8617
Max. virtual memory (cumulated for all children) (Kb): 41316

Verifier Data

ERROR: no interpretation found !