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-elf.rf10.ucl.opb
MD5SUM59052c182e2f0c4ec9aef432e4002ed0
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 67
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 256
Number of bits of the biggest sum of numbers9
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark21.3408
Number of variables55066
Total number of constraints160619
Number of constraints which are clauses156587
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints4032
Minimum length of a constraint1
Maximum length of a constraint13

Trace number 2434

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-18 19:53:44 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3830 boxname=wulflinc4 idbench=314 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  59052c182e2f0c4ec9aef432e4002ed0  /oldhome/oroussel/tmp/wulflinc4/normalized-elf.rf10.ucl.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc4/normalized-elf.rf10.ucl.opb
IDLAUNCH: 3830
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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	: 2
cpu MHz		: 451.169
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        914248 kB
Buffers:         34972 kB
Cached:          61104 kB
SwapCached:        960 kB
Active:          69820 kB
Inactive:        28928 kB
HighTotal:      131008 kB
HighFree:        67452 kB
LowTotal:       903652 kB
LowFree:        846796 kB
SwapTotal:     2097136 kB
SwapFree:      2095628 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5692 kB
Slab:            15888 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 19:54:35 (client local time) WITH STATUS 20 IN 50.3233 SECONDS
stats: 3830 7 50.3233 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc4/normalized-elf.rf10.ucl.opb ......
s UNSATISFIABLE
c Done, CPU Time=42.6555

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/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1785686551 978944 2 4294967295 134512640 135450776 3221224576 3221224576 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/16893/statm): 239 2 232 232 0 7 0
[pid=16893] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-elf.rf10.ucl.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-elf.rf10.ucl.opb

[startup+10.0026 s]
Raw data (loadavg): 0.94 0.98 0.94 2/56 16893
Raw data (/proc/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 7518 0 0 0 958 28 0 0 25 0 1 0 1785686551 27406336 5799 4294967295 134512640 135450776 3221224576 3221223296 134539407 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16893/statm): 6691 5799 232 232 0 6459 0
[pid=16893] vsize: 26764
Current children cumulated CPU time (s) 9.86
Current children cumulated vsize (Kb) 26764

[startup+20.0025 s]
Raw data (loadavg): 0.95 0.98 0.94 2/56 16893
Raw data (/proc/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 8322 0 0 0 1934 35 0 0 25 0 1 0 1785686551 34828288 6504 4294967295 134512640 135450776 3221224576 3221223296 134539507 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16893/statm): 8503 6504 232 232 0 8271 0
[pid=16893] vsize: 34012
Current children cumulated CPU time (s) 19.69
Current children cumulated vsize (Kb) 34012

[startup+30.0033 s]
Raw data (loadavg): 0.95 0.98 0.94 2/56 16893
Raw data (/proc/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 8704 0 0 0 2923 41 0 0 25 0 1 0 1785686551 35688448 6787 4294967295 134512640 135450776 3221224576 3221223296 134539307 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16893/statm): 8713 6787 232 232 0 8481 0
[pid=16893] vsize: 34852
Current children cumulated CPU time (s) 29.64
Current children cumulated vsize (Kb) 34852

[startup+40.0042 s]
Raw data (loadavg): 0.96 0.98 0.94 2/56 16893
Raw data (/proc/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 8947 0 0 0 3916 44 0 0 25 0 1 0 1785686551 35688448 6922 4294967295 134512640 135450776 3221224576 3221223500 134530772 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16893/statm): 8713 6922 232 232 0 8481 0
[pid=16893] vsize: 34852
Current children cumulated CPU time (s) 39.6
Current children cumulated vsize (Kb) 34852

[startup+50.004 s]
Raw data (loadavg): 0.97 0.98 0.94 2/56 16893
Raw data (/proc/16893/stat): 16893 (PBS4) R 16892 16893 6847 0 -1 0 9229 0 0 0 4908 48 0 0 25 0 1 0 1785686551 36245504 7171 4294967295 134512640 135450776 3221224576 3221223424 134540022 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16893/statm): 8849 7171 232 232 0 8617 0
[pid=16893] vsize: 35396
Current children cumulated CPU time (s) 49.56
Current children cumulated vsize (Kb) 35396
One traced child (pid=16893) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 50.7653
CPU time (s): 50.3233
CPU user time (s): 49.8214
CPU system time (s): 0.501923
CPU usage (%): 99.1294
Max. virtual memory (cumulated for all children) (Kb): 35396

Verifier Data

ERROR: no interpretation found !