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.4.accl.ucl.opb
MD5SUM9bdada12198235de5708415559652a82
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 69
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 258
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 benchmark0.853869
Number of variables3939
Total number of constraints10412
Number of constraints which are clauses9740
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints672
Minimum length of a constraint1
Maximum length of a constraint13

Trace number 331

Launcher Data

LAUNCH ON wulflinc22 THE 2005-09-18 09:30:13 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=321 boxname=wulflinc22 idbench=321 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  9bdada12198235de5708415559652a82  /oldhome/oroussel/tmp/wulflinc22/normalized-ooo.burch_dill.4.accl.ucl.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc22/normalized-ooo.burch_dill.4.accl.ucl.opb
IDLAUNCH: 321
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        949088 kB
Buffers:         33252 kB
Cached:          24964 kB
SwapCached:        536 kB
Active:          53568 kB
Inactive:         7184 kB
HighTotal:      131008 kB
HighFree:       104020 kB
LowTotal:       903652 kB
LowFree:        845068 kB
SwapTotal:     2097892 kB
SwapFree:      2096832 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5856 kB
Slab:            19208 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 09:31:04 (client local time) WITH STATUS 20 IN 49.4825 SECONDS
stats: 321 7 49.4825 20

Solver Data

c INFO: OSL Context initialized.
c INFO: No cost function. Find solution and finish.
c Initial problem consists of 3939 variables and 10412 constraints.
c Using non-optimization problem switches.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 1.77
c After prepocess the problem consists of 3896 variables and 10305 constraints.
c Restart #1 #Var: 3896 #Dec: 5911 LB: 0 @ 3.673
c Restart #2 #Var: 3896 #Dec: 12809 LB: 0 @ 5.471
c Restart #3 #Var: 3896 #Dec: 21152 LB: 0 @ 10.328
c Restart #4 #Var: 3896 #Dec: 30909 LB: 0 @ 18.417
c Restart #5 #Var: 2445 #Dec: 33006 LB: 0 @ 29.673
c Restart #6 #Var: 2348 #Dec: 34603 LB: 0 @ 44.323
s UNSATISFIABLE
c Exit Code: 20
c Total time: 49.466 s

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/23039/stat): 23039 (bsolo) R 23038 23039 21452 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1840187256 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/23039/statm): 107 3 90 68 0 39 0
[pid=23039] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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open syscall for file mmx/libstdc++-libc6.2-2.so.3
open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++-libc6.2-2.so.3
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open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
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open syscall for file libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /lib/tls/libpthread.so.0
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open syscall for file libc.so.6
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open syscall for file /lib/tls/libc.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
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open syscall for file libgcc_s.so.1
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open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-ooo.burch_dill.4.accl.ucl.opb

[startup+10.0028 s]
Raw data (loadavg): 0.93 0.95 0.91 1/56 23039
Raw data (/proc/23039/stat): 23039 (bsolo) T 23038 23039 21452 0 -1 0 2840 0 0 0 891 40 0 0 25 0 1 0 1840187256 14757888 2751 4294967295 134512640 134736556 3221224560 3221223452 1077781665 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/23039/statm): 3603 2751 1116 68 0 3535 0
[pid=23039] vsize: 14412
Current children cumulated CPU time (s) 9.31
Current children cumulated vsize (Kb) 14412

[startup+20.0035 s]
Raw data (loadavg): 0.94 0.95 0.91 2/56 23039
Raw data (/proc/23039/stat): 23039 (bsolo) R 23038 23039 21452 0 -1 0 3091 0 0 0 1840 58 0 0 25 0 1 0 1840187256 15831040 3002 4294967295 134512640 134736556 3221224560 3221223200 134544649 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/23039/statm): 3865 3002 1116 68 0 3797 0
[pid=23039] vsize: 15460
Current children cumulated CPU time (s) 18.98
Current children cumulated vsize (Kb) 15460

[startup+30.0042 s]
Raw data (loadavg): 0.95 0.95 0.91 2/56 23039
Raw data (/proc/23039/stat): 23039 (bsolo) R 23038 23039 21452 0 -1 0 3462 0 0 0 2828 63 0 0 25 0 1 0 1840187256 17313792 3373 4294967295 134512640 134736556 3221224560 3221223164 134554110 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/23039/statm): 4227 3373 1116 68 0 4159 0
[pid=23039] vsize: 16908
Current children cumulated CPU time (s) 28.91
Current children cumulated vsize (Kb) 16908

[startup+40.004 s]
Raw data (loadavg): 0.95 0.95 0.91 2/56 23039
Raw data (/proc/23039/stat): 23039 (bsolo) R 23038 23039 21452 0 -1 0 3685 0 0 0 3819 67 0 0 25 0 1 0 1840187256 18259968 3596 4294967295 134512640 134736556 3221224560 3221223120 134543554 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/23039/statm): 4458 3596 1116 68 0 4390 0
[pid=23039] vsize: 17832
Current children cumulated CPU time (s) 38.86
Current children cumulated vsize (Kb) 17832

[startup+50.0047 s]
Raw data (loadavg): 0.96 0.95 0.91 2/56 23039
Raw data (/proc/23039/stat): 23039 (bsolo) R 23038 23039 21452 0 -1 0 3885 0 0 0 4811 71 0 0 25 0 1 0 1840187256 19070976 3796 4294967295 134512640 134736556 3221224560 3221223136 134543155 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/23039/statm): 4656 3796 1116 68 0 4588 0
[pid=23039] vsize: 18624
Current children cumulated CPU time (s) 48.82
Current children cumulated vsize (Kb) 18624
One traced child (pid=23039) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 50.6626
CPU time (s): 49.4825
CPU user time (s): 48.7596
CPU system time (s): 0.72289
CPU usage (%): 97.6706
Max. virtual memory (cumulated for all children) (Kb): 18624

Verifier Data

ERROR: no interpretation found !