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

Namemps-v2-20-10/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-core2586-950.opb
MD5SUMc9d9583d3d7a74a0edfae6842f5e5cad
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1258496000000000
Optimality of the best value was proved NO
Number of terms in the objective function 13545
Biggest coefficient in the objective function 53687091200000000000
Number of bits for the biggest coefficient in the objective function 66
Sum of the numbers in the objective function 226583943993884901376
Number of bits of the sum of numbers in the objective function 68
Biggest number in a constraint 10240000000000000000000
Number of bits of the biggest number in a constraint 74
Biggest sum of numbers in a constraint 10466583943993884672000
Number of bits of the biggest sum of numbers74
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1239.85
Number of variables13545
Total number of constraints15804
Number of constraints which are clauses2586
Number of constraints which are cardinality constraints (but not clauses)13217
Number of constraints which are nor clauses,nor cardinality constraints1
Minimum length of a constraint1
Maximum length of a constraint13545

Trace number 6380

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-20 06:26:49 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4272 boxname=wulflinc25 idbench=756 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  c9d9583d3d7a74a0edfae6842f5e5cad  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-core2586-950.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-core2586-950.opb
IDLAUNCH: 4272
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        891704 kB
Buffers:         22680 kB
Cached:          92304 kB
SwapCached:        888 kB
Active:          28968 kB
Inactive:        88688 kB
HighTotal:      131008 kB
HighFree:        35196 kB
LowTotal:       903652 kB
LowFree:        856508 kB
SwapTotal:     2097892 kB
SwapFree:      2096524 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5728 kB
Slab:            19484 kB
Committed_AS:    64148 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 06:27:13 (client local time) WITH STATUS 20 IN 23.5804 SECONDS
stats: 4272 7 23.5804 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-core2586-950.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.031995

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/28776/stat): 28776 (PBS4) R 28775 28776 4419 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1856395728 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/28776/statm): 239 2 232 232 0 7 0
[pid=28776] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-core2586-950.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-core2586-950.opb

[startup+10.0031 s]
Raw data (loadavg): 0.93 0.95 0.90 2/56 28776
Raw data (/proc/28776/stat): 28776 (PBS4) R 28775 28776 4419 0 -1 0 1081 0 0 0 993 4 0 0 25 0 1 0 1856395728 4866048 1011 4294967295 134512640 135450776 3221224560 3221222932 134524539 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/28776/statm): 1188 1011 232 232 0 956 0
[pid=28776] vsize: 4752
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 4752

[startup+20.0037 s]
Raw data (loadavg): 0.94 0.96 0.91 2/56 28776
Raw data (/proc/28776/stat): 28776 (PBS4) R 28775 28776 4419 0 -1 0 1341 0 0 0 1991 5 0 0 25 0 1 0 1856395728 5980160 1176 4294967295 134512640 135450776 3221224560 3221223072 134600407 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/28776/statm): 1460 1176 232 232 0 1228 0
[pid=28776] vsize: 5840
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 5840
One traced child (pid=28776) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 23.614
CPU time (s): 23.5804
CPU user time (s): 23.5164
CPU system time (s): 0.06399
CPU usage (%): 99.8579
Max. virtual memory (cumulated for all children) (Kb): 5840

Verifier Data

ERROR: no interpretation found !