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/MIPLIB/miplib3/normalized-mps-v2-20-10-mod008.opb
MD5SUM581d778a36086562107993896110e0a2
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 361
Optimality of the best value was proved NO
Number of terms in the objective function 319
Biggest coefficient in the objective function 87
Number of bits for the biggest coefficient in the objective function 7
Sum of the numbers in the objective function 23554
Number of bits of the sum of numbers in the objective function 15
Biggest number in a constraint 22000
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 1027256
Number of bits of the biggest sum of numbers20
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.06
Number of variables319
Total number of constraints325
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)319
Number of constraints which are nor clauses,nor cardinality constraints6
Minimum length of a constraint1
Maximum length of a constraint231

Trace number 10122

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-23 17:03:35 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8879 boxname=wulflinc30 idbench=675 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  581d778a36086562107993896110e0a2  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-mod008.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-mod008.opb
IDLAUNCH: 8879
/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:        939740 kB
Buffers:         12240 kB
Cached:          65824 kB
SwapCached:          0 kB
Active:          42956 kB
Inactive:        37980 kB
HighTotal:      131008 kB
HighFree:        61208 kB
LowTotal:       903652 kB
LowFree:        878532 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8388 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:05:24 (client local time) WITH STATUS 1 IN 108.556 SECONDS
stats: 8879 7 108.556 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc

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/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21801406 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 373 2 364 364 0 9 0
[pid=9840] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-mod008.opb

[startup+10.0015 s]
Raw data (loadavg): 0.93 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 32353 0 0 0 929 67 0 0 25 0 1 0 21801406 100126720 21202 4294967295 134512640 135987407 3221224560 3221151512 134558498 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 24445 21202 364 364 0 24081 0
[pid=9840] vsize: 97780
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 97780

[startup+20.0023 s]
Raw data (loadavg): 0.94 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 63400 0 0 0 1866 127 0 0 25 0 1 0 21801406 197599232 41038 4294967295 134512640 135987407 3221224560 3221150492 134639872 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 48242 41038 364 364 0 47878 0
[pid=9840] vsize: 192968
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 192968

[startup+30.0031 s]
Raw data (loadavg): 0.95 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 105735 0 0 0 2777 213 0 0 25 0 1 0 21801406 328675328 61176 4294967295 134512640 135987407 3221224560 3221160720 134856611 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 80243 61176 364 364 0 79879 0
[pid=9840] vsize: 320972
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 320972

[startup+40.0029 s]
Raw data (loadavg): 0.96 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 123666 0 0 0 3737 250 0 0 25 0 1 0 21801406 386580480 78889 4294967295 134512640 135987407 3221224560 3221163232 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 94380 78889 364 364 0 94016 0
[pid=9840] vsize: 377520
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 377520

[startup+50.0037 s]
Raw data (loadavg): 0.96 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 153675 0 0 0 4675 309 0 0 25 0 1 0 21801406 573935616 108256 4294967295 134512640 135987407 3221224560 3221170144 134856505 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 140121 108256 364 364 0 139757 0
[pid=9840] vsize: 560484
Current children cumulated CPU time (s) 49.84
Current children cumulated vsize (Kb) 560484

[startup+60.0035 s]
Raw data (loadavg): 0.97 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 208103 0 0 0 5558 422 0 0 25 0 1 0 21801406 650895360 118943 4294967295 134512640 135987407 3221224560 3221177264 135486757 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 158910 118943 364 364 0 158546 0
[pid=9840] vsize: 635640
Current children cumulated CPU time (s) 59.8
Current children cumulated vsize (Kb) 635640

[startup+70.0043 s]
Raw data (loadavg): 0.97 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 224323 0 0 0 6522 457 0 0 25 0 1 0 21801406 707067904 134964 4294967295 134512640 135987407 3221224560 3221174620 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 172624 134964 364 364 0 172260 0
[pid=9840] vsize: 690496
Current children cumulated CPU time (s) 69.79
Current children cumulated vsize (Kb) 690496

[startup+80.0051 s]
Raw data (loadavg): 0.98 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 242913 0 0 0 7483 493 0 0 25 0 1 0 21801406 732905472 153327 4294967295 134512640 135987407 3221224560 3221164044 135500012 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 178932 153327 364 364 0 178568 0
[pid=9840] vsize: 715728
Current children cumulated CPU time (s) 79.76
Current children cumulated vsize (Kb) 715728

[startup+90.0049 s]
Raw data (loadavg): 0.98 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 261649 0 0 0 8446 528 0 0 25 0 1 0 21801406 759046144 171829 4294967295 134512640 135987407 3221224560 3221168928 134537552 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 185314 171829 364 364 0 184950 0
[pid=9840] vsize: 741256
Current children cumulated CPU time (s) 89.74
Current children cumulated vsize (Kb) 741256

[startup+100.006 s]
Raw data (loadavg): 0.98 0.98 0.93 2/55 9840
Raw data (/proc/9840/stat): 9840 (pb2sat) R 9839 9840 4004 0 -1 0 276432 0 0 0 9416 556 0 0 25 0 1 0 21801406 830107648 186428 4294967295 134512640 135987407 3221224560 3221194284 135499893 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9840/statm): 202663 186428 364 364 0 202299 0
[pid=9840] vsize: 810652
Current children cumulated CPU time (s) 99.72
Current children cumulated vsize (Kb) 810652
One traced child (pid=9840) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 108.838
CPU time (s): 108.556
CPU user time (s): 102.548
CPU system time (s): 6.00809
CPU usage (%): 99.7412
Max. virtual memory (cumulated for all children) (Kb): 810652

Verifier Data

ERROR: no interpretation found !