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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-stair.opb
MD5SUM07f65f29ee2937de43752221c6dbdf88
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
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 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 516561567744
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 3615347139525
Number of bits of the biggest sum of numbers42
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark158.962
Number of variables7646
Total number of constraints362
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints362
Minimum length of a constraint10
Maximum length of a constraint540

Trace number 10319

Launcher Data

LAUNCH ON wulflinc6 THE 2005-09-23 17:50:22 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9067 boxname=wulflinc6 idbench=863 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  07f65f29ee2937de43752221c6dbdf88  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-13-7-stair.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-13-7-stair.opb
IDLAUNCH: 9067
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.158
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	: 2
cpu MHz		: 451.158
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:        918992 kB
Buffers:         13584 kB
Cached:          84608 kB
SwapCached:          0 kB
Active:          42540 kB
Inactive:        58568 kB
HighTotal:      131008 kB
HighFree:        42924 kB
LowTotal:       903652 kB
LowFree:        876068 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8912 kB
Committed_AS:    63640 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:52:15 (client local time) WITH STATUS 1 IN 113.193 SECONDS
stats: 9067 7 113.193 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/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22136461 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 373 2 364 364 0 9 0
[pid=10214] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-13-7-stair.opb

[startup+10.0018 s]
Raw data (loadavg): 0.85 0.91 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 31451 0 0 0 932 63 0 0 25 0 1 0 22136461 98922496 20312 4294967295 134512640 135987407 3221224560 3221153768 135486800 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 24151 20312 364 364 0 23787 0
[pid=10214] vsize: 96604
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 96604

[startup+20.0016 s]
Raw data (loadavg): 0.87 0.91 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 61985 0 0 0 1870 122 0 0 25 0 1 0 22136461 194883584 39635 4294967295 134512640 135987407 3221224560 3221150704 134878022 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 47579 39635 364 364 0 47215 0
[pid=10214] vsize: 190316
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 190316

[startup+30.0023 s]
Raw data (loadavg): 0.89 0.91 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 104293 0 0 0 2786 204 0 0 25 0 1 0 22136461 326643712 59749 4294967295 134512640 135987407 3221224560 3221151856 134887896 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 79747 59749 364 364 0 79383 0
[pid=10214] vsize: 318988
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 318988

[startup+40.0021 s]
Raw data (loadavg): 0.91 0.91 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 122215 0 0 0 3749 238 0 0 25 0 1 0 22136461 386035712 77460 4294967295 134512640 135987407 3221224560 3221152804 134537591 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 94247 77460 364 364 0 93883 0
[pid=10214] vsize: 376988
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 376988

[startup+50.0028 s]
Raw data (loadavg): 0.92 0.92 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 140894 0 0 0 4710 275 0 0 25 0 1 0 22136461 411398144 95913 4294967295 134512640 135987407 3221224560 3221155964 135486794 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 100439 95913 364 364 0 100075 0
[pid=10214] vsize: 401756
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 401756

[startup+60.0026 s]
Raw data (loadavg): 0.93 0.92 0.90 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 205700 0 0 0 5576 404 0 0 25 0 1 0 22136461 647815168 116573 4294967295 134512640 135987407 3221224560 3221152476 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 158158 116573 364 364 0 157794 0
[pid=10214] vsize: 632632
Current children cumulated CPU time (s) 59.8
Current children cumulated vsize (Kb) 632632

[startup+70.0033 s]
Raw data (loadavg): 0.94 0.92 0.91 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 221637 0 0 0 6543 435 0 0 25 0 1 0 22136461 704118784 132321 4294967295 134512640 135987407 3221224560 3221157184 134537371 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 171904 132321 364 364 0 171540 0
[pid=10214] vsize: 687616
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 687616

[startup+80.0041 s]
Raw data (loadavg): 0.95 0.92 0.91 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 239878 0 0 0 7507 470 0 0 25 0 1 0 22136461 729743360 150346 4294967295 134512640 135987407 3221224560 3221158192 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 178160 150346 364 364 0 177796 0
[pid=10214] vsize: 712640
Current children cumulated CPU time (s) 79.77
Current children cumulated vsize (Kb) 712640

[startup+90.0038 s]
Raw data (loadavg): 0.96 0.92 0.91 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 257812 0 0 0 8472 503 0 0 25 0 1 0 22136461 754511872 168065 4294967295 134512640 135987407 3221224560 3221158524 134878539 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 184207 168065 364 364 0 183843 0
[pid=10214] vsize: 736828
Current children cumulated CPU time (s) 89.75
Current children cumulated vsize (Kb) 736828

[startup+100.005 s]
Raw data (loadavg): 0.96 0.93 0.91 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 271622 0 0 0 9444 529 0 0 25 0 1 0 22136461 823398400 181709 4294967295 134512640 135987407 3221224560 3221157376 134892737 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 201025 181709 364 364 0 200661 0
[pid=10214] vsize: 804100
Current children cumulated CPU time (s) 99.73
Current children cumulated vsize (Kb) 804100

[startup+110.005 s]
Raw data (loadavg): 0.97 0.93 0.91 2/55 10214
Raw data (/proc/10214/stat): 10214 (pb2sat) R 10213 10214 4060 0 -1 0 282333 0 0 0 10409 563 0 0 25 0 1 0 22136461 477921280 116143 4294967295 134512640 135987407 3221224560 3221223224 135477320 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10214/statm): 116680 116143 364 364 0 116316 0
[pid=10214] vsize: 466720
Current children cumulated CPU time (s) 109.72
Current children cumulated vsize (Kb) 466720
One traced child (pid=10214) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 113.47
CPU time (s): 113.193
CPU user time (s): 107.307
CPU system time (s): 5.8861
CPU usage (%): 99.7558
Max. virtual memory (cumulated for all children) (Kb): 804100

Verifier Data

ERROR: no interpretation found !