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/plato.asu.edu/pub/unibo/normalized-mps-v2-13-7-blp-ir98.opb
MD5SUMaf50f6e3dbb65aa298a499a107f218c7
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 21
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 2097151
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 81920000000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 18861949529571
Number of bits of the biggest sum of numbers45
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables6938
Total number of constraints6560
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6451
Number of constraints which are nor clauses,nor cardinality constraints109
Minimum length of a constraint1
Maximum length of a constraint6052

Trace number 10589

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-23 19:12:14 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9343 boxname=wulflinc4 idbench=1139 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  af50f6e3dbb65aa298a499a107f218c7  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-blp-ir98.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-blp-ir98.opb
IDLAUNCH: 9343
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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:        950856 kB
Buffers:           488 kB
Cached:          65812 kB
SwapCached:          0 kB
Active:          21572 kB
Inactive:        47628 kB
HighTotal:      131008 kB
HighFree:        60788 kB
LowTotal:       903652 kB
LowFree:        890068 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8808 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 19:13:51 (client local time) WITH STATUS 0 IN 93.8557 SECONDS
stats: 9343 7 93.8557 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 22629103 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 373 2 364 364 0 9 0
[pid=11158] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-blp-ir98.opb

[startup+10.0027 s]
Raw data (loadavg): 0.93 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 24137 0 0 0 943 54 0 0 25 0 1 0 22629103 72900608 13052 4294967295 134512640 135987407 3221224560 3220653200 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 17798 13052 364 364 0 17434 0
[pid=11158] vsize: 71192
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 71192

[startup+20.0035 s]
Raw data (loadavg): 0.94 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 50863 0 0 0 1880 116 0 0 25 0 1 0 22629103 159678464 28563 4294967295 134512640 135987407 3221224560 3221221012 134562648 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 38984 28563 364 364 0 38620 0
[pid=11158] vsize: 155936
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 155936

[startup+30.0044 s]
Raw data (loadavg): 0.95 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 90488 0 0 0 2797 196 0 0 25 0 1 0 22629103 276144128 45980 4294967295 134512640 135987407 3221224560 3221146268 134669203 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 67418 45980 364 364 0 67054 0
[pid=11158] vsize: 269672
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 269672

[startup+40.0053 s]
Raw data (loadavg): 0.96 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 104259 0 0 0 3763 230 0 0 25 0 1 0 22629103 313618432 59524 4294967295 134512640 135987407 3221224560 3221108816 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 76567 59524 364 364 0 76203 0
[pid=11158] vsize: 306268
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 306268

[startup+50.0061 s]
Raw data (loadavg): 0.96 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 118203 0 0 0 4727 264 0 0 25 0 1 0 22629103 320151552 73241 4294967295 134512640 135987407 3221224560 3219188072 134865857 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 78162 73241 364 364 0 77798 0
[pid=11158] vsize: 312648
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 312648

[startup+60.007 s]
Raw data (loadavg): 0.97 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 185889 0 0 0 5581 405 0 0 25 0 1 0 22629103 563785728 96741 4294967295 134512640 135987407 3221224560 3219196112 134856445 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 137643 96741 364 364 0 137279 0
[pid=11158] vsize: 550572
Current children cumulated CPU time (s) 59.86
Current children cumulated vsize (Kb) 550572

[startup+70.0068 s]
Raw data (loadavg): 0.97 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 205154 0 0 0 6538 446 0 0 25 0 1 0 22629103 628547584 115760 4294967295 134512640 135987407 3221224560 3219200252 134636956 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 153454 115760 364 364 0 153090 0
[pid=11158] vsize: 613816
Current children cumulated CPU time (s) 69.84
Current children cumulated vsize (Kb) 613816

[startup+80.0077 s]
Raw data (loadavg): 0.98 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 226883 0 0 0 7492 489 0 0 25 0 1 0 22629103 663236608 137212 4294967295 134512640 135987407 3221224560 3219203808 134876447 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 161923 137212 364 364 0 161559 0
[pid=11158] vsize: 647692
Current children cumulated CPU time (s) 79.81
Current children cumulated vsize (Kb) 647692

[startup+90.0086 s]
Raw data (loadavg): 0.98 0.99 0.97 2/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) R 11157 11158 4060 0 -1 0 248297 0 0 0 8447 531 0 0 25 0 1 0 22629103 697683968 158353 4294967295 134512640 135987407 3221224560 3219190508 134636994 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11158/statm): 170333 158353 364 364 0 169969 0
[pid=11158] vsize: 681332
Current children cumulated CPU time (s) 89.78
Current children cumulated vsize (Kb) 681332



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+93.7436 s]
Raw data (loadavg): 0.98 0.99 0.97 1/55 11158
Raw data (/proc/11158/stat): 11158 (pb2sat) T 11157 11158 4060 0 -1 0 256089 0 0 0 8805 545 0 0 25 0 1 0 22629103 994828288 166046 4294967295 134512640 135987407 3221224560 3219192928 135544035 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/11158/statm): 242878 166046 364 364 0 242514 0
[pid=11158] vsize: 971512
Current children cumulated CPU time (s) 93.5
Current children cumulated vsize (Kb) 971512

Sending SIGTERM to -11158
Sleeping 2 seconds
Sending SIGKILL to -11158
One traced child (pid=11158) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 96.0908
CPU time (s): 93.8557
CPU user time (s): 88.0636
CPU system time (s): 5.79212
CPU usage (%): 97.674
Max. virtual memory (cumulated for all children) (Kb): 971512

Verifier Data

ERROR: no interpretation found !