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/MIPLIB/miplib/normalized-mps-v2-13-7-rentacar.opb
MD5SUM173fbcf88732da3f8b39402ca13ca263
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 3540
Biggest coefficient in the objective function 26214400000
Number of bits for the biggest coefficient in the objective function 35
Sum of the numbers in the objective function 6794775437175
Number of bits of the sum of numbers in the objective function 43
Biggest number in a constraint 26214400000
Number of bits of the biggest number in a constraint 35
Biggest sum of numbers in a constraint 13700458527437
Number of bits of the biggest sum of numbers44
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark4.17836
Number of variables176588
Total number of constraints6965
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)55
Number of constraints which are nor clauses,nor cardinality constraints6910
Minimum length of a constraint1
Maximum length of a constraint40360

Trace number 10382

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-23 18:01:10 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9142 boxname=wulflinc3 idbench=938 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  173fbcf88732da3f8b39402ca13ca263  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-13-7-rentacar.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-13-7-rentacar.opb
IDLAUNCH: 9142
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.228
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		: 451.228
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:        911204 kB
Buffers:         13400 kB
Cached:          92476 kB
SwapCached:          0 kB
Active:          60212 kB
Inactive:        48572 kB
HighTotal:      131008 kB
HighFree:        34216 kB
LowTotal:       903652 kB
LowFree:        876988 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              36 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9104 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 18:02:41 (client local time) WITH STATUS 0 IN 88.4496 SECONDS
stats: 9142 7 88.4496 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/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22202677 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9913/statm): 373 2 364 364 0 9 0
[pid=9913] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-13-7-rentacar.opb

[startup+10.0017 s]
Raw data (loadavg): 1.02 1.01 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 27188 0 0 0 936 61 0 0 25 0 1 0 22202677 83742720 16059 4294967295 134512640 135987407 3221224560 3221204208 134637036 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 20445 16059 364 364 0 20081 0
[pid=9913] vsize: 81780
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 81780

[startup+20.0025 s]
Raw data (loadavg): 1.02 1.01 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 55339 0 0 0 1873 122 0 0 25 0 1 0 22202677 161366016 32966 4294967295 134512640 135987407 3221224560 3220934576 134856487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 39396 32966 364 364 0 39032 0
[pid=9913] vsize: 157584
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 157584

[startup+30.0024 s]
Raw data (loadavg): 1.01 1.01 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 95307 0 0 0 2788 204 0 0 25 0 1 0 22202677 312467456 50726 4294967295 134512640 135987407 3221224560 3221109732 135478476 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 76286 50726 364 364 0 75922 0
[pid=9913] vsize: 305144
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 305144

[startup+40.0032 s]
Raw data (loadavg): 1.01 1.01 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 111964 0 0 0 3746 246 0 0 25 0 1 0 22202677 317333504 67107 4294967295 134512640 135987407 3221224560 3221138972 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 77474 67107 364 364 0 77110 0
[pid=9913] vsize: 309896
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 309896

[startup+50.004 s]
Raw data (loadavg): 1.01 1.01 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 166117 0 0 0 4635 353 0 0 25 0 1 0 22202677 647282688 101642 4294967295 134512640 135987407 3221224560 3221217040 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 158028 101646 364 364 0 157664 0
[pid=9913] vsize: 632112
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 632112

[startup+60.0039 s]
Raw data (loadavg): 1.01 1.00 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 191491 0 0 0 5572 417 0 0 25 0 1 0 22202677 585170944 102204 4294967295 134512640 135987407 3221224560 3221221952 134615191 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 142864 102204 364 364 0 142500 0
[pid=9913] vsize: 571456
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 571456

[startup+70.0037 s]
Raw data (loadavg): 1.01 1.00 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 208890 0 0 0 6527 461 0 0 25 0 1 0 22202677 591523840 119310 4294967295 134512640 135987407 3221224560 3221207772 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 144415 119311 364 364 0 144051 0
[pid=9913] vsize: 577660
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 577660

[startup+80.0036 s]
Raw data (loadavg): 1.00 1.00 0.94 2/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) R 9912 9913 4060 0 -1 0 225940 0 0 0 7481 506 0 0 25 0 1 0 22202677 649424896 136071 4294967295 134512640 135987407 3221224560 3221185520 134877628 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 158551 136071 364 364 0 158187 0
[pid=9913] vsize: 634204
Current children cumulated CPU time (s) 79.87
Current children cumulated vsize (Kb) 634204



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+88.2013 s]
Raw data (loadavg): 1.00 1.00 0.94 1/55 9917
Raw data (/proc/9913/stat): 9913 (pb2sat) T 9912 9913 4060 0 -1 0 240577 0 0 0 8265 540 0 0 25 0 1 0 22202677 943833088 150361 4294967295 134512640 135987407 3221224560 3221179948 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9913/statm): 230428 150361 364 364 0 230064 0
[pid=9913] vsize: 921712
Current children cumulated CPU time (s) 88.05
Current children cumulated vsize (Kb) 921712

Sending SIGTERM to -9913
Sleeping 2 seconds

[startup+90.0044 s]
Raw data (loadavg): 0.92 0.98 0.94 1/56 9918
Raw data (/proc/9913/stat): 9913 (pb2sat) S 9912 9913 4060 0 -1 0 240578 0 0 0 8273 540 0 0 25 0 1 0 22202677 943833088 150362 4294967295 134512640 135987407 3221224560 3221178744 135549753 0 16384 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9913/statm): 230428 150362 364 364 0 230064 0
[pid=9913] vsize: 921712
Current children cumulated CPU time (s) 88.13
Current children cumulated vsize (Kb) 921712
Sending SIGKILL to -9913
One traced child (pid=9913) 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): 90.5136
CPU time (s): 88.4496
CPU user time (s): 82.7334
CPU system time (s): 5.71613
CPU usage (%): 97.7197
Max. virtual memory (cumulated for all children) (Kb): 921712

Verifier Data

ERROR: no interpretation found !