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/miplib2003/normalized-mps-v2-20-10-dano3mip.opb
MD5SUM07b8540d5ec185750fee03977f8da675
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 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 67108864000
Number of bits of the biggest number in a constraint 36
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables399966
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)600
Number of constraints which are nor clauses,nor cardinality constraints3178
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 10007

Launcher Data

LAUNCH ON wulflinc10 THE 2005-09-23 16:29:48 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8766 boxname=wulflinc10 idbench=562 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  07b8540d5ec185750fee03977f8da675  /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-20-10-dano3mip.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-20-10-dano3mip.opb
IDLAUNCH: 8766
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.193
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		: 451.193
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:        896812 kB
Buffers:         11600 kB
Cached:         108420 kB
SwapCached:          0 kB
Active:          85668 kB
Inactive:        37232 kB
HighTotal:      131008 kB
HighFree:        18592 kB
LowTotal:       903652 kB
LowFree:        878220 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             9188 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:31:20 (client local time) WITH STATUS 0 IN 89.3274 SECONDS
stats: 8766 7 89.3274 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/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21639743 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 373 2 364 364 0 9 0
[pid=7468] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-20-10-dano3mip.opb

[startup+10.0019 s]
Raw data (loadavg): 0.95 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 26689 0 0 0 935 63 0 0 25 0 1 0 21639743 81473536 15561 4294967295 134512640 135987407 3221224560 3221175184 134892990 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 19891 15561 364 364 0 19527 0
[pid=7468] vsize: 79564
Current children cumulated CPU time (s) 9.98
Current children cumulated vsize (Kb) 79564

[startup+20.0025 s]
Raw data (loadavg): 0.96 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 55198 0 0 0 1865 131 0 0 25 0 1 0 21639743 159457280 32819 4294967295 134512640 135987407 3221224560 3221141740 134635332 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 38930 32819 364 364 0 38566 0
[pid=7468] vsize: 155720
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 155720

[startup+30.003 s]
Raw data (loadavg): 0.96 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 94990 0 0 0 2774 219 0 0 25 0 1 0 21639743 309882880 50398 4294967295 134512640 135987407 3221224560 3221099568 134866102 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 75655 50398 364 364 0 75291 0
[pid=7468] vsize: 302620
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 302620

[startup+40.0036 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 111995 0 0 0 3732 261 0 0 25 0 1 0 21639743 315695104 67121 4294967295 134512640 135987407 3221224560 3221109628 135499903 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 77074 67121 364 364 0 76710 0
[pid=7468] vsize: 308296
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 308296

[startup+50.0041 s]
Raw data (loadavg): 0.97 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 170353 0 0 0 4607 381 0 0 25 0 1 0 21639743 645914624 105864 4294967295 134512640 135987407 3221224560 3221067152 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 157694 105864 364 364 0 157330 0
[pid=7468] vsize: 630776
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 630776

[startup+60.0047 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 191622 0 0 0 5553 435 0 0 25 0 1 0 21639743 583397376 102326 4294967295 134512640 135987407 3221224560 3221187264 134865868 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 142431 102326 364 364 0 142067 0
[pid=7468] vsize: 569724
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 569724

[startup+70.0043 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 208506 0 0 0 6511 476 0 0 25 0 1 0 21639743 588939264 118929 4294967295 134512640 135987407 3221224560 3221105740 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 143784 118929 364 364 0 143420 0
[pid=7468] vsize: 575136
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 575136

[startup+80.0048 s]
Raw data (loadavg): 0.98 0.96 0.94 2/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) R 7467 7468 4061 0 -1 0 223910 0 0 0 7468 519 0 0 25 0 1 0 21639743 644272128 134077 4294967295 134512640 135987407 3221224560 3221097184 134877631 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 157293 134077 364 364 0 156929 0
[pid=7468] vsize: 629172
Current children cumulated CPU time (s) 79.87
Current children cumulated vsize (Kb) 629172



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+89.0898 s]
Raw data (loadavg): 0.98 0.96 0.94 1/55 7468
Raw data (/proc/7468/stat): 7468 (pb2sat) T 7467 7468 4061 0 -1 0 242590 0 0 0 8332 561 0 0 25 0 1 0 21639743 943816704 152344 4294967295 134512640 135987407 3221224560 3221018332 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/7468/statm): 230424 152344 364 364 0 230060 0
[pid=7468] vsize: 921696
Current children cumulated CPU time (s) 88.93
Current children cumulated vsize (Kb) 921696

Sending SIGTERM to -7468
Sleeping 2 seconds

[startup+90.0054 s]
Raw data (loadavg): 0.90 0.95 0.94 1/56 7469
Raw data (/proc/7468/stat): 7468 (pb2sat) S 7467 7468 4061 0 -1 0 242591 0 0 0 8340 561 0 0 25 0 1 0 21639743 943816704 152345 4294967295 134512640 135987407 3221224560 3221017032 135549753 0 16384 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7468/statm): 230424 152345 364 364 0 230060 0
[pid=7468] vsize: 921696
Current children cumulated CPU time (s) 89.01
Current children cumulated vsize (Kb) 921696
Sending SIGKILL to -7468
One traced child (pid=7468) 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): 91.406
CPU time (s): 89.3274
CPU user time (s): 83.4023
CPU system time (s): 5.9251
CPU usage (%): 97.726
Max. virtual memory (cumulated for all children) (Kb): 921696

Verifier Data

ERROR: no interpretation found !