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).
  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

Namenormalized-opb/mps-v2-13-7/www.csit.fsu.edu/~burkardt/datasets/mps/normalized-mps-v2-13-7-nazareth.opb
MD5SUM25b0f49e8e3ab43f9f405cabc9317ea8
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -1048575
Optimality of the best value was proved NO
Number of terms in the objective function 55
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 3162109
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 5244800
Number of bits of the biggest number in a constraint 23
Biggest sum of numbers in a constraint 19924855
Number of bits of the biggest sum of numbers25
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.008998
Number of variables55
Total number of constraints3
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 constraints3
Minimum length of a constraint14
Maximum length of a constraint41

Trace number 33839 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-05-27 17:11:05 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=20392 boxname=wulflinc12 idbench=1569 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  25b0f49e8e3ab43f9f405cabc9317ea8  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-nazareth.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-nazareth.opb 0
IDLAUNCH: 20392
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        760692 kB
Buffers:         27172 kB
Cached:         226124 kB
SwapCached:        480 kB
Active:          33880 kB
Inactive:       221728 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        760440 kB
SwapTotal:     2097136 kB
SwapFree:      2096024 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            12688 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-27 17:11:06 (client local time) WITH STATUS 30 IN 0.342946 SECONDS
stats: 20392 0 0.342946 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0  (#equs: 0)
Nr of vars set: 0  (#equs: 0)
#decisions: 29;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant:  2959871 (202237:>=*);
#decisions: 27;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  2960127 (201981:>=*);
#decisions: 20;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  2960191 (201917:>=*);
#decisions: 19;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  2960223 (201885:>=*);
#decisions: 29;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  2964319 (197789:>=*);
#decisions: 13;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  2964320 (197788:>=*);
#decisions: 22;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3029856 (132252:>=*);
#decisions: 28;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3160928 (1180:>=*);
#decisions: 8;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3160932 (1176:>=*);
#decisions: 15;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3161060 (1048:>=*);
#decisions: 23;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3162084 (24:>=*);
#decisions: 9;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3162100 (8:>=*);
#decisions: 7;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 4, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  3162108 (0:>=*);
Model found with constant:
  (pushed:) 3162100 (8:>=*)

With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 46  (#equs: 0)
Time taken in milliseconds: 190
times:
0m0.020s 0m0.007s
0m0.159s 0m0.052s
v -CLNAM1_bit_7 -CLNAM1_bit_6 -CLNAM1_bit_5 -CLNAM1_bit_4 -CLNAM1_bit_3 -CLNAM1_bit_2 -CLNAM1_bit_1 -CLNAM1_bit0 -CLNAM1_bit1 -CLNAM1_bit2 -CLNAM1_bit3 -CLNAM1_bit4 -CLNAM1_bit5 -CLNAM1_bit6  CLNAM2_bit_7  CLNAM2_bit_6  CLNAM2_bit_5  CLNAM2_bit_4  CLNAM2_bit_3  CLNAM2_bit_2  CLNAM2_bit_1  CLNAM2_bit0  CLNAM2_bit1  CLNAM2_bit2  CLNAM2_bit3  CLNAM2_bit4  CLNAM2_bit5  CLNAM2_bit6  CLNAM2_bit7  CLNAM2_bit8  CLNAM2_bit9  CLNAM2_bit10  CLNAM2_bit11  CLNAM2_bit12 -CLNAM3_bit_7 -CLNAM3_bit_6 -CLNAM3_bit_5 -CLNAM3_bit_4 -CLNAM3_bit_3 -CLNAM3_bit_2 -CLNAM3_bit_1 -CLNAM3_bit0 -CLNAM3_bit1 -CLNAM3_bit2 -CLNAM3_bit3 -CLNAM3_bit4 -CLNAM3_bit5 -CLNAM3_bit6 -CLNAM3_bit7 -CLNAM3_bit8 -CLNAM3_bit9 -CLNAM3_bit10 -CLNAM3_bit11 -CLNAM3_bit12 -CLNAM3_bit13 
s OPTIMUM FOUND
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.93 0.97 0.91 2/54 4799
Raw data (stat): 4799 (runsolver) R 4798 32284 32283 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 799630638 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+0.69152 s]
Raw data (loadavg): 0.93 0.97 0.91 1/53 4812
Raw data (stat): 4799 (runsolver) R 4798 32284 32283 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 799630638 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 0.691285
CPU time (s): 0.342946
CPU user time (s): 0.223965
CPU system time (s): 0.118981
CPU usage (%): 49.6099
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	-1048575
#### END VERIFIER DATA ####