/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.0-7d8eed3
[2020-11-07 00:50:21,429 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-11-07 00:50:21,432 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-07 00:50:21,484 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-07 00:50:21,485 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-07 00:50:21,489 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-07 00:50:21,493 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-07 00:50:21,501 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-07 00:50:21,504 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-07 00:50:21,512 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-07 00:50:21,514 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-11-07 00:50:21,515 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-07 00:50:21,516 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-07 00:50:21,520 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-07 00:50:21,522 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-07 00:50:21,524 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-07 00:50:21,525 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-07 00:50:21,529 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-07 00:50:21,537 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-07 00:50:21,542 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-07 00:50:21,547 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-07 00:50:21,548 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-07 00:50:21,550 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-11-07 00:50:21,552 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-07 00:50:21,573 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-07 00:50:21,573 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-07 00:50:21,573 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-07 00:50:21,574 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-11-07 00:50:21,575 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-11-07 00:50:21,576 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-11-07 00:50:21,576 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-07 00:50:21,577 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-07 00:50:21,578 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-11-07 00:50:21,579 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-11-07 00:50:21,580 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-11-07 00:50:21,580 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-11-07 00:50:21,581 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-07 00:50:21,583 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-11-07 00:50:21,584 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-11-07 00:50:21,597 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-11-07 00:50:21,597 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-07 00:50:21,599 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-07 00:50:21,599 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-11-07 00:50:21,599 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-11-07 00:50:21,599 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-11-07 00:50:21,600 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-11-07 00:50:21,600 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-11-07 00:50:21,600 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-07 00:50:21,600 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-11-07 00:50:21,600 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-11-07 00:50:21,601 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-11-07 00:50:21,601 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-11-07 00:50:21,601 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-11-07 00:50:21,601 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-07 00:50:21,601 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-11-07 00:50:21,602 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-11-07 00:50:21,602 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-11-07 00:50:21,602 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 00:50:21,602 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-07 00:50:21,602 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-11-07 00:50:21,603 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-07 00:50:21,603 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-07 00:50:22,013 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-07 00:50:22,057 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-07 00:50:22,061 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-07 00:50:22,063 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-11-07 00:50:22,064 INFO  L275        PluginConnector]: CDTParser initialized
[2020-11-07 00:50:22,065 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i
[2020-11-07 00:50:22,144 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1/FLAGffb9f5a2b
[2020-11-07 00:50:22,867 INFO  L306              CDTParser]: Found 1 translation units.
[2020-11-07 00:50:22,868 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i
[2020-11-07 00:50:22,901 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1/FLAGffb9f5a2b
[2020-11-07 00:50:23,160 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1
[2020-11-07 00:50:23,163 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-07 00:50:23,172 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-07 00:50:23,174 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-07 00:50:23,175 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-07 00:50:23,179 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-07 00:50:23,180 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,188 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f45a0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23, skipping insertion in model container
[2020-11-07 00:50:23,190 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,200 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-11-07 00:50:23,257 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-11-07 00:50:23,556 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-07 00:50:23,567 INFO  L203         MainTranslator]: Completed pre-run
[2020-11-07 00:50:23,618 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-07 00:50:23,699 INFO  L208         MainTranslator]: Completed translation
[2020-11-07 00:50:23,699 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23 WrapperNode
[2020-11-07 00:50:23,699 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-07 00:50:23,701 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-07 00:50:23,701 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-07 00:50:23,701 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-11-07 00:50:23,714 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,715 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,759 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,759 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,799 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,807 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,811 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
[2020-11-07 00:50:23,818 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-07 00:50:23,819 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-07 00:50:23,819 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-11-07 00:50:23,820 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-11-07 00:50:23,820 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 00:50:23,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-07 00:50:23,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-07 00:50:23,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-07 00:50:23,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2020-11-07 00:50:23,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2020-11-07 00:50:23,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2020-11-07 00:50:23,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2020-11-07 00:50:23,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2020-11-07 00:50:23,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2020-11-07 00:50:23,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-07 00:50:23,896 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-11-07 00:50:23,897 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-11-07 00:50:23,898 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-11-07 00:50:23,899 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint16_identity
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint32_identity
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint64_identity
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-11-07 00:50:23,900 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-11-07 00:50:23,901 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-11-07 00:50:23,902 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-11-07 00:50:23,903 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-11-07 00:50:23,904 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-11-07 00:50:23,905 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-11-07 00:50:23,906 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-11-07 00:50:23,907 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-11-07 00:50:23,908 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-11-07 00:50:23,909 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-11-07 00:50:23,910 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-11-07 00:50:23,911 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-11-07 00:50:23,912 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-11-07 00:50:23,913 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-11-07 00:50:23,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-07 00:50:23,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-07 00:50:23,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-07 00:50:23,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-07 00:50:24,283 INFO  L751   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2020-11-07 00:50:24,514 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-07 00:50:24,514 INFO  L298             CfgBuilder]: Removed 4 assume(true) statements.
[2020-11-07 00:50:24,516 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:24 BoogieIcfgContainer
[2020-11-07 00:50:24,516 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-07 00:50:24,518 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-07 00:50:24,518 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-11-07 00:50:24,521 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-11-07 00:50:24,522 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:23" (1/3) ...
[2020-11-07 00:50:24,522 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:24, skipping insertion in model container
[2020-11-07 00:50:24,523 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (2/3) ...
[2020-11-07 00:50:24,523 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:24, skipping insertion in model container
[2020-11-07 00:50:24,523 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:24" (3/3) ...
[2020-11-07 00:50:24,525 INFO  L111   eAbstractionObserver]: Analyzing ICFG splice-1.i
[2020-11-07 00:50:24,540 INFO  L179   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-07 00:50:24,544 INFO  L191   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-07 00:50:24,556 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-07 00:50:24,579 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-11-07 00:50:24,579 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-11-07 00:50:24,579 INFO  L379      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-11-07 00:50:24,579 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-07 00:50:24,579 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-07 00:50:24,579 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-11-07 00:50:24,580 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-07 00:50:24,580 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-07 00:50:24,597 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states.
[2020-11-07 00:50:24,608 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-11-07 00:50:24,608 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:24,609 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:24,610 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:24,616 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:24,616 INFO  L82        PathProgramCache]: Analyzing trace with hash 325205440, now seen corresponding path program 1 times
[2020-11-07 00:50:24,626 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:24,627 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670371745]
[2020-11-07 00:50:24,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:24,733 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:24,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:24,995 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 00:50:25,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:25,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 00:50:25,049 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670371745]
[2020-11-07 00:50:25,052 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 00:50:25,053 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-11-07 00:50:25,054 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940442735]
[2020-11-07 00:50:25,062 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-11-07 00:50:25,062 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 00:50:25,079 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-11-07 00:50:25,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-07 00:50:25,084 INFO  L87              Difference]: Start difference. First operand 98 states. Second operand 3 states.
[2020-11-07 00:50:25,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 00:50:25,372 INFO  L93              Difference]: Finished difference Result 150 states and 176 transitions.
[2020-11-07 00:50:25,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-11-07 00:50:25,374 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 39
[2020-11-07 00:50:25,375 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 00:50:25,384 INFO  L225             Difference]: With dead ends: 150
[2020-11-07 00:50:25,384 INFO  L226             Difference]: Without dead ends: 82
[2020-11-07 00:50:25,388 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-07 00:50:25,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-11-07 00:50:25,433 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2020-11-07 00:50:25,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-11-07 00:50:25,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions.
[2020-11-07 00:50:25,438 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 39
[2020-11-07 00:50:25,439 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-07 00:50:25,439 INFO  L481      AbstractCegarLoop]: Abstraction has 82 states and 88 transitions.
[2020-11-07 00:50:25,439 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-11-07 00:50:25,439 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions.
[2020-11-07 00:50:25,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-11-07 00:50:25,442 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:25,442 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:25,442 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-07 00:50:25,442 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:25,443 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:25,443 INFO  L82        PathProgramCache]: Analyzing trace with hash -322632441, now seen corresponding path program 1 times
[2020-11-07 00:50:25,443 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:25,444 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600621990]
[2020-11-07 00:50:25,444 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:25,450 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:25,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:25,614 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 00:50:25,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:25,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 00:50:25,648 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600621990]
[2020-11-07 00:50:25,648 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 00:50:25,648 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-11-07 00:50:25,648 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903800681]
[2020-11-07 00:50:25,649 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-11-07 00:50:25,650 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 00:50:25,653 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-11-07 00:50:25,654 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-11-07 00:50:25,654 INFO  L87              Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 6 states.
[2020-11-07 00:50:25,948 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 00:50:25,948 INFO  L93              Difference]: Finished difference Result 150 states and 163 transitions.
[2020-11-07 00:50:25,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-11-07 00:50:25,948 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 43
[2020-11-07 00:50:25,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 00:50:25,951 INFO  L225             Difference]: With dead ends: 150
[2020-11-07 00:50:25,951 INFO  L226             Difference]: Without dead ends: 104
[2020-11-07 00:50:25,953 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-11-07 00:50:25,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2020-11-07 00:50:25,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84.
[2020-11-07 00:50:25,966 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-11-07 00:50:25,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions.
[2020-11-07 00:50:25,968 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 43
[2020-11-07 00:50:25,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-07 00:50:25,968 INFO  L481      AbstractCegarLoop]: Abstraction has 84 states and 90 transitions.
[2020-11-07 00:50:25,968 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-11-07 00:50:25,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions.
[2020-11-07 00:50:25,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-11-07 00:50:25,970 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:25,971 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:25,971 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-07 00:50:25,971 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:25,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:25,972 INFO  L82        PathProgramCache]: Analyzing trace with hash 1699669116, now seen corresponding path program 1 times
[2020-11-07 00:50:25,972 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:25,972 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401525252]
[2020-11-07 00:50:25,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:26,252 WARN  L194               SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91
[2020-11-07 00:50:26,324 INFO  L547         ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:26,402 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:26,409 INFO  L547         ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:26,474 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:26,476 INFO  L547         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call: 2 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:26,476 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:148, output treesize:124
[2020-11-07 00:50:26,560 INFO  L120            Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-11-07 00:50:26,565 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:26,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:26,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 00:50:26,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:26,648 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 00:50:26,649 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401525252]
[2020-11-07 00:50:26,649 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 00:50:26,650 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-07 00:50:26,650 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834577866]
[2020-11-07 00:50:26,650 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-07 00:50:26,651 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 00:50:26,651 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-07 00:50:26,651 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-07 00:50:26,652 INFO  L87              Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 4 states.
[2020-11-07 00:50:26,897 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 00:50:26,897 INFO  L93              Difference]: Finished difference Result 195 states and 214 transitions.
[2020-11-07 00:50:26,898 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-11-07 00:50:26,898 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 56
[2020-11-07 00:50:26,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 00:50:26,902 INFO  L225             Difference]: With dead ends: 195
[2020-11-07 00:50:26,902 INFO  L226             Difference]: Without dead ends: 134
[2020-11-07 00:50:26,903 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-07 00:50:26,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2020-11-07 00:50:26,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103.
[2020-11-07 00:50:26,918 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 103 states.
[2020-11-07 00:50:26,920 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions.
[2020-11-07 00:50:26,920 INFO  L78                 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 56
[2020-11-07 00:50:26,920 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-07 00:50:26,920 INFO  L481      AbstractCegarLoop]: Abstraction has 103 states and 111 transitions.
[2020-11-07 00:50:26,921 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-07 00:50:26,921 INFO  L276                IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions.
[2020-11-07 00:50:26,922 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-11-07 00:50:26,922 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:26,922 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:26,923 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-11-07 00:50:26,923 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:26,923 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:26,924 INFO  L82        PathProgramCache]: Analyzing trace with hash -298314368, now seen corresponding path program 1 times
[2020-11-07 00:50:26,924 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:26,924 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422858309]
[2020-11-07 00:50:26,924 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:27,188 WARN  L194               SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91
[2020-11-07 00:50:27,204 INFO  L547         ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:27,278 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:27,296 INFO  L547         ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:27,376 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:27,378 INFO  L547         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call: 2 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:27,378 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125
[2020-11-07 00:50:27,452 INFO  L120            Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-11-07 00:50:27,456 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:27,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:27,549 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 00:50:27,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:27,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 00:50:27,562 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422858309]
[2020-11-07 00:50:27,562 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 00:50:27,562 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-11-07 00:50:27,563 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931979584]
[2020-11-07 00:50:27,563 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-11-07 00:50:27,563 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 00:50:27,564 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-11-07 00:50:27,564 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-11-07 00:50:27,564 INFO  L87              Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 5 states.
[2020-11-07 00:50:27,784 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 00:50:27,784 INFO  L93              Difference]: Finished difference Result 147 states and 160 transitions.
[2020-11-07 00:50:27,785 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-11-07 00:50:27,785 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 56
[2020-11-07 00:50:27,785 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 00:50:27,787 INFO  L225             Difference]: With dead ends: 147
[2020-11-07 00:50:27,787 INFO  L226             Difference]: Without dead ends: 126
[2020-11-07 00:50:27,787 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-11-07 00:50:27,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2020-11-07 00:50:27,798 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108.
[2020-11-07 00:50:27,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 108 states.
[2020-11-07 00:50:27,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions.
[2020-11-07 00:50:27,800 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 56
[2020-11-07 00:50:27,801 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-07 00:50:27,801 INFO  L481      AbstractCegarLoop]: Abstraction has 108 states and 117 transitions.
[2020-11-07 00:50:27,801 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-11-07 00:50:27,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions.
[2020-11-07 00:50:27,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-11-07 00:50:27,802 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:27,803 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:27,803 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-11-07 00:50:27,803 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:27,804 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:27,804 INFO  L82        PathProgramCache]: Analyzing trace with hash 152366671, now seen corresponding path program 1 times
[2020-11-07 00:50:27,804 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:27,804 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933864312]
[2020-11-07 00:50:27,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:28,107 WARN  L194               SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91
[2020-11-07 00:50:28,132 INFO  L547         ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:28,234 WARN  L194               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2020-11-07 00:50:28,235 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:28,242 INFO  L547         ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:28,310 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:28,312 INFO  L547         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call: 2 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:28,312 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125
[2020-11-07 00:50:28,396 INFO  L120            Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-11-07 00:50:28,401 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:28,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:28,481 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 00:50:28,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 00:50:28,493 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 00:50:28,494 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933864312]
[2020-11-07 00:50:28,494 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 00:50:28,494 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-11-07 00:50:28,495 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294655533]
[2020-11-07 00:50:28,495 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-11-07 00:50:28,495 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 00:50:28,496 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-11-07 00:50:28,496 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-11-07 00:50:28,496 INFO  L87              Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 5 states.
[2020-11-07 00:50:28,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 00:50:28,712 INFO  L93              Difference]: Finished difference Result 152 states and 165 transitions.
[2020-11-07 00:50:28,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-11-07 00:50:28,713 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 58
[2020-11-07 00:50:28,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 00:50:28,715 INFO  L225             Difference]: With dead ends: 152
[2020-11-07 00:50:28,715 INFO  L226             Difference]: Without dead ends: 135
[2020-11-07 00:50:28,716 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-11-07 00:50:28,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2020-11-07 00:50:28,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131.
[2020-11-07 00:50:28,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 131 states.
[2020-11-07 00:50:28,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions.
[2020-11-07 00:50:28,756 INFO  L78                 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 58
[2020-11-07 00:50:28,757 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-07 00:50:28,760 INFO  L481      AbstractCegarLoop]: Abstraction has 131 states and 142 transitions.
[2020-11-07 00:50:28,760 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-11-07 00:50:28,760 INFO  L276                IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions.
[2020-11-07 00:50:28,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-11-07 00:50:28,765 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-07 00:50:28,765 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 00:50:28,765 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-11-07 00:50:28,765 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 00:50:28,766 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 00:50:28,766 INFO  L82        PathProgramCache]: Analyzing trace with hash 1310006761, now seen corresponding path program 1 times
[2020-11-07 00:50:28,766 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 00:50:28,766 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099618656]
[2020-11-07 00:50:28,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 00:50:29,025 WARN  L194               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91
[2020-11-07 00:50:29,048 INFO  L547         ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:29,142 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:29,156 INFO  L547         ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:29,231 INFO  L625         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-11-07 00:50:29,233 INFO  L547         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call: 2 dim-0 vars,  and 1 xjuncts.
[2020-11-07 00:50:29,233 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125
[2020-11-07 00:50:29,326 INFO  L120            Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-11-07 00:50:29,330 INFO  L328   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 00:50:29,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-07 00:50:29,394 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-07 00:50:29,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-07 00:50:29,452 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-07 00:50:29,513 INFO  L173   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-11-07 00:50:29,513 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-11-07 00:50:29,516 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-11-07 00:50:29,548 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:50:29 BoogieIcfgContainer
[2020-11-07 00:50:29,548 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-07 00:50:29,552 INFO  L168              Benchmark]: Toolchain (without parser) took 6384.01 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.8 MB in the beginning and 104.1 MB in the end (delta: 27.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,555 INFO  L168              Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,563 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 525.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 109.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,564 INFO  L168              Benchmark]: Boogie Preprocessor took 117.82 ms. Allocated memory is still 156.2 MB. Free memory was 109.0 MB in the beginning and 138.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,565 INFO  L168              Benchmark]: RCFGBuilder took 696.96 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 134.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,566 INFO  L168              Benchmark]: TraceAbstraction took 5030.35 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 104.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB.
[2020-11-07 00:50:29,577 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 525.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 109.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 117.82 ms. Allocated memory is still 156.2 MB. Free memory was 109.0 MB in the beginning and 138.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 696.96 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 134.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 5030.35 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 104.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L532]              int flag = 1;
[L533]              List a = (List) malloc(sizeof(struct node));
[L534]  COND FALSE  !(a == 0)
[L535]              List t;
[L536]              List l1;
[L537]              List l2;
[L538]              List b;
[L539]              List u;
[L540]              List p = a;
[L541]  COND TRUE   __VERIFIER_nondet_int()
[L542]  COND TRUE   \read(flag)
[L543]              p->h = 1
[L544]              flag = 0
[L549]              t = (List) malloc(sizeof(struct node))
[L550]  COND FALSE  !(t == 0)
[L551]              p->n = t
[L552]  EXPR        p->n
[L552]              p = p->n
[L541]  COND FALSE  !(__VERIFIER_nondet_int())
[L554]              p->h = 3
[L555]  EXPR        a->h
[L555]  COND FALSE  !(a->h == 3)
[L556]              flag = 1
[L557]              l1 = 0
[L558]              l2 = 0
[L559]              p = a
[L560]  EXPR        p->h
[L560]  COND TRUE   p->h != 3
[L561]              t = p
[L562]  EXPR        p->n
[L562]              p = p->n
[L563]  COND TRUE   \read(flag)
[L564]              t->n = l1
[L565]              l1 = t
[L566]              flag = 0
[L560]  EXPR        p->h
[L560]  COND FALSE  !(p->h != 3)
[L573]              p = l1
[L574]  COND TRUE   p != 0
[L575]  EXPR        p->h
[L575]  COND TRUE   p->h != 2
[L584]  CALL        reach_error()
[L12]   COND FALSE  !(0)
[L12]               __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__)

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 133 SDslu, 552 SDs, 0 SdLazy, 582 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...