/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/forester-heap/sll-token-1.i


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


This is Ultimate 0.2.0-b8ad66e
[2020-10-23 20:39:19,718 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-23 20:39:19,723 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 20:39:19,770 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 20:39:19,770 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 20:39:19,772 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 20:39:19,774 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 20:39:19,777 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 20:39:19,779 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 20:39:19,781 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-23 20:39:19,785 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-10-23 20:39:19,789 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 20:39:19,791 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 20:39:19,792 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 20:39:19,812 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 20:39:19,815 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 20:39:19,817 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 20:39:19,819 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 20:39:19,821 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 20:39:19,822 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-23 20:39:19,825 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-10-23 20:39:19,826 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-10-23 20:39:19,830 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-23 20:39:19,837 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-23 20:39:19,839 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 20:39:19,841 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-23 20:39:19,858 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-23 20:39:19,858 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 20:39:19,861 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 20:39:19,862 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-23 20:39:19,862 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-23 20:39:19,862 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-23 20:39:19,862 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-23 20:39:19,863 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 20:39:19,863 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 20:39:19,863 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 20:39:19,863 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-23 20:39:19,864 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-23 20:39:19,864 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-23 20:39:19,864 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-23 20:39:19,864 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 20:39:19,865 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-10-23 20:39:19,865 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-23 20:39:19,865 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-23 20:39:19,865 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 20:39:19,866 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 20:39:19,866 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-23 20:39:19,866 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 20:39:19,866 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 20:39:20,288 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 20:39:20,325 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 20:39:20,329 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 20:39:20,331 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-23 20:39:20,332 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-23 20:39:20,333 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i
[2020-10-23 20:39:20,427 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770675331/336a31143d23422a990d950fc93c7996/FLAG9fd97f067
[2020-10-23 20:39:21,203 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-23 20:39:21,203 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i
[2020-10-23 20:39:21,228 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770675331/336a31143d23422a990d950fc93c7996/FLAG9fd97f067
[2020-10-23 20:39:21,497 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770675331/336a31143d23422a990d950fc93c7996
[2020-10-23 20:39:21,501 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 20:39:21,509 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 20:39:21,517 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 20:39:21,517 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 20:39:21,524 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 20:39:21,525 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:21" (1/1) ...
[2020-10-23 20:39:21,529 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c37e611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:21, skipping insertion in model container
[2020-10-23 20:39:21,530 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:21" (1/1) ...
[2020-10-23 20:39:21,545 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-23 20:39:21,609 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-23 20:39:21,935 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:39:21,947 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-23 20:39:22,000 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:39:22,065 INFO  L208         MainTranslator]: Completed translation
[2020-10-23 20:39:22,066 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22 WrapperNode
[2020-10-23 20:39:22,066 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 20:39:22,068 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 20:39:22,068 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 20:39:22,068 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 20:39:22,085 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,086 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,104 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,104 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,132 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,155 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,162 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (1/1) ...
[2020-10-23 20:39:22,177 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 20:39:22,178 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 20:39:22,178 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 20:39:22,178 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-23 20:39:22,179 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (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
[2020-10-23 20:39:22,292 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 20:39:22,293 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 20:39:22,293 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 20:39:22,293 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 20:39:22,293 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-10-23 20:39:22,294 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-10-23 20:39:22,295 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-10-23 20:39:22,295 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-10-23 20:39:22,295 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-10-23 20:39:22,295 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-10-23 20:39:22,296 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-10-23 20:39:22,296 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-10-23 20:39:22,298 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-10-23 20:39:22,299 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-10-23 20:39:22,301 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-10-23 20:39:22,301 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-10-23 20:39:22,304 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-10-23 20:39:22,304 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-10-23 20:39:22,304 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-10-23 20:39:22,304 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-10-23 20:39:22,305 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-10-23 20:39:22,305 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-10-23 20:39:22,306 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-10-23 20:39:22,306 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-10-23 20:39:22,306 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-10-23 20:39:22,306 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-10-23 20:39:22,306 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-10-23 20:39:22,311 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-10-23 20:39:22,311 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-10-23 20:39:22,311 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-10-23 20:39:22,312 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-10-23 20:39:22,313 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-10-23 20:39:22,314 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-10-23 20:39:22,315 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-23 20:39:22,315 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-10-23 20:39:22,315 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-10-23 20:39:22,315 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-10-23 20:39:22,315 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-10-23 20:39:22,317 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-23 20:39:22,318 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-10-23 20:39:22,318 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-10-23 20:39:22,318 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-10-23 20:39:22,318 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-10-23 20:39:22,318 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-10-23 20:39:22,319 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-10-23 20:39:22,319 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-10-23 20:39:22,319 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-10-23 20:39:22,319 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-10-23 20:39:22,320 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-10-23 20:39:22,320 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-10-23 20:39:22,320 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-10-23 20:39:22,321 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-10-23 20:39:22,322 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-10-23 20:39:22,323 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-10-23 20:39:22,323 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-10-23 20:39:22,323 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-10-23 20:39:22,324 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-10-23 20:39:22,324 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-10-23 20:39:22,324 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-10-23 20:39:22,324 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-10-23 20:39:22,325 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-10-23 20:39:22,325 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-10-23 20:39:22,325 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-10-23 20:39:22,326 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 20:39:22,327 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 20:39:22,328 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 20:39:22,329 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 20:39:22,329 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 20:39:22,329 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 20:39:23,004 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 20:39:23,006 INFO  L298             CfgBuilder]: Removed 15 assume(true) statements.
[2020-10-23 20:39:23,011 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:23 BoogieIcfgContainer
[2020-10-23 20:39:23,011 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 20:39:23,014 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 20:39:23,014 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 20:39:23,021 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-23 20:39:23,021 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:39:21" (1/3) ...
[2020-10-23 20:39:23,023 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5346a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:23, skipping insertion in model container
[2020-10-23 20:39:23,024 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:22" (2/3) ...
[2020-10-23 20:39:23,025 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e5346a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:23, skipping insertion in model container
[2020-10-23 20:39:23,025 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:23" (3/3) ...
[2020-10-23 20:39:23,027 INFO  L111   eAbstractionObserver]: Analyzing ICFG sll-token-1.i
[2020-10-23 20:39:23,043 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-23 20:39:23,051 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 20:39:23,069 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 20:39:23,105 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-23 20:39:23,105 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-23 20:39:23,106 INFO  L379      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-10-23 20:39:23,106 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 20:39:23,106 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 20:39:23,106 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-23 20:39:23,106 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 20:39:23,106 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 20:39:23,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 104 states.
[2020-10-23 20:39:23,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-23 20:39:23,141 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:39:23,142 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]
[2020-10-23 20:39:23,143 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:39:23,150 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:39:23,151 INFO  L82        PathProgramCache]: Analyzing trace with hash 673351522, now seen corresponding path program 1 times
[2020-10-23 20:39:23,162 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:39:23,163 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265927181]
[2020-10-23 20:39:23,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:39:23,274 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:39:23,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:23,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:39:23,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:23,536 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:39:23,538 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265927181]
[2020-10-23 20:39:23,541 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:39:23,542 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-23 20:39:23,542 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864834329]
[2020-10-23 20:39:23,549 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-10-23 20:39:23,550 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:39:23,568 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-10-23 20:39:23,570 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-23 20:39:23,573 INFO  L87              Difference]: Start difference. First operand 104 states. Second operand 3 states.
[2020-10-23 20:39:23,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:39:23,874 INFO  L93              Difference]: Finished difference Result 183 states and 242 transitions.
[2020-10-23 20:39:23,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-10-23 20:39:23,876 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 28
[2020-10-23 20:39:23,877 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:39:23,889 INFO  L225             Difference]: With dead ends: 183
[2020-10-23 20:39:23,889 INFO  L226             Difference]: Without dead ends: 84
[2020-10-23 20:39:23,895 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
[2020-10-23 20:39:23,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-10-23 20:39:23,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2020-10-23 20:39:23,954 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-10-23 20:39:23,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions.
[2020-10-23 20:39:23,959 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 28
[2020-10-23 20:39:23,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:39:23,960 INFO  L481      AbstractCegarLoop]: Abstraction has 84 states and 91 transitions.
[2020-10-23 20:39:23,960 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-10-23 20:39:23,960 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions.
[2020-10-23 20:39:23,961 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-10-23 20:39:23,961 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:39:23,961 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]
[2020-10-23 20:39:23,962 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 20:39:23,962 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:39:23,963 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:39:23,963 INFO  L82        PathProgramCache]: Analyzing trace with hash -235842492, now seen corresponding path program 1 times
[2020-10-23 20:39:23,964 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:39:23,964 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045827783]
[2020-10-23 20:39:23,964 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:39:23,970 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:39:24,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:24,185 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:39:24,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:24,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:39:24,223 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045827783]
[2020-10-23 20:39:24,223 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:39:24,223 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-23 20:39:24,224 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860352618]
[2020-10-23 20:39:24,225 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-23 20:39:24,225 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:39:24,226 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-23 20:39:24,228 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-10-23 20:39:24,229 INFO  L87              Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 7 states.
[2020-10-23 20:39:24,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:39:24,780 INFO  L93              Difference]: Finished difference Result 147 states and 160 transitions.
[2020-10-23 20:39:24,781 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-23 20:39:24,781 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 29
[2020-10-23 20:39:24,782 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:39:24,785 INFO  L225             Difference]: With dead ends: 147
[2020-10-23 20:39:24,785 INFO  L226             Difference]: Without dead ends: 143
[2020-10-23 20:39:24,787 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2020-10-23 20:39:24,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2020-10-23 20:39:24,802 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 83.
[2020-10-23 20:39:24,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-10-23 20:39:24,804 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions.
[2020-10-23 20:39:24,804 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 29
[2020-10-23 20:39:24,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:39:24,805 INFO  L481      AbstractCegarLoop]: Abstraction has 83 states and 89 transitions.
[2020-10-23 20:39:24,805 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-23 20:39:24,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions.
[2020-10-23 20:39:24,806 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-10-23 20:39:24,806 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:39:24,807 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]
[2020-10-23 20:39:24,807 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 20:39:24,807 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:39:24,808 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:39:24,808 INFO  L82        PathProgramCache]: Analyzing trace with hash 1019399234, now seen corresponding path program 1 times
[2020-10-23 20:39:24,808 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:39:24,809 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353063536]
[2020-10-23 20:39:24,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:39:24,815 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:39:24,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:24,963 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:39:24,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:24,977 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:39:24,978 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353063536]
[2020-10-23 20:39:24,978 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:39:24,978 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-23 20:39:24,979 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196274721]
[2020-10-23 20:39:24,979 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-23 20:39:24,980 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:39:24,980 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-23 20:39:24,981 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-10-23 20:39:24,981 INFO  L87              Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 6 states.
[2020-10-23 20:39:25,249 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:39:25,250 INFO  L93              Difference]: Finished difference Result 143 states and 154 transitions.
[2020-10-23 20:39:25,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-23 20:39:25,251 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 30
[2020-10-23 20:39:25,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:39:25,253 INFO  L225             Difference]: With dead ends: 143
[2020-10-23 20:39:25,253 INFO  L226             Difference]: Without dead ends: 139
[2020-10-23 20:39:25,254 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-10-23 20:39:25,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2020-10-23 20:39:25,269 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 82.
[2020-10-23 20:39:25,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-10-23 20:39:25,270 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions.
[2020-10-23 20:39:25,271 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 30
[2020-10-23 20:39:25,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:39:25,271 INFO  L481      AbstractCegarLoop]: Abstraction has 82 states and 87 transitions.
[2020-10-23 20:39:25,271 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-23 20:39:25,271 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions.
[2020-10-23 20:39:25,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2020-10-23 20:39:25,273 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:39:25,273 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]
[2020-10-23 20:39:25,273 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-23 20:39:25,274 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:39:25,274 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:39:25,274 INFO  L82        PathProgramCache]: Analyzing trace with hash -1509271133, now seen corresponding path program 1 times
[2020-10-23 20:39:25,275 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:39:25,275 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555745924]
[2020-10-23 20:39:25,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:39:25,282 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:39:25,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:25,712 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:39:25,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:39:25,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:39:25,728 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555745924]
[2020-10-23 20:39:25,728 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:39:25,728 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-10-23 20:39:25,728 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320398458]
[2020-10-23 20:39:25,729 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-23 20:39:25,729 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:39:25,730 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-23 20:39:25,730 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2020-10-23 20:39:25,730 INFO  L87              Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 13 states.
[2020-10-23 20:39:26,638 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:39:26,639 INFO  L93              Difference]: Finished difference Result 218 states and 237 transitions.
[2020-10-23 20:39:26,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-10-23 20:39:26,639 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 37
[2020-10-23 20:39:26,640 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:39:26,641 INFO  L225             Difference]: With dead ends: 218
[2020-10-23 20:39:26,642 INFO  L226             Difference]: Without dead ends: 173
[2020-10-23 20:39:26,643 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506
[2020-10-23 20:39:26,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2020-10-23 20:39:26,666 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 96.
[2020-10-23 20:39:26,666 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 96 states.
[2020-10-23 20:39:26,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions.
[2020-10-23 20:39:26,668 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 37
[2020-10-23 20:39:26,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:39:26,668 INFO  L481      AbstractCegarLoop]: Abstraction has 96 states and 102 transitions.
[2020-10-23 20:39:26,668 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-23 20:39:26,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions.
[2020-10-23 20:39:26,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2020-10-23 20:39:26,670 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:39:26,670 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]
[2020-10-23 20:39:26,670 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-23 20:39:26,670 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:39:26,671 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:39:26,671 INFO  L82        PathProgramCache]: Analyzing trace with hash -41132629, now seen corresponding path program 1 times
[2020-10-23 20:39:26,671 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:39:26,672 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937129432]
[2020-10-23 20:39:26,672 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:39:26,677 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:39:26,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 20:39:26,703 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 20:39:26,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 20:39:26,750 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 20:39:26,803 INFO  L173   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-23 20:39:26,803 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 20:39:26,804 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-23 20:39:26,824 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:39:26 BoogieIcfgContainer
[2020-10-23 20:39:26,824 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 20:39:26,827 INFO  L168              Benchmark]: Toolchain (without parser) took 5322.37 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 126.7 MB in the beginning and 138.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,828 INFO  L168              Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.5 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,829 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 549.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,830 INFO  L168              Benchmark]: Boogie Preprocessor took 109.55 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,831 INFO  L168              Benchmark]: RCFGBuilder took 833.25 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 86.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,832 INFO  L168              Benchmark]: TraceAbstraction took 3810.18 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 86.9 MB in the beginning and 138.1 MB in the end (delta: -51.2 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 20:39:26,836 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.5 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 549.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 109.55 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 833.25 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 86.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 3810.18 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 86.9 MB in the beginning and 138.1 MB in the end (delta: -51.2 MB). There was no memory consumed. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L1003]              SLL* head = malloc(sizeof(SLL));
[L1004]              head->next = ((void*)0)
[L1005]              head->data = 0
[L1007]              SLL* x = head;
[L1010]  COND FALSE  !(__VERIFIER_nondet_int())
[L1018]              x->data = 1
[L1019]              x->next = malloc(sizeof(SLL))
[L1020]  EXPR        x->next
[L1020]              x->next->data = 2
[L1022]              x = head
[L1024]  COND FALSE  !(!(((void*)0) != x))
[L1026]  EXPR        x->data
[L1026]  COND FALSE  !(1 != x->data)
[L1031]  EXPR        x->data
[L1031]  COND TRUE   !(2 == x->data)
[L1031]  CALL        reach_error()
[L992]   COND FALSE  !(0)
[L992]               __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__)

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 368 SDtfs, 732 SDslu, 925 SDs, 0 SdLazy, 879 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 194 StatesRemovedByMinimization, 3 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...