java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i


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


This is Ultimate 0.1.24-112bae1
[2019-09-08 02:15:57,104 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-09-08 02:15:57,106 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-09-08 02:15:57,118 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-09-08 02:15:57,118 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-09-08 02:15:57,119 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-09-08 02:15:57,120 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-09-08 02:15:57,122 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-09-08 02:15:57,124 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-09-08 02:15:57,125 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-09-08 02:15:57,126 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-09-08 02:15:57,127 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-09-08 02:15:57,127 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-09-08 02:15:57,128 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-09-08 02:15:57,129 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-09-08 02:15:57,130 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-09-08 02:15:57,131 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-09-08 02:15:57,131 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-09-08 02:15:57,133 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-09-08 02:15:57,135 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-09-08 02:15:57,136 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-09-08 02:15:57,137 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-09-08 02:15:57,139 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-09-08 02:15:57,139 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-09-08 02:15:57,142 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-09-08 02:15:57,142 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-09-08 02:15:57,142 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-09-08 02:15:57,143 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-09-08 02:15:57,143 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-09-08 02:15:57,144 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-09-08 02:15:57,144 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-09-08 02:15:57,145 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-09-08 02:15:57,146 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-09-08 02:15:57,147 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-09-08 02:15:57,148 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-09-08 02:15:57,148 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-09-08 02:15:57,149 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-09-08 02:15:57,149 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-09-08 02:15:57,149 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-09-08 02:15:57,150 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-09-08 02:15:57,151 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-09-08 02:15:57,152 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-09-08 02:15:57,177 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-09-08 02:15:57,178 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-09-08 02:15:57,180 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-09-08 02:15:57,181 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-09-08 02:15:57,181 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-09-08 02:15:57,182 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-09-08 02:15:57,182 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-09-08 02:15:57,182 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-09-08 02:15:57,182 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-09-08 02:15:57,182 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-09-08 02:15:57,183 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-09-08 02:15:57,184 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-09-08 02:15:57,184 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-09-08 02:15:57,184 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-09-08 02:15:57,184 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-09-08 02:15:57,185 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-09-08 02:15:57,185 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-09-08 02:15:57,185 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-09-08 02:15:57,185 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-09-08 02:15:57,185 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-09-08 02:15:57,186 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-09-08 02:15:57,186 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-08 02:15:57,186 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-09-08 02:15:57,186 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-09-08 02:15:57,187 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-09-08 02:15:57,187 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-09-08 02:15:57,187 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-09-08 02:15:57,187 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-09-08 02:15:57,188 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-09-08 02:15:57,240 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-09-08 02:15:57,257 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-09-08 02:15:57,262 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-09-08 02:15:57,264 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-09-08 02:15:57,264 INFO  L275        PluginConnector]: CDTParser initialized
[2019-09-08 02:15:57,265 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i
[2019-09-08 02:15:57,333 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94859b14/03379f1924e54d98acb324042b572292/FLAGb425c3837
[2019-09-08 02:15:57,860 INFO  L306              CDTParser]: Found 1 translation units.
[2019-09-08 02:15:57,861 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i
[2019-09-08 02:15:57,880 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94859b14/03379f1924e54d98acb324042b572292/FLAGb425c3837
[2019-09-08 02:15:58,177 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94859b14/03379f1924e54d98acb324042b572292
[2019-09-08 02:15:58,189 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-09-08 02:15:58,190 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-09-08 02:15:58,191 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-09-08 02:15:58,192 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-09-08 02:15:58,196 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-09-08 02:15:58,197 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,200 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a98270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58, skipping insertion in model container
[2019-09-08 02:15:58,200 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,209 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-09-08 02:15:58,269 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-09-08 02:15:58,688 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-08 02:15:58,707 INFO  L188         MainTranslator]: Completed pre-run
[2019-09-08 02:15:58,750 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-08 02:15:58,825 INFO  L192         MainTranslator]: Completed translation
[2019-09-08 02:15:58,826 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58 WrapperNode
[2019-09-08 02:15:58,826 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-09-08 02:15:58,827 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-09-08 02:15:58,827 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-09-08 02:15:58,828 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-09-08 02:15:58,840 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,841 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,859 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,859 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,873 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,879 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,883 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (1/1) ...
[2019-09-08 02:15:58,889 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-09-08 02:15:58,890 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-09-08 02:15:58,890 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-09-08 02:15:58,890 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-09-08 02:15:58,892 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (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
[2019-09-08 02:15:58,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-09-08 02:15:58,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-09-08 02:15:58,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure sll_create
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure sll_length
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure sll_destroy
[2019-09-08 02:15:58,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-09-08 02:15:58,950 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2019-09-08 02:15:58,951 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2019-09-08 02:15:58,952 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2019-09-08 02:15:58,953 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2019-09-08 02:15:58,954 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2019-09-08 02:15:58,955 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2019-09-08 02:15:58,956 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2019-09-08 02:15:58,957 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2019-09-08 02:15:58,958 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2019-09-08 02:15:58,959 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2019-09-08 02:15:58,960 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2019-09-08 02:15:58,961 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2019-09-08 02:15:58,962 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2019-09-08 02:15:58,963 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2019-09-08 02:15:58,964 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2019-09-08 02:15:58,965 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2019-09-08 02:15:58,966 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure sll_create
[2019-09-08 02:15:58,967 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure sll_length
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure sll_destroy
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-09-08 02:15:58,968 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-09-08 02:15:58,969 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-09-08 02:15:58,969 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-09-08 02:15:59,292 INFO  L684   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2019-09-08 02:15:59,453 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-09-08 02:15:59,453 INFO  L283             CfgBuilder]: Removed 4 assume(true) statements.
[2019-09-08 02:15:59,455 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:15:59 BoogieIcfgContainer
[2019-09-08 02:15:59,455 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-09-08 02:15:59,456 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-09-08 02:15:59,456 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-09-08 02:15:59,459 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-09-08 02:15:59,459 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:15:58" (1/3) ...
[2019-09-08 02:15:59,460 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efb3881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:15:59, skipping insertion in model container
[2019-09-08 02:15:59,460 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:15:58" (2/3) ...
[2019-09-08 02:15:59,461 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efb3881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:15:59, skipping insertion in model container
[2019-09-08 02:15:59,461 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:15:59" (3/3) ...
[2019-09-08 02:15:59,463 INFO  L109   eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i
[2019-09-08 02:15:59,471 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-09-08 02:15:59,479 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-09-08 02:15:59,494 INFO  L252      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-09-08 02:15:59,519 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2019-09-08 02:15:59,520 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2019-09-08 02:15:59,520 INFO  L378      AbstractCegarLoop]: Hoare is true
[2019-09-08 02:15:59,520 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-09-08 02:15:59,520 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-09-08 02:15:59,521 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-09-08 02:15:59,521 INFO  L382      AbstractCegarLoop]: Difference is false
[2019-09-08 02:15:59,521 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-09-08 02:15:59,521 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-09-08 02:15:59,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states.
[2019-09-08 02:15:59,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2019-09-08 02:15:59,549 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:15:59,550 INFO  L399         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]
[2019-09-08 02:15:59,552 INFO  L418      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:15:59,558 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:15:59,558 INFO  L82        PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times
[2019-09-08 02:15:59,560 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:15:59,561 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:15:59,617 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:15:59,618 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:15:59,618 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:15:59,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:15:59,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-08 02:15:59,694 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-08 02:15:59,695 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-09-08 02:15:59,700 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-09-08 02:15:59,714 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-09-08 02:15:59,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-09-08 02:15:59,718 INFO  L87              Difference]: Start difference. First operand 41 states. Second operand 2 states.
[2019-09-08 02:15:59,746 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:15:59,747 INFO  L93              Difference]: Finished difference Result 73 states and 93 transitions.
[2019-09-08 02:15:59,747 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-09-08 02:15:59,748 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 23
[2019-09-08 02:15:59,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:15:59,759 INFO  L225             Difference]: With dead ends: 73
[2019-09-08 02:15:59,759 INFO  L226             Difference]: Without dead ends: 28
[2019-09-08 02:15:59,764 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-09-08 02:15:59,786 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2019-09-08 02:15:59,808 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2019-09-08 02:15:59,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-09-08 02:15:59,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2019-09-08 02:15:59,812 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23
[2019-09-08 02:15:59,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:15:59,813 INFO  L475      AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2019-09-08 02:15:59,813 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-09-08 02:15:59,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2019-09-08 02:15:59,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2019-09-08 02:15:59,815 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:15:59,815 INFO  L399         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]
[2019-09-08 02:15:59,815 INFO  L418      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:15:59,816 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:15:59,816 INFO  L82        PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times
[2019-09-08 02:15:59,816 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:15:59,816 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:15:59,818 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:15:59,819 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:15:59,819 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:15:59,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:15:59,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-08 02:15:59,973 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-08 02:15:59,973 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-09-08 02:15:59,975 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-09-08 02:15:59,975 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-09-08 02:15:59,976 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-09-08 02:15:59,977 INFO  L87              Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states.
[2019-09-08 02:16:00,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:16:00,060 INFO  L93              Difference]: Finished difference Result 45 states and 49 transitions.
[2019-09-08 02:16:00,061 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-09-08 02:16:00,062 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 25
[2019-09-08 02:16:00,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:16:00,063 INFO  L225             Difference]: With dead ends: 45
[2019-09-08 02:16:00,063 INFO  L226             Difference]: Without dead ends: 31
[2019-09-08 02:16:00,065 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-09-08 02:16:00,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2019-09-08 02:16:00,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2019-09-08 02:16:00,079 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2019-09-08 02:16:00,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2019-09-08 02:16:00,082 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25
[2019-09-08 02:16:00,082 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:16:00,083 INFO  L475      AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2019-09-08 02:16:00,083 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-09-08 02:16:00,083 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2019-09-08 02:16:00,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2019-09-08 02:16:00,085 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:16:00,085 INFO  L399         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]
[2019-09-08 02:16:00,086 INFO  L418      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:16:00,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:16:00,086 INFO  L82        PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times
[2019-09-08 02:16:00,086 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:16:00,087 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:16:00,094 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,095 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:16:00,095 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:16:00,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-08 02:16:00,296 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-08 02:16:00,296 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-09-08 02:16:00,297 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-09-08 02:16:00,297 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-09-08 02:16:00,297 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-09-08 02:16:00,298 INFO  L87              Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states.
[2019-09-08 02:16:00,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:16:00,412 INFO  L93              Difference]: Finished difference Result 39 states and 42 transitions.
[2019-09-08 02:16:00,413 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-09-08 02:16:00,413 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 28
[2019-09-08 02:16:00,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:16:00,414 INFO  L225             Difference]: With dead ends: 39
[2019-09-08 02:16:00,415 INFO  L226             Difference]: Without dead ends: 32
[2019-09-08 02:16:00,415 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2019-09-08 02:16:00,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2019-09-08 02:16:00,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2019-09-08 02:16:00,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2019-09-08 02:16:00,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2019-09-08 02:16:00,427 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 28
[2019-09-08 02:16:00,428 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:16:00,428 INFO  L475      AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2019-09-08 02:16:00,428 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-09-08 02:16:00,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2019-09-08 02:16:00,430 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2019-09-08 02:16:00,431 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:16:00,431 INFO  L399         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]
[2019-09-08 02:16:00,431 INFO  L418      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:16:00,431 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:16:00,432 INFO  L82        PathProgramCache]: Analyzing trace with hash 1808388506, now seen corresponding path program 1 times
[2019-09-08 02:16:00,434 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:16:00,434 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:16:00,439 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,440 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:16:00,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:16:00,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-09-08 02:16:00,528 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-08 02:16:00,528 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-08 02:16:00,544 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:16:00,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:16:00,579 INFO  L256         TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core
[2019-09-08 02:16:00,586 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-08 02:16:00,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-09-08 02:16:00,636 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-08 02:16:00,636 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2019-09-08 02:16:00,637 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-09-08 02:16:00,637 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-09-08 02:16:00,637 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-09-08 02:16:00,638 INFO  L87              Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states.
[2019-09-08 02:16:00,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:16:00,733 INFO  L93              Difference]: Finished difference Result 50 states and 54 transitions.
[2019-09-08 02:16:00,734 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-09-08 02:16:00,735 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 29
[2019-09-08 02:16:00,735 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:16:00,736 INFO  L225             Difference]: With dead ends: 50
[2019-09-08 02:16:00,736 INFO  L226             Difference]: Without dead ends: 35
[2019-09-08 02:16:00,738 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-09-08 02:16:00,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2019-09-08 02:16:00,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33.
[2019-09-08 02:16:00,745 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2019-09-08 02:16:00,749 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions.
[2019-09-08 02:16:00,750 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29
[2019-09-08 02:16:00,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:16:00,750 INFO  L475      AbstractCegarLoop]: Abstraction has 33 states and 36 transitions.
[2019-09-08 02:16:00,750 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-09-08 02:16:00,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions.
[2019-09-08 02:16:00,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2019-09-08 02:16:00,753 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:16:00,753 INFO  L399         BasicCegarLoop]: trace histogram [2, 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]
[2019-09-08 02:16:00,753 INFO  L418      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:16:00,753 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:16:00,754 INFO  L82        PathProgramCache]: Analyzing trace with hash 560900285, now seen corresponding path program 2 times
[2019-09-08 02:16:00,754 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:16:00,754 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:16:00,756 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,756 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-08 02:16:00,757 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:00,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:16:00,938 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-08 02:16:00,938 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-08 02:16:00,938 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
[2019-09-08 02:16:00,955 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-08 02:16:00,987 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-09-08 02:16:00,988 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-09-08 02:16:00,989 INFO  L256         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-09-08 02:16:00,991 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-08 02:16:01,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-09-08 02:16:01,092 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-08 02:16:01,092 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16
[2019-09-08 02:16:01,092 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-09-08 02:16:01,093 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-09-08 02:16:01,093 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240
[2019-09-08 02:16:01,093 INFO  L87              Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 16 states.
[2019-09-08 02:16:01,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:16:01,559 INFO  L93              Difference]: Finished difference Result 57 states and 62 transitions.
[2019-09-08 02:16:01,561 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2019-09-08 02:16:01,562 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 32
[2019-09-08 02:16:01,562 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:16:01,564 INFO  L225             Difference]: With dead ends: 57
[2019-09-08 02:16:01,564 INFO  L226             Difference]: Without dead ends: 39
[2019-09-08 02:16:01,565 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650
[2019-09-08 02:16:01,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2019-09-08 02:16:01,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37.
[2019-09-08 02:16:01,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2019-09-08 02:16:01,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions.
[2019-09-08 02:16:01,579 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 32
[2019-09-08 02:16:01,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:16:01,580 INFO  L475      AbstractCegarLoop]: Abstraction has 37 states and 40 transitions.
[2019-09-08 02:16:01,580 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-09-08 02:16:01,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions.
[2019-09-08 02:16:01,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2019-09-08 02:16:01,584 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:16:01,584 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 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]
[2019-09-08 02:16:01,584 INFO  L418      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:16:01,585 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:16:01,585 INFO  L82        PathProgramCache]: Analyzing trace with hash -1265881822, now seen corresponding path program 3 times
[2019-09-08 02:16:01,587 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:16:01,587 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:16:01,588 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:01,588 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2019-09-08 02:16:01,589 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:01,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-08 02:16:01,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-08 02:16:01,907 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-08 02:16:01,907 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-08 02:16:01,927 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2019-09-08 02:16:01,958 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2019-09-08 02:16:01,958 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-09-08 02:16:01,960 INFO  L256         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core
[2019-09-08 02:16:01,963 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-08 02:16:02,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-09-08 02:16:02,104 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-08 02:16:02,104 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21
[2019-09-08 02:16:02,104 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 21 states
[2019-09-08 02:16:02,105 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2019-09-08 02:16:02,105 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420
[2019-09-08 02:16:02,106 INFO  L87              Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 21 states.
[2019-09-08 02:16:02,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-08 02:16:02,799 INFO  L93              Difference]: Finished difference Result 57 states and 64 transitions.
[2019-09-08 02:16:02,799 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2019-09-08 02:16:02,799 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 36
[2019-09-08 02:16:02,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-08 02:16:02,802 INFO  L225             Difference]: With dead ends: 57
[2019-09-08 02:16:02,803 INFO  L226             Difference]: Without dead ends: 50
[2019-09-08 02:16:02,804 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056
[2019-09-08 02:16:02,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2019-09-08 02:16:02,814 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38.
[2019-09-08 02:16:02,814 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2019-09-08 02:16:02,815 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions.
[2019-09-08 02:16:02,815 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 36
[2019-09-08 02:16:02,815 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-08 02:16:02,816 INFO  L475      AbstractCegarLoop]: Abstraction has 38 states and 41 transitions.
[2019-09-08 02:16:02,816 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2019-09-08 02:16:02,816 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions.
[2019-09-08 02:16:02,817 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2019-09-08 02:16:02,817 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-08 02:16:02,817 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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]
[2019-09-08 02:16:02,817 INFO  L418      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-08 02:16:02,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-08 02:16:02,818 INFO  L82        PathProgramCache]: Analyzing trace with hash 1775282106, now seen corresponding path program 4 times
[2019-09-08 02:16:02,818 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-08 02:16:02,818 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-08 02:16:02,819 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:02,820 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2019-09-08 02:16:02,820 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-08 02:16:02,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-09-08 02:16:02,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2019-09-08 02:16:02,886 INFO  L466         BasicCegarLoop]: Counterexample might be feasible
[2019-09-08 02:16:02,922 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 02:16:02 BoogieIcfgContainer
[2019-09-08 02:16:02,922 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-09-08 02:16:02,925 INFO  L168              Benchmark]: Toolchain (without parser) took 4733.56 ms. Allocated memory was 141.6 MB in the beginning and 257.4 MB in the end (delta: 115.9 MB). Free memory was 86.3 MB in the beginning and 206.1 MB in the end (delta: -119.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,926 INFO  L168              Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 141.6 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,927 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 635.54 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 86.1 MB in the beginning and 167.6 MB in the end (delta: -81.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,927 INFO  L168              Benchmark]: Boogie Preprocessor took 61.95 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 164.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,928 INFO  L168              Benchmark]: RCFGBuilder took 565.31 ms. Allocated memory is still 201.9 MB. Free memory was 164.6 MB in the beginning and 122.9 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,929 INFO  L168              Benchmark]: TraceAbstraction took 3466.59 ms. Allocated memory was 201.9 MB in the beginning and 257.4 MB in the end (delta: 55.6 MB). Free memory was 122.9 MB in the beginning and 206.1 MB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2019-09-08 02:16:02,933 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.47 ms. Allocated memory is still 141.6 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 635.54 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 86.1 MB in the beginning and 167.6 MB in the end (delta: -81.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 61.95 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 164.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 565.31 ms. Allocated memory is still 201.9 MB. Free memory was 164.6 MB in the beginning and 122.9 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 3466.59 ms. Allocated memory was 201.9 MB in the beginning and 257.4 MB in the end (delta: 55.6 MB). Free memory was 122.9 MB in the beginning and 206.1 MB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L592]              int len = 2;
        VAL         [len=2]
[L593]              len < 32 && __VERIFIER_nondet_int()
[L593]              len < 32 && __VERIFIER_nondet_int()
        VAL         [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0]
[L593]  COND FALSE  !(len < 32 && __VERIFIER_nondet_int())
[L596]  CALL, EXPR  sll_create(len + 1)
        VAL         [\old(len)=3]
[L564]              SLL head = ((void *)0);
        VAL         [\old(len)=3, head={0:0}, len=3]
[L565]  COND TRUE   len > 0
[L566]              SLL new_head = (SLL) malloc(sizeof(struct node));
        VAL         [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={1:0}, new_head={1:0}]
[L567]  COND FALSE  !(((void *)0) == new_head)
        VAL         [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={1:0}, new_head={1:0}]
[L570]              new_head->next = head
[L571]              head = new_head
[L572]              len--
        VAL         [\old(len)=3, head={1:0}, len=2, malloc(sizeof(struct node))={1:0}, new_head={1:0}]
[L565]  COND TRUE   len > 0
[L566]              SLL new_head = (SLL) malloc(sizeof(struct node));
        VAL         [\old(len)=3, head={1:0}, len=2, malloc(sizeof(struct node))={2:0}, new_head={2:0}]
[L567]  COND FALSE  !(((void *)0) == new_head)
        VAL         [\old(len)=3, head={1:0}, len=2, malloc(sizeof(struct node))={2:0}, new_head={2:0}]
[L570]              new_head->next = head
[L571]              head = new_head
[L572]              len--
        VAL         [\old(len)=3, head={2:0}, len=1, malloc(sizeof(struct node))={2:0}, new_head={2:0}]
[L565]  COND TRUE   len > 0
[L566]              SLL new_head = (SLL) malloc(sizeof(struct node));
        VAL         [\old(len)=3, head={2:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}]
[L567]  COND FALSE  !(((void *)0) == new_head)
        VAL         [\old(len)=3, head={2:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}]
[L570]              new_head->next = head
[L571]              head = new_head
[L572]              len--
        VAL         [\old(len)=3, head={-1:0}, len=0, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}]
[L565]  COND FALSE  !(len > 0)
        VAL         [\old(len)=3, head={-1:0}, len=0, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}]
[L574]              return head;
        VAL         [\old(len)=3, \result={-1:0}, head={-1:0}, len=0, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}]
[L596]  RET, EXPR   sll_create(len + 1)
        VAL         [len=2, sll_create(len + 1)={-1:0}]
[L596]              SLL s = sll_create(len + 1);
[L597]  CALL, EXPR  sll_length(s)
        VAL         [head={-1:0}]
[L577]              int len = 0;
        VAL         [head={-1:0}, head={-1:0}, len=0]
[L578]  COND TRUE   \read(head)
[L579]              len++
[L580]  EXPR        head->next
[L580]              head = head->next
[L578]  COND TRUE   \read(head)
[L579]              len++
[L580]  EXPR        head->next
[L580]              head = head->next
[L578]  COND TRUE   \read(head)
[L579]              len++
[L580]  EXPR        head->next
[L580]              head = head->next
[L578]  COND FALSE  !(\read(head))
        VAL         [head={0:0}, head={-1:0}, len=3]
[L582]              return len;
        VAL         [\result=3, head={0:0}, head={-1:0}, len=3]
[L597]  RET, EXPR   sll_length(s)
        VAL         [len=2, s={-1:0}, sll_length(s)=3]
[L597]  COND TRUE   len != sll_length(s)
[L602]              __VERIFIER_error()
        VAL         [len=2, s={-1:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 9 procedures, 48 locations, 1 error locations. UNSAFE Result, 3.4s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 166 SDtfs, 109 SDslu, 883 SDs, 0 SdLazy, 729 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 307 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 23654 SizeOfPredicates, 5 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 21/47 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...