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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i


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


This is Ultimate 0.1.24-36ac518-m
[2019-10-07 08:52:53,912 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-07 08:52:53,916 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-07 08:52:53,934 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-07 08:52:53,935 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-07 08:52:53,937 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-07 08:52:53,938 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-07 08:52:53,948 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-07 08:52:53,951 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-07 08:52:53,951 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-07 08:52:53,952 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-07 08:52:53,953 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-07 08:52:53,954 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-07 08:52:53,955 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-07 08:52:53,956 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-07 08:52:53,957 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-07 08:52:53,957 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-07 08:52:53,958 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-07 08:52:53,960 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-07 08:52:53,962 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-07 08:52:53,963 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-07 08:52:53,964 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-07 08:52:53,965 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-07 08:52:53,966 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-07 08:52:53,968 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-07 08:52:53,968 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-07 08:52:53,968 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-07 08:52:53,971 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-07 08:52:53,972 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-07 08:52:53,973 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-07 08:52:53,973 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-07 08:52:53,974 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-07 08:52:53,975 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-07 08:52:53,977 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-07 08:52:53,978 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-07 08:52:53,978 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-07 08:52:53,983 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-07 08:52:53,983 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-07 08:52:53,983 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-07 08:52:53,984 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-07 08:52:53,985 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-07 08:52:53,986 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
[2019-10-07 08:52:54,006 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-07 08:52:54,007 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-07 08:52:54,009 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-07 08:52:54,009 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-07 08:52:54,009 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-07 08:52:54,009 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-07 08:52:54,010 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-07 08:52:54,010 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-07 08:52:54,010 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-07 08:52:54,010 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-07 08:52:54,011 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-07 08:52:54,011 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-07 08:52:54,012 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-07 08:52:54,012 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-07 08:52:54,012 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-07 08:52:54,012 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-07 08:52:54,013 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-07 08:52:54,013 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-07 08:52:54,013 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-07 08:52:54,013 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-07 08:52:54,014 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-07 08:52:54,014 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-07 08:52:54,014 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-07 08:52:54,014 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-07 08:52:54,014 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-07 08:52:54,015 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-07 08:52:54,015 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-07 08:52:54,015 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-07 08:52:54,015 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK
[2019-10-07 08:52:54,286 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-07 08:52:54,303 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-07 08:52:54,306 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-07 08:52:54,308 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-07 08:52:54,308 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-07 08:52:54,309 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i
[2019-10-07 08:52:54,385 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/052c4619b/23d846a5312543518152683d9afa8aff/FLAGa0f9995a3
[2019-10-07 08:52:55,174 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-07 08:52:55,175 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i
[2019-10-07 08:52:55,217 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/052c4619b/23d846a5312543518152683d9afa8aff/FLAGa0f9995a3
[2019-10-07 08:52:55,249 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/052c4619b/23d846a5312543518152683d9afa8aff
[2019-10-07 08:52:55,259 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-07 08:52:55,261 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-07 08:52:55,262 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-07 08:52:55,262 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-07 08:52:55,266 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-07 08:52:55,267 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 08:52:55" (1/1) ...
[2019-10-07 08:52:55,270 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6764f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:55, skipping insertion in model container
[2019-10-07 08:52:55,271 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 08:52:55" (1/1) ...
[2019-10-07 08:52:55,278 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-07 08:52:55,389 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-07 08:52:56,575 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-07 08:52:56,607 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-07 08:52:56,879 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-07 08:52:56,949 INFO  L192         MainTranslator]: Completed translation
[2019-10-07 08:52:56,950 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56 WrapperNode
[2019-10-07 08:52:56,951 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-07 08:52:56,952 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-07 08:52:56,952 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-07 08:52:56,952 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-07 08:52:56,967 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:56,968 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,020 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,021 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,074 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,084 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,092 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (1/1) ...
[2019-10-07 08:52:57,103 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-07 08:52:57,104 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-07 08:52:57,104 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-07 08:52:57,104 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-07 08:52:57,105 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (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
[2019-10-07 08:52:57,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-07 08:52:57,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-07 08:52:57,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID
[2019-10-07 08:52:57,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_mac_header
[2019-10-07 08:52:57,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header
[2019-10-07 08:52:57,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data
[2019-10-07 08:52:57,170 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc
[2019-10-07 08:52:57,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2019-10-07 08:52:57,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_zalloc
[2019-10-07 08:52:57,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_int
[2019-10-07 08:52:57,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr
[2019-10-07 08:52:57,171 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong
[2019-10-07 08:52:57,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_error
[2019-10-07 08:52:57,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_stop
[2019-10-07 08:52:57,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect
[2019-10-07 08:52:57,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap
[2019-10-07 08:52:57,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure netdev_priv
[2019-10-07 08:52:57,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq
[2019-10-07 08:52:57,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure rx
[2019-10-07 08:52:57,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure build_header
[2019-10-07 08:52:57,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure prepare_tx
[2019-10-07 08:52:57,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure ack_tx
[2019-10-07 08:52:57,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure arcnet_cap_init
[2019-10-07 08:52:57,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure capmode_module_init
[2019-10-07 08:52:57,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure capmode_module_exit
[2019-10-07 08:52:57,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1
[2019-10-07 08:52:57,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-07 08:52:57,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5
[2019-10-07 08:52:57,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6
[2019-10-07 08:52:57,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7
[2019-10-07 08:52:57,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8
[2019-10-07 08:52:57,177 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11
[2019-10-07 08:52:57,230 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_17
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_init
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_add
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_remove
[2019-10-07 08:52:57,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_contains
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_err_ptr
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_ptr_err
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc
[2019-10-07 08:52:57,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_current
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_check_final_state
[2019-10-07 08:52:57,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_irq
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure printk
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_pull
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_push
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_put
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure external_alloc
[2019-10-07 08:52:57,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure kfree
[2019-10-07 08:52:57,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset
[2019-10-07 08:52:57,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2019-10-07 08:52:57,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy
[2019-10-07 08:52:57,235 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-07 08:52:57,235 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_expect
[2019-10-07 08:52:57,235 INFO  L130     BoogieDeclarations]: Found specification of procedure printk
[2019-10-07 08:52:57,235 INFO  L130     BoogieDeclarations]: Found specification of procedure memcpy
[2019-10-07 08:52:57,236 INFO  L130     BoogieDeclarations]: Found specification of procedure memset
[2019-10-07 08:52:57,236 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6
[2019-10-07 08:52:57,236 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7
[2019-10-07 08:52:57,237 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8
[2019-10-07 08:52:57,237 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11
[2019-10-07 08:52:57,238 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13
[2019-10-07 08:52:57,238 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5
[2019-10-07 08:52:57,238 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14
[2019-10-07 08:52:57,239 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_put
[2019-10-07 08:52:57,239 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_push
[2019-10-07 08:52:57,239 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_pull
[2019-10-07 08:52:57,239 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_mac_header
[2019-10-07 08:52:57,240 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-07 08:52:57,240 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-07 08:52:57,240 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_reset_mac_header
[2019-10-07 08:52:57,240 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-07 08:52:57,241 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data
[2019-10-07 08:52:57,241 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy
[2019-10-07 08:52:57,241 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_alloc
[2019-10-07 08:52:57,241 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free_int
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong
[2019-10-07 08:52:57,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_malloc
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_zalloc
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_int
[2019-10-07 08:52:57,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_ptr
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_ulong
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_error
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_stop
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_trap
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure netdev_priv
[2019-10-07 08:52:57,244 INFO  L130     BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq
[2019-10-07 08:52:57,245 INFO  L130     BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq
[2019-10-07 08:52:57,245 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15
[2019-10-07 08:52:57,245 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netif_rx_17
[2019-10-07 08:52:57,245 INFO  L130     BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto
[2019-10-07 08:52:57,245 INFO  L130     BoogieDeclarations]: Found specification of procedure rx
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure build_header
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure prepare_tx
[2019-10-07 08:52:57,246 INFO  L130     BoogieDeclarations]: Found specification of procedure ack_tx
[2019-10-07 08:52:57,247 INFO  L130     BoogieDeclarations]: Found specification of procedure arcnet_cap_init
[2019-10-07 08:52:57,247 INFO  L130     BoogieDeclarations]: Found specification of procedure capmode_module_init
[2019-10-07 08:52:57,247 INFO  L130     BoogieDeclarations]: Found specification of procedure capmode_module_exit
[2019-10-07 08:52:57,248 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize
[2019-10-07 08:52:57,248 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_check_final_state
[2019-10-07 08:52:57,248 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-07 08:52:57,248 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset
[2019-10-07 08:52:57,249 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-07 08:52:57,249 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_init
[2019-10-07 08:52:57,249 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_add
[2019-10-07 08:52:57,249 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_remove
[2019-10-07 08:52:57,249 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_contains
[2019-10-07 08:52:57,250 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_is_empty
[2019-10-07 08:52:57,253 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err
[2019-10-07 08:52:57,253 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_err_ptr
[2019-10-07 08:52:57,253 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_ptr_err
[2019-10-07 08:52:57,253 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null
[2019-10-07 08:52:57,253 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb
[2019-10-07 08:52:57,254 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb
[2019-10-07 08:52:57,254 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_current
[2019-10-07 08:52:57,254 INFO  L130     BoogieDeclarations]: Found specification of procedure external_alloc
[2019-10-07 08:52:57,254 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-07 08:52:57,255 INFO  L130     BoogieDeclarations]: Found specification of procedure kfree
[2019-10-07 08:52:57,259 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-07 08:52:57,259 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-07 08:52:57,260 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2019-10-07 08:52:57,260 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-07 08:52:57,260 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2019-10-07 08:52:57,260 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~int
[2019-10-07 08:52:57,261 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2019-10-07 08:52:57,261 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2019-10-07 08:52:58,196 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true;
[2019-10-07 08:52:59,454 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-07 08:52:59,454 INFO  L284             CfgBuilder]: Removed 4 assume(true) statements.
[2019-10-07 08:52:59,456 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 08:52:59 BoogieIcfgContainer
[2019-10-07 08:52:59,456 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-07 08:52:59,457 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-07 08:52:59,457 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-07 08:52:59,460 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-07 08:52:59,461 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 08:52:55" (1/3) ...
[2019-10-07 08:52:59,462 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b66951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 08:52:59, skipping insertion in model container
[2019-10-07 08:52:59,462 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 08:52:56" (2/3) ...
[2019-10-07 08:52:59,462 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b66951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 08:52:59, skipping insertion in model container
[2019-10-07 08:52:59,462 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 08:52:59" (3/3) ...
[2019-10-07 08:52:59,464 INFO  L109   eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--capmode.ko-entry_point.cil.out.i
[2019-10-07 08:52:59,474 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-07 08:52:59,484 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-07 08:52:59,495 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-07 08:52:59,533 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-07 08:52:59,533 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-07 08:52:59,534 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-07 08:52:59,534 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-07 08:52:59,534 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-07 08:52:59,534 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-07 08:52:59,534 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-07 08:52:59,534 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-07 08:52:59,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 266 states.
[2019-10-07 08:52:59,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2019-10-07 08:52:59,573 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:52:59,574 INFO  L385         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-07 08:52:59,577 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:52:59,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:52:59,583 INFO  L82        PathProgramCache]: Analyzing trace with hash -511169751, now seen corresponding path program 1 times
[2019-10-07 08:52:59,591 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:52:59,592 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:52:59,592 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:52:59,592 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:52:59,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:52:59,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:00,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-07 08:53:00,045 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:00,045 INFO  L211   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-07 08:53:00,045 INFO  L224   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-07 08:53:00,054 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-07 08:53:00,068 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-07 08:53:00,070 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-07 08:53:00,072 INFO  L87              Difference]: Start difference. First operand 266 states. Second operand 3 states.
[2019-10-07 08:53:00,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-07 08:53:00,278 INFO  L93              Difference]: Finished difference Result 651 states and 844 transitions.
[2019-10-07 08:53:00,279 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-07 08:53:00,281 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 46
[2019-10-07 08:53:00,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-07 08:53:00,299 INFO  L225             Difference]: With dead ends: 651
[2019-10-07 08:53:00,299 INFO  L226             Difference]: Without dead ends: 412
[2019-10-07 08:53:00,306 INFO  L606         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-07 08:53:00,326 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 412 states.
[2019-10-07 08:53:00,398 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412.
[2019-10-07 08:53:00,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 412 states.
[2019-10-07 08:53:00,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 508 transitions.
[2019-10-07 08:53:00,405 INFO  L78                 Accepts]: Start accepts. Automaton has 412 states and 508 transitions. Word has length 46
[2019-10-07 08:53:00,406 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-07 08:53:00,406 INFO  L462      AbstractCegarLoop]: Abstraction has 412 states and 508 transitions.
[2019-10-07 08:53:00,406 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-07 08:53:00,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 412 states and 508 transitions.
[2019-10-07 08:53:00,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2019-10-07 08:53:00,410 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:53:00,410 INFO  L385         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-07 08:53:00,411 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:53:00,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:53:00,411 INFO  L82        PathProgramCache]: Analyzing trace with hash -916139688, now seen corresponding path program 1 times
[2019-10-07 08:53:00,411 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:53:00,412 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:00,412 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:00,412 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:00,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:53:00,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:00,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-07 08:53:00,678 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:00,679 INFO  L211   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-07 08:53:00,679 INFO  L224   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-07 08:53:00,682 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-07 08:53:00,682 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-07 08:53:00,683 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-07 08:53:00,683 INFO  L87              Difference]: Start difference. First operand 412 states and 508 transitions. Second operand 3 states.
[2019-10-07 08:53:00,783 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-07 08:53:00,783 INFO  L93              Difference]: Finished difference Result 807 states and 1000 transitions.
[2019-10-07 08:53:00,784 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-07 08:53:00,784 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 51
[2019-10-07 08:53:00,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-07 08:53:00,793 INFO  L225             Difference]: With dead ends: 807
[2019-10-07 08:53:00,794 INFO  L226             Difference]: Without dead ends: 413
[2019-10-07 08:53:00,797 INFO  L606         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-07 08:53:00,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 413 states.
[2019-10-07 08:53:00,844 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413.
[2019-10-07 08:53:00,845 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 413 states.
[2019-10-07 08:53:00,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 509 transitions.
[2019-10-07 08:53:00,849 INFO  L78                 Accepts]: Start accepts. Automaton has 413 states and 509 transitions. Word has length 51
[2019-10-07 08:53:00,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-07 08:53:00,850 INFO  L462      AbstractCegarLoop]: Abstraction has 413 states and 509 transitions.
[2019-10-07 08:53:00,850 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-07 08:53:00,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 413 states and 509 transitions.
[2019-10-07 08:53:00,854 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2019-10-07 08:53:00,854 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:53:00,854 INFO  L385         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-07 08:53:00,855 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:53:00,855 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:53:00,857 INFO  L82        PathProgramCache]: Analyzing trace with hash -932071163, now seen corresponding path program 1 times
[2019-10-07 08:53:00,858 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:53:00,858 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:00,858 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:00,858 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:00,858 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:53:00,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:01,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-07 08:53:01,065 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:01,066 INFO  L211   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-07 08:53:01,066 INFO  L224   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-07 08:53:01,067 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-07 08:53:01,067 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-07 08:53:01,067 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-07 08:53:01,068 INFO  L87              Difference]: Start difference. First operand 413 states and 509 transitions. Second operand 5 states.
[2019-10-07 08:53:01,170 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-07 08:53:01,171 INFO  L93              Difference]: Finished difference Result 807 states and 996 transitions.
[2019-10-07 08:53:01,172 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-07 08:53:01,172 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 52
[2019-10-07 08:53:01,172 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-07 08:53:01,178 INFO  L225             Difference]: With dead ends: 807
[2019-10-07 08:53:01,178 INFO  L226             Difference]: Without dead ends: 412
[2019-10-07 08:53:01,180 INFO  L606         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-07 08:53:01,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 412 states.
[2019-10-07 08:53:01,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412.
[2019-10-07 08:53:01,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 412 states.
[2019-10-07 08:53:01,226 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 505 transitions.
[2019-10-07 08:53:01,228 INFO  L78                 Accepts]: Start accepts. Automaton has 412 states and 505 transitions. Word has length 52
[2019-10-07 08:53:01,229 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-07 08:53:01,230 INFO  L462      AbstractCegarLoop]: Abstraction has 412 states and 505 transitions.
[2019-10-07 08:53:01,230 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-07 08:53:01,230 INFO  L276                IsEmpty]: Start isEmpty. Operand 412 states and 505 transitions.
[2019-10-07 08:53:01,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2019-10-07 08:53:01,243 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:53:01,244 INFO  L385         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 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]
[2019-10-07 08:53:01,244 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:53:01,244 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:53:01,244 INFO  L82        PathProgramCache]: Analyzing trace with hash -918360113, now seen corresponding path program 1 times
[2019-10-07 08:53:01,245 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:53:01,245 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:01,245 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:01,245 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:01,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:53:01,306 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:01,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2019-10-07 08:53:01,479 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:01,479 INFO  L211   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-07 08:53:01,479 INFO  L224   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-07 08:53:01,481 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-07 08:53:01,481 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-07 08:53:01,481 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2019-10-07 08:53:01,481 INFO  L87              Difference]: Start difference. First operand 412 states and 505 transitions. Second operand 6 states.
[2019-10-07 08:53:02,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-07 08:53:02,107 INFO  L93              Difference]: Finished difference Result 814 states and 1016 transitions.
[2019-10-07 08:53:02,107 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-07 08:53:02,108 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 84
[2019-10-07 08:53:02,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-07 08:53:02,117 INFO  L225             Difference]: With dead ends: 814
[2019-10-07 08:53:02,117 INFO  L226             Difference]: Without dead ends: 797
[2019-10-07 08:53:02,118 INFO  L606         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2019-10-07 08:53:02,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 797 states.
[2019-10-07 08:53:02,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797.
[2019-10-07 08:53:02,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 797 states.
[2019-10-07 08:53:02,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 999 transitions.
[2019-10-07 08:53:02,181 INFO  L78                 Accepts]: Start accepts. Automaton has 797 states and 999 transitions. Word has length 84
[2019-10-07 08:53:02,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-07 08:53:02,182 INFO  L462      AbstractCegarLoop]: Abstraction has 797 states and 999 transitions.
[2019-10-07 08:53:02,182 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-07 08:53:02,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 797 states and 999 transitions.
[2019-10-07 08:53:02,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2019-10-07 08:53:02,189 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:53:02,190 INFO  L385         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-07 08:53:02,190 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:53:02,190 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:53:02,190 INFO  L82        PathProgramCache]: Analyzing trace with hash -1308065827, now seen corresponding path program 1 times
[2019-10-07 08:53:02,191 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:53:02,191 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:02,191 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:02,191 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:02,192 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:53:02,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:02,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked.
[2019-10-07 08:53:02,439 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:02,439 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3
[2019-10-07 08:53:02,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-07 08:53:02,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:02,866 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-10-07 08:53:02,880 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-07 08:53:02,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2019-10-07 08:53:02,941 INFO  L322         TraceCheckSpWp]: Computing backward predicates...
[2019-10-07 08:53:03,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2019-10-07 08:53:03,197 INFO  L211   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-07 08:53:03,198 INFO  L224   tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7
[2019-10-07 08:53:03,198 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-07 08:53:03,199 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-07 08:53:03,199 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-07 08:53:03,199 INFO  L87              Difference]: Start difference. First operand 797 states and 999 transitions. Second operand 5 states.
[2019-10-07 08:53:03,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-07 08:53:03,255 INFO  L93              Difference]: Finished difference Result 1579 states and 1982 transitions.
[2019-10-07 08:53:03,256 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-07 08:53:03,256 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 128
[2019-10-07 08:53:03,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-07 08:53:03,261 INFO  L225             Difference]: With dead ends: 1579
[2019-10-07 08:53:03,261 INFO  L226             Difference]: Without dead ends: 798
[2019-10-07 08:53:03,265 INFO  L606         BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-10-07 08:53:03,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 798 states.
[2019-10-07 08:53:03,305 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798.
[2019-10-07 08:53:03,305 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 798 states.
[2019-10-07 08:53:03,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1000 transitions.
[2019-10-07 08:53:03,310 INFO  L78                 Accepts]: Start accepts. Automaton has 798 states and 1000 transitions. Word has length 128
[2019-10-07 08:53:03,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-07 08:53:03,310 INFO  L462      AbstractCegarLoop]: Abstraction has 798 states and 1000 transitions.
[2019-10-07 08:53:03,310 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-07 08:53:03,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 798 states and 1000 transitions.
[2019-10-07 08:53:03,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2019-10-07 08:53:03,314 INFO  L377         BasicCegarLoop]: Found error trace
[2019-10-07 08:53:03,314 INFO  L385         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-07 08:53:03,520 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-07 08:53:03,520 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-07 08:53:03,521 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-07 08:53:03,521 INFO  L82        PathProgramCache]: Analyzing trace with hash -1430123746, now seen corresponding path program 1 times
[2019-10-07 08:53:03,522 INFO  L150   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-07 08:53:03,522 INFO  L231   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:03,522 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:03,523 INFO  L117   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-07 08:53:03,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-07 08:53:03,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:03,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-07 08:53:03,660 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig
[2019-10-07 08:53:03,660 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3
[2019-10-07 08:53:03,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-07 08:53:04,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-07 08:53:04,033 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-10-07 08:53:04,040 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-07 08:53:04,068 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2019-10-07 08:53:04,068 INFO  L322         TraceCheckSpWp]: Computing backward predicates...
[2019-10-07 08:53:04,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-10-07 08:53:04,232 INFO  L286   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa
[2019-10-07 08:53:04,263 INFO  L162        IcfgInterpreter]: Started Sifa with 103 locations of interest
[2019-10-07 08:53:04,263 INFO  L169        IcfgInterpreter]: Building call graph
[2019-10-07 08:53:04,269 INFO  L174        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-07 08:53:04,278 INFO  L179        IcfgInterpreter]: Starting interpretation
[2019-10-07 08:53:04,278 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-07 08:53:06,151 WARN  L191               SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47
[2019-10-07 08:53:06,719 WARN  L191               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:06,866 WARN  L191               SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:07,139 WARN  L191               SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:07,354 WARN  L191               SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:07,616 WARN  L191               SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 364
[2019-10-07 08:53:07,748 WARN  L191               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:07,882 WARN  L191               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:08,004 WARN  L191               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:08,175 WARN  L191               SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 364
[2019-10-07 08:53:08,290 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 145 for LOIs
[2019-10-07 08:53:08,458 INFO  L199        IcfgInterpreter]: Interpreting procedure main with input of size 400 for LOIs
[2019-10-07 08:53:08,831 WARN  L191               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 428
[2019-10-07 08:53:09,007 WARN  L191               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 418
[2019-10-07 08:53:09,242 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 451
[2019-10-07 08:53:10,919 WARN  L191               SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 363
[2019-10-07 08:53:11,141 WARN  L191               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 673
[2019-10-07 08:53:11,669 WARN  L191               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 670
[2019-10-07 08:53:11,950 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-07 08:53:11,952 FATAL L?                        ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:90)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:122)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε
	at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135)
	at java.lang.Iterable.forEach(Iterable.java:75)
	at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78)
	at java.util.HashMap.computeIfAbsent(HashMap.java:1127)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139)
	at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.<init>(SifaRunner.java:99)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287)
	... 21 more
[2019-10-07 08:53:11,962 INFO  L168              Benchmark]: Toolchain (without parser) took 16701.15 ms. Allocated memory was 138.4 MB in the beginning and 516.4 MB in the end (delta: 378.0 MB). Free memory was 94.6 MB in the beginning and 185.8 MB in the end (delta: -91.2 MB). Peak memory consumption was 286.8 MB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,964 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,967 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 1689.07 ms. Allocated memory was 138.4 MB in the beginning and 208.1 MB in the end (delta: 69.7 MB). Free memory was 94.2 MB in the beginning and 105.6 MB in the end (delta: -11.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,968 INFO  L168              Benchmark]: Boogie Preprocessor took 151.97 ms. Allocated memory is still 208.1 MB. Free memory was 105.6 MB in the beginning and 99.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,969 INFO  L168              Benchmark]: RCFGBuilder took 2352.27 ms. Allocated memory was 208.1 MB in the beginning and 264.8 MB in the end (delta: 56.6 MB). Free memory was 99.0 MB in the beginning and 150.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,969 INFO  L168              Benchmark]: TraceAbstraction took 12503.14 ms. Allocated memory was 264.8 MB in the beginning and 516.4 MB in the end (delta: 251.7 MB). Free memory was 150.0 MB in the beginning and 185.8 MB in the end (delta: -35.8 MB). Peak memory consumption was 215.8 MB. Max. memory is 7.1 GB.
[2019-10-07 08:53:11,976 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 1689.07 ms. Allocated memory was 138.4 MB in the beginning and 208.1 MB in the end (delta: 69.7 MB). Free memory was 94.2 MB in the beginning and 105.6 MB in the end (delta: -11.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 151.97 ms. Allocated memory is still 208.1 MB. Free memory was 105.6 MB in the beginning and 99.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 2352.27 ms. Allocated memory was 208.1 MB in the beginning and 264.8 MB in the end (delta: 56.6 MB). Free memory was 99.0 MB in the beginning and 150.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 12503.14 ms. Allocated memory was 264.8 MB in the beginning and 516.4 MB in the end (delta: 251.7 MB). Free memory was 150.0 MB in the beginning and 185.8 MB in the end (delta: -35.8 MB). Peak memory consumption was 215.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε
    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...