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-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 22:08:06,635 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 22:08:06,637 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 22:08:06,650 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 22:08:06,650 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 22:08:06,651 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 22:08:06,652 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 22:08:06,654 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 22:08:06,656 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 22:08:06,657 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 22:08:06,658 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 22:08:06,659 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 22:08:06,659 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 22:08:06,661 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 22:08:06,661 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 22:08:06,664 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 22:08:06,665 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 22:08:06,666 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 22:08:06,670 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 22:08:06,674 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 22:08:06,676 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 22:08:06,678 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 22:08:06,680 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 22:08:06,681 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 22:08:06,684 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 22:08:06,684 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 22:08:06,685 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 22:08:06,686 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 22:08:06,688 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 22:08:06,690 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 22:08:06,690 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 22:08:06,691 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 22:08:06,691 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 22:08:06,692 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 22:08:06,696 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 22:08:06,697 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 22:08:06,697 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 22:08:06,697 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 22:08:06,698 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 22:08:06,700 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 22:08:06,704 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 22:08:06,705 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
[2019-10-13 22:08:06,725 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 22:08:06,725 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 22:08:06,726 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 22:08:06,726 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 22:08:06,727 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 22:08:06,727 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 22:08:06,727 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 22:08:06,727 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 22:08:06,727 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 22:08:06,728 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 22:08:06,728 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 22:08:06,728 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 22:08:06,728 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 22:08:06,728 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 22:08:06,729 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 22:08:06,729 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 22:08:06,729 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 22:08:06,729 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 22:08:06,729 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 22:08:06,730 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 22:08:06,730 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 22:08:06,730 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 22:08:06,730 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 22:08:06,730 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 22:08:06,731 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 22:08:06,731 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 22:08:06,731 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 22:08:06,731 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 22:08:06,731 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
[2019-10-13 22:08:07,078 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 22:08:07,097 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 22:08:07,101 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 22:08:07,102 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 22:08:07,103 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 22:08:07,103 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i
[2019-10-13 22:08:07,167 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b309abf0e/09b1092bd1cf43aeaf1eb03e72d6ce2a/FLAG377998a5a
[2019-10-13 22:08:07,951 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 22:08:07,952 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i
[2019-10-13 22:08:07,984 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b309abf0e/09b1092bd1cf43aeaf1eb03e72d6ce2a/FLAG377998a5a
[2019-10-13 22:08:08,007 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b309abf0e/09b1092bd1cf43aeaf1eb03e72d6ce2a
[2019-10-13 22:08:08,019 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 22:08:08,021 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 22:08:08,023 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 22:08:08,023 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 22:08:08,027 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 22:08:08,028 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:08" (1/1) ...
[2019-10-13 22:08:08,030 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781867a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:08, skipping insertion in model container
[2019-10-13 22:08:08,031 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:08" (1/1) ...
[2019-10-13 22:08:08,038 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 22:08:08,147 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 22:08:09,368 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 22:08:09,464 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 22:08:09,785 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 22:08:09,891 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 22:08:09,891 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09 WrapperNode
[2019-10-13 22:08:09,893 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 22:08:09,894 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 22:08:09,894 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 22:08:09,894 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 22:08:09,910 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:09,911 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:09,988 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:09,989 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:10,058 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:10,076 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:10,088 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (1/1) ...
[2019-10-13 22:08:10,157 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 22:08:10,158 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 22:08:10,158 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 22:08:10,158 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 22:08:10,160 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (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
[2019-10-13 22:08:10,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 22:08:10,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 22:08:10,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure spinlock_check
[2019-10-13 22:08:10,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore
[2019-10-13 22:08:10,218 INFO  L138     BoogieDeclarations]: Found implementation of procedure kmalloc
[2019-10-13 22:08:10,219 INFO  L138     BoogieDeclarations]: Found implementation of procedure kzalloc
[2019-10-13 22:08:10,219 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string
[2019-10-13 22:08:10,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_register
[2019-10-13 22:08:10,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb
[2019-10-13 22:08:10,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure __create_pipe
[2019-10-13 22:08:10,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper
[2019-10-13 22:08:10,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure irda_usb_dump_class_desc
[2019-10-13 22:08:10,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure irda_usb_find_class_desc
[2019-10-13 22:08:10,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_xbof_change
[2019-10-13 22:08:10,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_startup
[2019-10-13 22:08:10,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_open
[2019-10-13 22:08:10,223 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_prepare_write_buffer
[2019-10-13 22:08:10,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_process_read_urb
[2019-10-13 22:08:10,224 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_set_termios_callback
[2019-10-13 22:08:10,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_set_termios
[2019-10-13 22:08:10,225 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_init
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure ir_exit
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure init_module
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup_module
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_blast_assert
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_assume_stop
[2019-10-13 22:08:10,226 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent
[2019-10-13 22:08:10,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_free_coherent
[2019-10-13 22:08:10,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_alloc_urb
[2019-10-13 22:08:10,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_free_urb
[2019-10-13 22:08:10,227 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_check_final_state
[2019-10-13 22:08:10,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure __kfifo_out
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __kfifo_out_r
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure __kmalloc
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure dev_err
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_check_return_value
[2019-10-13 22:08:10,232 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure printk
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate
[2019-10-13 22:08:10,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_kref_put
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_port_tty_get
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure tty_termios_copy_hw
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_control_msg
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_deregister
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_register_driver
[2019-10-13 22:08:10,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_serial_deregister
[2019-10-13 22:08:10,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_serial_generic_open
[2019-10-13 22:08:10,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_serial_register
[2019-10-13 22:08:10,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure usb_submit_urb
[2019-10-13 22:08:10,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure external_alloc
[2019-10-13 22:08:10,235 INFO  L138     BoogieDeclarations]: Found implementation of procedure kfree
[2019-10-13 22:08:10,235 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure printk
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure spinlock_check
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore
[2019-10-13 22:08:10,236 INFO  L130     BoogieDeclarations]: Found specification of procedure kfree
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __kmalloc
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure kmalloc
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure kzalloc
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure init_module
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup_module
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure dev_err
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_kref_put
[2019-10-13 22:08:10,237 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_get_baud_rate
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_termios_copy_hw
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_port_tty_get
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag
[2019-10-13 22:08:10,238 INFO  L130     BoogieDeclarations]: Found specification of procedure tty_insert_flip_string
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_register_driver
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_register
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_deregister
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb
[2019-10-13 22:08:10,239 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_alloc_urb
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_free_urb
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_submit_urb
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_alloc_coherent
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_free_coherent
[2019-10-13 22:08:10,240 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_control_msg
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __create_pipe
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __kfifo_out
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __kfifo_out_r
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_serial_register
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_serial_deregister
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_serial_probe
[2019-10-13 22:08:10,241 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_serial_disconnect
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure usb_serial_generic_open
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_startup
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_open
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_prepare_write_buffer
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_process_read_urb
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_set_termios
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure irda_usb_dump_class_desc
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure irda_usb_find_class_desc
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_xbof_change
[2019-10-13 22:08:10,242 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_set_termios_callback
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_init
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ir_exit
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_check_final_state
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_check_return_value
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 22:08:10,243 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_blast_assert
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_assume_stop
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure external_alloc
[2019-10-13 22:08:10,244 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2019-10-13 22:08:10,245 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 22:08:10,972 WARN  L732   $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2019-10-13 22:08:11,168 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false;
[2019-10-13 22:08:11,168 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false;
[2019-10-13 22:08:11,212 WARN  L732   $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2019-10-13 22:08:11,277 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false;
[2019-10-13 22:08:11,278 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false;
[2019-10-13 22:08:11,748 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true;
[2019-10-13 22:08:11,756 WARN  L732   $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2019-10-13 22:08:11,847 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false;
[2019-10-13 22:08:11,847 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false;
[2019-10-13 22:08:14,612 WARN  L732   $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2019-10-13 22:08:14,699 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume false;
[2019-10-13 22:08:14,700 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume !false;
[2019-10-13 22:08:18,832 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 22:08:18,833 INFO  L284             CfgBuilder]: Removed 27 assume(true) statements.
[2019-10-13 22:08:18,834 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:18 BoogieIcfgContainer
[2019-10-13 22:08:18,835 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 22:08:18,838 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 22:08:18,838 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 22:08:18,842 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 22:08:18,843 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:08:08" (1/3) ...
[2019-10-13 22:08:18,844 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310931c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:18, skipping insertion in model container
[2019-10-13 22:08:18,844 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:09" (2/3) ...
[2019-10-13 22:08:18,845 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310931c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:18, skipping insertion in model container
[2019-10-13 22:08:18,845 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:18" (3/3) ...
[2019-10-13 22:08:18,847 INFO  L109   eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i
[2019-10-13 22:08:18,858 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 22:08:18,873 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 22:08:18,886 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 22:08:18,923 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 22:08:18,923 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 22:08:18,923 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 22:08:18,923 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 22:08:18,923 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 22:08:18,924 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 22:08:18,924 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 22:08:18,925 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 22:08:18,960 INFO  L276                IsEmpty]: Start isEmpty. Operand 273 states.
[2019-10-13 22:08:18,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2019-10-13 22:08:18,968 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:18,969 INFO  L380         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]
[2019-10-13 22:08:18,972 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:18,979 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:18,979 INFO  L82        PathProgramCache]: Analyzing trace with hash -1226998262, now seen corresponding path program 1 times
[2019-10-13 22:08:18,988 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:18,988 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084774690]
[2019-10-13 22:08:18,989 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:18,989 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:18,989 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:19,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:19,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 22:08:19,767 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084774690]
[2019-10-13 22:08:19,769 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:19,770 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 22:08:19,770 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338540378]
[2019-10-13 22:08:19,777 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 22:08:19,777 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:19,792 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 22:08:19,793 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 22:08:19,796 INFO  L87              Difference]: Start difference. First operand 273 states. Second operand 3 states.
[2019-10-13 22:08:19,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:08:19,977 INFO  L93              Difference]: Finished difference Result 678 states and 834 transitions.
[2019-10-13 22:08:19,980 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 22:08:19,982 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 24
[2019-10-13 22:08:19,983 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:08:20,020 INFO  L225             Difference]: With dead ends: 678
[2019-10-13 22:08:20,021 INFO  L226             Difference]: Without dead ends: 439
[2019-10-13 22:08:20,031 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 22:08:20,052 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 439 states.
[2019-10-13 22:08:20,199 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436.
[2019-10-13 22:08:20,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 436 states.
[2019-10-13 22:08:20,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions.
[2019-10-13 22:08:20,207 INFO  L78                 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 24
[2019-10-13 22:08:20,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:08:20,207 INFO  L462      AbstractCegarLoop]: Abstraction has 436 states and 509 transitions.
[2019-10-13 22:08:20,208 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 22:08:20,208 INFO  L276                IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions.
[2019-10-13 22:08:20,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2019-10-13 22:08:20,209 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:20,209 INFO  L380         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]
[2019-10-13 22:08:20,210 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:20,210 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:20,210 INFO  L82        PathProgramCache]: Analyzing trace with hash 617583801, now seen corresponding path program 1 times
[2019-10-13 22:08:20,210 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:20,211 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332218504]
[2019-10-13 22:08:20,211 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:20,211 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:20,211 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:20,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:20,471 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 22:08:20,472 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332218504]
[2019-10-13 22:08:20,472 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:20,473 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 22:08:20,473 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492749056]
[2019-10-13 22:08:20,475 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 22:08:20,476 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:20,476 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 22:08:20,476 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 22:08:20,477 INFO  L87              Difference]: Start difference. First operand 436 states and 509 transitions. Second operand 3 states.
[2019-10-13 22:08:20,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:08:20,525 INFO  L93              Difference]: Finished difference Result 438 states and 510 transitions.
[2019-10-13 22:08:20,525 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 22:08:20,525 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 25
[2019-10-13 22:08:20,525 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:08:20,533 INFO  L225             Difference]: With dead ends: 438
[2019-10-13 22:08:20,533 INFO  L226             Difference]: Without dead ends: 425
[2019-10-13 22:08:20,535 INFO  L600         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
[2019-10-13 22:08:20,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 425 states.
[2019-10-13 22:08:20,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425.
[2019-10-13 22:08:20,585 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 425 states.
[2019-10-13 22:08:20,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 493 transitions.
[2019-10-13 22:08:20,588 INFO  L78                 Accepts]: Start accepts. Automaton has 425 states and 493 transitions. Word has length 25
[2019-10-13 22:08:20,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:08:20,589 INFO  L462      AbstractCegarLoop]: Abstraction has 425 states and 493 transitions.
[2019-10-13 22:08:20,589 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 22:08:20,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 425 states and 493 transitions.
[2019-10-13 22:08:20,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2019-10-13 22:08:20,594 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:20,595 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 22:08:20,595 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:20,595 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:20,596 INFO  L82        PathProgramCache]: Analyzing trace with hash 1877764640, now seen corresponding path program 1 times
[2019-10-13 22:08:20,596 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:20,596 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075772107]
[2019-10-13 22:08:20,596 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:20,597 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:20,597 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:20,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:20,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 22:08:20,908 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075772107]
[2019-10-13 22:08:20,909 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:20,909 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 22:08:20,909 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665512823]
[2019-10-13 22:08:20,910 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 22:08:20,910 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:20,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 22:08:20,911 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-13 22:08:20,911 INFO  L87              Difference]: Start difference. First operand 425 states and 493 transitions. Second operand 8 states.
[2019-10-13 22:08:29,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:08:29,481 INFO  L93              Difference]: Finished difference Result 1220 states and 1447 transitions.
[2019-10-13 22:08:29,483 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 22:08:29,484 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 78
[2019-10-13 22:08:29,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:08:29,492 INFO  L225             Difference]: With dead ends: 1220
[2019-10-13 22:08:29,492 INFO  L226             Difference]: Without dead ends: 971
[2019-10-13 22:08:29,494 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 22:08:29,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 971 states.
[2019-10-13 22:08:29,565 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 930.
[2019-10-13 22:08:29,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 930 states.
[2019-10-13 22:08:29,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1107 transitions.
[2019-10-13 22:08:29,574 INFO  L78                 Accepts]: Start accepts. Automaton has 930 states and 1107 transitions. Word has length 78
[2019-10-13 22:08:29,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:08:29,575 INFO  L462      AbstractCegarLoop]: Abstraction has 930 states and 1107 transitions.
[2019-10-13 22:08:29,575 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 22:08:29,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 930 states and 1107 transitions.
[2019-10-13 22:08:29,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2019-10-13 22:08:29,584 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:29,584 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 22:08:29,585 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:29,585 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:29,585 INFO  L82        PathProgramCache]: Analyzing trace with hash -439771236, now seen corresponding path program 1 times
[2019-10-13 22:08:29,585 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:29,586 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918502594]
[2019-10-13 22:08:29,586 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:29,586 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:29,586 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:29,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:29,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 22:08:29,940 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918502594]
[2019-10-13 22:08:29,940 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:29,940 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 22:08:29,941 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463466191]
[2019-10-13 22:08:29,941 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-13 22:08:29,942 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:29,942 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-13 22:08:29,943 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-13 22:08:29,943 INFO  L87              Difference]: Start difference. First operand 930 states and 1107 transitions. Second operand 7 states.
[2019-10-13 22:08:38,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:08:38,195 INFO  L93              Difference]: Finished difference Result 1413 states and 1706 transitions.
[2019-10-13 22:08:38,195 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 22:08:38,196 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 78
[2019-10-13 22:08:38,196 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:08:38,207 INFO  L225             Difference]: With dead ends: 1413
[2019-10-13 22:08:38,208 INFO  L226             Difference]: Without dead ends: 1399
[2019-10-13 22:08:38,209 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-10-13 22:08:38,212 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1399 states.
[2019-10-13 22:08:38,313 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1351.
[2019-10-13 22:08:38,313 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1351 states.
[2019-10-13 22:08:38,322 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1615 transitions.
[2019-10-13 22:08:38,323 INFO  L78                 Accepts]: Start accepts. Automaton has 1351 states and 1615 transitions. Word has length 78
[2019-10-13 22:08:38,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:08:38,324 INFO  L462      AbstractCegarLoop]: Abstraction has 1351 states and 1615 transitions.
[2019-10-13 22:08:38,324 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-13 22:08:38,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 1351 states and 1615 transitions.
[2019-10-13 22:08:38,328 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-13 22:08:38,329 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:38,329 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 22:08:38,329 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:38,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:38,330 INFO  L82        PathProgramCache]: Analyzing trace with hash -1720719521, now seen corresponding path program 1 times
[2019-10-13 22:08:38,330 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:38,330 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226810345]
[2019-10-13 22:08:38,331 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:38,331 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:38,331 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:38,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:38,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 22:08:38,589 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226810345]
[2019-10-13 22:08:38,590 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:38,590 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 22:08:38,590 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691151231]
[2019-10-13 22:08:38,591 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 22:08:38,591 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:38,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 22:08:38,591 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 22:08:38,592 INFO  L87              Difference]: Start difference. First operand 1351 states and 1615 transitions. Second operand 5 states.
[2019-10-13 22:08:38,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:08:38,924 INFO  L93              Difference]: Finished difference Result 3730 states and 4483 transitions.
[2019-10-13 22:08:38,924 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 22:08:38,924 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 81
[2019-10-13 22:08:38,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:08:38,945 INFO  L225             Difference]: With dead ends: 3730
[2019-10-13 22:08:38,945 INFO  L226             Difference]: Without dead ends: 2662
[2019-10-13 22:08:38,950 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-10-13 22:08:38,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2662 states.
[2019-10-13 22:08:39,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2627.
[2019-10-13 22:08:39,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2627 states.
[2019-10-13 22:08:39,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3124 transitions.
[2019-10-13 22:08:39,140 INFO  L78                 Accepts]: Start accepts. Automaton has 2627 states and 3124 transitions. Word has length 81
[2019-10-13 22:08:39,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:08:39,141 INFO  L462      AbstractCegarLoop]: Abstraction has 2627 states and 3124 transitions.
[2019-10-13 22:08:39,142 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 22:08:39,142 INFO  L276                IsEmpty]: Start isEmpty. Operand 2627 states and 3124 transitions.
[2019-10-13 22:08:39,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2019-10-13 22:08:39,147 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 22:08:39,147 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 22:08:39,147 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:08:39,147 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:08:39,147 INFO  L82        PathProgramCache]: Analyzing trace with hash 230259465, now seen corresponding path program 1 times
[2019-10-13 22:08:39,148 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:08:39,148 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018329097]
[2019-10-13 22:08:39,148 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:39,148 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:08:39,148 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:08:39,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:08:39,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 22:08:39,481 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018329097]
[2019-10-13 22:08:39,481 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:08:39,481 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 22:08:39,481 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300545092]
[2019-10-13 22:08:39,482 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 22:08:39,482 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:08:39,482 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 22:08:39,483 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-13 22:08:39,483 INFO  L87              Difference]: Start difference. First operand 2627 states and 3124 transitions. Second operand 8 states.