/usr/bin/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_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:48:44,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:48:44,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:48:44,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:48:44,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:48:44,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:48:44,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:48:44,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:48:44,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:48:44,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:48:44,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:48:44,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:48:44,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:48:44,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:48:44,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:48:44,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:48:44,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:48:44,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:48:44,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:48:45,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:48:45,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:48:45,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:48:45,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:48:45,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:48:45,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:48:45,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:48:45,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:48:45,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:48:45,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:48:45,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:48:45,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:48:45,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:48:45,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:48:45,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:48:45,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:48:45,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:48:45,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:48:45,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:48:45,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:48:45,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:48:45,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:48:45,033 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 [2019-11-07 02:48:45,053 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:48:45,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:48:45,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:48:45,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:48:45,056 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:48:45,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:48:45,056 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:48:45,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:48:45,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:48:45,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:48:45,058 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:48:45,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:48:45,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:48:45,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:48:45,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:48:45,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:48:45,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:48:45,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:48:45,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:48:45,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:48:45,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:48:45,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:48:45,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:48:45,060 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 [2019-11-07 02:48:45,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:48:45,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:48:45,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:48:45,362 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:48:45,362 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:48:45,363 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-11-07 02:48:45,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec567217/8ba707908038473d983cbead091c2f81/FLAGe8f8a3fb9 [2019-11-07 02:48:46,219 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:48:46,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-11-07 02:48:46,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec567217/8ba707908038473d983cbead091c2f81/FLAGe8f8a3fb9 [2019-11-07 02:48:46,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec567217/8ba707908038473d983cbead091c2f81 [2019-11-07 02:48:46,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:48:46,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:48:46,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:48:46,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:48:46,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:48:46,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:46" (1/1) ... [2019-11-07 02:48:46,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb39e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:46, skipping insertion in model container [2019-11-07 02:48:46,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:46" (1/1) ... [2019-11-07 02:48:46,822 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:48:46,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:48:48,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:48:48,740 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:48:49,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:48:49,306 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:48:49,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49 WrapperNode [2019-11-07 02:48:49,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:48:49,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:48:49,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:48:49,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:48:49,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (1/1) ... [2019-11-07 02:48:49,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:48:49,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:48:49,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:48:49,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:48:49,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (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 [2019-11-07 02:48:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:48:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:48:49,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:48:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-07 02:48:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 02:48:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 02:48:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-07 02:48:49,659 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-07 02:48:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-11-07 02:48:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-11-07 02:48:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-11-07 02:48:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-07 02:48:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-07 02:48:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-07 02:48:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 02:48:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-11-07 02:48:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-11-07 02:48:49,665 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-11-07 02:48:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-11-07 02:48:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-07 02:48:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2019-11-07 02:48:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-11-07 02:48:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-11-07 02:48:49,667 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-11-07 02:48:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-11-07 02:48:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-11-07 02:48:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-11-07 02:48:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-11-07 02:48:49,668 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 02:48:49,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-11-07 02:48:49,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_open [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2019-11-07 02:48:49,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_read [2019-11-07 02:48:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_write [2019-11-07 02:48:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2019-11-07 02:48:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2019-11-07 02:48:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_receive [2019-11-07 02:48:49,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_wakeup [2019-11-07 02:48:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_init [2019-11-07 02:48:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_ioctl [2019-11-07 02:48:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_process [2019-11-07 02:48:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_txmunge [2019-11-07 02:48:49,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_send [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_flush_output [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_input [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_cleanup [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-07 02:48:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-11-07 02:48:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:48:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-07 02:48:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-07 02:48:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-07 02:48:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-07 02:48:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-07 02:48:49,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-11-07 02:48:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-11-07 02:48:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-11-07 02:48:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_17 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_18 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-07 02:48:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-07 02:48:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-07 02:48:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-07 02:48:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:48:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 02:48:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-11-07 02:48:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-11-07 02:48:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-11-07 02:48:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-11-07 02:48:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_trylock_bh [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-11-07 02:48:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-11-07 02:48:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-11-07 02:48:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 02:48:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-11-07 02:48:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-11-07 02:48:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-11-07 02:48:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-11-07 02:48:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-11-07 02:48:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-11-07 02:48:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-11-07 02:48:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-11-07 02:48:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2019-11-07 02:48:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:48:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-07 02:48:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-11-07 02:48:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-11-07 02:48:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-11-07 02:48:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-11-07 02:48:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-11-07 02:48:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-11-07 02:48:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-11-07 02:48:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-11-07 02:48:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:48:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:48:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 02:48:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-07 02:48:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 02:48:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-07 02:48:49,706 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_trylock_bh [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-11-07 02:48:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 02:48:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-11-07 02:48:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-11-07 02:48:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-11-07 02:48:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-11-07 02:48:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-11-07 02:48:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-07 02:48:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 02:48:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-11-07 02:48:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-07 02:48:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-07 02:48:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-11-07 02:48:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_17 [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_18 [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-11-07 02:48:49,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-07 02:48:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2019-11-07 02:48:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-11-07 02:48:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 02:48:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-11-07 02:48:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-11-07 02:48:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-11-07 02:48:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_txmunge [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_send [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_ioctl [2019-11-07 02:48:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_process [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_flush_output [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_input [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2019-11-07 02:48:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_open [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_read [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_write [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_receive [2019-11-07 02:48:49,723 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_wakeup [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_init [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_cleanup [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:48:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 02:48:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:48:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 02:48:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 02:48:50,399 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 02:48:59,962 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:48:59,962 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 02:48:59,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:59 BoogieIcfgContainer [2019-11-07 02:48:59,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:48:59,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:48:59,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:48:59,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:48:59,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:48:46" (1/3) ... [2019-11-07 02:48:59,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29956324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:59, skipping insertion in model container [2019-11-07 02:48:59,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:49" (2/3) ... [2019-11-07 02:48:59,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29956324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:59, skipping insertion in model container [2019-11-07 02:48:59,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:59" (3/3) ... [2019-11-07 02:48:59,973 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2019-11-07 02:48:59,984 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:48:59,994 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:49:00,007 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:49:00,040 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:49:00,040 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:49:00,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:49:00,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:49:00,041 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:49:00,041 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:49:00,041 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:49:00,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:49:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states. [2019-11-07 02:49:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 02:49:00,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:00,093 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:00,095 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 978774204, now seen corresponding path program 1 times [2019-11-07 02:49:00,112 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:00,112 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673042730] [2019-11-07 02:49:00,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-07 02:49:00,642 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673042730] [2019-11-07 02:49:00,643 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:00,643 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:00,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657346181] [2019-11-07 02:49:00,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:00,650 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:00,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:00,667 INFO L87 Difference]: Start difference. First operand 812 states. Second operand 3 states. [2019-11-07 02:49:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:00,986 INFO L93 Difference]: Finished difference Result 2188 states and 2811 transitions. [2019-11-07 02:49:00,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:00,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-11-07 02:49:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:01,018 INFO L225 Difference]: With dead ends: 2188 [2019-11-07 02:49:01,018 INFO L226 Difference]: Without dead ends: 1438 [2019-11-07 02:49:01,031 INFO L630 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 [2019-11-07 02:49:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2019-11-07 02:49:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2019-11-07 02:49:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2019-11-07 02:49:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1795 transitions. [2019-11-07 02:49:01,264 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1795 transitions. Word has length 95 [2019-11-07 02:49:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:01,265 INFO L462 AbstractCegarLoop]: Abstraction has 1438 states and 1795 transitions. [2019-11-07 02:49:01,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1795 transitions. [2019-11-07 02:49:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 02:49:01,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:01,272 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:01,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2098059860, now seen corresponding path program 1 times [2019-11-07 02:49:01,274 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:01,274 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114357442] [2019-11-07 02:49:01,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:01,658 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2019-11-07 02:49:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-07 02:49:01,682 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114357442] [2019-11-07 02:49:01,682 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:01,682 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:49:01,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687120176] [2019-11-07 02:49:01,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:49:01,685 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:01,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:49:01,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:49:01,685 INFO L87 Difference]: Start difference. First operand 1438 states and 1795 transitions. Second operand 6 states. [2019-11-07 02:49:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:03,021 INFO L93 Difference]: Finished difference Result 2852 states and 3614 transitions. [2019-11-07 02:49:03,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 02:49:03,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-11-07 02:49:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:03,064 INFO L225 Difference]: With dead ends: 2852 [2019-11-07 02:49:03,064 INFO L226 Difference]: Without dead ends: 2834 [2019-11-07 02:49:03,067 INFO L630 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 [2019-11-07 02:49:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2019-11-07 02:49:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2834. [2019-11-07 02:49:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2019-11-07 02:49:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3594 transitions. [2019-11-07 02:49:03,230 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3594 transitions. Word has length 98 [2019-11-07 02:49:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:03,232 INFO L462 AbstractCegarLoop]: Abstraction has 2834 states and 3594 transitions. [2019-11-07 02:49:03,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:49:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3594 transitions. [2019-11-07 02:49:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 02:49:03,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:03,252 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:03,252 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1252515599, now seen corresponding path program 1 times [2019-11-07 02:49:03,253 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:03,255 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119891849] [2019-11-07 02:49:03,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-07 02:49:03,458 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119891849] [2019-11-07 02:49:03,458 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:03,458 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:03,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332390235] [2019-11-07 02:49:03,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:03,460 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:03,461 INFO L87 Difference]: Start difference. First operand 2834 states and 3594 transitions. Second operand 3 states. [2019-11-07 02:49:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:03,769 INFO L93 Difference]: Finished difference Result 7034 states and 8901 transitions. [2019-11-07 02:49:03,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:03,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-11-07 02:49:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:03,794 INFO L225 Difference]: With dead ends: 7034 [2019-11-07 02:49:03,794 INFO L226 Difference]: Without dead ends: 4232 [2019-11-07 02:49:03,806 INFO L630 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 [2019-11-07 02:49:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2019-11-07 02:49:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4212. [2019-11-07 02:49:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4212 states. [2019-11-07 02:49:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5326 transitions. [2019-11-07 02:49:04,031 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5326 transitions. Word has length 157 [2019-11-07 02:49:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:04,032 INFO L462 AbstractCegarLoop]: Abstraction has 4212 states and 5326 transitions. [2019-11-07 02:49:04,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5326 transitions. [2019-11-07 02:49:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 02:49:04,047 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:04,048 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:04,048 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:04,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:04,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1374047328, now seen corresponding path program 1 times [2019-11-07 02:49:04,049 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:04,049 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706433619] [2019-11-07 02:49:04,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-11-07 02:49:04,217 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706433619] [2019-11-07 02:49:04,217 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:04,218 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:04,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341273606] [2019-11-07 02:49:04,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:04,219 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:04,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:04,219 INFO L87 Difference]: Start difference. First operand 4212 states and 5326 transitions. Second operand 3 states. [2019-11-07 02:49:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:04,472 INFO L93 Difference]: Finished difference Result 10322 states and 12999 transitions. [2019-11-07 02:49:04,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:04,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-07 02:49:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:04,513 INFO L225 Difference]: With dead ends: 10322 [2019-11-07 02:49:04,513 INFO L226 Difference]: Without dead ends: 6142 [2019-11-07 02:49:04,530 INFO L630 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 [2019-11-07 02:49:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2019-11-07 02:49:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6124. [2019-11-07 02:49:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6124 states. [2019-11-07 02:49:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 7690 transitions. [2019-11-07 02:49:04,919 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 7690 transitions. Word has length 175 [2019-11-07 02:49:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:04,920 INFO L462 AbstractCegarLoop]: Abstraction has 6124 states and 7690 transitions. [2019-11-07 02:49:04,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 7690 transitions. [2019-11-07 02:49:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 02:49:04,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:04,943 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:04,943 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 727239341, now seen corresponding path program 1 times [2019-11-07 02:49:04,944 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:04,945 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021607417] [2019-11-07 02:49:04,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-11-07 02:49:05,160 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021607417] [2019-11-07 02:49:05,161 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:05,162 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:05,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247527903] [2019-11-07 02:49:05,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:05,163 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:05,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:05,164 INFO L87 Difference]: Start difference. First operand 6124 states and 7690 transitions. Second operand 3 states. [2019-11-07 02:49:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:05,584 INFO L93 Difference]: Finished difference Result 15002 states and 18841 transitions. [2019-11-07 02:49:05,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:05,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-07 02:49:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:05,643 INFO L225 Difference]: With dead ends: 15002 [2019-11-07 02:49:05,644 INFO L226 Difference]: Without dead ends: 8918 [2019-11-07 02:49:05,670 INFO L630 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 [2019-11-07 02:49:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2019-11-07 02:49:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 8898. [2019-11-07 02:49:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8898 states. [2019-11-07 02:49:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 11078 transitions. [2019-11-07 02:49:06,360 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 11078 transitions. Word has length 190 [2019-11-07 02:49:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:06,361 INFO L462 AbstractCegarLoop]: Abstraction has 8898 states and 11078 transitions. [2019-11-07 02:49:06,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 11078 transitions. [2019-11-07 02:49:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 02:49:06,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:06,383 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:06,383 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash -693603727, now seen corresponding path program 1 times [2019-11-07 02:49:06,384 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:06,384 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348978000] [2019-11-07 02:49:06,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-11-07 02:49:06,534 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348978000] [2019-11-07 02:49:06,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:06,534 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:06,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178622052] [2019-11-07 02:49:06,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:06,540 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:06,540 INFO L87 Difference]: Start difference. First operand 8898 states and 11078 transitions. Second operand 3 states. [2019-11-07 02:49:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:06,797 INFO L93 Difference]: Finished difference Result 13408 states and 16914 transitions. [2019-11-07 02:49:06,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:06,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-11-07 02:49:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:06,879 INFO L225 Difference]: With dead ends: 13408 [2019-11-07 02:49:06,879 INFO L226 Difference]: Without dead ends: 8938 [2019-11-07 02:49:06,907 INFO L630 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 [2019-11-07 02:49:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8938 states. [2019-11-07 02:49:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8938 to 8918. [2019-11-07 02:49:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8918 states. [2019-11-07 02:49:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 11098 transitions. [2019-11-07 02:49:07,637 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 11098 transitions. Word has length 194 [2019-11-07 02:49:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:07,639 INFO L462 AbstractCegarLoop]: Abstraction has 8918 states and 11098 transitions. [2019-11-07 02:49:07,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 11098 transitions. [2019-11-07 02:49:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 02:49:07,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:07,666 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:07,666 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:07,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1578012143, now seen corresponding path program 1 times [2019-11-07 02:49:07,667 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:07,668 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256867877] [2019-11-07 02:49:07,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2019-11-07 02:49:08,204 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256867877] [2019-11-07 02:49:08,204 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:08,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 02:49:08,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123998772] [2019-11-07 02:49:08,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 02:49:08,206 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 02:49:08,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-07 02:49:08,206 INFO L87 Difference]: Start difference. First operand 8918 states and 11098 transitions. Second operand 9 states.