java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:31:44,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:31:44,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:31:44,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:31:44,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:31:44,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:31:44,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:31:44,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:31:44,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:31:44,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:31:44,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:31:44,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:31:44,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:31:44,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:31:44,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:31:44,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:31:44,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:31:44,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:31:44,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:31:44,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:31:44,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:31:44,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:31:44,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:31:44,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:31:44,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:31:44,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:31:44,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:31:44,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:31:44,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:31:44,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:31:44,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:31:44,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:31:44,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:31:44,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:31:44,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:31:44,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:31:44,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:31:44,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:31:44,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:31:44,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:31:44,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:31:44,351 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 18:31:44,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:31:44,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:31:44,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:31:44,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:31:44,370 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:31:44,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:31:44,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:31:44,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:31:44,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:31:44,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:31:44,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:31:44,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:31:44,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:31:44,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:31:44,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:31:44,372 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:31:44,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:31:44,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:31:44,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:31:44,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:31:44,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:31:44,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:31:44,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:31:44,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:31:44,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:31:44,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:31:44,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:31:44,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:31:44,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:31:44,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:31:44,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:31:44,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:31:44,667 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:31:44,667 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:31:44,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 18:31:44,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cdad6cc1/5b1b961b746c411e877a1371177a4e2c/FLAG782bf084b [2019-10-13 18:31:45,563 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:31:45,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 18:31:45,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cdad6cc1/5b1b961b746c411e877a1371177a4e2c/FLAG782bf084b [2019-10-13 18:31:46,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cdad6cc1/5b1b961b746c411e877a1371177a4e2c [2019-10-13 18:31:46,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:31:46,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:31:46,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:31:46,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:31:46,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:31:46,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:31:46" (1/1) ... [2019-10-13 18:31:46,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195c7a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:46, skipping insertion in model container [2019-10-13 18:31:46,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:31:46" (1/1) ... [2019-10-13 18:31:46,128 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:31:46,284 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:31:48,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:31:48,335 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:31:48,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:31:48,890 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:31:48,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48 WrapperNode [2019-10-13 18:31:48,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:31:48,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:31:48,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:31:48,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:31:48,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:48,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:48,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:48,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:49,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:49,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:49,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (1/1) ... [2019-10-13 18:31:49,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:31:49,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:31:49,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:31:49,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:31:49,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (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 18:31:49,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:31:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:31:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 18:31:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 18:31:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 18:31:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 18:31:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 18:31:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 18:31:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2019-10-13 18:31:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 18:31:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2019-10-13 18:31:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-13 18:31:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2019-10-13 18:31:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2019-10-13 18:31:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-13 18:31:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 18:31:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 18:31:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 18:31:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 18:31:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 18:31:49,236 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-10-13 18:31:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 18:31:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 18:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 18:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 18:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 18:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 18:31:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-10-13 18:31:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_open [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2019-10-13 18:31:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_read [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_write [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_receive [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_wakeup [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_init [2019-10-13 18:31:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_ioctl [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_process [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_encode [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_send [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_flush_output [2019-10-13 18:31:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_ordinary [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure process_input_packet [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_input [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_cleanup [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:31:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 18:31:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 18:31:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 18:31:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 18:31:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 18:31:49,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_15 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-13 18:31:49,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 18:31:49,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 18:31:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 18:31:49,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-10-13 18:31:49,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-13 18:31:49,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 18:31:49,252 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure start_tty [2019-10-13 18:31:49,253 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_tty [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 18:31:49,254 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-10-13 18:31:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2019-10-13 18:31:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 18:31:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 18:31:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 18:31:49,255 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 18:31:49,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 18:31:49,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2019-10-13 18:31:49,257 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 18:31:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 18:31:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 18:31:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 18:31:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-13 18:31:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 18:31:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_15 [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-10-13 18:31:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-10-13 18:31:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-13 18:31:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 18:31:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 18:31:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 18:31:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2019-10-13 18:31:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure down [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure up [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure stop_tty [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure start_tty [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-13 18:31:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-13 18:31:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-10-13 18:31:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_encode [2019-10-13 18:31:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_send [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_flush_output [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_input [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_ioctl [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_process [2019-10-13 18:31:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_open [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_read [2019-10-13 18:31:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_write [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_receive [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_wakeup [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_init [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 18:31:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure scan_ordinary [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure process_input_packet [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_cleanup [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 18:31:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 18:31:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:31:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 18:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 18:31:50,626 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 18:31:54,556 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:31:54,556 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 18:31:54,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:31:54 BoogieIcfgContainer [2019-10-13 18:31:54,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:31:54,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:31:54,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:31:54,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:31:54,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:31:46" (1/3) ... [2019-10-13 18:31:54,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253c394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:31:54, skipping insertion in model container [2019-10-13 18:31:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:31:48" (2/3) ... [2019-10-13 18:31:54,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253c394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:31:54, skipping insertion in model container [2019-10-13 18:31:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:31:54" (3/3) ... [2019-10-13 18:31:54,569 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 18:31:54,578 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:31:54,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:31:54,601 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:31:54,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:31:54,644 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:31:54,644 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:31:54,644 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:31:54,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:31:54,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:31:54,645 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:31:54,645 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:31:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states. [2019-10-13 18:31:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 18:31:54,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:31:54,735 INFO L380 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, 1, 1, 1] [2019-10-13 18:31:54,738 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:31:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:31:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1820998869, now seen corresponding path program 1 times [2019-10-13 18:31:54,756 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:31:54,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135395787] [2019-10-13 18:31:54,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:31:54,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:31:54,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:31:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,681 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-13 18:31:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:31:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 18:31:55,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135395787] [2019-10-13 18:31:55,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:31:55,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 18:31:55,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913973551] [2019-10-13 18:31:55,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 18:31:55,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:31:55,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 18:31:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:31:55,986 INFO L87 Difference]: Start difference. First operand 1100 states. Second operand 6 states. [2019-10-13 18:31:56,238 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-13 18:31:57,295 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-10-13 18:32:05,953 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-13 18:32:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:32:15,043 INFO L93 Difference]: Finished difference Result 3873 states and 5460 transitions. [2019-10-13 18:32:15,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:32:15,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-13 18:32:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:32:15,094 INFO L225 Difference]: With dead ends: 3873 [2019-10-13 18:32:15,094 INFO L226 Difference]: Without dead ends: 2827 [2019-10-13 18:32:15,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:32:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2019-10-13 18:32:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1986. [2019-10-13 18:32:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1986 states. [2019-10-13 18:32:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2590 transitions. [2019-10-13 18:32:15,610 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2590 transitions. Word has length 101 [2019-10-13 18:32:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:32:15,612 INFO L462 AbstractCegarLoop]: Abstraction has 1986 states and 2590 transitions. [2019-10-13 18:32:15,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 18:32:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2590 transitions. [2019-10-13 18:32:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 18:32:15,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:32:15,622 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:32:15,622 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:32:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:32:15,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1355814239, now seen corresponding path program 1 times [2019-10-13 18:32:15,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:32:15,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047640610] [2019-10-13 18:32:15,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:15,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:32:15,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:32:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,056 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-13 18:32:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:32:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 18:32:16,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047640610] [2019-10-13 18:32:16,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:32:16,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 18:32:16,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719641093] [2019-10-13 18:32:16,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:32:16,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:32:16,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:32:16,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:32:16,249 INFO L87 Difference]: Start difference. First operand 1986 states and 2590 transitions. Second operand 9 states. [2019-10-13 18:32:16,453 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-13 18:32:16,780 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-10-13 18:32:17,115 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-13 18:32:20,382 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 156 [2019-10-13 18:32:20,691 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2019-10-13 18:32:20,950 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 156