/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_async.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:48:35,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:48:35,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:48:35,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:48:35,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:48:35,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:48:35,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:48:35,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:48:35,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:48:35,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:48:35,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:48:35,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:48:35,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:48:35,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:48:35,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:48:35,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:48:35,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:48:35,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:48:35,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:48:35,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:48:35,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:48:35,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:48:35,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:48:35,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:48:35,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:48:35,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:48:35,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:48:35,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:48:35,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:48:35,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:48:35,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:48:35,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:48:35,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:48:35,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:48:35,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:48:35,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:48:35,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:48:35,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:48:35,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:48:35,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:48:35,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:48:35,233 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 02:48:35,254 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:48:35,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:48:35,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:48:35,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:48:35,258 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:48:35,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:48:35,259 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:48:35,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:48:35,261 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:48:35,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:48:35,261 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:48:35,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:48:35,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:48:35,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:48:35,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:48:35,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:48:35,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:48:35,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:48:35,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:48:35,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:48:35,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:48:35,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:48:35,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:48:35,265 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 02:48:35,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:48:35,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:48:35,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:48:35,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:48:35,578 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:48:35,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-11-07 02:48:35,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce458e13/14ce447946cc437fbf9e6616995c56b5/FLAGad1e5f802 [2019-11-07 02:48:36,409 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:48:36,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-11-07 02:48:36,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce458e13/14ce447946cc437fbf9e6616995c56b5/FLAGad1e5f802 [2019-11-07 02:48:36,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce458e13/14ce447946cc437fbf9e6616995c56b5 [2019-11-07 02:48:36,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:48:36,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:48:36,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:48:36,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:48:36,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:48:36,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:36" (1/1) ... [2019-11-07 02:48:36,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1e6d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:36, skipping insertion in model container [2019-11-07 02:48:36,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:36" (1/1) ... [2019-11-07 02:48:36,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:48:36,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:48:38,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:48:38,626 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:48:38,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:48:39,174 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:48:39,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39 WrapperNode [2019-11-07 02:48:39,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:48:39,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:48:39,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:48:39,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:48:39,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (1/1) ... [2019-11-07 02:48:39,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:48:39,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:48:39,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:48:39,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:48:39,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (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 02:48:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:48:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:48:39,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:48:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-07 02:48:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 02:48:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 02:48:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-07 02:48:39,537 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2019-11-07 02:48:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2019-11-07 02:48:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-11-07 02:48:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-07 02:48:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-07 02:48:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-07 02:48:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 02:48:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-11-07 02:48:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-11-07 02:48:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-11-07 02:48:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-11-07 02:48:39,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 02:48:39,541 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-11-07 02:48:39,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 02:48:39,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-11-07 02:48:39,544 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_open [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2019-11-07 02:48:39,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_read [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_write [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_receive [2019-11-07 02:48:39,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_wakeup [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_init [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_ioctl [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_process [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_encode [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_send [2019-11-07 02:48:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_flush_output [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_ordinary [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure process_input_packet [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_input [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_cleanup [2019-11-07 02:48:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-07 02:48:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_15 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-11-07 02:48:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-07 02:48:39,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:48:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-11-07 02:48:39,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-11-07 02:48:39,554 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-11-07 02:48:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-11-07 02:48:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:48:39,557 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-11-07 02:48:39,558 INFO L138 BoogieDeclarations]: Found implementation of procedure start_tty [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_tty [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-11-07 02:48:39,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 02:48:39,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-07 02:48:39,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2019-11-07 02:48:39,562 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-07 02:48:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-11-07 02:48:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-11-07 02:48:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:48:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 02:48:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-11-07 02:48:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_15 [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:48:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-07 02:48:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-07 02:48:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:48:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 02:48:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure down [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure up [2019-11-07 02:48:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure stop_tty [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure start_tty [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-11-07 02:48:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2019-11-07 02:48:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-11-07 02:48:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_encode [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_send [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_flush_output [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_input [2019-11-07 02:48:39,578 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_ioctl [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_process [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_open [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2019-11-07 02:48:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_read [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_write [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_receive [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_wakeup [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_init [2019-11-07 02:48:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure scan_ordinary [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure process_input_packet [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_cleanup [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:48:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:48:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:48:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 02:48:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 02:48:40,688 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 02:48:49,599 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:48:49,599 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 02:48:49,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:49 BoogieIcfgContainer [2019-11-07 02:48:49,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:48:49,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:48:49,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:48:49,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:48:49,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:48:36" (1/3) ... [2019-11-07 02:48:49,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a59cb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:49, skipping insertion in model container [2019-11-07 02:48:49,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:39" (2/3) ... [2019-11-07 02:48:49,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a59cb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:49, skipping insertion in model container [2019-11-07 02:48:49,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:49" (3/3) ... [2019-11-07 02:48:49,609 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 [2019-11-07 02:48:49,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:48:49,628 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:48:49,640 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:48:49,674 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:48:49,674 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:48:49,674 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:48:49,674 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:48:49,674 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:48:49,675 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:48:49,675 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:48:49,675 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:48:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states. [2019-11-07 02:48:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 02:48:49,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:49,727 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 02:48:49,729 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 469378667, now seen corresponding path program 1 times [2019-11-07 02:48:49,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:49,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338151558] [2019-11-07 02:48:49,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:50,310 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 02:48:50,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338151558] [2019-11-07 02:48:50,312 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:50,312 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:48:50,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629352503] [2019-11-07 02:48:50,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:48:50,319 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:50,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:48:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:48:50,337 INFO L87 Difference]: Start difference. First operand 870 states. Second operand 3 states. [2019-11-07 02:48:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:50,614 INFO L93 Difference]: Finished difference Result 2377 states and 3088 transitions. [2019-11-07 02:48:50,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:48:50,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-11-07 02:48:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:50,649 INFO L225 Difference]: With dead ends: 2377 [2019-11-07 02:48:50,650 INFO L226 Difference]: Without dead ends: 1564 [2019-11-07 02:48:50,660 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 02:48:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2019-11-07 02:48:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2019-11-07 02:48:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2019-11-07 02:48:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1985 transitions. [2019-11-07 02:48:50,868 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1985 transitions. Word has length 95 [2019-11-07 02:48:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:50,869 INFO L462 AbstractCegarLoop]: Abstraction has 1564 states and 1985 transitions. [2019-11-07 02:48:50,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:48:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1985 transitions. [2019-11-07 02:48:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 02:48:50,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:50,877 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 02:48:50,877 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:50,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -827239716, now seen corresponding path program 1 times [2019-11-07 02:48:50,878 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:50,878 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114997628] [2019-11-07 02:48:50,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:51,152 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 02:48:51,152 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114997628] [2019-11-07 02:48:51,153 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:51,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:48:51,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143853617] [2019-11-07 02:48:51,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:48:51,155 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:51,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:48:51,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:48:51,156 INFO L87 Difference]: Start difference. First operand 1564 states and 1985 transitions. Second operand 6 states. [2019-11-07 02:48:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:52,413 INFO L93 Difference]: Finished difference Result 3104 states and 3986 transitions. [2019-11-07 02:48:52,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 02:48:52,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-11-07 02:48:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:52,448 INFO L225 Difference]: With dead ends: 3104 [2019-11-07 02:48:52,448 INFO L226 Difference]: Without dead ends: 3086 [2019-11-07 02:48:52,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 02:48:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2019-11-07 02:48:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3086. [2019-11-07 02:48:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3086 states. [2019-11-07 02:48:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3966 transitions. [2019-11-07 02:48:52,629 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3966 transitions. Word has length 98 [2019-11-07 02:48:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:52,630 INFO L462 AbstractCegarLoop]: Abstraction has 3086 states and 3966 transitions. [2019-11-07 02:48:52,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:48:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3966 transitions. [2019-11-07 02:48:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 02:48:52,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:52,653 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:52,653 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:52,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1976508298, now seen corresponding path program 1 times [2019-11-07 02:48:52,654 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:52,654 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869632242] [2019-11-07 02:48:52,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2019-11-07 02:48:52,866 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869632242] [2019-11-07 02:48:52,866 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:52,866 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:48:52,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687863444] [2019-11-07 02:48:52,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:48:52,867 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:52,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:48:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:48:52,868 INFO L87 Difference]: Start difference. First operand 3086 states and 3966 transitions. Second operand 3 states. [2019-11-07 02:48:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:53,075 INFO L93 Difference]: Finished difference Result 7430 states and 9557 transitions. [2019-11-07 02:48:53,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:48:53,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 02:48:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:53,211 INFO L225 Difference]: With dead ends: 7430 [2019-11-07 02:48:53,211 INFO L226 Difference]: Without dead ends: 4376 [2019-11-07 02:48:53,223 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 02:48:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2019-11-07 02:48:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4356. [2019-11-07 02:48:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4356 states. [2019-11-07 02:48:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5610 transitions. [2019-11-07 02:48:53,413 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5610 transitions. Word has length 174 [2019-11-07 02:48:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:53,413 INFO L462 AbstractCegarLoop]: Abstraction has 4356 states and 5610 transitions. [2019-11-07 02:48:53,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:48:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5610 transitions. [2019-11-07 02:48:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 02:48:53,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:53,424 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:53,425 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash -276466131, now seen corresponding path program 1 times [2019-11-07 02:48:53,425 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:53,425 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910987922] [2019-11-07 02:48:53,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2019-11-07 02:48:53,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910987922] [2019-11-07 02:48:53,578 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:53,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:48:53,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119848985] [2019-11-07 02:48:53,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:48:53,581 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:48:53,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:48:53,582 INFO L87 Difference]: Start difference. First operand 4356 states and 5610 transitions. Second operand 3 states. [2019-11-07 02:48:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:53,826 INFO L93 Difference]: Finished difference Result 11026 states and 14117 transitions. [2019-11-07 02:48:53,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:48:53,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 02:48:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:53,870 INFO L225 Difference]: With dead ends: 11026 [2019-11-07 02:48:53,870 INFO L226 Difference]: Without dead ends: 6702 [2019-11-07 02:48:53,885 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 02:48:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2019-11-07 02:48:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6684. [2019-11-07 02:48:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6684 states. [2019-11-07 02:48:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 8524 transitions. [2019-11-07 02:48:54,291 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 8524 transitions. Word has length 193 [2019-11-07 02:48:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:54,291 INFO L462 AbstractCegarLoop]: Abstraction has 6684 states and 8524 transitions. [2019-11-07 02:48:54,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:48:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 8524 transitions. [2019-11-07 02:48:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 02:48:54,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:54,309 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:54,309 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash 783819149, now seen corresponding path program 1 times [2019-11-07 02:48:54,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:54,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577072589] [2019-11-07 02:48:54,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-11-07 02:48:54,469 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577072589] [2019-11-07 02:48:54,469 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:54,470 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:48:54,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045356533] [2019-11-07 02:48:54,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:48:54,472 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:48:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:48:54,473 INFO L87 Difference]: Start difference. First operand 6684 states and 8524 transitions. Second operand 3 states. [2019-11-07 02:48:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:54,815 INFO L93 Difference]: Finished difference Result 16054 states and 20481 transitions. [2019-11-07 02:48:54,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:48:54,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-11-07 02:48:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:54,873 INFO L225 Difference]: With dead ends: 16054 [2019-11-07 02:48:54,874 INFO L226 Difference]: Without dead ends: 9410 [2019-11-07 02:48:54,897 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 02:48:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2019-11-07 02:48:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 9390. [2019-11-07 02:48:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9390 states. [2019-11-07 02:48:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9390 states to 9390 states and 11884 transitions. [2019-11-07 02:48:55,489 INFO L78 Accepts]: Start accepts. Automaton has 9390 states and 11884 transitions. Word has length 207 [2019-11-07 02:48:55,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:55,490 INFO L462 AbstractCegarLoop]: Abstraction has 9390 states and 11884 transitions. [2019-11-07 02:48:55,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:48:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 9390 states and 11884 transitions. [2019-11-07 02:48:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-11-07 02:48:55,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:55,511 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:55,511 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:55,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:55,511 INFO L82 PathProgramCache]: Analyzing trace with hash 564113598, now seen corresponding path program 1 times [2019-11-07 02:48:55,512 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:55,512 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026048724] [2019-11-07 02:48:55,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2019-11-07 02:48:55,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026048724] [2019-11-07 02:48:55,648 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:48:55,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:48:55,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962149726] [2019-11-07 02:48:55,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:48:55,650 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:48:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:48:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:48:55,650 INFO L87 Difference]: Start difference. First operand 9390 states and 11884 transitions. Second operand 3 states. [2019-11-07 02:48:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:48:55,871 INFO L93 Difference]: Finished difference Result 14150 states and 18122 transitions. [2019-11-07 02:48:55,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:48:55,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-11-07 02:48:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:48:55,921 INFO L225 Difference]: With dead ends: 14150 [2019-11-07 02:48:55,922 INFO L226 Difference]: Without dead ends: 9430 [2019-11-07 02:48:55,941 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 02:48:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9430 states. [2019-11-07 02:48:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9430 to 9410. [2019-11-07 02:48:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9410 states. [2019-11-07 02:48:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11904 transitions. [2019-11-07 02:48:56,433 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11904 transitions. Word has length 226 [2019-11-07 02:48:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:48:56,436 INFO L462 AbstractCegarLoop]: Abstraction has 9410 states and 11904 transitions. [2019-11-07 02:48:56,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:48:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11904 transitions. [2019-11-07 02:48:56,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 02:48:56,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:48:56,457 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:48:56,457 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:48:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:48:56,457 INFO L82 PathProgramCache]: Analyzing trace with hash 386681372, now seen corresponding path program 1 times [2019-11-07 02:48:56,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:48:56,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085667386] [2019-11-07 02:48:56,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:48:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2019-11-07 02:48:56,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085667386] [2019-11-07 02:48:56,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759425283] [2019-11-07 02:48:56,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:48:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:48:57,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 02:48:57,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:48:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-11-07 02:48:57,541 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:48:58,069 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-11-07 02:48:59,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:48:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-11-07 02:48:59,987 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682485910] [2019-11-07 02:49:00,037 INFO L159 IcfgInterpreter]: Started Sifa with 152 locations of interest [2019-11-07 02:49:00,038 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:49:00,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:49:00,054 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:49:00,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 02:49:01,237 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 434 [2019-11-07 02:49:01,964 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-11-07 02:49:02,987 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 419 [2019-11-07 02:49:03,356 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-11-07 02:49:03,658 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-11-07 02:49:03,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 148 for LOIs [2019-11-07 02:49:03,680 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 499 for LOIs [2019-11-07 02:49:04,071 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 505 [2019-11-07 02:49:04,185 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 505 [2019-11-07 02:49:04,384 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 02:49:04,505 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 505 [2019-11-07 02:49:04,617 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 505 [2019-11-07 02:49:04,789 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-11-07 02:49:06,038 WARN L191 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-11-07 02:49:06,229 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 624 [2019-11-07 02:49:06,475 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 593 [2019-11-07 02:49:06,864 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 545 [2019-11-07 02:49:08,089 WARN L191 SmtUtils]: Spent 894.00 ms on a formula simplification that was a NOOP. DAG size: 365