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 0.1.24-13a467a-m [2019-10-15 02:21:29,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:21:29,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:21:29,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:21:29,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:21:29,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:21:29,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:21:29,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:21:29,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:21:29,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:21:29,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:21:29,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:21:29,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:21:29,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:21:29,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:21:29,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:21:29,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:21:29,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:21:29,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:21:29,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:21:29,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:21:29,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:21:29,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:21:29,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:21:29,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:21:29,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:21:29,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:21:29,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:21:29,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:21:29,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:21:29,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:21:29,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:21:29,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:21:29,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:21:29,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:21:29,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:21:29,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:21:29,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:21:29,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:21:29,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:21:29,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:21:29,870 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 [2019-10-15 02:21:29,888 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:21:29,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:21:29,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:21:29,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:21:29,890 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:21:29,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:21:29,890 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:21:29,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:21:29,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:21:29,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:21:29,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:21:29,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:21:29,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:21:29,892 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:21:29,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:21:29,892 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:21:29,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:21:29,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:21:29,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:21:29,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:21:29,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:21:29,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:21:29,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:21:29,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:21:29,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:21:29,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:21:29,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:21:29,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:21:29,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:21:30,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:21:30,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:21:30,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:21:30,203 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:21:30,204 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:21:30,204 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-15 02:21:30,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f490b878a/6b0919b7f7e74c478e536b658a76dcf1/FLAG4198be2d2 [2019-10-15 02:21:31,187 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:21:31,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-15 02:21:31,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f490b878a/6b0919b7f7e74c478e536b658a76dcf1/FLAG4198be2d2 [2019-10-15 02:21:31,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f490b878a/6b0919b7f7e74c478e536b658a76dcf1 [2019-10-15 02:21:31,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:21:31,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:21:31,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:21:31,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:21:31,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:21:31,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:21:31" (1/1) ... [2019-10-15 02:21:31,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a1f498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:31, skipping insertion in model container [2019-10-15 02:21:31,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:21:31" (1/1) ... [2019-10-15 02:21:31,720 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:21:31,835 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:21:33,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:21:33,919 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:21:34,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:21:34,523 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:21:34,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34 WrapperNode [2019-10-15 02:21:34,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:21:34,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:21:34,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:21:34,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:21:34,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (1/1) ... [2019-10-15 02:21:34,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:21:34,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:21:34,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:21:34,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:21:34,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (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 [2019-10-15 02:21:34,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:21:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:21:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 02:21:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-15 02:21:34,934 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-15 02:21:34,936 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 02:21:34,937 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-15 02:21:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-15 02:21:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2019-10-15 02:21:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-15 02:21:34,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2019-10-15 02:21:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-15 02:21:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2019-10-15 02:21:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2019-10-15 02:21:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-15 02:21:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-15 02:21:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-15 02:21:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-15 02:21:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:21:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-10-15 02:21:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:21:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2019-10-15 02:21:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2019-10-15 02:21:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_open [2019-10-15 02:21:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2019-10-15 02:21:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2019-10-15 02:21:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_read [2019-10-15 02:21:34,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_write [2019-10-15 02:21:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2019-10-15 02:21:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2019-10-15 02:21:34,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_receive [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_wakeup [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_init [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_ioctl [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_process [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_encode [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_send [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2019-10-15 02:21:34,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_flush_output [2019-10-15 02:21:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_ordinary [2019-10-15 02:21:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure process_input_packet [2019-10-15 02:21:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_input [2019-10-15 02:21:34,952 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2019-10-15 02:21:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_cleanup [2019-10-15 02:21:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-15 02:21:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-15 02:21:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:21:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-15 02:21:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-15 02:21:34,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-15 02:21:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-15 02:21:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-15 02:21:34,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-10-15 02:21:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-15 02:21:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-10-15 02:21:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_15 [2019-10-15 02:21:34,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-10-15 02:21:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-15 02:21:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2019-10-15 02:21:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-15 02:21:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 02:21:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:21:34,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-15 02:21:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-10-15 02:21:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-10-15 02:21:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-15 02:21:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-15 02:21:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-15 02:21:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-15 02:21:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-15 02:21:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:21:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-10-15 02:21:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-10-15 02:21:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2019-10-15 02:21:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-10-15 02:21:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 02:21:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-10-15 02:21:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-15 02:21:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-10-15 02:21:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-10-15 02:21:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-10-15 02:21:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-10-15 02:21:34,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-10-15 02:21:34,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-15 02:21:34,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:21:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 02:21:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-15 02:21:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-15 02:21:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-10-15 02:21:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-10-15 02:21:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-15 02:21:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure start_tty [2019-10-15 02:21:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_tty [2019-10-15 02:21:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-15 02:21:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-15 02:21:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-15 02:21:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-15 02:21:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-15 02:21:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-15 02:21:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-10-15 02:21:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2019-10-15 02:21:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:21:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:21:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:21:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-15 02:21:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2019-10-15 02:21:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-15 02:21:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-10-15 02:21:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 02:21:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-10-15 02:21:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-15 02:21:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-15 02:21:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-15 02:21:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-15 02:21:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-15 02:21:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-15 02:21:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-10-15 02:21:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-15 02:21:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-10-15 02:21:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-15 02:21:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_15 [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:21:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-15 02:21:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:21:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:21:34,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:21:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure down [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure up [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure stop_tty [2019-10-15 02:21:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure start_tty [2019-10-15 02:21:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-10-15 02:21:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-15 02:21:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-15 02:21:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-15 02:21:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-15 02:21:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-15 02:21:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2019-10-15 02:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-10-15 02:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-10-15 02:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_encode [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_send [2019-10-15 02:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_flush_output [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_input [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_ioctl [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_process [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2019-10-15 02:21:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_open [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_read [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_write [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_receive [2019-10-15 02:21:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_wakeup [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_init [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure scan_ordinary [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure process_input_packet [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_cleanup [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:21:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:21:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:21:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:21:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:21:36,326 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:21:45,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:21:45,169 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:21:45,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:21:45 BoogieIcfgContainer [2019-10-15 02:21:45,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:21:45,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:21:45,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:21:45,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:21:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:21:31" (1/3) ... [2019-10-15 02:21:45,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77039174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:21:45, skipping insertion in model container [2019-10-15 02:21:45,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:34" (2/3) ... [2019-10-15 02:21:45,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77039174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:21:45, skipping insertion in model container [2019-10-15 02:21:45,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:21:45" (3/3) ... [2019-10-15 02:21:45,179 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 [2019-10-15 02:21:45,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:21:45,195 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:21:45,204 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:21:45,242 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:21:45,242 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:21:45,243 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:21:45,243 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:21:45,243 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:21:45,243 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:21:45,243 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:21:45,243 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:21:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states. [2019-10-15 02:21:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 02:21:45,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:45,300 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] [2019-10-15 02:21:45,302 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:45,307 INFO L82 PathProgramCache]: Analyzing trace with hash 469378667, now seen corresponding path program 1 times [2019-10-15 02:21:45,316 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:45,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127928016] [2019-10-15 02:21:45,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:45,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:45,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-15 02:21:45,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127928016] [2019-10-15 02:21:45,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:45,964 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:45,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636465638] [2019-10-15 02:21:45,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:45,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:45,986 INFO L87 Difference]: Start difference. First operand 870 states. Second operand 3 states. [2019-10-15 02:21:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:46,239 INFO L93 Difference]: Finished difference Result 2377 states and 3088 transitions. [2019-10-15 02:21:46,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:46,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-10-15 02:21:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:46,279 INFO L225 Difference]: With dead ends: 2377 [2019-10-15 02:21:46,279 INFO L226 Difference]: Without dead ends: 1564 [2019-10-15 02:21:46,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2019-10-15 02:21:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2019-10-15 02:21:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2019-10-15 02:21:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1985 transitions. [2019-10-15 02:21:46,530 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1985 transitions. Word has length 95 [2019-10-15 02:21:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:46,531 INFO L462 AbstractCegarLoop]: Abstraction has 1564 states and 1985 transitions. [2019-10-15 02:21:46,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1985 transitions. [2019-10-15 02:21:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 02:21:46,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:46,539 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] [2019-10-15 02:21:46,539 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:46,540 INFO L82 PathProgramCache]: Analyzing trace with hash -827239716, now seen corresponding path program 1 times [2019-10-15 02:21:46,540 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:46,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323167636] [2019-10-15 02:21:46,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:46,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:46,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-15 02:21:46,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323167636] [2019-10-15 02:21:46,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:46,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:21:46,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383781094] [2019-10-15 02:21:46,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:21:46,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:21:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:21:46,901 INFO L87 Difference]: Start difference. First operand 1564 states and 1985 transitions. Second operand 6 states. [2019-10-15 02:21:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:48,098 INFO L93 Difference]: Finished difference Result 3104 states and 3986 transitions. [2019-10-15 02:21:48,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 02:21:48,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-15 02:21:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:48,125 INFO L225 Difference]: With dead ends: 3104 [2019-10-15 02:21:48,126 INFO L226 Difference]: Without dead ends: 3086 [2019-10-15 02:21:48,129 INFO L600 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 [2019-10-15 02:21:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2019-10-15 02:21:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3086. [2019-10-15 02:21:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3086 states. [2019-10-15 02:21:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3966 transitions. [2019-10-15 02:21:48,360 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3966 transitions. Word has length 98 [2019-10-15 02:21:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:48,361 INFO L462 AbstractCegarLoop]: Abstraction has 3086 states and 3966 transitions. [2019-10-15 02:21:48,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:21:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3966 transitions. [2019-10-15 02:21:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 02:21:48,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:48,376 INFO L380 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] [2019-10-15 02:21:48,376 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1976508298, now seen corresponding path program 1 times [2019-10-15 02:21:48,377 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:48,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672719974] [2019-10-15 02:21:48,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:48,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:48,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2019-10-15 02:21:48,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672719974] [2019-10-15 02:21:48,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:48,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:48,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522771435] [2019-10-15 02:21:48,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:48,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:48,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:48,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:48,590 INFO L87 Difference]: Start difference. First operand 3086 states and 3966 transitions. Second operand 3 states. [2019-10-15 02:21:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:48,837 INFO L93 Difference]: Finished difference Result 7430 states and 9557 transitions. [2019-10-15 02:21:48,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:48,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-15 02:21:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:48,872 INFO L225 Difference]: With dead ends: 7430 [2019-10-15 02:21:48,873 INFO L226 Difference]: Without dead ends: 4376 [2019-10-15 02:21:48,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2019-10-15 02:21:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4356. [2019-10-15 02:21:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4356 states. [2019-10-15 02:21:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5610 transitions. [2019-10-15 02:21:49,086 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5610 transitions. Word has length 174 [2019-10-15 02:21:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:49,087 INFO L462 AbstractCegarLoop]: Abstraction has 4356 states and 5610 transitions. [2019-10-15 02:21:49,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:49,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5610 transitions. [2019-10-15 02:21:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 02:21:49,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:49,099 INFO L380 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] [2019-10-15 02:21:49,100 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:49,100 INFO L82 PathProgramCache]: Analyzing trace with hash -276466131, now seen corresponding path program 1 times [2019-10-15 02:21:49,100 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:49,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605200609] [2019-10-15 02:21:49,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2019-10-15 02:21:49,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605200609] [2019-10-15 02:21:49,239 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:49,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:49,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526781107] [2019-10-15 02:21:49,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:49,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:49,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:49,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:49,241 INFO L87 Difference]: Start difference. First operand 4356 states and 5610 transitions. Second operand 3 states. [2019-10-15 02:21:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:49,605 INFO L93 Difference]: Finished difference Result 11026 states and 14117 transitions. [2019-10-15 02:21:49,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:49,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-15 02:21:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:49,657 INFO L225 Difference]: With dead ends: 11026 [2019-10-15 02:21:49,657 INFO L226 Difference]: Without dead ends: 6702 [2019-10-15 02:21:49,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2019-10-15 02:21:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6684. [2019-10-15 02:21:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6684 states. [2019-10-15 02:21:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 8524 transitions. [2019-10-15 02:21:50,009 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 8524 transitions. Word has length 193 [2019-10-15 02:21:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:50,010 INFO L462 AbstractCegarLoop]: Abstraction has 6684 states and 8524 transitions. [2019-10-15 02:21:50,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 8524 transitions. [2019-10-15 02:21:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-15 02:21:50,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:50,031 INFO L380 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] [2019-10-15 02:21:50,032 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 783819149, now seen corresponding path program 1 times [2019-10-15 02:21:50,033 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:50,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960364810] [2019-10-15 02:21:50,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:50,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:50,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-10-15 02:21:50,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960364810] [2019-10-15 02:21:50,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:50,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:50,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398908619] [2019-10-15 02:21:50,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:50,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:50,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:50,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:50,186 INFO L87 Difference]: Start difference. First operand 6684 states and 8524 transitions. Second operand 3 states. [2019-10-15 02:21:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:50,573 INFO L93 Difference]: Finished difference Result 16054 states and 20481 transitions. [2019-10-15 02:21:50,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:50,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-10-15 02:21:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:50,654 INFO L225 Difference]: With dead ends: 16054 [2019-10-15 02:21:50,654 INFO L226 Difference]: Without dead ends: 9410 [2019-10-15 02:21:50,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2019-10-15 02:21:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 9390. [2019-10-15 02:21:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9390 states. [2019-10-15 02:21:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9390 states to 9390 states and 11884 transitions. [2019-10-15 02:21:51,375 INFO L78 Accepts]: Start accepts. Automaton has 9390 states and 11884 transitions. Word has length 207 [2019-10-15 02:21:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:51,379 INFO L462 AbstractCegarLoop]: Abstraction has 9390 states and 11884 transitions. [2019-10-15 02:21:51,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9390 states and 11884 transitions. [2019-10-15 02:21:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-15 02:21:51,410 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:51,410 INFO L380 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] [2019-10-15 02:21:51,411 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash 564113598, now seen corresponding path program 1 times [2019-10-15 02:21:51,412 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:51,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850447664] [2019-10-15 02:21:51,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,413 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2019-10-15 02:21:51,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850447664] [2019-10-15 02:21:51,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:51,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:51,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155149201] [2019-10-15 02:21:51,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:51,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:51,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:51,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:51,638 INFO L87 Difference]: Start difference. First operand 9390 states and 11884 transitions. Second operand 3 states. [2019-10-15 02:21:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:51,872 INFO L93 Difference]: Finished difference Result 14150 states and 18122 transitions. [2019-10-15 02:21:51,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:51,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-10-15 02:21:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:51,936 INFO L225 Difference]: With dead ends: 14150 [2019-10-15 02:21:51,936 INFO L226 Difference]: Without dead ends: 9430 [2019-10-15 02:21:51,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9430 states. [2019-10-15 02:21:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9430 to 9410. [2019-10-15 02:21:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9410 states. [2019-10-15 02:21:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11904 transitions. [2019-10-15 02:21:52,528 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11904 transitions. Word has length 226 [2019-10-15 02:21:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:52,529 INFO L462 AbstractCegarLoop]: Abstraction has 9410 states and 11904 transitions. [2019-10-15 02:21:52,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11904 transitions. [2019-10-15 02:21:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-15 02:21:52,560 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:52,560 INFO L380 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] [2019-10-15 02:21:52,560 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash 386681372, now seen corresponding path program 1 times [2019-10-15 02:21:52,561 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:52,561 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881523359] [2019-10-15 02:21:52,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:52,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:52,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2019-10-15 02:21:53,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881523359] [2019-10-15 02:21:53,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043335009] [2019-10-15 02:21:53,075 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 [2019-10-15 02:21:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:53,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 02:21:53,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-10-15 02:21:53,805 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:54,239 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-10-15 02:21:55,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:21:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-15 02:21:56,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295761771] [2019-10-15 02:21:56,854 INFO L162 IcfgInterpreter]: Started Sifa with 152 locations of interest [2019-10-15 02:21:56,854 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:21:56,865 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:21:56,877 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:21:56,878 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:21:58,512 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 434 [2019-10-15 02:21:59,924 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-15 02:22:00,142 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 420 [2019-10-15 02:22:00,309 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 419 [2019-10-15 02:22:00,512 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 419 [2019-10-15 02:22:00,742 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-15 02:22:00,945 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-15 02:22:01,101 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-15 02:22:01,352 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-15 02:22:01,778 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 481 [2019-10-15 02:22:01,952 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-15 02:22:02,131 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 481