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-f4eb214f-m [2019-10-13 22:19:00,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:19:00,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:19:00,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:19:00,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:19:00,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:19:00,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:19:00,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:19:00,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:19:00,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:19:00,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:19:00,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:19:00,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:19:00,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:19:00,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:19:00,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:19:00,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:19:00,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:19:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:19:00,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:19:00,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:19:00,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:19:00,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:19:00,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:19:00,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:19:00,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:19:00,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:19:00,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:19:00,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:19:00,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:19:00,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:19:00,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:19:00,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:19:00,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:19:00,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:19:00,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:19:00,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:19:00,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:19:00,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:19:00,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:19:00,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:19:00,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:19:00,298 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:19:00,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:19:00,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:19:00,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:19:00,301 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:19:00,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:19:00,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:19:00,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:19:00,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:19:00,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:19:00,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:19:00,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:19:00,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:19:00,304 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:19:00,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:19:00,304 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:19:00,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:19:00,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:19:00,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:19:00,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:19:00,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:19:00,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:19:00,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:19:00,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:19:00,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:19:00,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:19:00,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:19:00,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:19:00,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:19:00,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:19:00,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:19:00,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:19:00,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:19:00,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:19:00,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 22:19:00,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccfb0e77a/3a8098ad1408424898a570e71ccf6187/FLAG7c0564595 [2019-10-13 22:19:01,566 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:19:01,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 22:19:01,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccfb0e77a/3a8098ad1408424898a570e71ccf6187/FLAG7c0564595 [2019-10-13 22:19:02,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccfb0e77a/3a8098ad1408424898a570e71ccf6187 [2019-10-13 22:19:02,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:19:02,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:19:02,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:02,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:19:02,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:19:02,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:02" (1/1) ... [2019-10-13 22:19:02,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3384d99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:02, skipping insertion in model container [2019-10-13 22:19:02,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:19:02" (1/1) ... [2019-10-13 22:19:02,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:19:02,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:19:04,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:04,117 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:19:04,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:19:04,739 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:19:04,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04 WrapperNode [2019-10-13 22:19:04,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:19:04,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:19:04,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:19:04,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:19:04,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:04,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:04,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:04,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:04,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:04,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:05,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... [2019-10-13 22:19:05,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:19:05,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:19:05,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:19:05,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:19:05,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:19:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:19:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:19:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:19:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 22:19:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 22:19:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 22:19:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 22:19:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 22:19:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_swab32 [2019-10-13 22:19:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 22:19:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2019-10-13 22:19:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-13 22:19:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32p [2019-10-13 22:19:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2019-10-13 22:19:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-13 22:19:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 22:19:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 22:19:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-10-13 22:19:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:19:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 22:19:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:19:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:19:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:19:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2019-10-13 22:19:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2019-10-13 22:19:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2019-10-13 22:19:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-13 22:19:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-13 22:19:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-13 22:19:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2019-10-13 22:19:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:19:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:19:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2019-10-13 22:19:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 22:19:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-13 22:19:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure crc_ccitt_byte [2019-10-13 22:19:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2019-10-13 22:19:05,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2019-10-13 22:19:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_get [2019-10-13 22:19:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_put [2019-10-13 22:19:05,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_open [2019-10-13 22:19:05,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_close [2019-10-13 22:19:05,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_hangup [2019-10-13 22:19:05,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_read [2019-10-13 22:19:05,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_write [2019-10-13 22:19:05,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_ioctl [2019-10-13 22:19:05,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_poll [2019-10-13 22:19:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_receive [2019-10-13 22:19:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_asynctty_wakeup [2019-10-13 22:19:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_init [2019-10-13 22:19:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_ioctl [2019-10-13 22:19:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_process [2019-10-13 22:19:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_encode [2019-10-13 22:19:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_send [2019-10-13 22:19:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_push [2019-10-13 22:19:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_flush_output [2019-10-13 22:19:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_ordinary [2019-10-13 22:19:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure process_input_packet [2019-10-13 22:19:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_input [2019-10-13 22:19:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure async_lcp_peek [2019-10-13 22:19:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_async_cleanup [2019-10-13 22:19:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 22:19:05,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 22:19:05,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:19:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 22:19:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 22:19:05,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 22:19:05,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_12 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_dequeue_14 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_15 [2019-10-13 22:19:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_16 [2019-10-13 22:19:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-13 22:19:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2019-10-13 22:19:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 22:19:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:19:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 22:19:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 22:19:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 22:19:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:19:05,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 22:19:05,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-13 22:19:05,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 22:19:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:19:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-13 22:19:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:19:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:19:05,151 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2019-10-13 22:19:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2019-10-13 22:19:05,152 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 22:19:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-13 22:19:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 22:19:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 22:19:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-13 22:19:05,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:19:05,154 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irq [2019-10-13 22:19:05,154 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irq [2019-10-13 22:19:05,154 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2019-10-13 22:19:05,155 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-10-13 22:19:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:19:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure n_tty_ioctl_helper [2019-10-13 22:19:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-13 22:19:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input [2019-10-13 22:19:05,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_input_error [2019-10-13 22:19:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2019-10-13 22:19:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_channel [2019-10-13 22:19:05,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unit_number [2019-10-13 22:19:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-13 22:19:05,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:19:05,162 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 22:19:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 22:19:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 22:19:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2019-10-13 22:19:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2019-10-13 22:19:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-13 22:19:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure start_tty [2019-10-13 22:19:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_tty [2019-10-13 22:19:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-13 22:19:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-13 22:19:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 22:19:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 22:19:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2019-10-13 22:19:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 22:19:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unthrottle [2019-10-13 22:19:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2019-10-13 22:19:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:19:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:19:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:19:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 22:19:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_swab32 [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2019-10-13 22:19:05,176 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32p [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:19:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-10-13 22:19:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:19:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 22:19:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-13 22:19:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 22:19:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 22:19:05,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-13 22:19:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:19:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2019-10-13 22:19:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irq [2019-10-13 22:19:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2019-10-13 22:19:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irq [2019-10-13 22:19:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:19:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 22:19:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-13 22:19:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:19:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:19:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:19:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:19:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:19:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-13 22:19:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 22:19:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:19:05,184 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:19:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 22:19:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 22:19:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 22:19:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 22:19:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_12 [2019-10-13 22:19:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2019-10-13 22:19:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_16 [2019-10-13 22:19:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-13 22:19:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 22:19:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_15 [2019-10-13 22:19:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2019-10-13 22:19:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:19:05,188 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2019-10-13 22:19:05,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_dequeue_14 [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-13 22:19:05,190 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 22:19:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:19:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:19:05,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:19:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:19:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:19:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:19:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:19:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ppp_channel_ops_2 [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure down [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure up [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure stop_tty [2019-10-13 22:19:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure start_tty [2019-10-13 22:19:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unthrottle [2019-10-13 22:19:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2019-10-13 22:19:05,200 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure n_tty_ioctl_helper [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-13 22:19:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-13 22:19:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-13 22:19:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure crc_ccitt_byte [2019-10-13 22:19:05,203 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2019-10-13 22:19:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input [2019-10-13 22:19:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_input_error [2019-10-13 22:19:05,204 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_channel [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unit_number [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2019-10-13 22:19:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_encode [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_send [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_push [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_flush_output [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_input [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_ioctl [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_process [2019-10-13 22:19:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure async_lcp_peek [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ap_get [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ap_put [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_open [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_close [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_hangup [2019-10-13 22:19:05,207 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_read [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_write [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_ioctl [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_poll [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_receive [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_asynctty_wakeup [2019-10-13 22:19:05,208 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_init [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure scan_ordinary [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure process_input_packet [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_async_cleanup [2019-10-13 22:19:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 22:19:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 22:19:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:19:05,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:19:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:19:06,657 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:19:15,541 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:19:15,541 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:19:15,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:15 BoogieIcfgContainer [2019-10-13 22:19:15,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:19:15,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:19:15,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:19:15,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:19:15,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:19:02" (1/3) ... [2019-10-13 22:19:15,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7884018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:15, skipping insertion in model container [2019-10-13 22:19:15,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:19:04" (2/3) ... [2019-10-13 22:19:15,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7884018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:19:15, skipping insertion in model container [2019-10-13 22:19:15,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:19:15" (3/3) ... [2019-10-13 22:19:15,554 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_async.ko-entry_point.cil.out.i [2019-10-13 22:19:15,564 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:19:15,573 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:19:15,584 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:19:15,619 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:19:15,619 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:19:15,619 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:19:15,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:19:15,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:19:15,620 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:19:15,620 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:19:15,620 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:19:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states. [2019-10-13 22:19:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 22:19:15,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:15,673 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] [2019-10-13 22:19:15,676 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash 469378667, now seen corresponding path program 1 times [2019-10-13 22:19:15,691 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:15,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467157665] [2019-10-13 22:19:15,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:15,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:15,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:16,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467157665] [2019-10-13 22:19:16,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:16,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:16,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571481361] [2019-10-13 22:19:16,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:16,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:16,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:16,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:16,267 INFO L87 Difference]: Start difference. First operand 870 states. Second operand 3 states. [2019-10-13 22:19:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:16,525 INFO L93 Difference]: Finished difference Result 2377 states and 3088 transitions. [2019-10-13 22:19:16,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:16,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-10-13 22:19:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:16,565 INFO L225 Difference]: With dead ends: 2377 [2019-10-13 22:19:16,565 INFO L226 Difference]: Without dead ends: 1564 [2019-10-13 22:19:16,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2019-10-13 22:19:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2019-10-13 22:19:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2019-10-13 22:19:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1985 transitions. [2019-10-13 22:19:16,784 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1985 transitions. Word has length 95 [2019-10-13 22:19:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:16,785 INFO L462 AbstractCegarLoop]: Abstraction has 1564 states and 1985 transitions. [2019-10-13 22:19:16,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1985 transitions. [2019-10-13 22:19:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 22:19:16,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:16,792 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] [2019-10-13 22:19:16,792 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash -827239716, now seen corresponding path program 1 times [2019-10-13 22:19:16,793 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:16,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500287695] [2019-10-13 22:19:16,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:16,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:16,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-13 22:19:17,017 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500287695] [2019-10-13 22:19:17,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:17,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:19:17,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582726622] [2019-10-13 22:19:17,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:19:17,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:17,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:19:17,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:19:17,021 INFO L87 Difference]: Start difference. First operand 1564 states and 1985 transitions. Second operand 6 states. [2019-10-13 22:19:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:18,330 INFO L93 Difference]: Finished difference Result 3104 states and 3986 transitions. [2019-10-13 22:19:18,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:19:18,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-13 22:19:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:18,357 INFO L225 Difference]: With dead ends: 3104 [2019-10-13 22:19:18,358 INFO L226 Difference]: Without dead ends: 3086 [2019-10-13 22:19:18,361 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 [2019-10-13 22:19:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2019-10-13 22:19:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3086. [2019-10-13 22:19:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3086 states. [2019-10-13 22:19:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3966 transitions. [2019-10-13 22:19:18,528 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3966 transitions. Word has length 98 [2019-10-13 22:19:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:18,529 INFO L462 AbstractCegarLoop]: Abstraction has 3086 states and 3966 transitions. [2019-10-13 22:19:18,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:19:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3966 transitions. [2019-10-13 22:19:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 22:19:18,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:18,540 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] [2019-10-13 22:19:18,540 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1976508298, now seen corresponding path program 1 times [2019-10-13 22:19:18,541 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:18,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915074493] [2019-10-13 22:19:18,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:18,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:18,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2019-10-13 22:19:18,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915074493] [2019-10-13 22:19:18,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:18,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:18,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488846197] [2019-10-13 22:19:18,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:18,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:18,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:18,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:18,693 INFO L87 Difference]: Start difference. First operand 3086 states and 3966 transitions. Second operand 3 states. [2019-10-13 22:19:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:18,899 INFO L93 Difference]: Finished difference Result 7430 states and 9557 transitions. [2019-10-13 22:19:18,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:18,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 22:19:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:18,926 INFO L225 Difference]: With dead ends: 7430 [2019-10-13 22:19:18,926 INFO L226 Difference]: Without dead ends: 4376 [2019-10-13 22:19:18,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2019-10-13 22:19:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4356. [2019-10-13 22:19:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4356 states. [2019-10-13 22:19:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5610 transitions. [2019-10-13 22:19:19,253 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5610 transitions. Word has length 174 [2019-10-13 22:19:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:19,254 INFO L462 AbstractCegarLoop]: Abstraction has 4356 states and 5610 transitions. [2019-10-13 22:19:19,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5610 transitions. [2019-10-13 22:19:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 22:19:19,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:19,264 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] [2019-10-13 22:19:19,264 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:19,265 INFO L82 PathProgramCache]: Analyzing trace with hash -276466131, now seen corresponding path program 1 times [2019-10-13 22:19:19,265 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:19,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297920601] [2019-10-13 22:19:19,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:19,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:19,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2019-10-13 22:19:19,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297920601] [2019-10-13 22:19:19,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:19,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:19,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229531321] [2019-10-13 22:19:19,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:19,394 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:19,395 INFO L87 Difference]: Start difference. First operand 4356 states and 5610 transitions. Second operand 3 states. [2019-10-13 22:19:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:19,612 INFO L93 Difference]: Finished difference Result 11026 states and 14117 transitions. [2019-10-13 22:19:19,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:19,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-13 22:19:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:19,665 INFO L225 Difference]: With dead ends: 11026 [2019-10-13 22:19:19,665 INFO L226 Difference]: Without dead ends: 6702 [2019-10-13 22:19:19,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2019-10-13 22:19:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6684. [2019-10-13 22:19:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6684 states. [2019-10-13 22:19:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6684 states to 6684 states and 8524 transitions. [2019-10-13 22:19:20,095 INFO L78 Accepts]: Start accepts. Automaton has 6684 states and 8524 transitions. Word has length 193 [2019-10-13 22:19:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:20,096 INFO L462 AbstractCegarLoop]: Abstraction has 6684 states and 8524 transitions. [2019-10-13 22:19:20,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6684 states and 8524 transitions. [2019-10-13 22:19:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 22:19:20,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:20,132 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] [2019-10-13 22:19:20,132 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:20,132 INFO L82 PathProgramCache]: Analyzing trace with hash 783819149, now seen corresponding path program 1 times [2019-10-13 22:19:20,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:20,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747503886] [2019-10-13 22:19:20,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:20,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-10-13 22:19:20,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747503886] [2019-10-13 22:19:20,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:20,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:20,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546657270] [2019-10-13 22:19:20,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:20,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:20,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:20,456 INFO L87 Difference]: Start difference. First operand 6684 states and 8524 transitions. Second operand 3 states. [2019-10-13 22:19:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:20,816 INFO L93 Difference]: Finished difference Result 16054 states and 20481 transitions. [2019-10-13 22:19:20,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:20,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-10-13 22:19:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:20,870 INFO L225 Difference]: With dead ends: 16054 [2019-10-13 22:19:20,870 INFO L226 Difference]: Without dead ends: 9410 [2019-10-13 22:19:20,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2019-10-13 22:19:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 9390. [2019-10-13 22:19:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9390 states. [2019-10-13 22:19:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9390 states to 9390 states and 11884 transitions. [2019-10-13 22:19:21,615 INFO L78 Accepts]: Start accepts. Automaton has 9390 states and 11884 transitions. Word has length 207 [2019-10-13 22:19:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:21,616 INFO L462 AbstractCegarLoop]: Abstraction has 9390 states and 11884 transitions. [2019-10-13 22:19:21,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9390 states and 11884 transitions. [2019-10-13 22:19:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 22:19:21,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:21,639 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] [2019-10-13 22:19:21,639 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 564113598, now seen corresponding path program 1 times [2019-10-13 22:19:21,640 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:21,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204471654] [2019-10-13 22:19:21,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:21,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2019-10-13 22:19:21,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204471654] [2019-10-13 22:19:21,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:19:21,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:19:21,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877571334] [2019-10-13 22:19:21,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:19:21,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:19:21,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:19:21,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:21,826 INFO L87 Difference]: Start difference. First operand 9390 states and 11884 transitions. Second operand 3 states. [2019-10-13 22:19:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:19:22,070 INFO L93 Difference]: Finished difference Result 14150 states and 18122 transitions. [2019-10-13 22:19:22,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:19:22,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-10-13 22:19:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:19:22,149 INFO L225 Difference]: With dead ends: 14150 [2019-10-13 22:19:22,149 INFO L226 Difference]: Without dead ends: 9430 [2019-10-13 22:19:22,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:19:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9430 states. [2019-10-13 22:19:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9430 to 9410. [2019-10-13 22:19:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9410 states. [2019-10-13 22:19:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 11904 transitions. [2019-10-13 22:19:22,679 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 11904 transitions. Word has length 226 [2019-10-13 22:19:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:19:22,680 INFO L462 AbstractCegarLoop]: Abstraction has 9410 states and 11904 transitions. [2019-10-13 22:19:22,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:19:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 11904 transitions. [2019-10-13 22:19:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 22:19:22,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:19:22,706 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] [2019-10-13 22:19:22,707 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:19:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:19:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 386681372, now seen corresponding path program 1 times [2019-10-13 22:19:22,707 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:19:22,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405474042] [2019-10-13 22:19:22,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:22,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:19:22,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:19:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2019-10-13 22:19:23,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405474042] [2019-10-13 22:19:23,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993105768] [2019-10-13 22:19:23,219 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 [2019-10-13 22:19:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:19:23,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-13 22:19:23,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:19:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-10-13 22:19:23,899 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:19:25,765 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-10-13 22:19:26,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:19:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-10-13 22:19:26,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [186734941] [2019-10-13 22:19:26,815 INFO L162 IcfgInterpreter]: Started Sifa with 152 locations of interest [2019-10-13 22:19:26,816 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:19:26,822 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:19:26,830 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:19:26,830 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:19:27,847 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 434 [2019-10-13 22:19:29,199 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:29,452 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:29,597 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:29,774 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,062 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 481 [2019-10-13 22:19:30,188 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,328 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,453 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,567 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,708 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 481 [2019-10-13 22:19:30,721 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 148 for LOIs [2019-10-13 22:19:30,960 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 499 for LOIs [2019-10-13 22:19:31,588 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-13 22:19:31,800 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 22:19:31,940 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-13 22:19:32,069 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-13 22:19:32,281 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 22:19:32,503 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 550 DAG size of output: 507 [2019-10-13 22:19:32,731 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 548