/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:24:33,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:24:33,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:24:33,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:24:33,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:24:33,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:24:33,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:24:33,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:24:33,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:24:33,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:24:33,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:24:33,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:24:33,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:24:33,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:24:33,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:24:33,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:24:33,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:24:33,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:24:33,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:24:33,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:24:33,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:24:33,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:24:33,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:24:33,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:24:33,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:24:33,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:24:33,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:24:33,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:24:33,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:24:33,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:24:33,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:24:33,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:24:33,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:24:33,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:24:33,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:24:33,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:24:33,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:24:33,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:24:33,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:24:33,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:24:33,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:24:33,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 02:24:33,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:24:33,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:24:33,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:24:33,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:24:33,714 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:24:33,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:24:33,714 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:24:33,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:24:33,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:24:33,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:24:33,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:24:33,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:24:33,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:24:33,715 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:24:33,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:24:33,716 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:24:33,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:24:33,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:24:33,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:24:33,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:24:33,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:24:33,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:24:33,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:24:33,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:24:33,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:24:33,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:24:33,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:24:33,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:24:33,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 02:24:33,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:24:34,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:24:34,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:24:34,011 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:24:34,012 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:24:34,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-07 02:24:34,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf6b113bb/a372944077af41ddbac8b309d50bdf7e/FLAGd609f9b44 [2019-11-07 02:24:34,825 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:24:34,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-07 02:24:34,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf6b113bb/a372944077af41ddbac8b309d50bdf7e/FLAGd609f9b44 [2019-11-07 02:24:34,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf6b113bb/a372944077af41ddbac8b309d50bdf7e [2019-11-07 02:24:34,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:24:34,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:24:34,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:24:34,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:24:34,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:24:34,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:34" (1/1) ... [2019-11-07 02:24:34,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47776c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:34, skipping insertion in model container [2019-11-07 02:24:34,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:34" (1/1) ... [2019-11-07 02:24:34,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:24:35,044 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:24:36,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:24:36,529 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:24:36,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:24:36,902 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:24:36,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36 WrapperNode [2019-11-07 02:24:36,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:24:36,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:24:36,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:24:36,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:24:36,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:36,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... [2019-11-07 02:24:37,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:24:37,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:24:37,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:24:37,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:24:37,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:24:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:24:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:24:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-07 02:24:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-07 02:24:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-11-07 02:24:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-07 02:24:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-07 02:24:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-07 02:24:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-07 02:24:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-11-07 02:24:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-11-07 02:24:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:24:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:24:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:24:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:24:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-07 02:24:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 02:24:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-11-07 02:24:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-11-07 02:24:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-11-07 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-11-07 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-11-07 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-11-07 02:24:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-11-07 02:24:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-11-07 02:24:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-11-07 02:24:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-11-07 02:24:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-11-07 02:24:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-11-07 02:24:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2019-11-07 02:24:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-11-07 02:24:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-11-07 02:24:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2019-11-07 02:24:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_16 [2019-11-07 02:24:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2019-11-07 02:24:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:24:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:24:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:24:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-11-07 02:24:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-11-07 02:24:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-11-07 02:24:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-11-07 02:24:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-07 02:24:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-11-07 02:24:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-11-07 02:24:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-07 02:24:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-07 02:24:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-11-07 02:24:37,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-11-07 02:24:37,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-07 02:24:37,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-07 02:24:37,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pt_mutex [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pt_mutex [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-11-07 02:24:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pt_mutex [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-11-07 02:24:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-11-07 02:24:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 02:24:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-07 02:24:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-11-07 02:24:37,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-11-07 02:24:37,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-11-07 02:24:37,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-11-07 02:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-11-07 02:24:37,324 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:24:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-11-07 02:24:37,325 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-07 02:24:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:24:37,326 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:24:37,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 02:24:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-07 02:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-07 02:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-07 02:24:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-07 02:24:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-11-07 02:24:37,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:24:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-07 02:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:24:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-07 02:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-07 02:24:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-11-07 02:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-11-07 02:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-07 02:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-11-07 02:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-11-07 02:24:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-11-07 02:24:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-11-07 02:24:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-11-07 02:24:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-11-07 02:24:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-11-07 02:24:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2019-11-07 02:24:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-07 02:24:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-11-07 02:24:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-11-07 02:24:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-11-07 02:24:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-11-07 02:24:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2019-11-07 02:24:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-11-07 02:24:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-11-07 02:24:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-11-07 02:24:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-11-07 02:24:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-11-07 02:24:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-11-07 02:24:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2019-11-07 02:24:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2019-11-07 02:24:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:24:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-07 02:24:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-11-07 02:24:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-11-07 02:24:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_16 [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-11-07 02:24:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:24:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:24:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:24:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:24:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-11-07 02:24:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-11-07 02:24:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-11-07 02:24:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-11-07 02:24:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 02:24:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-07 02:24:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-07 02:24:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 02:24:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-11-07 02:24:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-11-07 02:24:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-11-07 02:24:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-11-07 02:24:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-11-07 02:24:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-11-07 02:24:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-11-07 02:24:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pt_mutex [2019-11-07 02:24:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pt_mutex [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pt_mutex [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:24:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:24:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:24:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:24:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:24:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:24:47,002 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:24:47,004 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 02:24:47,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:47 BoogieIcfgContainer [2019-11-07 02:24:47,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:24:47,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:24:47,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:24:47,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:24:47,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:34" (1/3) ... [2019-11-07 02:24:47,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce873a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:47, skipping insertion in model container [2019-11-07 02:24:47,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:36" (2/3) ... [2019-11-07 02:24:47,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce873a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:47, skipping insertion in model container [2019-11-07 02:24:47,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:47" (3/3) ... [2019-11-07 02:24:47,019 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-07 02:24:47,029 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:24:47,043 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:24:47,054 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:24:47,093 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:24:47,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:24:47,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:24:47,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:24:47,095 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:24:47,095 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:24:47,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:24:47,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:24:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states. [2019-11-07 02:24:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 02:24:47,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:47,148 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:47,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:47,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2135758099, now seen corresponding path program 1 times [2019-11-07 02:24:47,166 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:47,166 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224901585] [2019-11-07 02:24:47,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:47,725 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224901585] [2019-11-07 02:24:47,726 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:47,726 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:47,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907814069] [2019-11-07 02:24:47,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:47,732 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:47,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:47,748 INFO L87 Difference]: Start difference. First operand 761 states. Second operand 3 states. [2019-11-07 02:24:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:48,102 INFO L93 Difference]: Finished difference Result 1660 states and 2330 transitions. [2019-11-07 02:24:48,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:48,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-07 02:24:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:48,155 INFO L225 Difference]: With dead ends: 1660 [2019-11-07 02:24:48,155 INFO L226 Difference]: Without dead ends: 964 [2019-11-07 02:24:48,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-11-07 02:24:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 921. [2019-11-07 02:24:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-11-07 02:24:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1246 transitions. [2019-11-07 02:24:48,305 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1246 transitions. Word has length 28 [2019-11-07 02:24:48,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:48,306 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1246 transitions. [2019-11-07 02:24:48,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1246 transitions. [2019-11-07 02:24:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 02:24:48,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:48,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:48,309 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:48,310 INFO L82 PathProgramCache]: Analyzing trace with hash 253566313, now seen corresponding path program 1 times [2019-11-07 02:24:48,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:48,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003919684] [2019-11-07 02:24:48,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:48,557 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003919684] [2019-11-07 02:24:48,557 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:48,557 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:24:48,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403964749] [2019-11-07 02:24:48,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:48,560 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:48,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:48,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:48,560 INFO L87 Difference]: Start difference. First operand 921 states and 1246 transitions. Second operand 4 states. [2019-11-07 02:24:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:50,062 INFO L93 Difference]: Finished difference Result 1833 states and 2485 transitions. [2019-11-07 02:24:50,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:50,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-11-07 02:24:50,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:50,078 INFO L225 Difference]: With dead ends: 1833 [2019-11-07 02:24:50,079 INFO L226 Difference]: Without dead ends: 921 [2019-11-07 02:24:50,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-11-07 02:24:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2019-11-07 02:24:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-11-07 02:24:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1244 transitions. [2019-11-07 02:24:50,220 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1244 transitions. Word has length 27 [2019-11-07 02:24:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:50,221 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1244 transitions. [2019-11-07 02:24:50,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1244 transitions. [2019-11-07 02:24:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-07 02:24:50,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:50,231 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:50,232 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:50,232 INFO L82 PathProgramCache]: Analyzing trace with hash 250768757, now seen corresponding path program 1 times [2019-11-07 02:24:50,233 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:50,233 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050457485] [2019-11-07 02:24:50,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:50,502 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050457485] [2019-11-07 02:24:50,502 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:50,502 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:50,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364398603] [2019-11-07 02:24:50,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:50,504 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:50,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:50,504 INFO L87 Difference]: Start difference. First operand 921 states and 1244 transitions. Second operand 3 states. [2019-11-07 02:24:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:50,625 INFO L93 Difference]: Finished difference Result 1859 states and 2527 transitions. [2019-11-07 02:24:50,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:50,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-11-07 02:24:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:50,635 INFO L225 Difference]: With dead ends: 1859 [2019-11-07 02:24:50,635 INFO L226 Difference]: Without dead ends: 947 [2019-11-07 02:24:50,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2019-11-07 02:24:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 923. [2019-11-07 02:24:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-11-07 02:24:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1246 transitions. [2019-11-07 02:24:50,700 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1246 transitions. Word has length 35 [2019-11-07 02:24:50,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:50,700 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1246 transitions. [2019-11-07 02:24:50,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1246 transitions. [2019-11-07 02:24:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 02:24:50,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:50,705 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:50,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:50,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1659733765, now seen corresponding path program 1 times [2019-11-07 02:24:50,706 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:50,706 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495496078] [2019-11-07 02:24:50,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:50,888 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495496078] [2019-11-07 02:24:50,888 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:50,888 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:50,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116395755] [2019-11-07 02:24:50,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:50,889 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:50,890 INFO L87 Difference]: Start difference. First operand 923 states and 1246 transitions. Second operand 3 states. [2019-11-07 02:24:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:51,585 INFO L93 Difference]: Finished difference Result 2015 states and 2712 transitions. [2019-11-07 02:24:51,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:51,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-07 02:24:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:51,593 INFO L225 Difference]: With dead ends: 2015 [2019-11-07 02:24:51,593 INFO L226 Difference]: Without dead ends: 1101 [2019-11-07 02:24:51,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2019-11-07 02:24:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1101. [2019-11-07 02:24:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2019-11-07 02:24:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1472 transitions. [2019-11-07 02:24:51,661 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1472 transitions. Word has length 40 [2019-11-07 02:24:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:51,662 INFO L462 AbstractCegarLoop]: Abstraction has 1101 states and 1472 transitions. [2019-11-07 02:24:51,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1472 transitions. [2019-11-07 02:24:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 02:24:51,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:51,663 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:51,663 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1078756022, now seen corresponding path program 1 times [2019-11-07 02:24:51,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:51,664 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121702094] [2019-11-07 02:24:51,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:51,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121702094] [2019-11-07 02:24:51,817 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:51,817 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:51,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709283379] [2019-11-07 02:24:51,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:51,818 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:51,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:51,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:51,819 INFO L87 Difference]: Start difference. First operand 1101 states and 1472 transitions. Second operand 3 states. [2019-11-07 02:24:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:51,903 INFO L93 Difference]: Finished difference Result 2200 states and 2952 transitions. [2019-11-07 02:24:51,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:51,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-11-07 02:24:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:51,913 INFO L225 Difference]: With dead ends: 2200 [2019-11-07 02:24:51,913 INFO L226 Difference]: Without dead ends: 1117 [2019-11-07 02:24:51,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2019-11-07 02:24:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1113. [2019-11-07 02:24:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2019-11-07 02:24:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1490 transitions. [2019-11-07 02:24:51,994 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1490 transitions. Word has length 42 [2019-11-07 02:24:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:51,994 INFO L462 AbstractCegarLoop]: Abstraction has 1113 states and 1490 transitions. [2019-11-07 02:24:51,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1490 transitions. [2019-11-07 02:24:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 02:24:51,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:51,996 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:51,996 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:51,996 INFO L82 PathProgramCache]: Analyzing trace with hash 925321270, now seen corresponding path program 1 times [2019-11-07 02:24:51,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:51,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655880325] [2019-11-07 02:24:51,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:52,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655880325] [2019-11-07 02:24:52,158 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:52,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:52,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680236662] [2019-11-07 02:24:52,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:52,159 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:52,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:52,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:52,161 INFO L87 Difference]: Start difference. First operand 1113 states and 1490 transitions. Second operand 3 states. [2019-11-07 02:24:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:53,301 INFO L93 Difference]: Finished difference Result 1115 states and 1491 transitions. [2019-11-07 02:24:53,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:53,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-11-07 02:24:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:53,311 INFO L225 Difference]: With dead ends: 1115 [2019-11-07 02:24:53,311 INFO L226 Difference]: Without dead ends: 1112 [2019-11-07 02:24:53,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-11-07 02:24:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-11-07 02:24:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-11-07 02:24:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1488 transitions. [2019-11-07 02:24:53,393 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1488 transitions. Word has length 47 [2019-11-07 02:24:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:53,395 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1488 transitions. [2019-11-07 02:24:53,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1488 transitions. [2019-11-07 02:24:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-07 02:24:53,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:53,398 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:53,398 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:53,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:53,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1380369154, now seen corresponding path program 1 times [2019-11-07 02:24:53,404 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:53,404 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091323987] [2019-11-07 02:24:53,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:53,564 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091323987] [2019-11-07 02:24:53,564 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:53,565 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:53,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146346752] [2019-11-07 02:24:53,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:53,565 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:53,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:53,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:53,566 INFO L87 Difference]: Start difference. First operand 1112 states and 1488 transitions. Second operand 3 states. [2019-11-07 02:24:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:54,070 INFO L93 Difference]: Finished difference Result 1114 states and 1489 transitions. [2019-11-07 02:24:54,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:54,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-11-07 02:24:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:54,082 INFO L225 Difference]: With dead ends: 1114 [2019-11-07 02:24:54,082 INFO L226 Difference]: Without dead ends: 1111 [2019-11-07 02:24:54,083 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2019-11-07 02:24:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2019-11-07 02:24:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2019-11-07 02:24:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1486 transitions. [2019-11-07 02:24:54,148 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1486 transitions. Word has length 48 [2019-11-07 02:24:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:54,149 INFO L462 AbstractCegarLoop]: Abstraction has 1111 states and 1486 transitions. [2019-11-07 02:24:54,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1486 transitions. [2019-11-07 02:24:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-07 02:24:54,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:54,150 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:54,150 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash 157676601, now seen corresponding path program 1 times [2019-11-07 02:24:54,151 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:54,151 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707823340] [2019-11-07 02:24:54,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:54,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707823340] [2019-11-07 02:24:54,299 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:54,300 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:54,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381291062] [2019-11-07 02:24:54,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:54,302 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:54,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:54,304 INFO L87 Difference]: Start difference. First operand 1111 states and 1486 transitions. Second operand 3 states. [2019-11-07 02:24:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:54,876 INFO L93 Difference]: Finished difference Result 1113 states and 1487 transitions. [2019-11-07 02:24:54,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:54,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-11-07 02:24:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:54,889 INFO L225 Difference]: With dead ends: 1113 [2019-11-07 02:24:54,890 INFO L226 Difference]: Without dead ends: 1110 [2019-11-07 02:24:54,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2019-11-07 02:24:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2019-11-07 02:24:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2019-11-07 02:24:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1484 transitions. [2019-11-07 02:24:55,088 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1484 transitions. Word has length 49 [2019-11-07 02:24:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:55,088 INFO L462 AbstractCegarLoop]: Abstraction has 1110 states and 1484 transitions. [2019-11-07 02:24:55,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1484 transitions. [2019-11-07 02:24:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-07 02:24:55,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:55,089 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:55,090 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash 592459617, now seen corresponding path program 1 times [2019-11-07 02:24:55,090 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:55,091 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038521040] [2019-11-07 02:24:55,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:55,253 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038521040] [2019-11-07 02:24:55,253 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:55,253 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:55,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576283020] [2019-11-07 02:24:55,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:55,255 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:55,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:55,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:55,255 INFO L87 Difference]: Start difference. First operand 1110 states and 1484 transitions. Second operand 3 states. [2019-11-07 02:24:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:56,074 INFO L93 Difference]: Finished difference Result 1271 states and 1688 transitions. [2019-11-07 02:24:56,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:56,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-07 02:24:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:56,087 INFO L225 Difference]: With dead ends: 1271 [2019-11-07 02:24:56,087 INFO L226 Difference]: Without dead ends: 1229 [2019-11-07 02:24:56,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2019-11-07 02:24:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2019-11-07 02:24:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2019-11-07 02:24:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1637 transitions. [2019-11-07 02:24:56,193 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1637 transitions. Word has length 50 [2019-11-07 02:24:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:56,193 INFO L462 AbstractCegarLoop]: Abstraction has 1229 states and 1637 transitions. [2019-11-07 02:24:56,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1637 transitions. [2019-11-07 02:24:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 02:24:56,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:56,198 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:56,199 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash 171832610, now seen corresponding path program 1 times [2019-11-07 02:24:56,200 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:56,200 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793821918] [2019-11-07 02:24:56,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:56,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793821918] [2019-11-07 02:24:56,395 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:56,395 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:24:56,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286136507] [2019-11-07 02:24:56,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:24:56,396 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:56,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:24:56,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:24:56,397 INFO L87 Difference]: Start difference. First operand 1229 states and 1637 transitions. Second operand 6 states. [2019-11-07 02:24:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:56,514 INFO L93 Difference]: Finished difference Result 2496 states and 3342 transitions. [2019-11-07 02:24:56,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:24:56,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-11-07 02:24:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:56,525 INFO L225 Difference]: With dead ends: 2496 [2019-11-07 02:24:56,525 INFO L226 Difference]: Without dead ends: 1285 [2019-11-07 02:24:56,531 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:24:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-11-07 02:24:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1285. [2019-11-07 02:24:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2019-11-07 02:24:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1721 transitions. [2019-11-07 02:24:56,611 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1721 transitions. Word has length 90 [2019-11-07 02:24:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:56,611 INFO L462 AbstractCegarLoop]: Abstraction has 1285 states and 1721 transitions. [2019-11-07 02:24:56,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:24:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1721 transitions. [2019-11-07 02:24:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 02:24:56,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:56,614 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:56,615 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:56,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1196424685, now seen corresponding path program 1 times [2019-11-07 02:24:56,615 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:56,615 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875376691] [2019-11-07 02:24:56,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:24:56,778 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875376691] [2019-11-07 02:24:56,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:56,779 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:56,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894230508] [2019-11-07 02:24:56,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:56,780 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:56,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:56,781 INFO L87 Difference]: Start difference. First operand 1285 states and 1721 transitions. Second operand 5 states. [2019-11-07 02:24:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:56,895 INFO L93 Difference]: Finished difference Result 2580 states and 3468 transitions. [2019-11-07 02:24:56,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:24:56,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-07 02:24:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:56,911 INFO L225 Difference]: With dead ends: 2580 [2019-11-07 02:24:56,911 INFO L226 Difference]: Without dead ends: 1313 [2019-11-07 02:24:56,920 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-11-07 02:24:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1297. [2019-11-07 02:24:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2019-11-07 02:24:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1739 transitions. [2019-11-07 02:24:57,103 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1739 transitions. Word has length 100 [2019-11-07 02:24:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:57,104 INFO L462 AbstractCegarLoop]: Abstraction has 1297 states and 1739 transitions. [2019-11-07 02:24:57,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1739 transitions. [2019-11-07 02:24:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 02:24:57,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:57,111 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:24:57,111 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -305324997, now seen corresponding path program 1 times [2019-11-07 02:24:57,112 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:57,112 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393196868] [2019-11-07 02:24:57,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:24:57,304 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393196868] [2019-11-07 02:24:57,304 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:57,304 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:57,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060675198] [2019-11-07 02:24:57,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:57,306 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:57,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:57,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:57,307 INFO L87 Difference]: Start difference. First operand 1297 states and 1739 transitions. Second operand 5 states. [2019-11-07 02:24:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:57,440 INFO L93 Difference]: Finished difference Result 2688 states and 3638 transitions. [2019-11-07 02:24:57,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:24:57,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-07 02:24:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:57,451 INFO L225 Difference]: With dead ends: 2688 [2019-11-07 02:24:57,451 INFO L226 Difference]: Without dead ends: 1409 [2019-11-07 02:24:57,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:24:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2019-11-07 02:24:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1305. [2019-11-07 02:24:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2019-11-07 02:24:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1747 transitions. [2019-11-07 02:24:57,541 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1747 transitions. Word has length 100 [2019-11-07 02:24:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:57,542 INFO L462 AbstractCegarLoop]: Abstraction has 1305 states and 1747 transitions. [2019-11-07 02:24:57,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1747 transitions. [2019-11-07 02:24:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 02:24:57,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:57,550 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:57,550 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1004996624, now seen corresponding path program 1 times [2019-11-07 02:24:57,551 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:57,551 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115436126] [2019-11-07 02:24:57,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 02:24:57,802 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115436126] [2019-11-07 02:24:57,802 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:57,803 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:24:57,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437490408] [2019-11-07 02:24:57,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:24:57,805 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:24:57,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:57,806 INFO L87 Difference]: Start difference. First operand 1305 states and 1747 transitions. Second operand 4 states. [2019-11-07 02:24:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:57,907 INFO L93 Difference]: Finished difference Result 2628 states and 3560 transitions. [2019-11-07 02:24:57,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:24:57,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2019-11-07 02:24:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:57,918 INFO L225 Difference]: With dead ends: 2628 [2019-11-07 02:24:57,918 INFO L226 Difference]: Without dead ends: 1341 [2019-11-07 02:24:57,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:24:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-11-07 02:24:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1309. [2019-11-07 02:24:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2019-11-07 02:24:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1751 transitions. [2019-11-07 02:24:58,002 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1751 transitions. Word has length 197 [2019-11-07 02:24:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:58,003 INFO L462 AbstractCegarLoop]: Abstraction has 1309 states and 1751 transitions. [2019-11-07 02:24:58,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:24:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1751 transitions. [2019-11-07 02:24:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 02:24:58,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:58,008 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:58,009 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 266596508, now seen corresponding path program 1 times [2019-11-07 02:24:58,010 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:58,014 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084021552] [2019-11-07 02:24:58,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 02:24:58,206 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084021552] [2019-11-07 02:24:58,206 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:58,206 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:58,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920434690] [2019-11-07 02:24:58,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:58,208 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:58,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:58,209 INFO L87 Difference]: Start difference. First operand 1309 states and 1751 transitions. Second operand 3 states. [2019-11-07 02:24:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:58,426 INFO L93 Difference]: Finished difference Result 2612 states and 3530 transitions. [2019-11-07 02:24:58,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:58,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-11-07 02:24:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:58,441 INFO L225 Difference]: With dead ends: 2612 [2019-11-07 02:24:58,441 INFO L226 Difference]: Without dead ends: 1321 [2019-11-07 02:24:58,451 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2019-11-07 02:24:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1313. [2019-11-07 02:24:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2019-11-07 02:24:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1755 transitions. [2019-11-07 02:24:58,549 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1755 transitions. Word has length 206 [2019-11-07 02:24:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:58,550 INFO L462 AbstractCegarLoop]: Abstraction has 1313 states and 1755 transitions. [2019-11-07 02:24:58,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1755 transitions. [2019-11-07 02:24:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 02:24:58,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:58,559 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:58,560 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1444203615, now seen corresponding path program 1 times [2019-11-07 02:24:58,561 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:58,561 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636432039] [2019-11-07 02:24:58,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 02:24:58,790 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636432039] [2019-11-07 02:24:58,791 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:58,791 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:24:58,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645294163] [2019-11-07 02:24:58,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:24:58,792 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:24:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:58,792 INFO L87 Difference]: Start difference. First operand 1313 states and 1755 transitions. Second operand 5 states. [2019-11-07 02:24:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:58,875 INFO L93 Difference]: Finished difference Result 2632 states and 3620 transitions. [2019-11-07 02:24:58,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:24:58,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2019-11-07 02:24:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:58,885 INFO L225 Difference]: With dead ends: 2632 [2019-11-07 02:24:58,886 INFO L226 Difference]: Without dead ends: 1337 [2019-11-07 02:24:58,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:24:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2019-11-07 02:24:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1329. [2019-11-07 02:24:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2019-11-07 02:24:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1785 transitions. [2019-11-07 02:24:58,969 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1785 transitions. Word has length 213 [2019-11-07 02:24:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:58,970 INFO L462 AbstractCegarLoop]: Abstraction has 1329 states and 1785 transitions. [2019-11-07 02:24:58,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:24:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1785 transitions. [2019-11-07 02:24:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-07 02:24:58,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:58,976 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:58,976 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:58,976 INFO L82 PathProgramCache]: Analyzing trace with hash -869759666, now seen corresponding path program 1 times [2019-11-07 02:24:58,977 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:58,977 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878968026] [2019-11-07 02:24:58,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-07 02:24:59,216 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878968026] [2019-11-07 02:24:59,217 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:24:59,217 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:24:59,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328237648] [2019-11-07 02:24:59,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:24:59,218 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:24:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:24:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:59,218 INFO L87 Difference]: Start difference. First operand 1329 states and 1785 transitions. Second operand 3 states. [2019-11-07 02:24:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:24:59,296 INFO L93 Difference]: Finished difference Result 2652 states and 3618 transitions. [2019-11-07 02:24:59,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:24:59,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2019-11-07 02:24:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:24:59,306 INFO L225 Difference]: With dead ends: 2652 [2019-11-07 02:24:59,307 INFO L226 Difference]: Without dead ends: 1341 [2019-11-07 02:24:59,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:24:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-11-07 02:24:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1333. [2019-11-07 02:24:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-11-07 02:24:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1789 transitions. [2019-11-07 02:24:59,388 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1789 transitions. Word has length 239 [2019-11-07 02:24:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:24:59,389 INFO L462 AbstractCegarLoop]: Abstraction has 1333 states and 1789 transitions. [2019-11-07 02:24:59,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:24:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1789 transitions. [2019-11-07 02:24:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-11-07 02:24:59,395 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:24:59,395 INFO L410 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:24:59,396 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:24:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:24:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash 276739494, now seen corresponding path program 1 times [2019-11-07 02:24:59,396 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:24:59,397 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429603773] [2019-11-07 02:24:59,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:24:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:24:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-11-07 02:24:59,819 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429603773] [2019-11-07 02:24:59,820 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781385311] [2019-11-07 02:24:59,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:25:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:25:00,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 02:25:00,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:25:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-11-07 02:25:00,907 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:25:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-11-07 02:25:01,747 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 02:25:01,747 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2019-11-07 02:25:01,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990407935] [2019-11-07 02:25:01,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:25:01,748 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:25:01,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:25:01,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 02:25:01,749 INFO L87 Difference]: Start difference. First operand 1333 states and 1789 transitions. Second operand 4 states. [2019-11-07 02:25:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:25:01,868 INFO L93 Difference]: Finished difference Result 2656 states and 3572 transitions. [2019-11-07 02:25:01,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:25:01,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2019-11-07 02:25:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:25:01,881 INFO L225 Difference]: With dead ends: 2656 [2019-11-07 02:25:01,881 INFO L226 Difference]: Without dead ends: 1341 [2019-11-07 02:25:01,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 02:25:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2019-11-07 02:25:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2019-11-07 02:25:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-11-07 02:25:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1799 transitions. [2019-11-07 02:25:02,009 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1799 transitions. Word has length 308 [2019-11-07 02:25:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:25:02,010 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 1799 transitions. [2019-11-07 02:25:02,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:25:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1799 transitions. [2019-11-07 02:25:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2019-11-07 02:25:02,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:25:02,019 INFO L410 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:25:02,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:25:02,240 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:25:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:25:02,240 INFO L82 PathProgramCache]: Analyzing trace with hash 570082696, now seen corresponding path program 1 times [2019-11-07 02:25:02,241 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:25:02,241 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788293024] [2019-11-07 02:25:02,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:25:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:25:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-11-07 02:25:02,833 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788293024] [2019-11-07 02:25:02,834 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075679561] [2019-11-07 02:25:02,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:25:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:25:03,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 3486 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:25:03,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:25:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-11-07 02:25:03,991 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:25:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2019-11-07 02:25:04,924 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612260494] [2019-11-07 02:25:04,986 INFO L159 IcfgInterpreter]: Started Sifa with 202 locations of interest [2019-11-07 02:25:04,986 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:25:04,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:25:05,006 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:25:05,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs